Offical URL:

Jeopardy style CTF held at the Converge Detroit Conference (
Many challenges can be solved online but there are challenges that can only be solved while at the convention and/or connected to the game network.
Know Challenge categories: History, encoding/encryption, reverse engineering, radio, forensics, wifi, logs, network, Lock picking, CANBus, and some scavenger hunts around the convention space.

CTF events

CTF 313 202020.71
CTF 313 201920.71
Related tags: web pwn crypto forensics base64 re coding nothing stuff base32 morse gameboy language hash logs md5 encryption encoding rfc binary rot13 ntlm honeypot rot md2 lmao