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1989 lines
83 KiB
C
1989 lines
83 KiB
C
/* Copyright (C) 2007-2016 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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* \author Anoop Saldanha <victor@inliniac.net>
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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 "detect-engine-prefilter.h"
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#include "detect-engine-content-inspection.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 "detect-dce-iface.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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#define BUFFER_NAME "dce_stub_data"
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#define KEYWORD_NAME "dce_stub_data"
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static int DetectDceStubDataSetup(DetectEngineCtx *, Signature *, const char *);
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static void DetectDceStubDataRegisterTests(void);
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static int g_dce_stub_data_buffer_id = 0;
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/** \brief DCERPC Stub Data Mpm prefilter callback
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*
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* \param det_ctx detection engine thread ctx
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* \param p packet to inspect
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* \param f flow to inspect
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* \param txv tx to inspect
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* \param pectx inspection context
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*/
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static void PrefilterTxDceStubDataRequest(DetectEngineThreadCtx *det_ctx,
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const void *pectx,
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Packet *p, Flow *f, void *txv,
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const uint64_t idx, const uint8_t flags)
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{
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SCEnter();
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const MpmCtx *mpm_ctx = (MpmCtx *)pectx;
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DCERPCState *dcerpc_state = DetectDceGetState(f->alproto, f->alstate);
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if (dcerpc_state == NULL)
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return;
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uint32_t buffer_len = dcerpc_state->dcerpc.dcerpcrequest.stub_data_buffer_len;
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const uint8_t *buffer = dcerpc_state->dcerpc.dcerpcrequest.stub_data_buffer;
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if (buffer_len >= mpm_ctx->minlen) {
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(void)mpm_table[mpm_ctx->mpm_type].Search(mpm_ctx,
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&det_ctx->mtcu, &det_ctx->pmq, buffer, buffer_len);
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}
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}
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static int PrefilterTxDceStubDataRequestRegister(SigGroupHead *sgh, MpmCtx *mpm_ctx)
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{
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SCEnter();
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int r = PrefilterAppendTxEngine(sgh, PrefilterTxDceStubDataRequest,
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ALPROTO_DCERPC, 0,
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mpm_ctx, NULL, KEYWORD_NAME " (request)");
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if (r == 0) {
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r = PrefilterAppendTxEngine(sgh, PrefilterTxDceStubDataRequest,
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ALPROTO_SMB, 0,
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mpm_ctx, NULL, KEYWORD_NAME " (request)");
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}
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return r;
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}
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/** \brief DCERPC Stub Data Mpm prefilter callback
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*
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* \param det_ctx detection engine thread ctx
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* \param p packet to inspect
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* \param f flow to inspect
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* \param txv tx to inspect
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* \param pectx inspection context
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*/
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static void PrefilterTxDceStubDataResponse(DetectEngineThreadCtx *det_ctx,
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const void *pectx,
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Packet *p, Flow *f, void *txv,
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const uint64_t idx, const uint8_t flags)
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{
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SCEnter();
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const MpmCtx *mpm_ctx = (MpmCtx *)pectx;
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DCERPCState *dcerpc_state = DetectDceGetState(f->alproto, f->alstate);
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if (dcerpc_state == NULL)
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return;
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uint32_t buffer_len = dcerpc_state->dcerpc.dcerpcresponse.stub_data_buffer_len;
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const uint8_t *buffer = dcerpc_state->dcerpc.dcerpcresponse.stub_data_buffer;
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if (buffer_len >= mpm_ctx->minlen) {
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(void)mpm_table[mpm_ctx->mpm_type].Search(mpm_ctx,
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&det_ctx->mtcu, &det_ctx->pmq, buffer, buffer_len);
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}
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}
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static int PrefilterTxDceStubDataResponseRegister(SigGroupHead *sgh, MpmCtx *mpm_ctx)
