main.dart

import 'dart:io';
import 'raja.dart' deferred as rajascript;

void main() {
  final raja = new File(".raja_was_here");
  if (raja.existsSync()) {
    // Raja Was Here, load another script!
    raja.deleteSync();
    rajascript.loadLibrary().then((_) => rajascript.run());
  } else {
    print("Did you know you can run Dart from HTTP URLs?");
    print("Always remember to be safe when running random scripts online!");
    print("It's the same as downloading a random EXE and running it!");
    print("But don't worry, this script is fine!");
    print("We haven't done anything to your computer. Don't worry.");
    
    raja.writeAsStringSync("Hello, this is Raja you computer has a virus please pay us \$300 to remove OK?");
  }
}

raja.dart

import 'dart:io';

void run() {
  print("SIR DONT WORRY");
  print("HELLO THIS IS RAJA YOU COMPUTER HAS VIRUS PLEASE PAY \$300 TO REMOVE OK?");
  print("WE ACCEPT VISA AND MASTERPAL");
  print("YOU ARE A ${Platform.operatingSystem.toUpperCase()}");
  if (Platform.isWindows) {
    print("Please RDP to localhost:80");
    print("Your ${Platform.operatingSystem.toUpperCase()} is corrupt at ${Platform.localHostname.toUpperCase()}, please reinstall your operating system toll free at these following telephone numbers:");
    print("""
\tAustralia: +61-3-8652-1453
\tNew Zealand: +64-9-886-0565
\tUK: +44-11-7325-7425
\tUSA: +1-760-706-7425
""");
    print("Thank you for calling please come again");
  } else {
    print("");
    print("* HANGS UP");
  }
}