#include <iostream>
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <vector>

#define KEY_WOW64_64KEY 0x0100
#define KEY_WOW64_32KEY 0x0200

using namespace std;

int* cpuid(int eax, int ecx) {
	static int r[4];

	asm volatile (
		"mov %%eax,%0;"
		"mov %%ecx,%1;"
		"cpuid;"
		: "=a" (r[0]), "=b" (r[1]), "=c" (r[2]), "=d" (r[3])
		: "r" (eax), "r" (ecx)
	);
	return r;
}


vector<unsigned char> intToBytes(int paramInt)
{
     vector<unsigned char> arrayOfByte(4);
     for (int i = 0; i < 4; i++)
         arrayOfByte[3 - i] = (paramInt >> (i * 8));
     return arrayOfByte;
}

int main() {

	int h1, h2, h3, h4;
	h2 = 0;

	int* reg = cpuid(0,0);
	h3 = reg[3];

	cpuid(1,0);
	h1 = reg[3] & 0xFFFFFDFF;
	h4 = reg[0] | 0x20;

	printf(" 0x%08x",h1);
	printf(" 0x%08x",h2);
	printf(" 0x%08x",h3);
	printf(" 0x%08x",h4);
	printf(" ProductID");
	printf(" [f1.xyz_len24]\n");

    HKEY hKey;
    DWORD dwBufSize = 200;
    byte dwReturn[dwBufSize];
    if( RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",0, KEY_QUERY_VALUE | KEY_WOW64_64KEY | KEY_WOW64_32KEY, &hKey) == ERROR_SUCCESS)
    {
        DWORD error = RegQueryValueEx(hKey,"ProductId",0,0, (LPBYTE)dwReturn, &dwBufSize);
        if(error == ERROR_SUCCESS)
        {
            cout << "ProductID: " << dwReturn << endl;
        }
        else
        {
           cout << "Cannot query for key value; Error is : " << error << ", dwBufSize="<<dwBufSize<<endl;
        }
    }
    RegCloseKey(hKey);

UCHAR t[4];
t = intToBytes(h1);
cout << t << endl;
	return 0;
}