/
creatwth.cpp
1783 lines (1519 loc) · 63 KB
/
creatwth.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
//////////////////////////////////////////////////////////////////////////////
//
// Create a process with a DLL (creatwth.cpp of detours.lib)
//
// Microsoft Research Detours Package, Version 4.0.1
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// #define DETOUR_DEBUG 1
#define DETOURS_INTERNAL
#include "detours.h"
#include <stddef.h>
#if DETOURS_VERSION != 0x4c0c1 // 0xMAJORcMINORcPATCH
#error detours.h version mismatch
#endif
#define IMPORT_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]
#define BOUND_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT]
#define CLR_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR]
#define IAT_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IAT]
//////////////////////////////////////////////////////////////////////////////
//
const GUID DETOUR_EXE_HELPER_GUID = { /* ea0251b9-5cde-41b5-98d0-2af4a26b0fee */
0xea0251b9, 0x5cde, 0x41b5,
{ 0x98, 0xd0, 0x2a, 0xf4, 0xa2, 0x6b, 0x0f, 0xee }};
//////////////////////////////////////////////////////////////////////////////
//
// Enumerate through modules in the target process.
//
static PVOID LoadNtHeaderFromProcess(_In_ HANDLE hProcess,
_In_ HMODULE hModule,
_Out_ PIMAGE_NT_HEADERS32 pNtHeader)
{
ZeroMemory(pNtHeader, sizeof(*pNtHeader));
PBYTE pbModule = (PBYTE)hModule;
if (pbModule == NULL) {
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
if (VirtualQueryEx(hProcess, hModule, &mbi, sizeof(mbi)) == 0) {
return NULL;
}
IMAGE_DOS_HEADER idh;
if (!ReadProcessMemory(hProcess, pbModule, &idh, sizeof(idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %lu\n",
pbModule, pbModule + sizeof(idh), GetLastError()));
return NULL;
}
if (idh.e_magic != IMAGE_DOS_SIGNATURE ||
(DWORD)idh.e_lfanew > mbi.RegionSize ||
(DWORD)idh.e_lfanew < sizeof(idh)) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
if (!ReadProcessMemory(hProcess, pbModule + idh.e_lfanew,
pNtHeader, sizeof(*pNtHeader), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p:%p) failed: %lu\n",
pbModule + idh.e_lfanew,
pbModule + idh.e_lfanew + sizeof(*pNtHeader),
pbModule,
GetLastError()));
return NULL;
}
if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
return pbModule + idh.e_lfanew;
}
static HMODULE EnumerateModulesInProcess(_In_ HANDLE hProcess,
_In_opt_ HMODULE hModuleLast,
_Out_ PIMAGE_NT_HEADERS32 pNtHeader,
_Out_opt_ PVOID *pRemoteNtHeader)
{
ZeroMemory(pNtHeader, sizeof(*pNtHeader));
if (pRemoteNtHeader) {
*pRemoteNtHeader = NULL;
}
PBYTE pbLast = (PBYTE)hModuleLast + MM_ALLOCATION_GRANULARITY;
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
// Find the next memory region that contains a mapped PE image.
//
for (;; pbLast = (PBYTE)mbi.BaseAddress + mbi.RegionSize) {
if (VirtualQueryEx(hProcess, (PVOID)pbLast, &mbi, sizeof(mbi)) == 0) {
break;
}
// Usermode address space has such an unaligned region size always at the
// end and only at the end.
//
if ((mbi.RegionSize & 0xfff) == 0xfff) {
break;
}
if (((PBYTE)mbi.BaseAddress + mbi.RegionSize) < pbLast) {
break;
}
// Skip uncommitted regions and guard pages.
//
if ((mbi.State != MEM_COMMIT) ||
((mbi.Protect & 0xff) == PAGE_NOACCESS) ||
(mbi.Protect & PAGE_GUARD)) {
continue;
}
PVOID remoteHeader
= LoadNtHeaderFromProcess(hProcess, (HMODULE)pbLast, pNtHeader);
if (remoteHeader) {
if (pRemoteNtHeader) {
*pRemoteNtHeader = remoteHeader;
}
return (HMODULE)pbLast;
}
}
return NULL;
}
//////////////////////////////////////////////////////////////////////////////
//
// Find payloads in target process.
