Many thanks to crowell for giving us the permission to publish his writeup on this blog. Feel also free to take a look at depierre’s one. “At Gunpoint” was a 200 point Reversing challenge in Hack.lu ctf 2014. The description is as follows You 're the sheriff of a small town, investigating news about a gangster squad passing by. Rumor has it they' re easy to outsmart, so you have just followed one to their encampment by the river.