VirtualPC CPUID TRICK

//http://waleedassar.blogspot.com (@waleedassar)
//A method to detect VirtualPC
#include "stdafx.h"
#include "windows.h"
#include "stdio.h"

int __cdecl Handler(EXCEPTION_RECORD* pRec,void* est,unsigned char* pContext,void* disp)
{
    if(pRec->ExceptionCode==EXCEPTION_SINGLE_STEP)
    {
        return ExceptionContinueExecution;
    }
    return ExceptionContinueSearch;
}


int main(int argc, char* argv[])
{
    unsigned long x=0;
    __asm
    {
        push offset Handler
        push dword ptr fs:[0x0]
                mov dword ptr fs:[0x0],esp

        pushad
        xor eax,eax
        xor ecx,ecx
        xor edx,edx
        xor ebx,ebx
        pushfd
        pop esi
        or esi,0x100 ;Trap flag
        push esi
        popfd
        CPUID
        pushfd
        pop eax
        mov x,eax
                popad
        pop dword ptr fs:[0x0]
        pop eax
    }
    if(x&0x100)
    {
        MessageBox(0,"Virtual Machine detected","waliedassar",0);
        ExitProcess(3);
    }
    return 0;
}