frida-hook.py

#python code
import frida
import time

#========= INIT ============
_PACKAGE_ = "com.product.name"
_HOOKINGSCRIPT_ = "hooking_script.js"


def on_message(message, data):
    print("[%s] => %s" % (message, data))


while(True):
  try:
    print("==== Initialing ====")
    device = frida.get_usb_device()
    print("[+] Device: {}".format(device))
    try:
        pid = device.spawn(["com.vietinbank.softotp"])
    except Exception as ex:
        print ex 
    print("[+] PID: {}".format(pid))
    device.resume(pid)
    time.sleep(1) #Without it Java.perform silently fails
    session = device.attach(pid)
    print("[+] Attaching session")

    # session = frida.get_usb_device().attach(_PACKAGE_)
    
    print("[+] Loading hooking script")
    script = session.create_script(open(_HOOKINGSCRIPT_).read())
    script.on('message', on_message)
    script.load()

    print("[*]    Initialing successful\n")
    break
  except Exception as e:
    print("[-] Error: {}".format(e))
    raw_input("Try again?")
    pass
    
#prevent the python script from terminating
raw_input("[Frida-Hooking]\nContinue?[Enter]\n")