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/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Anoop Saldanha <anoopsaldanha@gmail.com>
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*
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* Implements dce_stub_data keyword
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*/
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#include "suricata-common.h"
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#include "detect.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-mpm.h"
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#include "detect-engine-state.h"
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#include "flow.h"
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#include "flow-var.h"
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#include "flow-util.h"
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#include "app-layer.h"
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#include "app-layer-dcerpc.h"
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#include "queue.h"
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#include "stream-tcp-reassemble.h"
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#include "detect-dce-stub-data.h"
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#include "util-debug.h"
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#include "util-unittest.h"
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#include "util-unittest-helper.h"
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#include "stream-tcp.h"
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int DetectDceStubDataMatch(ThreadVars *, DetectEngineThreadCtx *, Flow *, uint8_t,
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void *, Signature *, SigMatch *);
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static int DetectDceStubDataSetup(DetectEngineCtx *, Signature *, char *);
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/**
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* \brief Registers the keyword handlers for the "dce_stub_data" keyword.
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*/
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void DetectDceStubDataRegister(void)
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{
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sigmatch_table[DETECT_DCE_STUB_DATA].name = "dce_stub_data";
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sigmatch_table[DETECT_DCE_STUB_DATA].Match = NULL;
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sigmatch_table[DETECT_DCE_STUB_DATA].AppLayerMatch = NULL;
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sigmatch_table[DETECT_DCE_STUB_DATA].Setup = DetectDceStubDataSetup;
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sigmatch_table[DETECT_DCE_STUB_DATA].Free = NULL;
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sigmatch_table[DETECT_DCE_STUB_DATA].RegisterTests = DetectDceStubDataRegisterTests;
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sigmatch_table[DETECT_DCE_STUB_DATA].flags |= SIGMATCH_NOOPT;
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sigmatch_table[DETECT_DCE_STUB_DATA].flags |= SIGMATCH_PAYLOAD;
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return;
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}
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/**
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* \brief Creates a SigMatch for the \"dce_stub_data\" keyword being sent as argument,
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* and appends it to the Signature(s).
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*
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* \param de_ctx Pointer to the detection engine context
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* \param s Pointer to signature for the current Signature being parsed
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* from the rules
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* \param arg Pointer to the string holding the keyword value
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*
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* \retval 0 on success, -1 on failure
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*/
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static int DetectDceStubDataSetup(DetectEngineCtx *de_ctx, Signature *s, char *arg)
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{
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if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_DCERPC) {
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SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS,
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"rule contains conflicting keywords.");
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goto error;
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}
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s->list = DETECT_SM_LIST_DMATCH;
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s->alproto = ALPROTO_DCERPC;
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s->flags |= SIG_FLAG_APPLAYER;
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return 0;
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error:
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return -1;
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}
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/************************************Unittests*********************************/
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#ifdef UNITTESTS
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static int DetectDceStubDataTestParse01(void)
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{
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Signature s;
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int result = 0;
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memset(&s, 0, sizeof(Signature));
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result = (DetectDceStubDataSetup(NULL, &s, NULL) == 0);
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if (s.sm_lists[DETECT_SM_LIST_AMATCH] == NULL) {
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result = 1;
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} else {
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result = 0;
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}
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return result;
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}
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/**
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* \test Test a valid dce_stub_data entry with bind, bind_ack, request frags.
