BLACK ALPS

November 20th & 21st, 2025
Yverdon-les-Bains, Switzerland

Ethical hacking contest (CTF)

Showcase your skills. Compete. Win.

As in previous editions, #BlackAlps25 is organizing a Capture The Flag (CTF), a game-like competition that is open to all conference participants and other players for free. After two days of conferences, learning from and being inspired by outstanding speakers, our CTF is a great way to end the event with some fun and adrenaline.

Contest at a glance

The #BlackAlps25 CTF takes place at La Marive, in the main conference room, on Friday, November 21st, 2025, from 18:45 to 00:00.


It is a Jepoardy-style CTF, which means that participants have to solve challenges in different categories (binary analysis, exploitation, forensics, web).


Challenges are divided into different categories (web exploitation, software exploitation, reverse engineering, cryptography, etc.) with different levels accessible to beginner, intermediate and advanced CTF players.

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Participation and
team composition

  • The participation to the Black Alps CTF is open to everyone, conference participants and externals alike.
  • The participation is free-of-charge, but registration is mandatory.
  • People are able to participate individually or by team. A team is limited to 8 participants. (Team registration will be done on site. We don't need the composition before.)
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Further details

Participation is only possible from our local network.

Standard CTF rules apply, details available during the contest.

Take your own materials (laptop, Ethernet cable, etc.).

Please respect the guidelines:

  • No network scan. Stick to challenge IPs
  • No attacks on other players
  • No voluntary Denial-Of-Service of CTF infrastructure
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Prizes

The top3 teams/players will be awarded some cool prizes.
Surprise!

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Location and catering

Black Alps CTF will take place in the main conference room.


La Marive
Quai de Nogent 1
1400 Yverdon-les-Bains, Switzerland


Drinks and food will be available free-of-charge at the Black Dinner next door to CTF room (Swiss cheese raclette, soft drinks, beer).

More information about the location and how to get there on the page “Practical”.


Registration

Registration is mandatory. It is open until November 20th, 2025.

Each participant may register individually. Number of participants is limited.

The participation is free-of-charge.

Welcome at 18:45. Start at 19:15. End at 23:30. Awards ceremony at 23:45.

I register to Black Alps CTF



Organizing partner




HEIG-VD