You found a bug on our scoreboard, GREAT! report it and get extra points :)

Each team can only participate under one name.

There are no limits on the number people in a team.

If you are certain that the flag you have is 110% correct and the flag is not getting accepted, let us know through a private message on discord.

Don’t attempt to the distrupt the contest, it will result in disqualification.

Don’t be a jerk! We are all here to learn something new.

We have a dynamic scoreboard. Short and simple, the more teams solve a challenge, the less value the challenge has. The highly sophisticated formula we use:

int(min_points + (max_points - min_points) / (1 + (max(0, solves - 1) / 11.92) ^ 1.206))

All flags are of the form: S4CTF{[0-9a-zA-Z_-]+.}, unless otherwise noted. i.e. S4CTF{some_l33t_string_l1k3_7hi5}

Prizes are reserved for top Iranian teams in both professional and junior categories. Writeup's are required from the winning teams.

Questions on challenges should be directed at the moderators on discord in a private message. There will be no point deduction for legitimate questions :)

Are you a first time CTF player? take a deep breath and stay calm ;), there are no golden rules on what to do, try to work on the challenge and extract the flag, a set of bytes which starts with S4CTF, and submit it. Don’t give up easily and try thinking out of the box. You will get a handle on CTF challenges much faster than you think.

Latest updates will be noted on the announcement page.