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*/
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static int DetectDceStubDataTestParse02(void)
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{
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int result = 0;
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Signature *s = NULL;
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ThreadVars th_v;
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Packet *p = NULL;
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Flow f;
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TcpSession ssn;
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DetectEngineThreadCtx *det_ctx = NULL;
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DetectEngineCtx *de_ctx = NULL;
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DCERPCState *dcerpc_state = NULL;
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int r = 0;
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uint8_t dcerpc_bind[] = {
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0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
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0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0xb8, 0x10, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
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0x6a, 0x28, 0x19, 0x39, 0x0c, 0xb1, 0xd0, 0x11,
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0x9b, 0xa8, 0x00, 0xc0, 0x4f, 0xd9, 0x2e, 0xf5,
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0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
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0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
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0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
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};
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uint8_t dcerpc_bindack[] = {
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0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
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0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0xb8, 0x10, 0xb8, 0x10, 0x26, 0x3d, 0x00, 0x00,
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0x0c, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c,
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0x6c, 0x73, 0x61, 0x73, 0x73, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
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0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
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0x02, 0x00, 0x00, 0x00
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};
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/* todo chop the request frag length and change the
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* length related parameters in the frag */
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uint8_t dcerpc_request[] = {
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0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
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0xec, 0x0c, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0xd4, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
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0xe1, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xe1, 0x03, 0x00, 0x00, 0x83, 0xc7, 0x0b, 0x47,
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0x47, 0x47, 0x47, 0x81, 0x37, 0x22, 0xa5, 0x9b,
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0x4a, 0x75, 0xf4, 0xa3, 0x61, 0xd3, 0xbe, 0xdd,
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0x5a, 0xfb, 0x20, 0x1e, 0xfc, 0x10, 0x8e, 0x0f,
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0xa5, 0x9f, 0x4a, 0x22, 0x20, 0x9b, 0xa8, 0xd5,
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0xc4, 0xff, 0xc1, 0x3f, 0xbd, 0x9b, 0x4a, 0x22,
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0x2e, 0xc0, 0x7a, 0xa9, 0xfe, 0x97, 0xc9, 0xe1,
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0xa9, 0xf3, 0x2f, 0x22, 0xc9, 0x9b, 0x22, 0x50,
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0xa5, 0xf5, 0x4a, 0x4a, 0xce, 0x9b, 0x2f, 0x22,
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0x2e, 0x6f, 0xc1, 0xe1, 0xf3, 0xa8, 0x83, 0xa2,
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0x64, 0x98, 0xc1, 0x62, 0xa1, 0xa0, 0x89, 0x56,
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0xa8, 0x1b, 0x8b, 0x2b, 0x2e, 0xe3, 0x7a, 0xd1,
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0x03, 0xef, 0x58, 0x7c, 0x4e, 0x7d, 0x14, 0x76,
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0xfa, 0xc3, 0x7f, 0x02, 0xa5, 0xbb, 0x4a, 0x89,
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0x47, 0x6c, 0x12, 0xc9, 0x70, 0x18, 0x8e, 0x3a,
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0x2e, 0xcb, 0x52, 0xa9, 0x67, 0x98, 0x0a, 0x1e,
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0x2e, 0xc3, 0x32, 0x21, 0x7f, 0x10, 0x31, 0x3e,
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0xa6, 0x61, 0xc1, 0x61, 0x85, 0x98, 0x88, 0xa9,
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0xee, 0x83, 0x22, 0x51, 0xd6, 0xda, 0x4a, 0x4a,
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0xc1, 0xff, 0x38, 0x47, 0xcd, 0xe9, 0x25, 0x41,
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0xe4, 0xf3, 0x0d, 0x47, 0xd1, 0xcb, 0xc1, 0xd6,
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0x1e, 0x95, 0x4a, 0x22, 0xa5, 0x73, 0x08, 0x22,
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0xa5, 0x9b, 0xc9, 0xe6, 0xb5, 0xcd, 0x22, 0x43,
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0xd7, 0xe2, 0x0b, 0x4a, 0xe9, 0xf2, 0x28, 0x50,
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0xcd, 0xd7, 0x25, 0x43, 0xc1, 0x10, 0xbe, 0x99,
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0xa9, 0x9b, 0x4a, 0x22, 0x4d, 0xb8, 0x4a, 0x22,
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0xa5, 0x18, 0x8e, 0x2e, 0xf3, 0xc9, 0x22, 0x4e,
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0xc9, 0x9b, 0x4a, 0x4a, 0x96, 0xa9, 0x64, 0x46,
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0xcd, 0xec, 0x39, 0x10, 0xfa, 0xcf, 0xb5, 0x76,
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0x81, 0x8f, 0xc9, 0xe6, 0xa9, 0x10, 0x82, 0x7c,
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0xff, 0xc4, 0xa1, 0x0a, 0xf5, 0xcc, 0x1b, 0x74,
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0xf4, 0x10, 0x81, 0xa9, 0x9d, 0x98, 0xb0, 0xa1,
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0x65, 0x9f, 0xb9, 0x84, 0xd1, 0x9f, 0x13, 0x7c,
