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Reload.c
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/*
*
* Copyright (c) 2015-2017 by blindtiger ( [email protected] )
*
* The contents of this file are subject to the Mozilla Public License Version
* 2.0 (the "License")); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. SEe the License
* for the specific language governing rights and limitations under the
* License.
*
* The Initial Developer of the Original e is blindtiger.
*
*/
#include <OsDefs.h>
#include <StubsApi.h>
#include <cc.h>
#ifdef _WIN64
#include <wow64t.h>
#endif // _WIN64
#include "Except.h"
#include "Reload.h"
#include "Testis.h"
static PLIST_ENTRY LdrList;
NTSTATUS
NTAPI
ProtectPages(
__inout PVOID BaseAddress,
__inout SIZE_T RegionSize,
__in ULONG NewProtect,
__out PULONG OldProtect
)
{
NTSTATUS Status = STATUS_SUCCESS;
Status = StubProtectVirtualMemory(
ZwCurrentProcess(),
&BaseAddress,
&RegionSize,
NewProtect,
OldProtect);
return Status;
}
NTSTATUS
NTAPI
FindEntryForDriver(
__in PSTR DriverName,
__out PKLDR_DATA_TABLE_ENTRY * DataTableEntry
)
{
NTSTATUS Status = STATUS_SUCCESS;
PDRIVER_OBJECT DriverObject = NULL;
UNICODE_STRING DriverPath = { 0 };
PKLDR_DATA_TABLE_ENTRY LdrDataTableEntry = NULL;
PKLDR_DATA_TABLE_ENTRY FoundDataTableEntry = NULL;
ANSI_STRING AnsiImageFileName = { 0 };
UNICODE_STRING ImageFileName = { 0 };
extern POBJECT_TYPE * IoDriverObjectType;
if (NULL != LdrList) {
LdrDataTableEntry = CONTAINING_RECORD(
LdrList,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
RtlInitAnsiString(&AnsiImageFileName, DriverName);
Status = RtlAnsiStringToUnicodeString(
&ImageFileName,
&AnsiImageFileName,
TRUE);
if (NT_SUCCESS(Status)) {
Status = STATUS_NO_MORE_ENTRIES;
while (FoundDataTableEntry != LdrDataTableEntry) {
if (FoundDataTableEntry->DllBase) {
if (FALSE != RtlEqualUnicodeString(
&ImageFileName,
&FoundDataTableEntry->BaseDllName,
TRUE)) {
*DataTableEntry = FoundDataTableEntry;
Status = STATUS_SUCCESS;
goto exit;
}
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
RtlFreeUnicodeString(&ImageFileName);
}
}
RtlInitUnicodeString(
&DriverPath,
L"\\Driver\\disk");
Status = ObReferenceObjectByName(
&DriverPath,
OBJ_CASE_INSENSITIVE,
NULL,
FILE_ALL_ACCESS,
*IoDriverObjectType,
KernelMode,
NULL,
&DriverObject);
if (NT_SUCCESS(Status)) {
LdrDataTableEntry = DriverObject->DriverSection;
if (NULL != LdrDataTableEntry) {
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
RtlInitAnsiString(&AnsiImageFileName, DriverName);
Status = RtlAnsiStringToUnicodeString(
&ImageFileName,
&AnsiImageFileName,
TRUE);
if (NT_SUCCESS(Status)) {
Status = STATUS_NO_MORE_ENTRIES;
while (FoundDataTableEntry != LdrDataTableEntry) {
if (NULL != FoundDataTableEntry->DllBase) {
if (FALSE != RtlEqualUnicodeString(
&ImageFileName,
&FoundDataTableEntry->BaseDllName,
TRUE)) {
*DataTableEntry = FoundDataTableEntry;
Status = STATUS_SUCCESS;
break;
}
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
RtlFreeUnicodeString(&ImageFileName);
}
}
ObDereferenceObject(DriverObject);
}
exit:
return Status;
}
NTSTATUS
NTAPI
FindEntryForAddress(