//
static PVOID FindDetourSectionInRemoteModule(_In_ HANDLE hProcess,
_In_ HMODULE hModule,
_In_ const IMAGE_NT_HEADERS32 *pNtHeader,
_In_ PVOID pRemoteNtHeader)
{
if (pNtHeader->FileHeader.SizeOfOptionalHeader == 0) {
SetLastError(ERROR_EXE_MARKED_INVALID);
return NULL;
}
PIMAGE_SECTION_HEADER pRemoteSectionHeaders
= (PIMAGE_SECTION_HEADER)((PBYTE)pRemoteNtHeader
+ sizeof(pNtHeader->Signature)
+ sizeof(pNtHeader->FileHeader)
+ pNtHeader->FileHeader.SizeOfOptionalHeader);
IMAGE_SECTION_HEADER header;
for (DWORD n = 0; n < pNtHeader->FileHeader.NumberOfSections; ++n) {
if (!ReadProcessMemory(hProcess, pRemoteSectionHeaders + n, &header, sizeof(header), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(ish@%p..%p) failed: %lu\n",
pRemoteSectionHeaders + n,
(PBYTE)(pRemoteSectionHeaders + n) + sizeof(header),
GetLastError()));
return NULL;
}
if (strcmp((PCHAR)header.Name, ".detour") == 0) {
if (header.VirtualAddress == 0 ||
header.SizeOfRawData == 0) {
break;
}
SetLastError(NO_ERROR);
return (PBYTE)hModule + header.VirtualAddress;
}
}
SetLastError(ERROR_EXE_MARKED_INVALID);
return NULL;
}
static PVOID FindPayloadInRemoteDetourSection(_In_ HANDLE hProcess,
_In_ REFGUID rguid,
_Out_opt_ DWORD *pcbData,
_In_ PVOID pvRemoteDetoursSection)
{
if (pcbData) {
*pcbData = 0;
}
PBYTE pbData = (PBYTE)pvRemoteDetoursSection;
DETOUR_SECTION_HEADER header;
if (!ReadProcessMemory(hProcess, pbData, &header, sizeof(header), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(dsh@%p..%p) failed: %lu\n",
pbData,
pbData + sizeof(header),
GetLastError()));
return NULL;
}
if (header.cbHeaderSize < sizeof(DETOUR_SECTION_HEADER) ||
header.nSignature != DETOUR_SECTION_HEADER_SIGNATURE) {
SetLastError(ERROR_EXE_MARKED_INVALID);
return NULL;
}
if (header.nDataOffset == 0) {
header.nDataOffset = header.cbHeaderSize;
}
for (PVOID pvSection = pbData + header.nDataOffset; pvSection < pbData + header.cbDataSize;) {
DETOUR_SECTION_RECORD section;
if (!ReadProcessMemory(hProcess, pvSection, §ion, sizeof(section), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(dsr@%p..%p) failed: %lu\n",
pvSection,
(PBYTE)pvSection + sizeof(section),
GetLastError()));
return NULL;
}
if (DetourAreSameGuid(section.guid, rguid)) {
if (pcbData) {
*pcbData = section.cbBytes - sizeof(section);
}
SetLastError(NO_ERROR);
return (DETOUR_SECTION_RECORD *)pvSection + 1;
}
pvSection = (PBYTE)pvSection + section.cbBytes;
}
return NULL;
}
_Success_(return != NULL)
PVOID WINAPI DetourFindRemotePayload(_In_ HANDLE hProcess,
_In_ REFGUID rguid,
_Out_opt_ DWORD *pcbData)
{
if (hProcess == NULL) {
SetLastError(ERROR_INVALID_HANDLE);
return NULL;
}
IMAGE_NT_HEADERS32 header;
PVOID pvRemoteHeader;
for (HMODULE hMod = NULL; (hMod = EnumerateModulesInProcess(hProcess, hMod, &header, &pvRemoteHeader)) != NULL;) {
PVOID pvData = FindDetourSectionInRemoteModule(hProcess, hMod, &header, pvRemoteHeader);
if (pvData != NULL) {
pvData = FindPayloadInRemoteDetourSection(hProcess, rguid, pcbData, pvData);
if (pvData != NULL) {
return pvData;
}
}
}
SetLastError(ERROR_MOD_NOT_FOUND);
return NULL;
}
//////////////////////////////////////////////////////////////////////////////
//
// Find a region of memory in which we can create a replacement import table.
//
static PBYTE FindAndAllocateNearBase(HANDLE hProcess, PBYTE pbModule, PBYTE pbBase, DWORD cbAlloc)
{
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
PBYTE pbLast = pbBase;
for (;; pbLast = (PBYTE)mbi.BaseAddress + mbi.RegionSize) {
ZeroMemory(&mbi, sizeof(mbi));
if (VirtualQueryEx(hProcess, (PVOID)pbLast, &mbi, sizeof(mbi)) == 0) {
if (GetLastError() == ERROR_INVALID_PARAMETER) {
break;
}
DETOUR_TRACE(("VirtualQueryEx(%p) failed: %lu\n",
pbLast, GetLastError()));
break;
}
// Usermode address space has such an unaligned region size always at the
// end and only at the end.