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0x47, 0x76, 0x12, 0x7c, 0xfc, 0x10, 0xbb, 0x09,
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0x55, 0x5a, 0xac, 0x20, 0xfa, 0x10, 0x7e, 0x15,
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0xa6, 0x69, 0x12, 0xe1, 0xf7, 0xca, 0x22, 0x57,
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0xd5, 0x9b, 0x4a, 0x4a, 0xd1, 0xfa, 0x38, 0x56,
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0xcd, 0xcc, 0x19, 0x63, 0xf6, 0xf3, 0x2f, 0x56,
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0xa5, 0x9b, 0x22, 0x51, 0xca, 0xf8, 0x21, 0x48,
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0xa5, 0xf3, 0x28, 0x4b, 0xcb, 0xff, 0x22, 0x47,
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0xcb, 0x9b, 0x4a, 0x4a, 0xc9, 0xf2, 0x39, 0x56,
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0xcd, 0xeb, 0x3e, 0x22, 0xa5, 0xf3, 0x2b, 0x41,
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0xc6, 0xfe, 0xc1, 0xfe, 0xf6, 0xca, 0xc9, 0xe1,
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0xad, 0xc8, 0x1b, 0xa1, 0x66, 0x93, 0x19, 0x73,
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0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
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0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
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0x72, 0x12, 0x09, 0x26, 0x5a, 0x4c, 0xc3, 0x21,
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0x5a, 0x4c, 0xc3, 0x61, 0x59, 0x64, 0x9d, 0xab,
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0xe6, 0x63, 0xc9, 0xc9, 0xad, 0x10, 0xa9, 0xa3,
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0x49, 0x0b, 0x4b, 0x22, 0xa5, 0xcf, 0x22, 0x23,
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0xa4, 0x9b, 0x4a, 0xdd, 0x31, 0xbf, 0xe2, 0x23,
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0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
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0xcf, 0x9d, 0x20, 0x23, 0xcf, 0x99, 0xb5, 0x76,
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0x81, 0x83, 0x20, 0x22, 0xcf, 0x9b, 0x20, 0x22,
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0xcd, 0x99, 0x4a, 0xe6, 0x96, 0x10, 0x96, 0x71,
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0xf6, 0xcb, 0x20, 0x23, 0xf5, 0xf1, 0x5a, 0x71,
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0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
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0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
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0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
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0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
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0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
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0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
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0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
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0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
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0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
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0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
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0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
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0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
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|
|
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|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x01, 0x02, 0x03, 0x04
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
|
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
|
|
|
uint32_t dcerpc_request_len = sizeof(dcerpc_request);
|
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
|
|
|
|
|
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
|
|
|
memset(&f, 0, sizeof(f));
|
|
|
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
|
|
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
|
|
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
|
|
|
f.protoctx = (void *)&ssn;
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
f.proto = IPPROTO_TCP;
|
|
|
|
|
p->flow = &f;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
|
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
|
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
|
|
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
|
|
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
|
|
|
if (de_ctx == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
|
|
|
|
|
|
s = de_ctx->sig_list = SigInit(de_ctx,
|
|
|
|
|
"alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; "
|
|
|
|
|
"dce_stub_data; content:\"|42 42 42 42|\";"
|
|
|
|
|
"sid:1;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
SigGroupBuild(de_ctx);
|
|
|
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
|
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_START,
|
|
|
|
|
dcerpc_bind, dcerpc_bind_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
dcerpc_state = f.alstate;
|
|
|
|
|
if (dcerpc_state == NULL) {
|
|
|
|
|
SCLogDebug("no dcerpc state: ");
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
/* we shouldn't have any stub data */
|
|
|
|
|
if (PacketAlertCheck(p, 1))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* do detect */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
|
|
|
|
dcerpc_bindack_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
/* we shouldn't have any stub data */
|
|
|
|
|
if (PacketAlertCheck(p, 1))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_EOF,
|
|
|
|
|
dcerpc_request, dcerpc_request_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
/* we should have the stub data since we previously parsed a request frag */
|
|
|
|
|
if (!PacketAlertCheck(p, 1))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
result = 1;
|
|
|
|
|
|
|
|
|
|
end:
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
if (alp_tctx != NULL)
|
|
|
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
|
|
|
SigGroupCleanup(de_ctx);
|
|
|
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
|
|
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
|
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
|
|
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
|
|
|
FLOW_DESTROY(&f);
|
|
|
|
|
|
|
|
|
|
UTHFreePackets(&p, 1);
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* \test Test a valid dce_stub_data with just a request frag.
