OOO archive --- DEF CON CTF [ login ]

dc2021q - gran-a-fallen-lap-ray pwn

by adamd, zardus

This was a jeopardy challenge, part of dc2021q.

This challenge was represented as 👵
Points: 460
Was solved by: 2 teams

You may spawn the server:

On your laptop
  • Install docker
  • docker pull archiveooo/pub:gran-a-fallen-lap-ray (docker-saved download)
  • docker run -d --name gran-a-fallen-lap-ray archiveooo/pub:gran-a-fallen-lap-ray
  • Local IP: docker inspect gran-a-fallen-lap-ray -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 (notice below)
  • cd gran-a-fallen-lap-ray
  • ./spawner --log-level=INFO
  • Connect to the ip:port displayed
Hosted by OOO Right now we're asking players to login first.


Added an additional security feature to mama-a-fallen-lap-ray. Flag is in current directory called flag.

Part of a three-challenge combo with baby-a-fallen-lap-ray and gran-a-fallen-lap-ray

line_weight gran-a-fallen-lap-ray.tar.gz


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


Spoilers ahead! Code for this challenge is publicly available. Includes all three versions.