//
if ((mbi.RegionSize & 0xfff) == 0xfff) {
break;
}
// Skip anything other than a pure free region.
//
if (mbi.State != MEM_FREE) {
continue;
}
// Use the max of mbi.BaseAddress and pbBase, in case mbi.BaseAddress < pbBase.
PBYTE pbAddress = (PBYTE)mbi.BaseAddress > pbBase ? (PBYTE)mbi.BaseAddress : pbBase;
// Round pbAddress up to the nearest MM allocation boundary.
const DWORD_PTR mmGranularityMinusOne = (DWORD_PTR)(MM_ALLOCATION_GRANULARITY -1);
pbAddress = (PBYTE)(((DWORD_PTR)pbAddress + mmGranularityMinusOne) & ~mmGranularityMinusOne);
#ifdef _WIN64
// The offset from pbModule to any replacement import must fit into 32 bits.
// For simplicity, we check that the offset to the last byte fits into 32 bits,
// instead of the largest offset we'll actually use. The values are very similar.
const size_t GB4 = ((((size_t)1) << 32) - 1);
if ((size_t)(pbAddress + cbAlloc - 1 - pbModule) > GB4) {
DETOUR_TRACE(("FindAndAllocateNearBase(1) failing due to distance >4GB %p\n", pbAddress));
return NULL;
}
#else
UNREFERENCED_PARAMETER(pbModule);
#endif
DETOUR_TRACE(("Free region %p..%p\n",
mbi.BaseAddress,
(PBYTE)mbi.BaseAddress + mbi.RegionSize));
for (; pbAddress < (PBYTE)mbi.BaseAddress + mbi.RegionSize; pbAddress += MM_ALLOCATION_GRANULARITY) {
PBYTE pbAlloc = (PBYTE)VirtualAllocEx(hProcess, pbAddress, cbAlloc,
MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (pbAlloc == NULL) {
DETOUR_TRACE(("VirtualAllocEx(%p) failed: %lu\n", pbAddress, GetLastError()));
continue;
}
#ifdef _WIN64
// The offset from pbModule to any replacement import must fit into 32 bits.
if ((size_t)(pbAddress + cbAlloc - 1 - pbModule) > GB4) {
DETOUR_TRACE(("FindAndAllocateNearBase(2) failing due to distance >4GB %p\n", pbAddress));
return NULL;
}
#endif
DETOUR_TRACE(("[%p..%p] Allocated for import table.\n",
pbAlloc, pbAlloc + cbAlloc));
return pbAlloc;
}
}
return NULL;
}
static inline DWORD PadToDword(DWORD dw)
{
return (dw + 3) & ~3u;
}
static inline DWORD PadToDwordPtr(DWORD dw)
{
return (dw + 7) & ~7u;
}
static inline HRESULT ReplaceOptionalSizeA(_Inout_z_count_(cchDest) LPSTR pszDest,
_In_ size_t cchDest,
_In_z_ LPCSTR pszSize)
{
if (cchDest == 0 || pszDest == NULL || pszSize == NULL ||
pszSize[0] == '\0' || pszSize[1] == '\0' || pszSize[2] != '\0') {
// can not write into empty buffer or with string other than two chars.
return ERROR_INVALID_PARAMETER;
}
for (; cchDest >= 2; cchDest--, pszDest++) {
if (pszDest[0] == '?' && pszDest[1] == '?') {
pszDest[0] = pszSize[0];
pszDest[1] = pszSize[1];
break;
}
}
return S_OK;
}
static BOOL RecordExeRestore(HANDLE hProcess, HMODULE hModule, DETOUR_EXE_RESTORE& der)
{
// Save the various headers for DetourRestoreAfterWith.
ZeroMemory(&der, sizeof(der));
der.cb = sizeof(der);
der.pidh = (PBYTE)hModule;
der.cbidh = sizeof(der.idh);
if (!ReadProcessMemory(hProcess, der.pidh, &der.idh, sizeof(der.idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %lu\n",
der.pidh, der.pidh + der.cbidh, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("IDH: %p..%p\n", der.pidh, der.pidh + der.cbidh));
// We read the NT header in two passes to get the full size.