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{
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SCEnter();
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int r = PrefilterAppendTxEngine(sgh, PrefilterTxDceStubDataResponse,
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ALPROTO_DCERPC, 0,
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mpm_ctx, NULL, KEYWORD_NAME " (response)");
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if (r == 0) {
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r = PrefilterAppendTxEngine(sgh, PrefilterTxDceStubDataResponse,
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ALPROTO_SMB, 0,
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mpm_ctx, NULL, KEYWORD_NAME " (response)");
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}
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return r;
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}
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static int InspectEngineDceStubData(ThreadVars *tv,
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DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx,
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const Signature *s, const SigMatchData *smd,
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Flow *f, uint8_t flags, void *alstate, void *tx, uint64_t tx_id)
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{
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uint32_t buffer_len = 0;
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uint8_t *buffer = NULL;
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DCERPCState *dcerpc_state = DetectDceGetState(f->alproto, f->alstate);
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if (dcerpc_state == NULL)
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goto end;
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if (flags & STREAM_TOSERVER) {
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buffer_len = dcerpc_state->dcerpc.dcerpcrequest.stub_data_buffer_len;
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buffer = dcerpc_state->dcerpc.dcerpcrequest.stub_data_buffer;
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} else if (flags & STREAM_TOCLIENT) {
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buffer_len = dcerpc_state->dcerpc.dcerpcresponse.stub_data_buffer_len;
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buffer = dcerpc_state->dcerpc.dcerpcresponse.stub_data_buffer;
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}
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if (buffer == NULL ||buffer_len == 0)
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goto end;
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det_ctx->buffer_offset = 0;
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det_ctx->discontinue_matching = 0;
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det_ctx->inspection_recursion_counter = 0;
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int r = DetectEngineContentInspection(de_ctx, det_ctx, s, smd,
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f,
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buffer, buffer_len,
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0,
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DETECT_ENGINE_CONTENT_INSPECTION_MODE_STATE,
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dcerpc_state);
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if (r == 1)
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return DETECT_ENGINE_INSPECT_SIG_MATCH;
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end:
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return DETECT_ENGINE_INSPECT_SIG_NO_MATCH;
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}
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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].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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DetectAppLayerMpmRegister(BUFFER_NAME, SIG_FLAG_TOSERVER, 2,
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PrefilterTxDceStubDataRequestRegister);
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DetectAppLayerMpmRegister(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2,
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PrefilterTxDceStubDataResponseRegister);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME,
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ALPROTO_DCERPC, SIG_FLAG_TOSERVER, 0,
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InspectEngineDceStubData);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME,
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ALPROTO_DCERPC, SIG_FLAG_TOCLIENT, 0,
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InspectEngineDceStubData);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME,
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ALPROTO_SMB, SIG_FLAG_TOSERVER, 0,
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InspectEngineDceStubData);
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DetectAppLayerInspectEngineRegister(BUFFER_NAME,
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ALPROTO_SMB, SIG_FLAG_TOCLIENT, 0,
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InspectEngineDceStubData);
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g_dce_stub_data_buffer_id = DetectBufferTypeGetByName(BUFFER_NAME);
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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, const char *arg)
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{
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if (DetectSignatureSetAppProto(s, ALPROTO_DCERPC) != 0)
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return -1;
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s->init_data->list = g_dce_stub_data_buffer_id;
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return 0;
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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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DetectEngineCtx *de_ctx = DetectEngineCtxInit();
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FAIL_IF_NULL(de_ctx);
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de_ctx->flags = DE_QUIET;
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Signature *s = DetectEngineAppendSig(de_ctx,
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"alert tcp any any -> any any (dce_stub_data; content:\"1\"; sid:1;)");
