CYRIN's First Capture the Flag Contest
Prizes for the winner, second place, and third place finishers
CYRIN’s Capture the Flag (CTF) challenges let you hone your skills and see how an attacker would exploit configuration weaknesses. All participants start on a level playing field, with the same tools: a fully-loaded Kali Linux box with standard penetration testing tools. Using these tools, your job is to break in to an unknown system on your local network. You have three goals, arranged in increasing level of difficulty:
- Read a web-accessible file that is not intended to be public.
- Read a key file owned by a user on the target system.
- Read a key file owned by the root (administrative) user.
If you get stuck, hints are available—but be careful, the system keeps track of which hints you request!
You will be assessed based on how many of the goals you achieve, how long it takes you, and whether you required any hints to achieve the goals. Participants will be ranked as follows:
- First Place (GOLD): the participant who reads all 3 flag files in the fastest time with no hints used.
PRIZE: FREE LEVEL 3 SUBSCRPTION TO CYRIN FOR 1 YEAR! - Second Place (SILVER): participants who read all 3 flag files, with no hints used, in the second-fastest time.
PRIZE: FREE LEVEL 2 SUBSCRPTION TO CYRIN FOR 1 YEAR! - Third Place (BRONZE): participants who read all 3 flag files, with no hints used, in the third-fastest time.
PRIZE: FREE LEVEL 1 SUBSCRPTION TO CYRIN FOR 1 YEAR! - Runners Up: participants who read all 3 flag files, but required hints to do so, ranked by time required.
- Honorable Mentions: participants who read 1 or 2 of the flag files, ranked by time required.
This CTF scenario lets you see first-hand an attacker's strategies for compromising your systems. Will you be able to get all three flags? Can you gain total control over a target system solely via a web application? Will you do it faster than your peers?
Sign Up Now ... Space is Limited!

Sign Up Here for CYRIN's First Capture the Flag Contest!
Contests are open for 12 hours and can be completed at any time during that window. Select your contest date below.