// First we read just the Signature and FileHeader.
der.pinh = der.pidh + der.idh.e_lfanew;
der.cbinh = FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader);
if (!ReadProcessMemory(hProcess, der.pinh, &der.inh, der.cbinh, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %lu\n",
der.pinh, der.pinh + der.cbinh, GetLastError()));
return FALSE;
}
// Second we read the OptionalHeader and Section headers.
der.cbinh = (FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
der.inh.FileHeader.SizeOfOptionalHeader +
der.inh.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER));
if (der.cbinh > sizeof(der.raw)) {
return FALSE;
}
if (!ReadProcessMemory(hProcess, der.pinh, &der.inh, der.cbinh, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %lu\n",
der.pinh, der.pinh + der.cbinh, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("INH: %p..%p\n", der.pinh, der.pinh + der.cbinh));
// Third, we read the CLR header
if (der.inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
if (der.inh32.CLR_DIRECTORY.VirtualAddress != 0 &&
der.inh32.CLR_DIRECTORY.Size != 0) {
DETOUR_TRACE(("CLR32.VirtAddr=%08lx, CLR.Size=%lu\n",
der.inh32.CLR_DIRECTORY.VirtualAddress,
der.inh32.CLR_DIRECTORY.Size));
der.pclr = ((PBYTE)hModule) + der.inh32.CLR_DIRECTORY.VirtualAddress;
}
}
else if (der.inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
if (der.inh64.CLR_DIRECTORY.VirtualAddress != 0 &&
der.inh64.CLR_DIRECTORY.Size != 0) {
DETOUR_TRACE(("CLR64.VirtAddr=%08lx, CLR.Size=%lu\n",
der.inh64.CLR_DIRECTORY.VirtualAddress,
der.inh64.CLR_DIRECTORY.Size));
der.pclr = ((PBYTE)hModule) + der.inh64.CLR_DIRECTORY.VirtualAddress;
}
}
if (der.pclr != 0) {
der.cbclr = sizeof(der.clr);
if (!ReadProcessMemory(hProcess, der.pclr, &der.clr, der.cbclr, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(clr@%p..%p) failed: %lu\n",
der.pclr, der.pclr + der.cbclr, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("CLR: %p..%p\n", der.pclr, der.pclr + der.cbclr));
}
return TRUE;
}
//////////////////////////////////////////////////////////////////////////////
//
#if DETOURS_32BIT
#define DWORD_XX DWORD32
#define IMAGE_NT_HEADERS_XX IMAGE_NT_HEADERS32
#define IMAGE_NT_OPTIONAL_HDR_MAGIC_XX IMAGE_NT_OPTIONAL_HDR32_MAGIC
#define IMAGE_ORDINAL_FLAG_XX IMAGE_ORDINAL_FLAG32
#define IMAGE_THUNK_DATAXX IMAGE_THUNK_DATA32
#define UPDATE_IMPORTS_XX UpdateImports32
#define DETOURS_BITS_XX 32
#include "uimports.cpp"
#undef DETOUR_EXE_RESTORE_FIELD_XX
#undef DWORD_XX
#undef IMAGE_NT_HEADERS_XX
#undef IMAGE_NT_OPTIONAL_HDR_MAGIC_XX
#undef IMAGE_ORDINAL_FLAG_XX
#undef UPDATE_IMPORTS_XX
#endif // DETOURS_32BIT
#if DETOURS_64BIT
#define DWORD_XX DWORD64
#define IMAGE_NT_HEADERS_XX IMAGE_NT_HEADERS64
#define IMAGE_NT_OPTIONAL_HDR_MAGIC_XX IMAGE_NT_OPTIONAL_HDR64_MAGIC
#define IMAGE_ORDINAL_FLAG_XX IMAGE_ORDINAL_FLAG64
#define IMAGE_THUNK_DATAXX IMAGE_THUNK_DATA64
#define UPDATE_IMPORTS_XX UpdateImports64
#define DETOURS_BITS_XX 64
#include "uimports.cpp"
#undef DETOUR_EXE_RESTORE_FIELD_XX
#undef DWORD_XX
#undef IMAGE_NT_HEADERS_XX
#undef IMAGE_NT_OPTIONAL_HDR_MAGIC_XX
#undef IMAGE_ORDINAL_FLAG_XX
#undef UPDATE_IMPORTS_XX
#endif // DETOURS_64BIT
//////////////////////////////////////////////////////////////////////////////
//
#if DETOURS_64BIT
C_ASSERT(sizeof(IMAGE_NT_HEADERS64) == sizeof(IMAGE_NT_HEADERS32) + 16);
static BOOL UpdateFrom32To64(HANDLE hProcess, HMODULE hModule, WORD machine,
DETOUR_EXE_RESTORE& der)
{
IMAGE_DOS_HEADER idh;
IMAGE_NT_HEADERS32 inh32;
IMAGE_NT_HEADERS64 inh64;
IMAGE_SECTION_HEADER sects[32];
PBYTE pbModule = (PBYTE)hModule;
DWORD n;
ZeroMemory(&inh32, sizeof(inh32));
ZeroMemory(&inh64, sizeof(inh64));
ZeroMemory(sects, sizeof(sects));
DETOUR_TRACE(("UpdateFrom32To64(%04x)\n", machine));
//////////////////////////////////////////////////////// Read old headers.