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FAIL_IF_NULL(s);
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FAIL_IF_NULL(s->sm_lists[g_dce_stub_data_buffer_id]);
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DetectEngineCtxFree(de_ctx);
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PASS;
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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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0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
|
|
0x44, 0x73, 0x4c, 0x6f, 0x67, 0x50, 0x61, 0x74,
|
|
0x68, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x0b, 0x00, 0x00, 0x00, 0x53, 0x79, 0x73, 0x74,
|
|
0x65, 0x6d, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65,
|
|
0x52, 0x6f, 0x6f, 0x74, 0x50, 0x61, 0x74, 0x68,
|
|
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x0b, 0x00, 0x00, 0x00, 0x50, 0x61, 0x72, 0x65,
|
|
0x6e, 0x74, 0x44, 0x6e, 0x73, 0x44, 0x6f, 0x6d,
|
|
0x61, 0x69, 0x6e, 0x4e, 0x61, 0x6d, 0x65, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x07, 0x00, 0x00, 0x00, 0x50, 0x61, 0x72, 0x65,
|
|
0x6e, 0x74, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
|
|
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
|
|
0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x05, 0x00, 0x00, 0x00, 0x41, 0x63, 0x63, 0x6f,
|
|
0x75, 0x6e, 0x74, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x72, 0x65, 0x66, 0x31, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x72, 0x65, 0x66, 0x32, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
|
|
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;
|
|
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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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:
|
|
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)
|
|
{
|
|
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,
|
|
0xf4, 0x10, 0x81, 0xa9, 0x9d, 0x98, 0xb0, 0xa1,
|
|
0x65, 0x9f, 0xb9, 0x84, 0xd1, 0x9f, 0x13, 0x7c,
|
|
0x47, 0x76, 0x12, 0x7c, 0xfc, 0x10, 0xbb, 0x09,
|
|
0x55, 0x5a, 0xac, 0x20, 0xfa, 0x10, 0x7e, 0x15,
|
|
0xa6, 0x69, 0x12, 0xe1, 0xf7, 0xca, 0x22, 0x57,
|
|
0xd5, 0x9b, 0x4a, 0x4a, 0xd1, 0xfa, 0x38, 0x56,
|
|
0xcd, 0xcc, 0x19, 0x63, 0xf6, 0xf3, 0x2f, 0x56,
|
|
0xa5, 0x9b, 0x22, 0x51, 0xca, 0xf8, 0x21, 0x48,
|
|
0xa5, 0xf3, 0x28, 0x4b, 0xcb, 0xff, 0x22, 0x47,
|
|
0xcb, 0x9b, 0x4a, 0x4a, 0xc9, 0xf2, 0x39, 0x56,
|
|
0xcd, 0xeb, 0x3e, 0x22, 0xa5, 0xf3, 0x2b, 0x41,
|
|
0xc6, 0xfe, 0xc1, 0xfe, 0xf6, 0xca, 0xc9, 0xe1,
|
|
0xad, 0xc8, 0x1b, 0xa1, 0x66, 0x93, 0x19, 0x73,
|
|
0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
|
|
0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
|
|
0x72, 0x12, 0x09, 0x26, 0x5a, 0x4c, 0xc3, 0x21,
|
|
0x5a, 0x4c, 0xc3, 0x61, 0x59, 0x64, 0x9d, 0xab,
|
|
0xe6, 0x63, 0xc9, 0xc9, 0xad, 0x10, 0xa9, 0xa3,
|
|
0x49, 0x0b, 0x4b, 0x22, 0xa5, 0xcf, 0x22, 0x23,
|
|
0xa4, 0x9b, 0x4a, 0xdd, 0x31, 0xbf, 0xe2, 0x23,
|
|
0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
|
|
0xcf, 0x9d, 0x20, 0x23, 0xcf, 0x99, 0xb5, 0x76,
|
|
0x81, 0x83, 0x20, 0x22, 0xcf, 0x9b, 0x20, 0x22,
|
|
0xcd, 0x99, 0x4a, 0xe6, 0x96, 0x10, 0x96, 0x71,
|
|
0xf6, 0xcb, 0x20, 0x23, 0xf5, 0xf1, 0x5a, 0x71,
|
|
0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
|
|
0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
|
|
0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
|
|
0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
|
|
0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
|
|
0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
|
|
0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
|
|
0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
|
|
0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
|
|
0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
|
|
0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
|
|
0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
|
|
0xf1, 0xcd, 0xb5, 0xf5, 0x26, 0x5f, 0x5a, 0x78,
|
|
0xf7, 0xf1, 0x0a, 0x4a, 0xa5, 0x8b, 0x4a, 0x22,
|
|
0xf7, 0xf1, 0x4a, 0xdd, 0x75, 0x12, 0x0e, 0x06,
|
|
0x81, 0xc1, 0xd9, 0xca, 0xb5, 0x9b, 0x4a, 0x22,
|
|
0xc4, 0xc0, 0xb5, 0xc1, 0xc5, 0xa8, 0x8a, 0x92,
|
|
0xa1, 0x73, 0x5c, 0x22, 0xa5, 0x9b, 0x2b, 0xe1,
|
|
0xc5, 0xc9, 0x19, 0x11, 0x65, 0x73, 0x40, 0x22,
|
|
0xa5, 0x9b, 0x11, 0x78, 0xa6, 0x43, 0x61, 0xf2,
|
|
0xd0, 0x74, 0x2b, 0xe1, 0x96, 0x52, 0x1b, 0x70,
|
|
0xf6, 0x64, 0x3f, 0x22, 0x5a, 0xcf, 0x4f, 0x26,
|
|
0x20, 0x5b, 0x34, 0x23, 0x66, 0x64, 0x1f, 0xd2,
|
|
0xa5, 0x9b, 0x4a, 0x22, 0xa5, 0x9b, 0x4a, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
|
|
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,
|
|
0x01, 0x02, 0x03, 0x04
|
|
};
|
|
|
|
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;
|
|
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();
|
|
FAIL_IF(de_ctx == NULL);
|
|
|
|
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;)");
|
|
FAIL_IF(s == NULL);
|
|
|
|
SigGroupBuild(de_ctx);
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER | STREAM_START, dcerpc_request,
|
|
dcerpc_request_len);
|
|
FAIL_IF(r != 0);
|
|
|
|
dcerpc_state = f.alstate;
|
|
FAIL_IF (dcerpc_state == NULL);
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
FAIL_IF(!PacketAlertCheck(p, 1));
|
|
|
|
if (alp_tctx != NULL)
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
StreamTcpFreeConfig(TRUE);
|
|
FLOW_DESTROY(&f);
|
|
|
|
UTHFreePackets(&p, 1);
|
|
PASS;
|
|
}
|
|
|
|
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();
|
|
|
|
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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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:
|
|
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();
|
|
|
|
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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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);
|
|
r = AppLayerParserParse(NULL, 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:
|
|
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;
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
static void DetectDceStubDataRegisterTests(void)
|
|
{
|
|
#ifdef UNITTESTS
|
|
UtRegisterTest("DetectDceStubDataTestParse01",
|
|
DetectDceStubDataTestParse01);
|
|
UtRegisterTest("DetectDceStubDataTestParse02",
|
|
DetectDceStubDataTestParse02);
|
|
UtRegisterTest("DetectDceStubDataTestParse03",
|
|
DetectDceStubDataTestParse03);
|
|
UtRegisterTest("DetectDceStubDataTestParse04",
|
|
DetectDceStubDataTestParse04);
|
|
UtRegisterTest("DetectDceStubDataTestParse05",
|
|
DetectDceStubDataTestParse05);
|
|
#endif
|
|
|
|
return;
|
|
}
|