Mark Gukov markgukov

GitHub for Bug Bounty Hunters

GitHub repositories can disclose all sorts of potentially valuable information for bug bounty hunters. The targets do not always have to be open source for there to be issues. Organization members and their open source projects can sometimes accidentally expose information that could be used against the target company. in this article I will give you a brief overview that should help you get started targeting GitHub repositories for vulnerabilities and for general recon.

Mass Cloning

You can just do your research on github.com, but I would suggest cloning all the target's repositories so that you can run your tests locally. I would highly recommend @mazen160's GitHubCloner. Just run the script and you should be good to go.

$ python githubcloner.py --org organization -o /tmp/output

The Problem

Standard practices say no non-root process gets to talk to the Internet on a port less than 1024. How, then, could I get Node talking on port 80 on EC2? (I wanted it to go as fast as possible and use the smallest possible share of my teeny tiny little micro-instance's resources, so proxying through nginx or Apache seemed suboptimal.)

The temptingly easy but ultimately wrong solution:

Alter the port the script talks to from 8000 to 80:

}).listen(80);

	'''
	Simple urllib example to demonstrate how to use the `tls12_http` module.
	'''

	import urllib2
	import json

	from tls12_http import TLS1_2AuthHandler

	client_key = None #'client_key.pem'

	/*
	* base64.js: An extremely simple implementation of base64 encoding / decoding using node.js Buffers
	*
	* (C) 2010, Nodejitsu Inc.
	*
	*/

	var base64 = exports;

	base64.encode = function (unencoded) {