#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Author : AloneMonkey
# blog: www.alonemonkey.com

import sys
import codecs
import frida
import threading
import os
import shutil
import time
import argparse
import tempfile
import subprocess
import re

import paramiko
from paramiko import SSHClient
from scp import SCPClient
from tqdm import tqdm
import traceback

script_dir = os.path.dirname(os.path.realpath(__file__))

DUMP_JS = os.path.join(script_dir, 'dump.js')

User = 'root'
Password = 'alpine'
Host = 'localhost'
Port = 2222

TEMP_DIR = tempfile.gettempdir()
PAYLOAD_DIR = 'Payload'
PAYLOAD_PATH = os.path.join(TEMP_DIR, PAYLOAD_DIR)
file_dict = {}

finished = threading.Event()


def get_usb_iphone():
    Type = 'usb'
    if int(frida.__version__.split('.')[0]) < 12:
        Type = 'tether'
    device_manager = frida.get_device_manager()
    changed = threading.Event()

    def on_changed():
        changed.set()

    device_manager.on('changed', on_changed)

    device = None
    while device is None:
        devices = [dev for dev in device_manager.enumerate_devices() if dev.type == Type]
        if len(devices) == 0:
            print('Waiting for USB device...')
            changed.wait()
        else:
            device = devices[0]

    device_manager.off('changed', on_changed)

    return device


def generate_ipa(path, display_name):
    ipa_filename = display_name + '.ipa'

    print('Generating "{}"'.format(ipa_filename))
    try:
        app_name = file_dict['app']

        for key, value in file_dict.items():
            from_dir = os.path.join(path, key)
            to_dir = os.path.join(path, app_name, value)
            if key != 'app':
                shutil.move(from_dir, to_dir)

        target_dir = './' + PAYLOAD_DIR
        zip_args = ('zip', '-qr', os.path.join(os.getcwd(), ipa_filename), target_dir)
        subprocess.check_call(zip_args, cwd=TEMP_DIR)
        shutil.rmtree(PAYLOAD_PATH)
    except Exception as e:
        print(e)
        finished.set()

def on_message(message, data):
    t = tqdm(unit='B',unit_scale=True,unit_divisor=1024,miniters=1)
    last_sent = [0]

    def progress(filename, size, sent):
        t.desc = os.path.basename(filename).decode("utf-8")
        t.total = size
        t.update(sent - last_sent[0])
        last_sent[0] = 0 if size == sent else sent

    if 'payload' in message:
        payload = message['payload']
        if 'dump' in payload:
            origin_path = payload['path']
            dump_path = payload['dump']

            scp_from = dump_path
            scp_to = PAYLOAD_PATH + '/'

            with SCPClient(ssh.get_transport(), progress = progress, socket_timeout = 60) as scp:
                scp.get(scp_from, scp_to)

            chmod_dir = os.path.join(PAYLOAD_PATH, os.path.basename(dump_path))
            chmod_args = ('chmod', '655', chmod_dir)
            try:
                subprocess.check_call(chmod_args)
            except subprocess.CalledProcessError as err:
                print(err)

            index = origin_path.find('.app/')
            file_dict[os.path.basename(dump_path)] = origin_path[index + 5:]

        if 'app' in payload:
            app_path = payload['app']

            scp_from = app_path
            scp_to = PAYLOAD_PATH + '/'
            with SCPClient(ssh.get_transport(), progress = progress, socket_timeout = 60) as scp:
                scp.get(scp_from, scp_to, recursive=True)

            chmod_dir = os.path.join(PAYLOAD_PATH, os.path.basename(app_path))
            chmod_args = ('chmod', '755', chmod_dir)
            try:
                subprocess.check_call(chmod_args)
            except subprocess.CalledProcessError as err:
                print(err)

            file_dict['app'] = os.path.basename(app_path)

        if 'done' in payload:
            finished.set()
    t.close()

def compare_applications(a, b):
    a_is_running = a.pid != 0
    b_is_running = b.pid != 0
    if a_is_running == b_is_running:
        if a.name > b.name:
            return 1
        elif a.name < b.name:
            return -1
        else:
            return 0
    elif a_is_running:
        return -1
    else:
        return 1


def cmp_to_key(mycmp):
    """Convert a cmp= function into a key= function"""

