OOO archive --- DEF CON CTF [ login ]

dc2020q - ooonline-class web

by adamd

This was a jeopardy challenge, part of dc2020q. (CTFtime)

Points: 162
Was solved by: 22 teams
PCAPs: download

You may spawn the server:

On your laptop
  • Install docker
  • docker pull archiveooo/pub:ooonline-class (docker-saved download)
  • docker run -d --name ooonline-class archiveooo/pub:ooonline-class
  • Local IP: docker inspect ooonline-class -f '{{ .NetworkSettings.Networks.bridge.IPAddress }}'
  • Connect to that IP:5000 — Remember to docker rm -f when done.
On your laptop (full source)
  • Install docker and pip install PyYAML coloredlogs
  • git clone
  • cd ooonline-class
  • ./spawner --log-level=INFO
  • Connect to the ip:port displayed
Hosted by OOO Right now we're asking players to login first.


Ugh, everything's moving to online classes now.

There's one assignment that I can't solve (and chegg is no help).

I'm about to yeet my laptop.

Also see ooonline-gradclass


None yet :(
If you wish, you can contribute some.


Spoilers ahead! Code for this challenge is publicly available.