Notes on making CTF games

Some time ago I wrote a post named “unofficial guide to creating CTF VMs“. Since then I have been approached by random people, students I mentor and colleagues asking how to make that virtual machine vulnerable. Well, I never intended that post to reveal that. It was simply left as an exercise to the readers. Today I

An Unofficial Guide to Creating CTF VMs

Today I am going to shed some light on how to create a virtual machine for CTF gaming. This tutorial came to life after a discussion on my Discord server on how to distribute CTF games among friends. In this tutorial we’ll create a Debian based virtual machine, prep it with some software – then