Ntquerywnfstatedata Ntdlldll Better
typedef NTSTATUS (NTAPI *pNtQueryWnfStateData)( HANDLE StateName, // WNF state name (not a real handle) VOID *Buffer, // Optional type ID or scope VOID *OutputBuffer, ULONG OutputSize, ULONG *OutputNeeded );
NtQueryWnfStateData is exported by name from ntdll.dll . Its prototype is not officially documented by Microsoft, but through reverse engineering (e.g., from ReactOS or public headers), we know it resembles: ntquerywnfstatedata ntdlldll better
NTSTATUS NtQueryWnfStateData( HANDLE StateHandle, // WNF state handle VOID* ChangeStamp, // Optional change stamp VOID* Buffer, // Output data buffer ULONG BufferSize, // Buffer size ULONG* DataSize, // Actual data size ULONG* ChangeStampResult // Resulting change stamp ); ULONG *OutputNeeded )
, it often bypasses common monitoring tools that only watch standard Win32 calls like CreateFile but through reverse engineering (e.g.
: It provides a seamless way for kernel-mode drivers to communicate with user-mode applications via shared State Names. The "Undocumented" Catch