|
|
|
|
|
*/
|
|
|
|
|
static int DetectDceStubDataTestParse03(void)
|
|
|
|
|
{
|
|
|
|
|
int result = 0;
|
|
|
|
|
Signature *s = NULL;
|
|
|
|
|
ThreadVars th_v;
|
|
|
|
|
Packet *p = NULL;
|
|
|
|
|
Flow f;
|
|
|
|
|
TcpSession ssn;
|
|
|
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
|
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
|
|
|
DCERPCState *dcerpc_state = NULL;
|
|
|
|
|
int r = 0;
|
|
|
|
|
|
|
|
|
|
/* todo chop the request frag length and change the
|
|
|
|
|
* length related parameters in the frag */
|
|
|
|
|
uint8_t dcerpc_request[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0xec, 0x0c, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0xd4, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
|
|
|
|
|
0xe1, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0xe1, 0x03, 0x00, 0x00, 0x83, 0xc7, 0x0b, 0x47,
|
|
|
|
|
0x47, 0x47, 0x47, 0x81, 0x37, 0x22, 0xa5, 0x9b,
|
|
|
|
|
0x4a, 0x75, 0xf4, 0xa3, 0x61, 0xd3, 0xbe, 0xdd,
|
|
|
|
|
0x5a, 0xfb, 0x20, 0x1e, 0xfc, 0x10, 0x8e, 0x0f,
|
|
|
|
|
0xa5, 0x9f, 0x4a, 0x22, 0x20, 0x9b, 0xa8, 0xd5,
|
|
|
|
|
0xc4, 0xff, 0xc1, 0x3f, 0xbd, 0x9b, 0x4a, 0x22,
|
|
|
|
|
0x2e, 0xc0, 0x7a, 0xa9, 0xfe, 0x97, 0xc9, 0xe1,
|
|
|
|
|
0xa9, 0xf3, 0x2f, 0x22, 0xc9, 0x9b, 0x22, 0x50,
|
|
|
|
|
0xa5, 0xf5, 0x4a, 0x4a, 0xce, 0x9b, 0x2f, 0x22,
|
|
|
|
|
0x2e, 0x6f, 0xc1, 0xe1, 0xf3, 0xa8, 0x83, 0xa2,
|
|
|
|
|
0x64, 0x98, 0xc1, 0x62, 0xa1, 0xa0, 0x89, 0x56,
|
|
|
|
|
0xa8, 0x1b, 0x8b, 0x2b, 0x2e, 0xe3, 0x7a, 0xd1,
|
|
|
|
|
0x03, 0xef, 0x58, 0x7c, 0x4e, 0x7d, 0x14, 0x76,
|
|
|
|
|
0xfa, 0xc3, 0x7f, 0x02, 0xa5, 0xbb, 0x4a, 0x89,
|
|
|
|
|
0x47, 0x6c, 0x12, 0xc9, 0x70, 0x18, 0x8e, 0x3a,
|
|
|
|
|
0x2e, 0xcb, 0x52, 0xa9, 0x67, 0x98, 0x0a, 0x1e,
|
|
|
|
|
0x2e, 0xc3, 0x32, 0x21, 0x7f, 0x10, 0x31, 0x3e,
|
|
|
|
|
0xa6, 0x61, 0xc1, 0x61, 0x85, 0x98, 0x88, 0xa9,
|
|
|
|
|
0xee, 0x83, 0x22, 0x51, 0xd6, 0xda, 0x4a, 0x4a,
|
|
|
|
|
0xc1, 0xff, 0x38, 0x47, 0xcd, 0xe9, 0x25, 0x41,
|
|
|
|
|
0xe4, 0xf3, 0x0d, 0x47, 0xd1, 0xcb, 0xc1, 0xd6,
|
|
|
|
|
0x1e, 0x95, 0x4a, 0x22, 0xa5, 0x73, 0x08, 0x22,
|
|
|
|
|
0xa5, 0x9b, 0xc9, 0xe6, 0xb5, 0xcd, 0x22, 0x43,
|
|
|
|
|
0xd7, 0xe2, 0x0b, 0x4a, 0xe9, 0xf2, 0x28, 0x50,
|
|
|
|
|
0xcd, 0xd7, 0x25, 0x43, 0xc1, 0x10, 0xbe, 0x99,
|
|
|
|
|
0xa9, 0x9b, 0x4a, 0x22, 0x4d, 0xb8, 0x4a, 0x22,
|
|
|
|
|
0xa5, 0x18, 0x8e, 0x2e, 0xf3, 0xc9, 0x22, 0x4e,
|
|
|
|
|
0xc9, 0x9b, 0x4a, 0x4a, 0x96, 0xa9, 0x64, 0x46,
|
|
|
|
|
0xcd, 0xec, 0x39, 0x10, 0xfa, 0xcf, 0xb5, 0x76,
|
|
|
|
|
0x81, 0x8f, 0xc9, 0xe6, 0xa9, 0x10, 0x82, 0x7c,
|
|
|
|
|
0xff, 0xc4, 0xa1, 0x0a, 0xf5, 0xcc, 0x1b, 0x74,
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0xf4, 0x10, 0x81, 0xa9, 0x9d, 0x98, 0xb0, 0xa1,
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0x65, 0x9f, 0xb9, 0x84, 0xd1, 0x9f, 0x13, 0x7c,
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0x47, 0x76, 0x12, 0x7c, 0xfc, 0x10, 0xbb, 0x09,
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0x55, 0x5a, 0xac, 0x20, 0xfa, 0x10, 0x7e, 0x15,
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0xa6, 0x69, 0x12, 0xe1, 0xf7, 0xca, 0x22, 0x57,
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0xd5, 0x9b, 0x4a, 0x4a, 0xd1, 0xfa, 0x38, 0x56,
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0xcd, 0xcc, 0x19, 0x63, 0xf6, 0xf3, 0x2f, 0x56,
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0xa5, 0x9b, 0x22, 0x51, 0xca, 0xf8, 0x21, 0x48,
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0xa5, 0xf3, 0x28, 0x4b, 0xcb, 0xff, 0x22, 0x47,
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0xcb, 0x9b, 0x4a, 0x4a, 0xc9, 0xf2, 0x39, 0x56,
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0xcd, 0xeb, 0x3e, 0x22, 0xa5, 0xf3, 0x2b, 0x41,
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0xc6, 0xfe, 0xc1, 0xfe, 0xf6, 0xca, 0xc9, 0xe1,
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0xad, 0xc8, 0x1b, 0xa1, 0x66, 0x93, 0x19, 0x73,
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0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
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0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
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0x72, 0x12, 0x09, 0x26, 0x5a, 0x4c, 0xc3, 0x21,
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0x5a, 0x4c, 0xc3, 0x61, 0x59, 0x64, 0x9d, 0xab,
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0xe6, 0x63, 0xc9, 0xc9, 0xad, 0x10, 0xa9, 0xa3,
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0x49, 0x0b, 0x4b, 0x22, 0xa5, 0xcf, 0x22, 0x23,
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0xa4, 0x9b, 0x4a, 0xdd, 0x31, 0xbf, 0xe2, 0x23,
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0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
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0xcf, 0x9d, 0x20, 0x23, 0xcf, 0x99, 0xb5, 0x76,
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0x81, 0x83, 0x20, 0x22, 0xcf, 0x9b, 0x20, 0x22,
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0xcd, 0x99, 0x4a, 0xe6, 0x96, 0x10, 0x96, 0x71,
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0xf6, 0xcb, 0x20, 0x23, 0xf5, 0xf1, 0x5a, 0x71,
