This is a video walkthrough of Log 'em All, a difficult Hacking / Reverse Engineering challenge based on a classic bug in Pokemon Red.
If you want to run this yourself, from a Linux computer with Docker (and a user in the appropriate group), run:
$ git clone https://github.com/BSidesSF/ctf-2021-...
$ cd ctf-2021-release/logemall/challenge
$ docker build . -t test
$ docker run -p666:666 --rm -ti test
(Then in another window)
$ nc -v localhost 666