__in PVOID Address,
__out PLDR_DATA_TABLE_ENTRY * TableEntry
)
{
NTSTATUS Status = STATUS_NO_MORE_ENTRIES;
PPEB Peb = NULL;
PPEB_LDR_DATA Ldr = NULL;
PLDR_DATA_TABLE_ENTRY DataTableEntry = NULL;
PLDR_DATA_TABLE_ENTRY LdrDataTableEntry = NULL;
PLDR_DATA_TABLE_ENTRY FoundDataTableEntry = NULL;
if ((ULONG_PTR)Address > *(PULONG_PTR)MM_HIGHEST_USER_ADDRESS) {
if (NULL != LdrList) {
LdrDataTableEntry = CONTAINING_RECORD(
LdrList,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
while (FoundDataTableEntry != LdrDataTableEntry) {
if ((ULONG_PTR)Address >= (ULONG_PTR)FoundDataTableEntry->DllBase &&
(ULONG_PTR)Address <= (ULONG_PTR)FoundDataTableEntry->DllBase +
FoundDataTableEntry->SizeOfImage) {
*TableEntry = FoundDataTableEntry;
Status = STATUS_SUCCESS;
goto exit;
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
}
#define KERNEL_NAME "ntoskrnl.exe"
Status = FindEntryForDriver(
KERNEL_NAME,
&DataTableEntry);
if (NT_SUCCESS(Status)) {
Status = STATUS_NO_MORE_ENTRIES;
LdrDataTableEntry = CONTAINING_RECORD(
DataTableEntry->InLoadOrderLinks.Blink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
while (FoundDataTableEntry != LdrDataTableEntry) {
if ((ULONG_PTR)Address >= (ULONG_PTR)FoundDataTableEntry->DllBase &&
(ULONG_PTR)Address <= (ULONG_PTR)FoundDataTableEntry->DllBase +
FoundDataTableEntry->SizeOfImage) {
*TableEntry = FoundDataTableEntry;
Status = STATUS_SUCCESS;
goto exit;
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
KLDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
}
}
Peb = PsGetProcessPeb(IoGetCurrentProcess());
if (NULL != Peb) {
Ldr = Peb->Ldr;
if (NULL != Ldr) {
LdrDataTableEntry = CONTAINING_RECORD(
&Ldr->InLoadOrderModuleList,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
if (NULL == Address) {
Address = Peb->ImageBaseAddress;
}
while (FoundDataTableEntry != LdrDataTableEntry) {
if ((ULONG_PTR)Address >= (ULONG_PTR)FoundDataTableEntry->DllBase &&
(ULONG_PTR)Address <= (ULONG_PTR)FoundDataTableEntry->DllBase +
FoundDataTableEntry->SizeOfImage) {
*TableEntry = FoundDataTableEntry;
Status = STATUS_SUCCESS;
goto exit;
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
}
}
exit:
return Status;
}
PVOID
NTAPI
GetImageHandle(
__in PSTR ImageName
)
{
NTSTATUS Status = STATUS_NO_MORE_ENTRIES;
PPEB Peb = NULL;
PPEB_LDR_DATA Ldr = NULL;
PLDR_DATA_TABLE_ENTRY LdrDataTableEntry = NULL;
PLDR_DATA_TABLE_ENTRY FoundDataTableEntry = NULL;
ANSI_STRING AnsiImageFileName = { 0 };
UNICODE_STRING ImageFileName = { 0 };
PVOID ImageBase = 0;
if (NULL != ImageName) {
Status = FindEntryForDriver(
ImageName,
&LdrDataTableEntry);
if (Status >= 0) {
ImageBase = LdrDataTableEntry->DllBase;
goto exit;
}
}
Peb = PsGetProcessPeb(IoGetCurrentProcess());
if (NULL != Peb) {
Ldr = Peb->Ldr;
if (NULL != Ldr) {
LdrDataTableEntry = CONTAINING_RECORD(
&Ldr->InLoadOrderModuleList,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
FoundDataTableEntry = CONTAINING_RECORD(
LdrDataTableEntry->InLoadOrderLinks.Flink,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
if (NULL == ImageName) {
ImageBase = Peb->ImageBaseAddress;
goto exit;
}
else {