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0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
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0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
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0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
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0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
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0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
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0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
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0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
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0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
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0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
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0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
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0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
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0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
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0xf1, 0xcd, 0xb5, 0xf5, 0x26, 0x5f, 0x5a, 0x78,
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0xf7, 0xf1, 0x0a, 0x4a, 0xa5, 0x8b, 0x4a, 0x22,
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0xf7, 0xf1, 0x4a, 0xdd, 0x75, 0x12, 0x0e, 0x06,
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0x81, 0xc1, 0xd9, 0xca, 0xb5, 0x9b, 0x4a, 0x22,
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0xc4, 0xc0, 0xb5, 0xc1, 0xc5, 0xa8, 0x8a, 0x92,
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0xa1, 0x73, 0x5c, 0x22, 0xa5, 0x9b, 0x2b, 0xe1,
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0xc5, 0xc9, 0x19, 0x11, 0x65, 0x73, 0x40, 0x22,
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0xa5, 0x9b, 0x11, 0x78, 0xa6, 0x43, 0x61, 0xf2,
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0xd0, 0x74, 0x2b, 0xe1, 0x96, 0x52, 0x1b, 0x70,
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0xf6, 0x64, 0x3f, 0x22, 0x5a, 0xcf, 0x4f, 0x26,
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0x20, 0x5b, 0x34, 0x23, 0x66, 0x64, 0x1f, 0xd2,
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0xa5, 0x9b, 0x4a, 0x22, 0xa5, 0x9b, 0x4a, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
|
|
|
0x01, 0x02, 0x03, 0x04
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request_len = sizeof(dcerpc_request);
|
|
|
|
|
|
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
|
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
|
|
|
memset(&f, 0, sizeof(f));
|
|
|
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
|
|
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
|
|
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
|
|
|
f.protoctx = (void *)&ssn;
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
f.proto = IPPROTO_TCP;
|
|
|
|
|
p->flow = &f;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
|
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
|
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
|
|
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
|
|
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
|
|
|
if (de_ctx == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
|
|
|
|
|
|
s = de_ctx->sig_list = SigInit(de_ctx,
|
|
|
|
|
"alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; "
|
|
|
|
|
"dce_stub_data; content:\"|42 42 42 42|\";"
|
|
|
|
|
"sid:1;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
SigGroupBuild(de_ctx);
|
|
|
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
|
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_START,
|
|
|
|
|
dcerpc_request, dcerpc_request_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
dcerpc_state = f.alstate;
|
|
|
|
|
if (dcerpc_state == NULL) {
|
|
|
|
|
SCLogDebug("no dcerpc state: ");
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (!PacketAlertCheck(p, 1))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
result = 1;
|
|
|
|
|
|
|
|
|
|
end:
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
if (alp_tctx != NULL)
|
|
|
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
|
|
|
SigGroupCleanup(de_ctx);
|
|
|
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
|
|
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
|
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
|
|
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
|
|
|
FLOW_DESTROY(&f);
|
|
|
|
|
|
|
|
|
|
UTHFreePackets(&p, 1);
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int DetectDceStubDataTestParse04(void)
|
|
|
|
|
{
|
|
|
|
|
int result = 0;
|
|
|
|
|
Signature *s = NULL;
|
|
|
|
|
ThreadVars th_v;
|
|
|
|
|
Packet *p = NULL;
|
|
|
|
|
Flow f;
|
|
|
|
|
TcpSession ssn;
|
|
|
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
|
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
|
|
|
DCERPCState *dcerpc_state = NULL;
|
|
|
|
|
int r = 0;
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_bind[] = {
