// the take
A single example pwnable CTF challenge packaged in Docker, built as companion material to LiveOverflow's YouTube series on Docker for CTFs and binary exploitation. It's for someone setting up their first self-hosted pwn challenge, not a framework for running a CTF at scale.
Shows the actual pattern people use to serve a vulnerable binary over the network: Dockerfile plus ynetd to wrap the binary behind a socket, with a real system_health_check.c binary as the exploit target instead of a toy snippet. The repo is small enough to read end-to-end in a few minutes and copy into your own challenge setup. It's tied to video walkthroughs that cover both the Docker side and the actual exploit development, so the code has real explanatory context behind it even though the README itself doesn't.
The README is just a list of YouTube links — there's no inline explanation of what asd.py does, how ynetd is configured, or why the challenge is built the way it is; you have to watch the linked videos to understand the repo. It's one single example, not a template or scaffold for building multiple challenges, so the reusable part is really just the Docker+ynetd pattern, not the repo as a whole. No commits since February 2024 and it was never intended as an actively maintained project, so don't expect fixes if the base images or ynetd setup break on newer Docker versions.
We read the README, the directory tree and a key source file in October 2026. Nobody pays to be listed. How we judge →