Windowsのプロダクトキーを調べるJScript。

productkey.js

function windows_productkey(){
  WshShell = new ActiveXObject( "WScript.Shell" );
  ret = WshShell.RegRead('HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\DigitalProductId');
  DigitalProductId = ret.toArray();
  hexPid = DigitalProductId.slice( 52, 67 );
  decodedChars = Array(24);
  digits = Array("B","C","D","F","G","H","J","K","M","P","Q","R","T","V","W","X","Y","2","3","4","6","7","8","9");
  for ( var i=1; i<30;i++ ){
    if((i % 6) == 0 ){
      decodedChars.push("-");
     }
    else{
      k=0;
      for ( var j=14; j>=0;j--){
        k = ( k << 8 ) ^ hexPid[j];
        hexPid[j] =  parseInt( k /digits.length );
        k = k % digits.length;
      }
      decodedChars.push(digits[k]);
    }
  }
  WScript.Echo(decodedChars.reverse().join(""));
}

windows_productkey();