RtlInitAnsiString(
&AnsiImageFileName,
ImageName);
Status = RtlAnsiStringToUnicodeString(
&ImageFileName,
&AnsiImageFileName,
TRUE);
if (NT_SUCCESS(Status)) {
while (FoundDataTableEntry != LdrDataTableEntry) {
if (FALSE != RtlEqualUnicodeString(
&ImageFileName,
&FoundDataTableEntry->BaseDllName,
TRUE)) {
ImageBase = FoundDataTableEntry->DllBase;
break;
}
FoundDataTableEntry = CONTAINING_RECORD(
FoundDataTableEntry->InLoadOrderLinks.Flink,
LDR_DATA_TABLE_ENTRY,
InLoadOrderLinks);
}
RtlFreeUnicodeString(&ImageFileName);
}
}
}
}
exit:
return ImageBase;
}
PVOID
NTAPI
FetchAddressOfEntryPoint(
__in PVOID ImageBase
)
{
PIMAGE_NT_HEADERS NtHeaders = NULL;
ULONG Offset = 0;
PVOID EntryPoint = NULL;
__try {
if (NULL != NtHeaders) {
if (IMAGE_NT_OPTIONAL_HDR32_MAGIC == NtHeaders->OptionalHeader.Magic) {
Offset = ((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.AddressOfEntryPoint;
}
if (IMAGE_NT_OPTIONAL_HDR64_MAGIC == NtHeaders->OptionalHeader.Magic) {
Offset = ((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.AddressOfEntryPoint;
}
if (0 != Offset) {
EntryPoint = (PCHAR)ImageBase + Offset;
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER) {
EntryPoint = NULL;
}
return EntryPoint;
}
ULONG
NTAPI
FetchTimeStamp(
__in PVOID ImageBase
)
{
PIMAGE_NT_HEADERS NtHeaders = NULL;
ULONG TimeStamp = 0;
__try {
NtHeaders = RtlImageNtHeader(ImageBase);
if (NULL != NtHeaders) {
TimeStamp = NtHeaders->FileHeader.TimeDateStamp;
}
}
__except (EXCEPTION_EXECUTE_HANDLER) {
TimeStamp = 0;
}
return TimeStamp;
}
USHORT
NTAPI
FetchSubsystem(
__in PVOID ImageBase
)
{
PIMAGE_NT_HEADERS NtHeaders = NULL;
USHORT Subsystem = 0;
__try {
NtHeaders = RtlImageNtHeader(ImageBase);
if (NULL != NtHeaders) {
if (IMAGE_NT_OPTIONAL_HDR32_MAGIC == NtHeaders->OptionalHeader.Magic) {
Subsystem = ((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.Subsystem;
}
if (IMAGE_NT_OPTIONAL_HDR64_MAGIC == NtHeaders->OptionalHeader.Magic) {
Subsystem = ((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.Subsystem;
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER) {
Subsystem = 0;
}
return Subsystem;
}
ULONG
NTAPI
FetchSizeOfImage(
__in PVOID ImageBase
)
{
PIMAGE_NT_HEADERS NtHeaders = NULL;
ULONG SizeOfImage = 0;
__try {
NtHeaders = RtlImageNtHeader(ImageBase);
if (NULL != NtHeaders) {
if (IMAGE_NT_OPTIONAL_HDR32_MAGIC == NtHeaders->OptionalHeader.Magic) {
SizeOfImage = ((PIMAGE_NT_HEADERS32)NtHeaders)->OptionalHeader.SizeOfImage;
}
if (IMAGE_NT_OPTIONAL_HDR64_MAGIC == NtHeaders->OptionalHeader.Magic) {
SizeOfImage = ((PIMAGE_NT_HEADERS64)NtHeaders)->OptionalHeader.SizeOfImage;
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER) {
SizeOfImage = 0;
}
return SizeOfImage;
}
PVOID
NTAPI
GetProcedureAddress(
__in PVOID ImageBase,
__in_opt PSTR ProcedureName,
__in_opt ULONG ProcedureNumber
)
{
PIMAGE_EXPORT_DIRECTORY ExportDirectory = NULL;
ULONG Size = 0;
PULONG NameTable = NULL;
PUSHORT OrdinalTable = NULL;
PULONG AddressTable = NULL;
PSTR NameTableName = NULL;
USHORT HintIndex = 0;
PVOID ProcedureAddress = NULL;
ExportDirectory = RtlImageDirectoryEntryToData(
ImageBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT,
&Size);
if (NULL != ExportDirectory) {
NameTable = (PCHAR)ImageBase + ExportDirectory->AddressOfNames;
OrdinalTable = (PCHAR)ImageBase + ExportDirectory->AddressOfNameOrdinals;
AddressTable = (PCHAR)ImageBase + ExportDirectory->AddressOfFunctions;
if (NULL != NameTable &&
NULL != OrdinalTable &&
NULL != AddressTable) {
if (ProcedureNumber >= ExportDirectory->Base &&
ProcedureNumber < MAXSHORT) {
ProcedureAddress = (PCHAR)ImageBase +
AddressTable[ProcedureNumber - ExportDirectory->Base];
}
else {
for (HintIndex = 0;
HintIndex < ExportDirectory->NumberOfNames;
HintIndex++) {
NameTableName = (PCHAR)ImageBase + NameTable[HintIndex];
if (0 == strcmp(
ProcedureName,
NameTableName)) {
ProcedureAddress = (PCHAR)ImageBase +
AddressTable[OrdinalTable[HintIndex]];
}
}
}
}
}
return ProcedureAddress;
}
PULONG_PTR
NTAPI
FindThunk(
__in PVOID ImageBase,
__in PSTR ImportName,
__in_opt PSTR ThunkName,
__in_opt ULONG ThunkNumber
)
{
PIMAGE_IMPORT_DESCRIPTOR ImportDirectory = NULL;
ULONG Size = 0;
PIMAGE_THUNK_DATA OriginalThunk = NULL;
PIMAGE_THUNK_DATA Thunk = NULL;
PIMAGE_IMPORT_BY_NAME ImportByName = NULL;
USHORT Ordinal = 0;
PSTR ForwardImageName = NULL;
ULONG Index = 0;
PULONG_PTR FoundThunk = NULL;
ImportDirectory = RtlImageDirectoryEntryToData(
ImageBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_IMPORT,
&Size);
if (0 != Size) {
do {
OriginalThunk = (PCHAR)ImageBase + ImportDirectory->OriginalFirstThunk;
Thunk = (PCHAR)ImageBase + ImportDirectory->FirstThunk;
ForwardImageName = (PCHAR)ImageBase + ImportDirectory->Name;
if (0 == _stricmp(
ImportName,
ForwardImageName)) {
do {
if (IMAGE_SNAP_BY_ORDINAL(OriginalThunk->u1.Ordinal)) {
Ordinal = (USHORT)IMAGE_ORDINAL(OriginalThunk->u1.Ordinal);
if (ThunkNumber == Ordinal) {
FoundThunk = &Thunk->u1.Function;
goto exit;
}
}
else {
ImportByName = (PCHAR)ImageBase + OriginalThunk->u1.AddressOfData;
if (0 == _stricmp(
ImportByName->Name,
ThunkName)) {
FoundThunk = &Thunk->u1.Function;
goto exit;
}
}
OriginalThunk++;
Thunk++;
} while (OriginalThunk->u1.Function);
}
ImportDirectory++;
} while (0 != ImportDirectory->Characteristics);
}
exit:
return FoundThunk;
}
VOID
NTAPI
ReplaceThunk(
__in PVOID ImageBase,
__in PSTR ImportName,
__in PREPLACE_THUNK ThunkTable,
__in_bcount(ThunkTable) ULONG ThunkCount
)
{
PIMAGE_IMPORT_DESCRIPTOR ImportDirectory = NULL;
ULONG Size = 0;
PIMAGE_THUNK_DATA OriginalThunk = NULL;
PIMAGE_THUNK_DATA Thunk = NULL;
PIMAGE_IMPORT_BY_NAME ImportByName = NULL;
USHORT Ordinal = 0;
PSTR ForwardImageName = NULL;
ULONG Index = 0;
ImportDirectory = RtlImageDirectoryEntryToData(
ImageBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_IMPORT,
&Size);
if (0 != Size) {
do {
OriginalThunk = (PCHAR)ImageBase + ImportDirectory->OriginalFirstThunk;
Thunk = (PCHAR)ImageBase + ImportDirectory->FirstThunk;
ForwardImageName = (PCHAR)ImageBase + ImportDirectory->Name;
if (0 == _stricmp(
ImportName,
ForwardImageName)) {
do {
if (IMAGE_SNAP_BY_ORDINAL(OriginalThunk->u1.Ordinal)) {
Ordinal = (USHORT)IMAGE_ORDINAL(OriginalThunk->u1.Ordinal);
}
else {
