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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

Register here.

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