//
if (!ReadProcessMemory(hProcess, pbModule, &idh, sizeof(idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %lu\n",
pbModule, pbModule + sizeof(idh), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p)\n",
pbModule, pbModule + sizeof(idh)));
PBYTE pnh = pbModule + idh.e_lfanew;
if (!ReadProcessMemory(hProcess, pnh, &inh32, sizeof(inh32), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %lu\n",
pnh, pnh + sizeof(inh32), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p)\n", pnh, pnh + sizeof(inh32)));
if (inh32.FileHeader.NumberOfSections > (sizeof(sects)/sizeof(sects[0]))) {
return FALSE;
}
PBYTE psects = pnh +
FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
inh32.FileHeader.SizeOfOptionalHeader;
ULONG cb = inh32.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
if (!ReadProcessMemory(hProcess, psects, §s, cb, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(ish@%p..%p) failed: %lu\n",
psects, psects + cb, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(ish@%p..%p)\n", psects, psects + cb));
////////////////////////////////////////////////////////// Convert header.
//
inh64.Signature = inh32.Signature;
inh64.FileHeader = inh32.FileHeader;
inh64.FileHeader.Machine = machine;
inh64.FileHeader.SizeOfOptionalHeader = sizeof(IMAGE_OPTIONAL_HEADER64);
inh64.OptionalHeader.Magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
inh64.OptionalHeader.MajorLinkerVersion = inh32.OptionalHeader.MajorLinkerVersion;
inh64.OptionalHeader.MinorLinkerVersion = inh32.OptionalHeader.MinorLinkerVersion;
inh64.OptionalHeader.SizeOfCode = inh32.OptionalHeader.SizeOfCode;
inh64.OptionalHeader.SizeOfInitializedData = inh32.OptionalHeader.SizeOfInitializedData;
inh64.OptionalHeader.SizeOfUninitializedData = inh32.OptionalHeader.SizeOfUninitializedData;
inh64.OptionalHeader.AddressOfEntryPoint = inh32.OptionalHeader.AddressOfEntryPoint;
inh64.OptionalHeader.BaseOfCode = inh32.OptionalHeader.BaseOfCode;
inh64.OptionalHeader.ImageBase = inh32.OptionalHeader.ImageBase;
inh64.OptionalHeader.SectionAlignment = inh32.OptionalHeader.SectionAlignment;
inh64.OptionalHeader.FileAlignment = inh32.OptionalHeader.FileAlignment;
inh64.OptionalHeader.MajorOperatingSystemVersion
= inh32.OptionalHeader.MajorOperatingSystemVersion;
inh64.OptionalHeader.MinorOperatingSystemVersion
= inh32.OptionalHeader.MinorOperatingSystemVersion;
inh64.OptionalHeader.MajorImageVersion = inh32.OptionalHeader.MajorImageVersion;
inh64.OptionalHeader.MinorImageVersion = inh32.OptionalHeader.MinorImageVersion;
inh64.OptionalHeader.MajorSubsystemVersion = inh32.OptionalHeader.MajorSubsystemVersion;
inh64.OptionalHeader.MinorSubsystemVersion = inh32.OptionalHeader.MinorSubsystemVersion;
inh64.OptionalHeader.Win32VersionValue = inh32.OptionalHeader.Win32VersionValue;
inh64.OptionalHeader.SizeOfImage = inh32.OptionalHeader.SizeOfImage;
inh64.OptionalHeader.SizeOfHeaders = inh32.OptionalHeader.SizeOfHeaders;
inh64.OptionalHeader.CheckSum = inh32.OptionalHeader.CheckSum;
inh64.OptionalHeader.Subsystem = inh32.OptionalHeader.Subsystem;
inh64.OptionalHeader.DllCharacteristics = inh32.OptionalHeader.DllCharacteristics;
inh64.OptionalHeader.SizeOfStackReserve = inh32.OptionalHeader.SizeOfStackReserve;
inh64.OptionalHeader.SizeOfStackCommit = inh32.OptionalHeader.SizeOfStackCommit;
inh64.OptionalHeader.SizeOfHeapReserve = inh32.OptionalHeader.SizeOfHeapReserve;
inh64.OptionalHeader.SizeOfHeapCommit = inh32.OptionalHeader.SizeOfHeapCommit;
inh64.OptionalHeader.LoaderFlags = inh32.OptionalHeader.LoaderFlags;
inh64.OptionalHeader.NumberOfRvaAndSizes = inh32.OptionalHeader.NumberOfRvaAndSizes;
for (n = 0; n < IMAGE_NUMBEROF_DIRECTORY_ENTRIES; n++) {
inh64.OptionalHeader.DataDirectory[n] = inh32.OptionalHeader.DataDirectory[n];
}
/////////////////////////////////////////////////////// Write new headers.