|
|
|
|
|
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0xb8, 0x10, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
|
|
|
0x01, 0xd0, 0x8c, 0x33, 0x44, 0x22, 0xf1, 0x31,
|
|
|
|
|
0xaa, 0xaa, 0x90, 0x00, 0x38, 0x00, 0x10, 0x03,
|
|
|
|
|
0x01, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
|
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
|
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_bindack[] = {
|
|
|
|
|
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0xb8, 0x10, 0xb8, 0x10, 0x65, 0x8e, 0x00, 0x00,
|
|
|
|
|
0x0d, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c,
|
|
|
|
|
0x77, 0x69, 0x6e, 0x72, 0x65, 0x67, 0x00, 0x6d,
|
|
|
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
|
|
|
|
|
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
|
|
|
|
|
0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request1[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
|
|
|
|
|
0x2c, 0xfd, 0xb5, 0x00, 0x40, 0xaa, 0x01, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x02,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response1[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x30, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request2[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0xa4, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x5c, 0x00, 0x5c, 0x00,
|
|
|
|
|
0xa8, 0xb9, 0x14, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
|
|
|
0x53, 0x00, 0x4f, 0x00, 0x46, 0x00, 0x54, 0x00,
|
|
|
|
|
0x57, 0x00, 0x41, 0x00, 0x52, 0x00, 0x45, 0x00,
|
|
|
|
|
0x5c, 0x00, 0x4d, 0x00, 0x69, 0x00, 0x63, 0x00,
|
|
|
|
|
0x72, 0x00, 0x6f, 0x00, 0x73, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x66, 0x00, 0x74, 0x00, 0x5c, 0x00, 0x57, 0x00,
|
|
|
|
|
0x69, 0x00, 0x6e, 0x00, 0x64, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x77, 0x00, 0x73, 0x00, 0x5c, 0x00, 0x43, 0x00,
|
|
|
|
|
0x75, 0x00, 0x72, 0x00, 0x72, 0x00, 0x65, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x74, 0x00, 0x56, 0x00, 0x65, 0x00,
|
|
|
|
|
0x72, 0x00, 0x73, 0x00, 0x69, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x5c, 0x00, 0x52, 0x00, 0x75, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response2[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x30, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request3[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x70, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x0c, 0x00, 0x0c, 0x00,
|
|
|
|
|
0x98, 0xda, 0x14, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
|
|
|
0x4f, 0x00, 0x73, 0x00, 0x61, 0x00, 0x33, 0x00,
|
|
|
|
|
0x32, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x4e, 0x00, 0x54, 0x00,
|
|
|
|
|
0x4f, 0x00, 0x53, 0x00, 0x41, 0x00, 0x33, 0x00,
|
|
|
|
|
0x32, 0x00, 0x2e, 0x00, 0x45, 0x00, 0x58, 0x00,
|
|
|
|
|
0x45, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response3[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x1c, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
|
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request1_len = sizeof(dcerpc_request1);
|
|
|
|
|
uint32_t dcerpc_response1_len = sizeof(dcerpc_response1);
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request2_len = sizeof(dcerpc_request2);
|
|
|
|
|
uint32_t dcerpc_response2_len = sizeof(dcerpc_response2);
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request3_len = sizeof(dcerpc_request3);
|
|
|
|
|
uint32_t dcerpc_response3_len = sizeof(dcerpc_response3);
|
|
|
|
|
|
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
|
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
|
|
|
memset(&f, 0, sizeof(f));
|
|
|
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
|
|
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
|
|
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
|
|
|
f.protoctx = (void *)&ssn;
|
|
|
|
|
f.proto = IPPROTO_TCP;
|
|
|
|
|
p->flow = &f;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
|
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
|
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
|
|
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
|
|
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
|
|
|
if (de_ctx == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
|
|
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; dce_stub_data; content:\"|00 02|\"; sid:1;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; dce_stub_data; content:\"|00 75|\"; sid:2;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; dce_stub_data; content:\"|00 18|\"; sid:3;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
SigGroupBuild(de_ctx);
|
|
|
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
|
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_START,
|
|
|
|
|
dcerpc_bind, dcerpc_bind_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
dcerpc_state = f.alstate;
|
|
|
|
|
if (dcerpc_state == NULL) {
|
|
|
|
|
SCLogDebug("no dcerpc state: ");
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
|
|
|
|
dcerpc_bindack_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
/* request1 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request1,
|
|
|
|
|
