nefarius/Domito
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Exposed custom allocator callback

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This commit is contained in:
Benjamin Höglinger-Stelzer 2023-07-01 04:36:59 +02:00
parent 3727b600ce
commit a6b7b455ec
2 changed files with 113 additions and 110 deletions
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13
include/Domito.h
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@ -64,16 +64,19 @@ typedef PVOID(NTAPI* t_RtlImageDirectoryEntryToData)(
typedef typedef
_IRQL_requires_same_ _IRQL_requires_same_
_Function_class_(DOMITO_ALLOCATE_ROUTINE) _Function_class_(EVT_DOMITO_ALLOCATE_ROUTINE)
__drv_allocatesMem(Mem) __drv_allocatesMem(Mem)
PVOID PVOID
NTAPI NTAPI
DOMITO_ALLOCATE_ROUTINE( EVT_DOMITO_ALLOCATE_ROUTINE(
_In_ SIZE_T ByteSize _In_ SIZE_T ByteSize
); );
typedef DOMITO_ALLOCATE_ROUTINE* PDOMITO_ALLOCATE_ROUTINE; typedef EVT_DOMITO_ALLOCATE_ROUTINE* PFN_DOMITO_ALLOCATE_ROUTINE;
//
// Finds the base address of a driver module
//
_Success_(return == STATUS_SUCCESS) _Success_(return == STATUS_SUCCESS)
_Must_inspect_result_ _Must_inspect_result_
_IRQL_requires_max_(PASSIVE_LEVEL) _IRQL_requires_max_(PASSIVE_LEVEL)
@ -81,9 +84,13 @@ EXTERN_C
NTSTATUS NTSTATUS
DomitoFindDriverBaseAddress( DomitoFindDriverBaseAddress(
_In_ STRING ModuleName, _In_ STRING ModuleName,
_In_ PFN_DOMITO_ALLOCATE_ROUTINE Allocator,
_Inout_opt_ PVOID * ModuleBase _Inout_opt_ PVOID * ModuleBase
); );
//
// Finds the address of an exported function by name
//
_Success_(return == STATUS_SUCCESS) _Success_(return == STATUS_SUCCESS)
_Must_inspect_result_ _Must_inspect_result_
_IRQL_requires_max_(PASSIVE_LEVEL) _IRQL_requires_max_(PASSIVE_LEVEL)

