ToH CTF 2025

Conquer the Tower!

Welcome to ToH CTF 2025! We are Tower of Hanoi, a CTF team based in 🇮🇹 Milan, founded back in 2004. You might remember us from past events such as poliCTF, last hosted in 2017.

Now we're back, bringing you an exciting event suitable for every skill level and interest. This year's competition features diverse challenges across major categories: /pwn, /rev, /web, /crypto, and /misc. Are you up for the challenge? Register your team now and conquer the Tower!

📅 July 19 2025, 04:00 PM UTC (18:00 CEST) (24-hour event)

Registration

Registration will open soon.

📜 Da Rules

Please read the following rules carefully. Violation of any rule may lead to disqualification.

Flag Format: Flags will be in the format toh{[0-9a-zA-Z\-_\?\!]+} unless otherwise specified by the challenge.
Respect Others: Be respectful to other participants and admins. No harassment or offensive behavior will be tolerated.
Flag Sharing: Sharing flags or solutions with other teams is strictly prohibited.
Collaboration: Teams can be of unlimited size. Collaboration between different teams is forbidden.
Respecting Pasta Sustenance during the event cannot include pasta with ketchup. Japanese carbonara compliant with this recipe is allowed, but you are required to provide photographic evidence of the fact.
Scope: Only attack targets explicitly designated as part of the CTF. Attacking any other systems is forbidden. You can attack the infrastructure of the organizers but not that of the event.
Tools: Automated tools that generate high amounts of traffic are not allowed. When in doubt open a ticket before running them.
ToH's Decisions: The Tower of Hanoi decisions are final. 🤌🏼

If you have any doubts about a rule, please ask admins for clarification.

🏆 Sponsors

We are grateful to our sponsors for making this event possible!

Become a sponsor! Contact us for more information.