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MmpLdrpTls.cpp
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241 lines (206 loc) · 6.47 KB
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#include "stdafx.h"
#if (!MMPP_USE_TLS)
static bool stdcall;
static PVOID LdrpHandleTlsData;
static PVOID LdrpReleaseTlsEntry;
static NTSTATUS NTAPI RtlFindLdrpHandleTlsDataOld() {
NTSTATUS status = STATUS_SUCCESS;
LPCVOID Feature = nullptr;
BYTE Size = 0;
WORD OffsetOfFunctionBegin = 0;
switch (MmpGlobalDataPtr->NtVersions.MajorVersion) {
case 6: {
switch (MmpGlobalDataPtr->NtVersions.MinorVersion) {
//8.1
case 3: {
#ifdef _WIN64
Size = 10;
OffsetOfFunctionBegin = 0x43;
Feature = "\x44\x8d\x43\x09\x4c\x8d\x4c\x24\x38";
#else
Size = 8;
OffsetOfFunctionBegin = 0x1B;
Feature = "\x50\x6a\x09\x6a\x01\x8b\xc1";
#endif
break;
}
//8
case 2: {
#ifdef _WIN64
Size = 9;
OffsetOfFunctionBegin = 0x49;
Feature = "\x48\x8b\x79\x30\x45\x8d\x66\x01";
#else
Size = 7;
OffsetOfFunctionBegin = 0xC;
Feature = "\x8b\x45\x08\x89\x45\xa0";
#endif
break;
}
//7
case 1: {
#ifdef _WIN64
Size = 12;
OffsetOfFunctionBegin = 0x27;
Feature = "\x41\xb8\x09\x00\x00\x00\x48\x8d\x44\x24\x38";
#else
Size = 9;
OffsetOfFunctionBegin = 0x14;
Feature = "\x74\x20\x8d\x45\xd4\x50\x6a\x09";
#endif
break;
}
default:return STATUS_NOT_SUPPORTED;
}
break;
}
default: {
return STATUS_NOT_SUPPORTED;
}
}
SEARCH_CONTEXT SearchContext{ SearchContext.SearchPattern = LPBYTE(Feature),SearchContext.PatternSize = Size - 1 };
if (!NT_SUCCESS(RtlFindMemoryBlockFromModuleSection(HMODULE(MmpGlobalDataPtr->MmpBaseAddressIndex->NtdllLdrEntry->DllBase), ".text", &SearchContext)))
return STATUS_NOT_SUPPORTED;
LdrpHandleTlsData = SearchContext.Result - OffsetOfFunctionBegin;
return status;
}
static NTSTATUS NTAPI RtlFindLdrpHandleTlsData10() {
LPVOID DllBase = MmpGlobalDataPtr->MmpBaseAddressIndex->NtdllLdrEntry->DllBase;
#ifdef _WIN64
// search for LdrpHandleTls string literal
SEARCH_CONTEXT SearchContext{ SearchContext.SearchPattern = LPBYTE("LdrpHandleTlsData\x00"), SearchContext.PatternSize = 18 };
if (!NT_SUCCESS(RtlFindMemoryBlockFromModuleSection(HMODULE(DllBase), ".rdata", &SearchContext)))
return STATUS_NOT_SUPPORTED;
LPBYTE StringOffset = SearchContext.Result;
SearchContext.Result = nullptr;
SearchContext.PatternSize = 3;
SearchContext.SearchPattern = LPBYTE("\x48\x8D\x15");
LPBYTE ExceptionBlock = nullptr;
// Search for lea rdx,[rip+0x????]
// ???? is the relative offset from RIP to LdrpHandleTls string literal
while (NT_SUCCESS(RtlFindMemoryBlockFromModuleSection(HMODULE(DllBase), ".text", &SearchContext))) {
DWORD InsOff = *(DWORD*)(SearchContext.Result + 3);
if (StringOffset == SearchContext.Result + InsOff + 7) {
ExceptionBlock = SearchContext.Result;
break;
}
}
if (!ExceptionBlock) return STATUS_NOT_SUPPORTED;
// Search back for exception block function header
while (*ExceptionBlock != 0xcc) {
// Normally ~13 bytes, but just in case...
