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[分享]内核下对进程只读内存的安全写入方法SafeCopyMemory
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发表于:
2017-6-10 00:09
7365
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[分享]内核下对进程只读内存的安全写入方法SafeCopyMemory
测试过了,好用.
来看雪备份一下,顺便分享给大家.
原文出自,http://blog.csdn.net/u013761036/article/details/60359402
BOOLEAN SafeCopyMemory(PVOID pDestination, PVOID pSourceAddress, SIZE_T SizeOfCopy)
{
PMDL pMdl = NULL;
PVOID pSafeAddress = NULL;
if (!MmIsAddressValid(pDestination) || !MmIsAddressValid(pSourceAddress))
return FALSE;
pMdl = IoAllocateMdl(pDestination, (ULONG)SizeOfCopy, FALSE, FALSE, NULL);
if (!pMdl)
return FALSE;
__try
{
MmProbeAndLockPages(pMdl, KernelMode, IoReadAccess);
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
IoFreeMdl(pMdl);
return FALSE;
}
pSafeAddress = MmGetSystemAddressForMdlSafe(pMdl, NormalPagePriority);
if (!pSafeAddress)
return FALSE;
__try
{
RtlMoveMemory(pSafeAddress, pSourceAddress, SizeOfCopy);
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
;
}
MmUnlockPages(pMdl);
IoFreeMdl(pMdl);
return TRUE;
}
void Test() {
PVOID HookCode = ExAllocatePool(NonPagedPool, 0x200);
RtlFillMemory(HookCode, 0x200, 0x90);
RtlMoveMemory(HookCode, NtOpenProcess, 0x3);
SafeCopyMemory(NtOpenProcess, HookCode, 0x3);
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