Is there a way to use the RtlSetProcessIsCritical function from the Windows API in Python?-CodePudding

I want to use the RtlSetProcessIsCritical function that sets a current process as critical but I really couldn't find a way to use it with Python. Here is the example of it in C :

#include <windows.h>

typedef VOID(_stdcall* RtlSetProcessIsCritical) (
    IN BOOLEAN        NewValue,
    OUT PBOOLEAN OldValue,
    IN BOOLEAN     IsWinlogon);

BOOL ProcessIsCritical()
{
    HANDLE hDLL;
    RtlSetProcessIsCritical fSetCritical;

    hDLL = LoadLibraryA("ntdll.dll");
    if (hDLL != NULL)
    {
        (fSetCritical) = (RtlSetProcessIsCritical)GetProcAddress((HINSTANCE)hDLL, "RtlSetProcessIsCritical");
        if (!fSetCritical) return 0;
        fSetCritical(1, 0, 0);
        return 1;
    }
    else
        return 0;
}

Is there any way to make it work in Python? Here is the link to an article that describes the RtlSetProcessIsCritical function pretty good: https://www.codeproject.com/Articles/43405/Protecting-Your-Process-with-RtlSetProcessIsCriti

CodePudding user response：

Try to load ntdll.dll in python. Requires Pywin32 library.

import win32process
import win32api
import ctypes
from ctypes import *

ntdll = WinDLL("ntdll.dll")
ntdll.RtlSetProcessIsCritical(1,0,0)