dcerpc_request1_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (!PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response1 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response1,
|
|
|
|
|
dcerpc_response1_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* request2 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request2,
|
|
|
|
|
dcerpc_request2_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || !PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response2 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response2,
|
|
|
|
|
dcerpc_response2_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* request3 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request3,
|
|
|
|
|
dcerpc_request3_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || !PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response3 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT | STREAM_EOF,
|
|
|
|
|
dcerpc_response3, dcerpc_response3_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
result = 1;
|
|
|
|
|
|
|
|
|
|
end:
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
if (alp_tctx != NULL)
|
|
|
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
|
|
|
SigGroupCleanup(de_ctx);
|
|
|
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
|
|
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
|
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
|
|
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
|
|
|
FLOW_DESTROY(&f);
|
|
|
|
|
|
|
|
|
|
UTHFreePackets(&p, 1);
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int DetectDceStubDataTestParse05(void)
|
|
|
|
|
{
|
|
|
|
|
int result = 0;
|
|
|
|
|
Signature *s = NULL;
|
|
|
|
|
ThreadVars th_v;
|
|
|
|
|
Packet *p = NULL;
|
|
|
|
|
Flow f;
|
|
|
|
|
TcpSession ssn;
|
|
|
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
|
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
|
|
|
DCERPCState *dcerpc_state = NULL;
|
|
|
|
|
int r = 0;
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request1[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
|
|
|
|
|
0x2c, 0xfd, 0xb5, 0x00, 0x40, 0xaa, 0x01, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x02,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response1[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x30, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request2[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0xa4, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x5c, 0x00, 0x5c, 0x00,
|
|
|
|
|
0xa8, 0xb9, 0x14, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
|
|
|
0x53, 0x00, 0x4f, 0x00, 0x46, 0x00, 0x54, 0x00,
|
|
|
|
|
0x57, 0x00, 0x41, 0x00, 0x52, 0x00, 0x45, 0x00,
|
|
|
|
|
0x5c, 0x00, 0x4d, 0x00, 0x69, 0x00, 0x63, 0x00,
|
|
|
|
|
0x72, 0x00, 0x6f, 0x00, 0x73, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x66, 0x00, 0x74, 0x00, 0x5c, 0x00, 0x57, 0x00,
|
|
|
|
|
0x69, 0x00, 0x6e, 0x00, 0x64, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x77, 0x00, 0x73, 0x00, 0x5c, 0x00, 0x43, 0x00,
|
|
|
|
|
0x75, 0x00, 0x72, 0x00, 0x72, 0x00, 0x65, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x74, 0x00, 0x56, 0x00, 0x65, 0x00,
|
|
|
|
|
0x72, 0x00, 0x73, 0x00, 0x69, 0x00, 0x6f, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x5c, 0x00, 0x52, 0x00, 0x75, 0x00,
|
|
|
|
|
0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response2[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x30, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_request3[] = {
|
|
|
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x70, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
|
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
|
|
|
0x29, 0x87, 0xea, 0xe9, 0x0c, 0x00, 0x0c, 0x00,
|
|
|
|
|
0x98, 0xda, 0x14, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
|
|
|
0x4f, 0x00, 0x73, 0x00, 0x61, 0x00, 0x33, 0x00,
|
|
|
|
|
0x32, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
|
|
|
0x18, 0x00, 0x00, 0x00, 0x4e, 0x00, 0x54, 0x00,
|
|
|
|
|
0x4f, 0x00, 0x53, 0x00, 0x41, 0x00, 0x33, 0x00,
|
|
|
|
|
0x32, 0x00, 0x2e, 0x00, 0x45, 0x00, 0x58, 0x00,
|
|
|
|
|
0x45, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint8_t dcerpc_response3[] = {
|
|
|
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
|
|
|
0x1c, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
|
|
|
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
0x00, 0x00, 0x00, 0x00,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request1_len = sizeof(dcerpc_request1);
|
|
|
|
|
uint32_t dcerpc_response1_len = sizeof(dcerpc_response1);
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request2_len = sizeof(dcerpc_request2);
|
|
|
|
|
uint32_t dcerpc_response2_len = sizeof(dcerpc_response2);
|
|
|
|
|
|
|
|
|
|
uint32_t dcerpc_request3_len = sizeof(dcerpc_request3);
|
|
|
|
|
uint32_t dcerpc_response3_len = sizeof(dcerpc_response3);
|
|
|
|
|
|
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
|
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
|
|
|
memset(&f, 0, sizeof(f));
|
|
|
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
|
|
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
|
|