ImportByName = (PCHAR)ImageBase + OriginalThunk->u1.AddressOfData;
for (Index = 0;
Index < ThunkCount;
Index++) {
if (0 == _stricmp(
ImportByName->Name,
ThunkTable[Index].Name)) {
Thunk->u1.Function = (ULONG_PTR)ThunkTable[Index].Function;
}
}
}
OriginalThunk++;
Thunk++;
} while (OriginalThunk->u1.Function);
}
ImportDirectory++;
} while (0 != ImportDirectory->Characteristics);
}
}
VOID
NTAPI
SnapThunk(
__in PVOID ImageBase
)
{
PIMAGE_IMPORT_DESCRIPTOR ImportDirectory = NULL;
ULONG Size = 0;
PIMAGE_THUNK_DATA OriginalThunk = NULL;
PIMAGE_THUNK_DATA Thunk = NULL;
PIMAGE_IMPORT_BY_NAME ImportByName = NULL;
USHORT Ordinal = 0;
PSTR ForwardImageName = NULL;
PSTR ForwardImageBase = NULL;
PVOID FunctionAddress = NULL;
ImportDirectory = RtlImageDirectoryEntryToData(
ImageBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_IMPORT,
&Size);
if (0 != Size) {
do {
OriginalThunk = (PCHAR)ImageBase + ImportDirectory->OriginalFirstThunk;
Thunk = (PCHAR)ImageBase + ImportDirectory->FirstThunk;
ForwardImageName = (PCHAR)ImageBase + ImportDirectory->Name;
ForwardImageBase = GetImageHandle(ForwardImageName);
if (NULL != ForwardImageBase) {
do {
if (IMAGE_SNAP_BY_ORDINAL(OriginalThunk->u1.Ordinal)) {
Ordinal = (USHORT)IMAGE_ORDINAL(OriginalThunk->u1.Ordinal);
FunctionAddress = GetProcedureAddress(
ForwardImageBase,
NULL,
Ordinal);
if (NULL != FunctionAddress) {
Thunk->u1.Function = (ULONG_PTR)FunctionAddress;
}
else {
DbgPrint(
"Soul - Testis - import procedure ordinal@%d not found\n",
Ordinal);
}
}
else {
ImportByName = (PCHAR)ImageBase + OriginalThunk->u1.AddressOfData;
FunctionAddress = GetProcedureAddress(
ForwardImageBase,
ImportByName->Name,
0);
if (NULL != FunctionAddress) {
Thunk->u1.Function = (ULONG_PTR)FunctionAddress;
}
else {
DbgPrint(
"Soul - Testis - import procedure %hs not found\n",
ImportByName->Name);
}
}
OriginalThunk++;
Thunk++;
} while (OriginalThunk->u1.Function);
}
else {
DbgPrint(
"Soul - Testis - import dll %hs not found\n",
ForwardImageName);
}
ImportDirectory++;
} while (0 != ImportDirectory->Characteristics);
}
}
FORCEINLINE
ULONG
NTAPI
GetRelocCount(
__in ULONG SizeOfBlock
)
{
ULONG Count = 0;
Count = (SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) / sizeof(USHORT);
return Count;
}
PIMAGE_BASE_RELOCATION
NTAPI
RelocationBlock(
__in PVOID VA,
__in ULONG Count,
__in PUSHORT NextOffset,
__in LONG_PTR Diff
)
{
PUSHORT FixupVA = NULL;
USHORT Offset = 0;
USHORT Type = 0;
while (Count--) {
Offset = *NextOffset & 0xfff;
FixupVA = (PCHAR)VA + Offset;
Type = (*NextOffset >> 12) & 0xf;
switch (Type) {
case IMAGE_REL_BASED_ABSOLUTE: {
break;
}
case IMAGE_REL_BASED_HIGH: {
FixupVA[1] += (USHORT)((Diff >> 16) & 0xffff);
break;
}
case IMAGE_REL_BASED_LOW: {
FixupVA[0] += (USHORT)(Diff & 0xffff);
break;
}
case IMAGE_REL_BASED_HIGHLOW: {
*(PULONG)FixupVA += (ULONG)Diff;
break;
}
case IMAGE_REL_BASED_HIGHADJ: {
FixupVA[0] += NextOffset[1] & 0xffff;
FixupVA[1] += (USHORT)((Diff >> 16) & 0xffff);
++NextOffset;
--Count;
break;
}
case IMAGE_REL_BASED_MIPS_JMPADDR:
case IMAGE_REL_BASED_SECTION:
case IMAGE_REL_BASED_REL32:
// case IMAGE_REL_BASED_VXD_RELATIVE:
