eBPF Capture the Flag lab

You're going to build an eBPF program then use it to stop evil hackers.

Rules

1. Don't cheat by decoding ./bin/flag1.sh 🔍
2. If you are really stuck ask for help 💁
3. If you're really really stuck there are snapshots of completed stages under ./lab/{stage}-completed but try not to use them

Prize

I have British delicacies for the winner.

Environement

Building eBPF requires linux and a bunch of tooling.

Because that setup is boring I've done it for you, create a codespace from this repo and you should be all good to go 🚀

Tutorial Part

Get to know eBPF and create

1. ./lab/1-install-cilium-ebpf.md
2. ./lab/2-make-golang-heart-ebpf.md

Catpure the flag part

1. ./lab/3-capture-flag-mystery-address.md