驱动开发：内核枚举LoadImage映像回调( 二 ) _生活百科

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有了数组地址接下来就是要对数组进行解密，如何解密？

1.首先拿到数组指针pPspLoadImageNotifyRoutineAddress + sizeof(PVOID) * i此处的i也就是下标。
2.得到的新地址在与pNotifyRoutineAddress & 0xfffffffffffffff8进行与运算。
3.最后*(PVOID *)pNotifyRoutineAddress取出里面的参数。

增加解密代码以后，这段程序的完整代码也就可以被写出来了，如下所示。

// 署名权// right to sign one's name on a piece of work// PowerBy: LyShark// Email: me@lyshark.com#include <ntddk.h>#include <windef.h>// 指定内存区域的特征码扫描PVOID SearchMemory(PVOID pStartAddress, PVOID pEndAddress, PUCHAR pMemoryData, ULONG ulMemoryDataSize){	PVOID pAddress = NULL;	PUCHAR i = NULL;	ULONG m = 0;	// 扫描内存	for (i = (PUCHAR)pStartAddress; i < (PUCHAR)pEndAddress; i++)	{// 判断特征码for (m = 0; m < ulMemoryDataSize; m++){if (*(PUCHAR)(i + m) != pMemoryData[m]){break;}}// 判断是否找到符合特征码的地址if (m >= ulMemoryDataSize){// 找到特征码位置, 获取紧接着特征码的下一地址pAddress = (PVOID)(i + ulMemoryDataSize);break;}	}	return pAddress;}// 根据特征码获取 PspLoadImageNotifyRoutine 数组地址PVOID SearchPspLoadImageNotifyRoutine(PUCHAR pSpecialData, ULONG ulSpecialDataSize){	UNICODE_STRING ustrFuncName;	PVOID pAddress = NULL;	LONG lOffset = 0;	PVOID pPsSetLoadImageNotifyRoutine = NULL;	PVOID pPspLoadImageNotifyRoutine = NULL;	// 先获取 PsSetLoadImageNotifyRoutineEx 函数地址	RtlInitUnicodeString(&ustrFuncName, L"PsSetLoadImageNotifyRoutineEx");	pPsSetLoadImageNotifyRoutine = MmGetSystemRoutineAddress(&ustrFuncName);	if (NULL == pPsSetLoadImageNotifyRoutine)	{return pPspLoadImageNotifyRoutine;	}	// 查找 PspLoadImageNotifyRoutine函数地址	pAddress = SearchMemory(pPsSetLoadImageNotifyRoutine, (PVOID)((PUCHAR)pPsSetLoadImageNotifyRoutine + 0xFF), pSpecialData, ulSpecialDataSize);	if (NULL == pAddress)	{return pPspLoadImageNotifyRoutine;	}	// 先获取偏移, 再计算地址	lOffset = *(PLONG)pAddress;	pPspLoadImageNotifyRoutine = (PVOID)((PUCHAR)pAddress + sizeof(LONG) + lOffset);	return pPspLoadImageNotifyRoutine;}VOID UnDriver(PDRIVER_OBJECT Driver){}NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath){	DbgPrint("hello lyshark.com \n");	PVOID pPspLoadImageNotifyRoutineAddress = NULL;	RTL_OSVERSIONINFOW osInfo = { 0 };	UCHAR pSpecialData[50] = { 0 };	ULONG ulSpecialDataSize = 0;	// 获取系统版本信息, 判断系统版本	RtlGetVersion(&osInfo);	if (10 == osInfo.dwMajorVersion)	{// 48 8d 0d 88 e8 db ff// 查找指令 lea rcx,[nt!PspLoadImageNotifyRoutine (fffff804`44313ce0)]/*nt!PsSetLoadImageNotifyRoutineEx+0x41:fffff801`80748a81 488d0dd8d3dbfflearcx,[nt!PspLoadImageNotifyRoutine (fffff801`80505e60)]fffff801`80748a88 4533c0xorr8d,r8dfffff801`80748a8b 488d0cd9learcx,[rcx+rbx*8]fffff801`80748a8f 488bd7movrdx,rdifffff801`80748a92 e80584a3ffcallnt!ExCompareExchangeCallBack (fffff801`80180e9c)fffff801`80748a97 84c0testal,alfffff801`80748a99 0f849f000000jent!PsSetLoadImageNotifyRoutineEx+0xfe (fffff801`80748b3e)Branch*/pSpecialData[0] = 0x48;pSpecialData[1] = 0x8D;pSpecialData[2] = 0x0D;ulSpecialDataSize = 3;	}	// 根据特征码获取地址 获取 PspLoadImageNotifyRoutine 数组地址	pPspLoadImageNotifyRoutineAddress = SearchPspLoadImageNotifyRoutine(pSpecialData, ulSpecialDataSize);	DbgPrint("[LyShark] PspLoadImageNotifyRoutine = 0x%p \n", pPspLoadImageNotifyRoutineAddress);	// 遍历回调	ULONG i = 0;	PVOID pNotifyRoutineAddress = NULL;	// 获取 PspLoadImageNotifyRoutine 数组地址	if (NULL == pPspLoadImageNotifyRoutineAddress)	{return FALSE;	}	// 获取回调地址并解密	for (i = 0; i < 64; i++)	{pNotifyRoutineAddress = *(PVOID *)((PUCHAR)pPspLoadImageNotifyRoutineAddress + sizeof(PVOID) * i);pNotifyRoutineAddress = (PVOID)((ULONG64)pNotifyRoutineAddress & 0xfffffffffffffff8);if (MmIsAddressValid(pNotifyRoutineAddress)){pNotifyRoutineAddress = *(PVOID *)pNotifyRoutineAddress;DbgPrint("[LyShark] 序号: %d | 回调地址: 0x%p \n", i, pNotifyRoutineAddress);}	}	Driver->DriverUnload = UnDriver;	return STATUS_SUCCESS;}

运行这段完整的程序代码，输出如下效果：