//
DWORD dwProtect = 0;
if (!DetourVirtualProtectSameExecuteEx(hProcess, pbModule, inh64.OptionalHeader.SizeOfHeaders,
PAGE_EXECUTE_READWRITE, &dwProtect)) {
return FALSE;
}
if (!WriteProcessMemory(hProcess, pnh, &inh64, sizeof(inh64), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p) failed: %lu\n",
pnh, pnh + sizeof(inh64), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p)\n", pnh, pnh + sizeof(inh64)));
psects = pnh +
FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
inh64.FileHeader.SizeOfOptionalHeader;
cb = inh64.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
if (!WriteProcessMemory(hProcess, psects, §s, cb, NULL)) {
DETOUR_TRACE(("WriteProcessMemory(ish@%p..%p) failed: %lu\n",
psects, psects + cb, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("WriteProcessMemory(ish@%p..%p)\n", psects, psects + cb));
// Record the updated headers.
if (!RecordExeRestore(hProcess, hModule, der)) {
return FALSE;
}
// Remove the import table.
if (der.pclr != NULL && (der.clr.Flags & COMIMAGE_FLAGS_ILONLY)) {
inh64.IMPORT_DIRECTORY.VirtualAddress = 0;
inh64.IMPORT_DIRECTORY.Size = 0;
if (!WriteProcessMemory(hProcess, pnh, &inh64, sizeof(inh64), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p) failed: %lu\n",
pnh, pnh + sizeof(inh64), GetLastError()));
return FALSE;
}
}
DWORD dwOld = 0;
if (!VirtualProtectEx(hProcess, pbModule, inh64.OptionalHeader.SizeOfHeaders,
dwProtect, &dwOld)) {
return FALSE;
}
return TRUE;
}
#endif // DETOURS_64BIT
typedef BOOL(WINAPI *LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
static BOOL IsWow64ProcessHelper(HANDLE hProcess,
PBOOL Wow64Process)
{
#ifdef _X86_
if (Wow64Process == NULL) {
return FALSE;
}
// IsWow64Process is not available on all supported versions of Windows.
//
HMODULE hKernel32 = LoadLibraryW(L"KERNEL32.DLL");
if (hKernel32 == NULL) {
DETOUR_TRACE(("LoadLibraryW failed: %lu\n", GetLastError()));
return FALSE;
}
LPFN_ISWOW64PROCESS pfnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(
hKernel32, "IsWow64Process");
if (pfnIsWow64Process == NULL) {
DETOUR_TRACE(("GetProcAddress failed: %lu\n", GetLastError()));
return FALSE;
}
return pfnIsWow64Process(hProcess, Wow64Process);
#else
return IsWow64Process(hProcess, Wow64Process);
#endif
}
//////////////////////////////////////////////////////////////////////////////
//
BOOL WINAPI DetourUpdateProcessWithDll(_In_ HANDLE hProcess,
_In_reads_(nDlls) LPCSTR *rlpDlls,
_In_ DWORD nDlls)
{
// Find the next memory region that contains a mapped PE image.
//
BOOL bIs32BitProcess;
BOOL bIs64BitOS = FALSE;
HMODULE hModule = NULL;
HMODULE hLast = NULL;
DETOUR_TRACE(("DetourUpdateProcessWithDll(%p,dlls=%lu)\n", hProcess, nDlls));
for (;;) {
IMAGE_NT_HEADERS32 inh;
if ((hLast = EnumerateModulesInProcess(hProcess, hLast, &inh, NULL)) == NULL) {
break;
}
DETOUR_TRACE(("%p machine=%04x magic=%04x\n",
hLast, inh.FileHeader.Machine, inh.OptionalHeader.Magic));
if ((inh.FileHeader.Characteristics & IMAGE_FILE_DLL) == 0) {
hModule = hLast;
DETOUR_TRACE(("%p Found EXE\n", hLast));
}
}
if (hModule == NULL) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
// Determine if the target process is 32bit or 64bit. This is a two-stop process:
//
// 1. First, determine if we're running on a 64bit operating system.
// - If we're running 64bit code (i.e. _WIN64 is defined), this is trivially true.
// - If we're running 32bit code (i.e. _WIN64 is not defined), test if
// we're running under Wow64. If so, it implies that the operating system
// is 64bit.
