Welcome to ctfs.fun 2025

Our Sponsors

ctfs.fun 2025 is made possible by the generous support of our sponsors who believe in fostering cybersecurity talent and innovation.

Authors

Meet the team behind ctfs.fun 2025. Our dedicated authors create challenging and educational cybersecurity problems for the community.

Competition Rules

General Rules

1. All participants must register with valid information and create or join a team.
2. Each team can have a maximum of 5 members.
3. Teams must not share flags, solutions, or hints with other teams.
4. Automated scanning or attacking of the competition infrastructure is prohibited.
5. Any form of cheating, including but not limited to flag sharing, will result in immediate disqualification.

Challenge Rules

1. Challenges are available throughout the 48-hour competition period.
2. Points are awarded based on challenge difficulty and solve time.
3. First blood bonuses are awarded to teams who solve challenges first.
4. Flags must be submitted in the correct format: FLAG{...}
5. Brute-forcing flag submissions is not allowed.

Conduct

1. Respect all participants and organizers.
2. Do not attempt to attack other teams or their infrastructure.
3. Report any technical issues or suspicious activity immediately.
4. Decisions by the organizing team are final.