import frida, sys


def on_message(message, data):
    if message['type'] == 'send':
        print("[*] {0}".format(message['payload']))
    else:
        print(message)


PACKAGE_NAME = "sg.vantagepoint.uncrackable1"


jscode= """
console.log("[*] Starting script");

    Java.perform(function() {
    
        console.log("[*] Hooking System.exit");
        exitClass = Java.use("java.lang.System");
        exitClass.exit.implementation = function() {
            console.log("[*] System.exit called");
        }
      
    });

"""
try:
    process = frida.get_usb_device().attach(PACKAGE_NAME)
    script = process.create_script(jscode)
    script.on('message', on_message)
    print('[*] Running Hook')
    script.load()
    sys.stdin.read()
except Exception as e:
    print(e)