I recently competed in the Cyber Apocalypse 2022 CTF on Hackthebox. This was a really fun experience (and my first ever live CTF). I only solved a few challenges (which I'll be writing in subsequent posts), but there was one vexating challenge which I wasn't able to complete. I kinda had the right idea, but I was missing some key pieces of information. The point of this post is to explain what I was missing and how it works (and to document how I would have done it).