Hack.lu CTF 2021 is the 11th edition organized by FluxFingers, the CTF team of Ruhr-University Bochum (Germany).
For updates on the CTF follow us on Twitter: @fluxfingers
If you have any question, you can reach us via Discord. This will be the main communication channel during the CTF, besides the announcements page.
Who
Everyone may participate! You can play alone, but we recommend teaming up because it is more fun and you can learn from each other. The difficulty of our challenges will range from beginner-friendly to super-hard.
When
The CTF will last 48h hours, just like in the previous years. Since there is a Daylight Saving Time transition during the CTF, we added a countdown for your convenience!
Fri, Oct. 29, 18:00 — Sun, Oct. 31, 18:00 UTC
Topic
Stock Market
Registration
What
The CTF event will be challenge-based, i.e. the CTF is separated into small tasks that can be solved individually. The scoreboard will be web-accessible and no VPN is required. We are trying our best to give all participants a delightful experience, the covered topics are somewhere around crypto, web security, reverse engineering and binary exploitation.
Rules
- Each challenge gives a dynamic amount of points based on the number of solves.
- No DoS/automated scans/large amounts of traffic/deleting stuff on our servers.
- If you find something that solves too easy it might be a bug. Please report it for possible bonus points.
- Do not share flags or solutions with other teams. We will not tolerate flag sharing.
- If you break the rules we will kick your butt and remove all your points. Promised.
- The flag format is
flag{.+}if not stated otherwise.