// case IMAGE_REL_BASED_MIPS_JMPADDR16:
case IMAGE_REL_BASED_IA64_IMM64: {
break;
}
case IMAGE_REL_BASED_DIR64: {
*(PULONG_PTR)FixupVA += Diff;
break;
}
default: {
return NULL;
}
}
++NextOffset;
}
return (PIMAGE_BASE_RELOCATION)NextOffset;
}
VOID
NTAPI
RelocateImage(
__in PVOID ImageBase,
__in LONG_PTR Diff
)
{
PIMAGE_BASE_RELOCATION RelocDirectory = NULL;
ULONG Size = 0;
PVOID VA = 0;
RelocDirectory = RtlImageDirectoryEntryToData(
ImageBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_BASERELOC,
&Size);
if (0 != Size) {
if (0 != Diff) {
while (0 != Size) {
VA = (PCHAR)ImageBase + RelocDirectory->VirtualAddress;
Size -= RelocDirectory->SizeOfBlock;
RelocDirectory = RelocationBlock(
VA,
GetRelocCount(RelocDirectory->SizeOfBlock),
(PUSHORT)(RelocDirectory + 1),
Diff);
}
}
}
}
PVOID
NTAPI
AllocatePages(
__in PVOID ViewBase
)
{
NTSTATUS Status = STATUS_SUCCESS;
PVOID ImageBase = NULL;
PHYSICAL_ADDRESS HighestAcceptableAddress = { 0 };
USHORT Subsystem = 0;
ULONG SizeOfImage = 0;
ULONG OldProtect = 0;
Subsystem = FetchSubsystem(ViewBase);
SizeOfImage = FetchSizeOfImage(ViewBase);
if (0 != SizeOfImage) {
if (IMAGE_SUBSYSTEM_NATIVE == Subsystem) {
HighestAcceptableAddress.QuadPart = -1;
ImageBase = MmAllocateContiguousMemory(
SizeOfImage,
HighestAcceptableAddress);
}
else if (IMAGE_SUBSYSTEM_WINDOWS_GUI == Subsystem ||
IMAGE_SUBSYSTEM_WINDOWS_CUI == Subsystem) {
Status = ZwAllocateVirtualMemory(
ZwCurrentProcess(),
&ImageBase,
0,
&SizeOfImage,
MEM_COMMIT,
PAGE_EXECUTE);
if (NT_SUCCESS(Status)) {
Status = ProtectPages(
ImageBase,
SizeOfImage,
PAGE_READWRITE,
&OldProtect);
}
}
else {
DbgPrint(
"Soul - Testis - image type not supported.\n");
}
}
return ImageBase;
}
VOID
NTAPI
UnloadImage(
__in PVOID ImageBase
)
{
NTSTATUS Status = STATUS_SUCCESS;
USHORT Subsystem = 0;
SIZE_T RegionSize = 0;
Subsystem = FetchSubsystem(ImageBase);
if (IMAGE_SUBSYSTEM_NATIVE == Subsystem) {
MmFreeContiguousMemory(ImageBase);
}
else if (IMAGE_SUBSYSTEM_WINDOWS_GUI == Subsystem ||
IMAGE_SUBSYSTEM_WINDOWS_CUI == Subsystem) {
Status = ZwFreeVirtualMemory(
ZwCurrentProcess(),
&ImageBase,
&RegionSize,
MEM_RELEASE);
NT_SUCCESS(Status);
}
}
PVOID
NTAPI
MapImage(
__in PVOID ViewBase
)
{
NTSTATUS Status = STATUS_SUCCESS;
PVOID ImageBase = NULL;
PIMAGE_NT_HEADERS NtHeaders = NULL;
PIMAGE_SECTION_HEADER NtSection = NULL;
LONG_PTR Diff = 0;
SIZE_T Index = 0;
__try {
NtHeaders = RtlImageNtHeader(ViewBase);
if (NULL != NtHeaders) {
ImageBase = AllocatePages(ViewBase);
if (NULL != ImageBase) {
RtlZeroMemory(
ImageBase,
NtHeaders->OptionalHeader.SizeOfImage);
NtSection = IMAGE_FIRST_SECTION(NtHeaders);
RtlCopyMemory(
ImageBase,
ViewBase,
NtSection->VirtualAddress);
for (Index = 0;
Index < NtHeaders->FileHeader.NumberOfSections;
Index++) {
RtlCopyMemory(
(PCHAR)ImageBase + NtSection[Index].VirtualAddress,
(PCHAR)ViewBase + NtSection[Index].PointerToRawData,
NtSection[Index].SizeOfRawData);
}
NtHeaders = RtlImageNtHeader(ImageBase);
Diff = (LONG_PTR)ImageBase - NtHeaders->OptionalHeader.ImageBase;
NtHeaders->OptionalHeader.ImageBase = (ULONG_PTR)ImageBase;
RelocateImage(ImageBase, Diff);