/* Copyright (C) 2007-2018 Open Information Security Foundation * * You can copy, redistribute or modify this Program under the terms of * the GNU General Public License version 2 as published by the Free * Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * version 2 along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ /** * \file * * \author Anoop Saldanha * \author Victor Julien * * Implements dce_stub_data keyword */ #include "suricata-common.h" #include "detect.h" #include "detect-parse.h" #include "detect-engine.h" #include "detect-engine-build.h" #include "detect-engine-mpm.h" #include "detect-engine-state.h" #include "detect-engine-prefilter.h" #include "detect-engine-content-inspection.h" #include "flow.h" #include "flow-var.h" #include "flow-util.h" #include "app-layer.h" #include "app-layer-parser.h" #include "queue.h" #include "stream-tcp-reassemble.h" #include "detect-dce-stub-data.h" #include "detect-dce-iface.h" #include "util-debug.h" #include "util-unittest.h" #include "util-unittest-helper.h" #include "stream-tcp.h" #include "rust.h" #define BUFFER_NAME "dce_stub_data" #define KEYWORD_NAME "dce_stub_data" static int DetectDceStubDataSetup(DetectEngineCtx *, Signature *, const char *); #ifdef UNITTESTS static void DetectDceStubDataRegisterTests(void); #endif static int g_dce_stub_data_buffer_id = 0; static InspectionBuffer *GetSMBData(DetectEngineThreadCtx *det_ctx, const DetectEngineTransforms *transforms, Flow *_f, const uint8_t flow_flags, void *txv, const int list_id) { InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id); if (!buffer->initialized) { uint32_t data_len = 0; const uint8_t *data = NULL; uint8_t dir = flow_flags & (STREAM_TOSERVER|STREAM_TOCLIENT); if (rs_smb_tx_get_stub_data(txv, dir, &data, &data_len) != 1) return NULL; SCLogDebug("have data!"); InspectionBufferSetup(det_ctx, list_id, buffer, data, data_len); InspectionBufferApplyTransforms(buffer, transforms); } return buffer; } static InspectionBuffer *GetDCEData(DetectEngineThreadCtx *det_ctx, const DetectEngineTransforms *transforms, Flow *_f, const uint8_t flow_flags, void *txv, const int list_id) { InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id); if (!buffer->initialized) { uint32_t data_len = 0; const uint8_t *data = NULL; uint8_t endianness; rs_dcerpc_get_stub_data(txv, &data, &data_len, &endianness, flow_flags); if (data == NULL || data_len == 0) return NULL; if (endianness > 0) { buffer->flags = DETECT_CI_FLAGS_DCE_LE; } else { buffer->flags |= DETECT_CI_FLAGS_DCE_BE; } InspectionBufferSetup(det_ctx, list_id, buffer, data, data_len); InspectionBufferApplyTransforms(buffer, transforms); } return buffer; } /** * \brief Registers the keyword handlers for the "dce_stub_data" keyword. */ void DetectDceStubDataRegister(void) { sigmatch_table[DETECT_DCE_STUB_DATA].name = "dcerpc.stub_data"; sigmatch_table[DETECT_DCE_STUB_DATA].alias = "dce_stub_data"; sigmatch_table[DETECT_DCE_STUB_DATA].Setup = DetectDceStubDataSetup; #ifdef UNITTESTS sigmatch_table[DETECT_DCE_STUB_DATA].RegisterTests = DetectDceStubDataRegisterTests; #endif sigmatch_table[DETECT_DCE_STUB_DATA].flags |= SIGMATCH_NOOPT|SIGMATCH_INFO_STICKY_BUFFER; DetectAppLayerInspectEngineRegister2(BUFFER_NAME, ALPROTO_SMB, SIG_FLAG_TOSERVER, 0, DetectEngineInspectBufferGeneric, GetSMBData); DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOSERVER, 2, PrefilterGenericMpmRegister, GetSMBData, ALPROTO_SMB, 0); DetectAppLayerInspectEngineRegister2(BUFFER_NAME, ALPROTO_SMB, SIG_FLAG_TOCLIENT, 0, DetectEngineInspectBufferGeneric, GetSMBData); DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2, PrefilterGenericMpmRegister, GetSMBData, ALPROTO_SMB, 0); DetectAppLayerInspectEngineRegister2(BUFFER_NAME, ALPROTO_DCERPC, SIG_FLAG_TOSERVER, 0, DetectEngineInspectBufferGeneric, GetDCEData); DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOSERVER, 2, PrefilterGenericMpmRegister, GetDCEData, ALPROTO_DCERPC, 0); DetectAppLayerInspectEngineRegister2(BUFFER_NAME, ALPROTO_DCERPC, SIG_FLAG_TOCLIENT, 0, DetectEngineInspectBufferGeneric, GetDCEData); DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2, PrefilterGenericMpmRegister, GetDCEData, ALPROTO_DCERPC, 0); g_dce_stub_data_buffer_id = DetectBufferTypeGetByName(BUFFER_NAME); } /** * \brief setups the dce_stub_data list * * \param de_ctx Pointer to the detection engine context * \param s Pointer to signature for the current Signature being parsed * from the rules * \param arg Pointer to the string