# DevilDiagram

Midnight CTF 2026 challenge by Serrac.

# Challenge

> **Subject:** Evidence Item #4B - "The St. Jude's Tapes"
> **Background:**
> St. Jude’s Asylum was shuttered in 1988 after the "incident" in the basement ward. Last night, urban explorers found an old medical XY-plotter plugged into a dead outlet. It was moving on its own.
> They recorded the sound of the machine screeching in the dark. It seems to be trying to draw something.
> **Objective:** Decipher the audio to see what the machine drew.