//
#ifdef _WIN64
bIs64BitOS = TRUE;
#else
if (!IsWow64ProcessHelper(GetCurrentProcess(), &bIs64BitOS)) {
return FALSE;
}
#endif
// 2. With the operating system bitness known, we can now consider the target process:
// - If we're running on a 64bit OS, the target process is 32bit in case
// it is running under Wow64. Otherwise, it's 64bit, running natively
// (without Wow64).
// - If we're running on a 32bit OS, the target process must be 32bit, too.
//
if (bIs64BitOS) {
if (!IsWow64ProcessHelper(hProcess, &bIs32BitProcess)) {
return FALSE;
}
} else {
bIs32BitProcess = TRUE;
}
DETOUR_TRACE((" 32BitProcess=%d\n", bIs32BitProcess));
return DetourUpdateProcessWithDllEx(hProcess,
hModule,
bIs32BitProcess,
rlpDlls,
nDlls);
}
BOOL WINAPI DetourUpdateProcessWithDllEx(_In_ HANDLE hProcess,
_In_ HMODULE hModule,
_In_ BOOL bIs32BitProcess,
_In_reads_(nDlls) LPCSTR *rlpDlls,
_In_ DWORD nDlls)
{
// Find the next memory region that contains a mapped PE image.
//
BOOL bIs32BitExe = FALSE;
DETOUR_TRACE(("DetourUpdateProcessWithDllEx(%p,%p,dlls=%lu)\n", hProcess, hModule, nDlls));
IMAGE_NT_HEADERS32 inh;
if (hModule == NULL || !LoadNtHeaderFromProcess(hProcess, hModule, &inh)) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
if (inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
&& inh.FileHeader.Machine != 0) {
bIs32BitExe = TRUE;
}
DETOUR_TRACE((" 32BitExe=%d\n", bIs32BitExe));
if (hModule == NULL) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
// Save the various headers for DetourRestoreAfterWith.
//
DETOUR_EXE_RESTORE der;
if (!RecordExeRestore(hProcess, hModule, der)) {
return FALSE;
}
#if defined(DETOURS_64BIT)
// Try to convert a neutral 32-bit managed binary to a 64-bit managed binary.
if (bIs32BitExe && !bIs32BitProcess) {
if (!der.pclr // Native binary
|| (der.clr.Flags & COMIMAGE_FLAGS_ILONLY) == 0 // Or mixed-mode MSIL
|| (der.clr.Flags & COMIMAGE_FLAGS_32BITREQUIRED) != 0) { // Or 32BIT Required MSIL
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if (!UpdateFrom32To64(hProcess, hModule,
#if defined(DETOURS_X64)
IMAGE_FILE_MACHINE_AMD64,
#elif defined(DETOURS_IA64)
IMAGE_FILE_MACHINE_IA64,
#elif defined(DETOURS_ARM64)
IMAGE_FILE_MACHINE_ARM64,
#else
#error Must define one of DETOURS_X64 or DETOURS_IA64 or DETOURS_ARM64 on 64-bit.
#endif
der)) {
return FALSE;
}
bIs32BitExe = FALSE;
}
#endif // DETOURS_64BIT
// Now decide if we can insert the detour.
#if defined(DETOURS_32BIT)
if (bIs32BitProcess) {
// 32-bit native or 32-bit managed process on any platform.
if (!UpdateImports32(hProcess, hModule, rlpDlls, nDlls)) {
return FALSE;
}
}
else {
// 64-bit native or 64-bit managed process.
//
// Can't detour a 64-bit process with 32-bit code.
// Note: This happens for 32-bit PE binaries containing only
// manage code that have been marked as 64-bit ready.
//
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
#elif defined(DETOURS_64BIT)
if (bIs32BitProcess || bIs32BitExe) {
// Can't detour a 32-bit process with 64-bit code.
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
else {
// 64-bit native or 64-bit managed process on any platform.
if (!UpdateImports64(hProcess, hModule, rlpDlls, nDlls)) {
return FALSE;
}
}
#else
#pragma Must define one of DETOURS_32BIT or DETOURS_64BIT.
#endif // DETOURS_64BIT
/////////////////////////////////////////////////// Update the CLR header.
//
if (der.pclr != NULL) {
DETOUR_CLR_HEADER clr;
CopyMemory(&clr, &der.clr, sizeof(clr));
clr.Flags &= ~COMIMAGE_FLAGS_ILONLY; // Clear the IL_ONLY flag.