208
src/Domito.cpp
View File

@ -4,87 +4,83 @@
#include "Domito.h" #include "Domito.h"
//
// Finds the base address of a driver module
//
_Success_(return == STATUS_SUCCESS) _Success_(return == STATUS_SUCCESS)
_Must_inspect_result_ _Must_inspect_result_
_IRQL_requires_max_(PASSIVE_LEVEL) _IRQL_requires_max_(PASSIVE_LEVEL)
NTSTATUS NTSTATUS
DomitoFindDriverBaseAddress( DomitoFindDriverBaseAddress(
_In_ STRING ModuleName, _In_ STRING ModuleName,
_Inout_opt_ PVOID* ModuleBase _In_ PFN_DOMITO_ALLOCATE_ROUTINE Allocator,
_Inout_opt_ PVOID * ModuleBase
) )
{ {
ULONG bufferSize = 0; ULONG bufferSize = 0;
PSYSTEM_MODULE_INFORMATION moduleInfo = NULL; PSYSTEM_MODULE_INFORMATION moduleInfo = NULL;
const ULONG SystemModuleInformation = 11; const ULONG SystemModuleInformation = 11;
// Query the required buffer size for module information // Query the required buffer size for module information
NTSTATUS status = ZwQuerySystemInformation( NTSTATUS status = ZwQuerySystemInformation(
SystemModuleInformation, SystemModuleInformation,
&bufferSize, &bufferSize,
0, 0,
&bufferSize &bufferSize
); );
if (status != STATUS_INFO_LENGTH_MISMATCH) if (status != STATUS_INFO_LENGTH_MISMATCH)
{ {
return status; return status;
} }
#pragma warning(disable:4996) #pragma warning(disable:4996)
// Allocate memory for the module information // Allocate memory for the module information
moduleInfo = (PSYSTEM_MODULE_INFORMATION)ExAllocatePoolWithTag( moduleInfo = (PSYSTEM_MODULE_INFORMATION)Allocator(
NonPagedPool, bufferSize
bufferSize, );
'looP'
);
#pragma warning(default:4996) #pragma warning(default:4996)
if (moduleInfo == NULL) if (moduleInfo == NULL)
{ {
return STATUS_INSUFFICIENT_RESOURCES; return STATUS_INSUFFICIENT_RESOURCES;
} }
// Retrieve the module information // Retrieve the module information
status = ZwQuerySystemInformation( status = ZwQuerySystemInformation(
SystemModuleInformation, SystemModuleInformation,
moduleInfo, moduleInfo,
bufferSize, bufferSize,
NULL NULL
); );
if (!NT_SUCCESS(status)) if (!NT_SUCCESS(status))
{ {
ExFreePool(moduleInfo); ExFreePool(moduleInfo);
return status; return status;
} }
STRING currentImageName; STRING currentImageName;
status = STATUS_NOT_FOUND; status = STATUS_NOT_FOUND;
// Iterate through the loaded modules and find the desired module // Iterate through the loaded modules and find the desired module
for (ULONG i = 0; i < moduleInfo->Count; i++) for (ULONG i = 0; i < moduleInfo->Count; i++)
{ {
RtlInitAnsiString(&currentImageName, moduleInfo->Module[i].ImageName); RtlInitAnsiString(&currentImageName, moduleInfo->Module[i].ImageName);
if (0 == RtlCompareString(&ModuleName, &currentImageName, TRUE)) if (0 == RtlCompareString(&ModuleName, &currentImageName, TRUE))
{ {
// Found the module, store the base address // Found the module, store the base address
if (ModuleBase) if (ModuleBase)
{ {
status = STATUS_SUCCESS; status = STATUS_SUCCESS;
*ModuleBase = moduleInfo->Module[i].Base; *ModuleBase = moduleInfo->Module[i].Base;
} }
break; break;
} }
} }
ExFreePool(moduleInfo); ExFreePool(moduleInfo);
return status; return status;
} }
_Success_(return == STATUS_SUCCESS) _Success_(return == STATUS_SUCCESS)
@ -92,64 +88,64 @@ _Must_inspect_result_
_IRQL_requires_max_(PASSIVE_LEVEL) _IRQL_requires_max_(PASSIVE_LEVEL)
NTSTATUS NTSTATUS
DomitoFindExportedFunctionAddress( DomitoFindExportedFunctionAddress(
_In_ PVOID ModuleBase, _In_ PVOID ModuleBase,
_In_ STRING FunctionName, _In_ STRING FunctionName,
_Inout_opt_ PVOID* FunctionAddress _Inout_opt_ PVOID * FunctionAddress
) )
{ {
NTSTATUS status = STATUS_NOT_FOUND; NTSTATUS status = STATUS_NOT_FOUND;
ULONG exportSize; ULONG exportSize;
DECLARE_CONST_UNICODE_STRING(routineName, L"RtlImageDirectoryEntryToData"); DECLARE_CONST_UNICODE_STRING(routineName, L"RtlImageDirectoryEntryToData");
const t_RtlImageDirectoryEntryToData fp_RtlImageDirectoryEntryToData = const t_RtlImageDirectoryEntryToData fp_RtlImageDirectoryEntryToData =
(t_RtlImageDirectoryEntryToData)MmGetSystemRoutineAddress((PUNICODE_STRING)&routineName); (t_RtlImageDirectoryEntryToData)MmGetSystemRoutineAddress((PUNICODE_STRING)&routineName);
if (fp_RtlImageDirectoryEntryToData == NULL) if (fp_RtlImageDirectoryEntryToData == NULL)
{ {
return STATUS_NOT_IMPLEMENTED; return STATUS_NOT_IMPLEMENTED;
} }
// Retrieve the export directory information // Retrieve the export directory information
const PIMAGE_EXPORT_DIRECTORY exportDirectory = (PIMAGE_EXPORT_DIRECTORY)fp_RtlImageDirectoryEntryToData( const PIMAGE_EXPORT_DIRECTORY exportDirectory = (PIMAGE_EXPORT_DIRECTORY)fp_RtlImageDirectoryEntryToData(
ModuleBase, ModuleBase,
TRUE, TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, IMAGE_DIRECTORY_ENTRY_EXPORT,
&exportSize &exportSize
); );
if (exportDirectory == NULL) if (exportDirectory == NULL)
{ {
return STATUS_INVALID_IMAGE_FORMAT; return STATUS_INVALID_IMAGE_FORMAT;
} }
STRING currentFunctionName; STRING currentFunctionName;
const PULONG functionAddresses = (PULONG)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfFunctions); const PULONG functionAddresses = (PULONG)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfFunctions);
const PULONG functionNames = (PULONG)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfNames); const PULONG functionNames = (PULONG)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfNames);
const PUSHORT functionOrdinals = (PUSHORT)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfNameOrdinals); const PUSHORT functionOrdinals = (PUSHORT)((ULONG_PTR)ModuleBase + exportDirectory->AddressOfNameOrdinals);
for (ULONG i = 0; i < exportDirectory->NumberOfNames; i++) for (ULONG i = 0; i < exportDirectory->NumberOfNames; i++)
{ {
const char* functionName = (const char*)((ULONG_PTR)ModuleBase + functionNames[i]); const char* functionName = (const char*)((ULONG_PTR)ModuleBase + functionNames[i]);
const USHORT functionOrdinal = functionOrdinals[i]; const USHORT functionOrdinal = functionOrdinals[i];
UNREFERENCED_PARAMETER(functionOrdinal); UNREFERENCED_PARAMETER(functionOrdinal);
const ULONG functionRva = functionAddresses[i]; const ULONG functionRva = functionAddresses[i];
const PVOID functionAddress = (PVOID)((ULONG_PTR)ModuleBase + functionRva); const PVOID functionAddress = (PVOID)((ULONG_PTR)ModuleBase + functionRva);
RtlInitAnsiString(&currentFunctionName, functionName); RtlInitAnsiString(&currentFunctionName, functionName);
if (0 == RtlCompareString(&FunctionName, &currentFunctionName, TRUE)) if (0 == RtlCompareString(&FunctionName, &currentFunctionName, TRUE))
{ {
if (FunctionAddress) if (FunctionAddress)
{ {
status = STATUS_SUCCESS; status = STATUS_SUCCESS;
*FunctionAddress = functionAddress; *FunctionAddress = functionAddress;
} }
break; break;
} }
} }
return status; return status;
} }