    class K:
        def __init__(self, obj):
            self.obj = obj

        def __lt__(self, other):
            return mycmp(self.obj, other.obj) < 0

        def __gt__(self, other):
            return mycmp(self.obj, other.obj) > 0

        def __eq__(self, other):
            return mycmp(self.obj, other.obj) == 0

        def __le__(self, other):
            return mycmp(self.obj, other.obj) <= 0

        def __ge__(self, other):
            return mycmp(self.obj, other.obj) >= 0

        def __ne__(self, other):
            return mycmp(self.obj, other.obj) != 0

    return K


def get_applications(device):
    try:
        applications = device.enumerate_applications()
    except Exception as e:
        sys.exit('Failed to enumerate applications: %s' % e)

    return applications


def list_applications(device):
    applications = get_applications(device)

    if len(applications) > 0:
        pid_column_width = max(map(lambda app: len('{}'.format(app.pid)), applications))
        name_column_width = max(map(lambda app: len(app.name), applications))
        identifier_column_width = max(map(lambda app: len(app.identifier), applications))
    else:
        pid_column_width = 0
        name_column_width = 0
        identifier_column_width = 0

    header_format = '%' + str(pid_column_width) + 's  ' + '%-' + str(name_column_width) + 's  ' + '%-' + str(
        identifier_column_width) + 's'
    print(header_format % ('PID', 'Name', 'Identifier'))
    print('%s  %s  %s' % (pid_column_width * '-', name_column_width * '-', identifier_column_width * '-'))
    line_format = '%' + str(pid_column_width) + 's  ' + '%-' + str(name_column_width) + 's  ' + '%-' + str(
        identifier_column_width) + 's'
    for application in sorted(applications, key=cmp_to_key(compare_applications)):
        if application.pid == 0:
            print(line_format % ('-', application.name, application.identifier))
        else:
            print(line_format % (application.pid, application.name, application.identifier))


def load_js_file(session, filename):
    source = ''
    with codecs.open(filename, 'r', 'utf-8') as f:
        source = source + f.read()
    script = session.create_script(source)
    script.on('message', on_message)
    script.load()

    return script


def create_dir(path):
    path = path.strip()
    path = path.rstrip('\\')
    if os.path.exists(path):
        shutil.rmtree(path)
    try:
        os.makedirs(path)
    except os.error as err:
        print(err)


def open_target_app(device, name_or_bundleid):
    print('Start the target app {}'.format(name_or_bundleid))

    pid = ''
    session = None
    display_name = ''
    bundle_identifier = ''
    for application in get_applications(device):
        if name_or_bundleid == application.identifier or name_or_bundleid == application.name:
            pid = application.pid
            display_name = application.name
            bundle_identifier = application.identifier

    try:
        if not pid:
            pid = device.spawn([bundle_identifier])
            session = device.attach(pid)
            device.resume(pid)
        else:
            session = device.attach(pid)
    except Exception as e:
        print(e) 

    return session, display_name, bundle_identifier


def start_dump(session, ipa_name):
    print('Dumping {} to {}'.format(display_name, TEMP_DIR))

    script = load_js_file(session, DUMP_JS)
    script.post('dump')
    finished.wait()

    generate_ipa(PAYLOAD_PATH, ipa_name)

    if session:
        session.detach()


if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='frida-ios-dump (by AloneMonkey v2.0)')
    parser.add_argument('-l', '--list', dest='list_applications', action='store_true', help='List the installed apps')
    parser.add_argument('-o', '--output', dest='output_ipa', help='Specify name of the decrypted IPA')
    parser.add_argument('target', nargs='?', help='Bundle identifier or display name of the target app')
    args = parser.parse_args()

    exit_code = 0
    ssh = None

    if not len(sys.argv[1:]):
        parser.print_help()
        sys.exit(exit_code)

    device = get_usb_iphone()

    if args.list_applications:
        list_applications(device)
    else:
        name_or_bundleid = args.target
        output_ipa = args.output_ipa

        try:
            ssh = paramiko.SSHClient()
            ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            ssh.connect(Host, port=Port, username=User, password=Password)

            create_dir(PAYLOAD_PATH)
            (session, display_name, bundle_identifier) = open_target_app(device, name_or_bundleid)
            if output_ipa is None:
                output_ipa = display_name
            output_ipa = re.sub('\.ipa$', '', output_ipa)
            if session:
                start_dump(session, output_ipa)
        except paramiko.ssh_exception.NoValidConnectionsError as e:
            print(e) 
            exit_code = 1
        except paramiko.AuthenticationException as e:
            print(e) 
            exit_code = 1
        except Exception as e:
            print('*** Caught exception: %s: %s' % (e.__class__, e))
            traceback.print_exc()
            exit_code = 1

    if ssh:
        ssh.close()

    if os.path.exists(PAYLOAD_PATH):
        shutil.rmtree(PAYLOAD_PATH)

    sys.exit(exit_code)