holding the keyword value * * \retval 0 on success, -1 on failure */ static int DetectDceStubDataSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg) { if (DetectSignatureSetAppProto(s, ALPROTO_DCERPC) < 0) return -1; if (DetectBufferSetActiveList(de_ctx, s, g_dce_stub_data_buffer_id) < 0) return -1; return 0; } /************************************Unittests*********************************/ #ifdef UNITTESTS #include "detect-engine-alert.h" /** * \test Test a valid dce_stub_data entry with bind, bind_ack, request frags. */ static int DetectDceStubDataTestParse02(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, 0x6a, 0x28, 0x19, 0x39, 0x0c, 0xb1, 0xd0, 0x11, 0x9b, 0xa8, 0x00, 0xc0, 0x4f, 0xd9, 0x2e, 0xf5, 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_bindack[] = { 0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xb8, 0x10, 0xb8, 0x10, 0x26, 0x3d, 0x00, 0x00, 0x0c, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c, 0x6c, 0x73, 0x61, 0x73, 0x73, 0x00, 0x00, 0x00, 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 }; /* 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, 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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, 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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, 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); 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); goto end; } 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 */ 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); goto end; } 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; 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); goto end; } 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 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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); 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); goto end; } 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; } 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); goto end; } p->flowflags &=~ FLOW_PKT_TOSERVER; p->flowflags |= FLOW_PKT_TOCLIENT; SigMatchSignatures(&th_v, de_ctx, det_ctx, p); /* request1 */ 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); 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 */ 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); goto end; } 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 */ 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); 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; /* response2 */ 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); goto end; } 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 */ 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); 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; /* response3 */ 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); goto end; } 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 */ 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); goto end; } 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 */ 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); goto end; } 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 */ 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); 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; /* response2 */ 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); goto end; } 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 */ 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); 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; /* response3 */ 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); goto end; } 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; } // invalid signature because of invalid protocol static int DetectDceStubDataTestParse06(void) { DetectEngineCtx *de_ctx = DetectEngineCtxInit(); FAIL_IF_NULL(de_ctx); de_ctx->flags = DE_QUIET; Signature *s = DetectEngineAppendSig(de_ctx, "alert dns any any -> any any dce_stub_data;content:\"0\";"); FAIL_IF_NOT_NULL(s); DetectEngineCtxFree(de_ctx); PASS; } static void DetectDceStubDataRegisterTests(void) { UtRegisterTest("DetectDceStubDataTestParse02", DetectDceStubDataTestParse02); UtRegisterTest("DetectDceStubDataTestParse03", DetectDceStubDataTestParse03); UtRegisterTest("DetectDceStubDataTestParse04", DetectDceStubDataTestParse04); UtRegisterTest("DetectDceStubDataTestParse05", DetectDceStubDataTestParse05); UtRegisterTest("DetectDceStubDataTestParse06", DetectDceStubDataTestParse06); } #endif