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
|
|
|
f.protoctx = (void *)&ssn;
|
|
|
|
|
f.proto = IPPROTO_TCP;
|
|
|
|
|
p->flow = &f;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
|
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
|
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
|
|
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
|
|
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
|
|
|
if (de_ctx == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
|
|
|
|
|
|
s = de_ctx->sig_list = SigInit(de_ctx,
|
|
|
|
|
"alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; "
|
|
|
|
|
"dce_stub_data; content:\"|00 02|\"; "
|
|
|
|
|
"sid:1;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
s = de_ctx->sig_list->next = SigInit(de_ctx,
|
|
|
|
|
"alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; "
|
|
|
|
|
"dce_stub_data; content:\"|00 75|\"; "
|
|
|
|
|
"sid:2;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
s = de_ctx->sig_list->next->next = SigInit(de_ctx,
|
|
|
|
|
"alert tcp any any -> any any "
|
|
|
|
|
"(msg:\"DCERPC\"; "
|
|
|
|
|
"dce_stub_data; content:\"|00 18|\"; "
|
|
|
|
|
"sid:3;)");
|
|
|
|
|
if (s == NULL)
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
SigGroupBuild(de_ctx);
|
|
|
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
|
|
|
|
|
|
/* request1 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_START,
|
|
|
|
|
dcerpc_request1, dcerpc_request1_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
dcerpc_state = f.alstate;
|
|
|
|
|
if (dcerpc_state == NULL) {
|
|
|
|
|
SCLogDebug("no dcerpc state: ");
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (!PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response1 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT,
|
|
|
|
|
dcerpc_response1, dcerpc_response1_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* request2 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER,
|
|
|
|
|
dcerpc_request2, dcerpc_request2_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || !PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response2 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT,
|
|
|
|
|
dcerpc_response2, dcerpc_response2_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* request3 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER,
|
|
|
|
|
dcerpc_request3, dcerpc_request3_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1) || PacketAlertCheck(p, 2) || !PacketAlertCheck(p, 3))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
/* response3 */
|
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT | STREAM_EOF,
|
|
|
|
|
dcerpc_response3, dcerpc_response3_len);
|
|
|
|
|
if (r != 0) {
|
|
|
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
goto end;
|
|
|
|
|
}
|
|
|
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
|
|
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
|
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
|
|
|
/* do detect */
|
|
|
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
|
|
|
|
|
|
if (PacketAlertCheck(p, 1))
|
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
|
|
result = 1;
|
|
|
|
|
|
|
|
|
|
end:
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
if (alp_tctx != NULL)
|
|
|
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
App layer API rewritten. The main files in question are:
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].
Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
"dnsudp" in the rules. A user who previously wrote a rule like this -
"alert dnstcp....." or
"alert dnsudp....."
would now have to use,
alert dns (ipproto:tcp;) or
alert udp (app-layer-protocol:dns;) or
alert ip (ipproto:udp; app-layer-protocol:dns;)
The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0. This is
needed by unittests, which would try to clean the flow, and that would
call the api, AppLayerParserCleanupParserState(), which would try to
clean the app state, but the app layer now needs an ipproto to figure
out which api to internally call to clean the state, and if the ipproto
is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
12 years ago
|
|
|
|
|
|
|
|
SigGroupCleanup(de_ctx);
|
|
|
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
|
|
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
|
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
|
|
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
|
|
|
FLOW_DESTROY(&f);
|
|
|
|
|
|
|
|
|
|
UTHFreePackets(&p, 1);
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
void DetectDceStubDataRegisterTests(void)
|
|
|
|
|
{
|
|
|
|
|
#ifdef UNITTESTS
|
|
|
|
|
UtRegisterTest("DetectDceStubDataTestParse01",
|
|
|
|
|
DetectDceStubDataTestParse01);
|
|
|
|
|
UtRegisterTest("DetectDceStubDataTestParse02",
|
|
|
|
|
DetectDceStubDataTestParse02);
|
|
|
|
|
UtRegisterTest("DetectDceStubDataTestParse03",
|
|
|
|
|
DetectDceStubDataTestParse03);
|
|
|
|
|
UtRegisterTest("DetectDceStubDataTestParse04",
|
|
|
|
|
DetectDceStubDataTestParse04);
|
|
|
|
|
UtRegisterTest("DetectDceStubDataTestParse05",
|
|
|
|
|
DetectDceStubDataTestParse05);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
}
|
