extern "ntdll" fn NtProtectVirtualMemory(HANDLE, *?PVOID, *SIZE_T, ULONG, *ULONG) callconv(WINAPI) NTSTATUS

Parameters

ProcessHandle: HANDLE,
BaseAddress: *?PVOID,
NumberOfBytesToProtect: *SIZE_T,
NewAccessProtection: ULONG,
OldAccessProtection: *ULONG,