if (SearchContext.Result - ExceptionBlock > 0x50) return STATUS_NOT_SUPPORTED;
ExceptionBlock--;
}
ExceptionBlock++;
// search for C_SCOPE_TABLE
union Converter {
BYTE Bytes[4];
DWORD Dword;
};
Converter ExceptionBlockAddress{}; // { .Dword = DWORD(ExceptionBlock - LPBYTE(DllBase)) };
ExceptionBlockAddress.Dword = DWORD(ExceptionBlock - LPBYTE(DllBase));
SearchContext.Result = nullptr;
SearchContext.PatternSize = 4;
SearchContext.SearchPattern = ExceptionBlockAddress.Bytes;
if (!NT_SUCCESS(RtlFindMemoryBlockFromModuleSection(HMODULE(DllBase), ".rdata", &SearchContext)))
return STATUS_NOT_SUPPORTED;
// C_SCOPE_TABLE$$Begin
LPDWORD LdrpHandleTlsBlock = LPDWORD(*(LPDWORD)(SearchContext.Result - 8) + LPBYTE(DllBase));
// Pad to 0x04
LdrpHandleTlsBlock = LPDWORD(LONGLONG(LdrpHandleTlsBlock) / 0x04 * 0x04);
LPDWORD LdrpHandleTlsBlockBackup = LdrpHandleTlsBlock;
// Search back for LdrpHandleTls
// Search up for 4 consecutive 0xCC
while (*LdrpHandleTlsBlock != 0xcccccccc) {
// Normally ~0x140 bytes
if (LdrpHandleTlsBlockBackup - LdrpHandleTlsBlock > 0x400) return STATUS_NOT_SUPPORTED;
LdrpHandleTlsBlock--;
}
LdrpHandleTlsBlock++;
LdrpHandleTlsData = LdrpHandleTlsBlock;
return STATUS_SUCCESS;
#else
return STATUS_NOT_SUPPORTED;
#endif
}
static NTSTATUS NTAPI RtlFindLdrpHandleTlsData() {
if (MmpGlobalDataPtr->NtVersions.MajorVersion >= 10) {
return RtlFindLdrpHandleTlsData10();
}
else {
return RtlFindLdrpHandleTlsDataOld();
}
}
static NTSTATUS NTAPI RtlFindLdrpReleaseTlsEntry() {
NTSTATUS status = STATUS_SUCCESS;
LPCVOID Feature = nullptr;
BYTE Size = 0;
WORD OffsetOfFunctionBegin = 0;
switch (MmpGlobalDataPtr->NtVersions.MajorVersion) {
case 10: {
if (MmpGlobalDataPtr->NtVersions.MinorVersion) return STATUS_NOT_SUPPORTED;
#ifdef _WIN64
Feature = "\x48\x89\x5c\x24\x08\x57\x48\x83\xec\x20\x48\x8b\xfa\x48\x8b\xd9\x48\x85\xd2\x75\x0c";
Size = 21;
#else
return STATUS_NOT_SUPPORTED;
#endif
break;
}
default:
return STATUS_NOT_SUPPORTED;
}
SEARCH_CONTEXT SearchContext{ SearchContext.SearchPattern = LPBYTE(Feature),SearchContext.PatternSize = Size - 1 };
if (!NT_SUCCESS(RtlFindMemoryBlockFromModuleSection(HMODULE(MmpGlobalDataPtr->MmpBaseAddressIndex->NtdllLdrEntry->DllBase), ".text", &SearchContext)))
return STATUS_NOT_SUPPORTED;
LdrpReleaseTlsEntry = SearchContext.Result - OffsetOfFunctionBegin;
return status;
}
BOOL NTAPI MmpTlsInitialize() {
if (!NT_SUCCESS(RtlFindLdrpHandleTlsData()) ||
!NT_SUCCESS(RtlFindLdrpReleaseTlsEntry())) {
LdrpHandleTlsData = nullptr;
LdrpReleaseTlsEntry = nullptr;
MmpGlobalDataPtr->MmpFeatures &= ~MEMORY_FEATURE_LDRP_HANDLE_TLS_DATA;
return FALSE;
}
stdcall = !RtlIsWindowsVersionOrGreater(6, 3, 0);
return TRUE;
}
VOID NTAPI MmpTlsCleanup() {
;
}
NTSTATUS NTAPI MmpReleaseTlsEntry(_In_ PLDR_DATA_TABLE_ENTRY lpModuleEntry) {
typedef NTSTATUS(__stdcall* STDCALL)(PLDR_DATA_TABLE_ENTRY, PVOID*);
typedef NTSTATUS(__thiscall* THISCALL)(PLDR_DATA_TABLE_ENTRY, PVOID*);
union {
STDCALL stdcall;
THISCALL thiscall;
PVOID ptr;
}fp;
fp.ptr = LdrpReleaseTlsEntry;
if (fp.ptr) {
return stdcall ? fp.stdcall(lpModuleEntry, nullptr) : fp.thiscall(lpModuleEntry, nullptr);
}
else {
return STATUS_NOT_SUPPORTED;
}
}
NTSTATUS NTAPI MmpHandleTlsData(_In_ PLDR_DATA_TABLE_ENTRY lpModuleEntry) {
typedef NTSTATUS(__stdcall* STDCALL)(PLDR_DATA_TABLE_ENTRY);
typedef NTSTATUS(__thiscall* THISCALL)(PLDR_DATA_TABLE_ENTRY);
union {
STDCALL stdcall;
THISCALL thiscall;
PVOID ptr;
}fp;
fp.ptr = LdrpHandleTlsData;
if (fp.ptr) {
return stdcall ? fp.stdcall(lpModuleEntry) : fp.thiscall(lpModuleEntry);
}
else {
return STATUS_NOT_SUPPORTED;
}
}
#endif