Writeups for challenges

17 minute read Published: 2022-10-17

This post contains short writeups for all main challenges of

Scalable CTF infrastructure: Part 1 - Scaling CTFd on GCP

4 minute read Published: 2022-08-31

This post is about the infrastructure behind pwnEd 3, the third installment of the annual CTF competition hosted by SIGINT. This time, 45 teams or approximately 155 users signed up. We used Google Cloud Platform to host CTFd, and DigitalOcean to host our challenges on a Kubernetes cluster. In this post, I'm going to share our architecture and a few tricky bits we faced while setting the CTF up.