DWORD dwProtect;
if (!DetourVirtualProtectSameExecuteEx(hProcess, der.pclr, sizeof(clr), PAGE_READWRITE, &dwProtect)) {
DETOUR_TRACE(("VirtualProtectEx(clr) write failed: %lu\n", GetLastError()));
return FALSE;
}
if (!WriteProcessMemory(hProcess, der.pclr, &clr, sizeof(clr), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(clr) failed: %lu\n", GetLastError()));
return FALSE;
}
if (!VirtualProtectEx(hProcess, der.pclr, sizeof(clr), dwProtect, &dwProtect)) {
DETOUR_TRACE(("VirtualProtectEx(clr) restore failed: %lu\n", GetLastError()));
return FALSE;
}
DETOUR_TRACE(("CLR: %p..%p\n", der.pclr, der.pclr + der.cbclr));
#if DETOURS_64BIT
if (der.clr.Flags & COMIMAGE_FLAGS_32BITREQUIRED) { // Is the 32BIT Required Flag set?
// X64 never gets here because the process appears as a WOW64 process.
// However, on IA64, it doesn't appear to be a WOW process.
DETOUR_TRACE(("CLR Requires 32-bit\n"));
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
#endif // DETOURS_64BIT
}
//////////////////////////////// Save the undo data to the target process.
//
if (!DetourCopyPayloadToProcess(hProcess, DETOUR_EXE_RESTORE_GUID, &der, sizeof(der))) {
DETOUR_TRACE(("DetourCopyPayloadToProcess failed: %lu\n", GetLastError()));
return FALSE;
}
return TRUE;
}
//////////////////////////////////////////////////////////////////////////////
//
BOOL WINAPI DetourCreateProcessWithDllA(_In_opt_ LPCSTR lpApplicationName,
_Inout_opt_ LPSTR lpCommandLine,
_In_opt_ LPSECURITY_ATTRIBUTES lpProcessAttributes,
_In_opt_ LPSECURITY_ATTRIBUTES lpThreadAttributes,
_In_ BOOL bInheritHandles,
_In_ DWORD dwCreationFlags,
_In_opt_ LPVOID lpEnvironment,
_In_opt_ LPCSTR lpCurrentDirectory,
_In_ LPSTARTUPINFOA lpStartupInfo,
_Out_ LPPROCESS_INFORMATION lpProcessInformation,
_In_ LPCSTR lpDllName,
_In_opt_ PDETOUR_CREATE_PROCESS_ROUTINEA pfCreateProcessA)
{
DWORD dwMyCreationFlags = (dwCreationFlags | CREATE_SUSPENDED);
PROCESS_INFORMATION pi;
BOOL fResult = FALSE;
if (pfCreateProcessA == NULL) {
pfCreateProcessA = CreateProcessA;
}
fResult = pfCreateProcessA(lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwMyCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
&pi);
if (lpProcessInformation != NULL) {
CopyMemory(lpProcessInformation, &pi, sizeof(pi));
}
if (!fResult) {
return FALSE;
}
LPCSTR rlpDlls[2];
DWORD nDlls = 0;
if (lpDllName != NULL) {
rlpDlls[nDlls++] = lpDllName;
}
if (!DetourUpdateProcessWithDll(pi.hProcess, rlpDlls, nDlls)) {
TerminateProcess(pi.hProcess, ~0u);
return FALSE;
}
if (!(dwCreationFlags & CREATE_SUSPENDED)) {
ResumeThread(pi.hThread);
}
return TRUE;
}
BOOL WINAPI DetourCreateProcessWithDllW(_In_opt_ LPCWSTR lpApplicationName,
_Inout_opt_ LPWSTR lpCommandLine,
_In_opt_ LPSECURITY_ATTRIBUTES lpProcessAttributes,
_In_opt_ LPSECURITY_ATTRIBUTES lpThreadAttributes,
_In_ BOOL bInheritHandles,
_In_ DWORD dwCreationFlags,
_In_opt_ LPVOID lpEnvironment,
_In_opt_ LPCWSTR lpCurrentDirectory,
_In_ LPSTARTUPINFOW lpStartupInfo,
_Out_ LPPROCESS_INFORMATION lpProcessInformation,
_In_ LPCSTR lpDllName,
_In_opt_ PDETOUR_CREATE_PROCESS_ROUTINEW pfCreateProcessW)
{
DWORD dwMyCreationFlags = (dwCreationFlags | CREATE_SUSPENDED);
PROCESS_INFORMATION pi;
if (pfCreateProcessW == NULL) {
pfCreateProcessW = CreateProcessW;
}
BOOL fResult = pfCreateProcessW(lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwMyCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
&pi);
if (lpProcessInformation) {
CopyMemory(lpProcessInformation, &pi, sizeof(pi));
}
if (!fResult) {
return FALSE;
}
LPCSTR rlpDlls[2];
DWORD nDlls = 0;
if (lpDllName != NULL) {
rlpDlls[nDlls++] = lpDllName;
}