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IrisCTF is a 48-hour Capture the Flag competition organized by IrisSec. IrisCTF takes place the first weekend of every year online and features challenges in the disciplines of reverse engineering, binary exploitation, web exploitation, cryptography, radio frequency, networks, forensics, open-source intelligence, and more. IrisCTF is meant to be, above all else, a fun, lighthearted, and educational experience for all.
Proudly sponsored by:

OtterSec is a blockchain security company focused on identifying and patching critical exploits before our clients go to market. Our team consists largely of CTF players that enjoy solving difficult problems. If you think you are a good fit, please apply through our careers page below.


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Hack The Box is an online cybersecurity training platform offering hands-on labs, virtual machines, and challenges to help individuals and teams improve their ethical hacking skills. It provides a platform for beginners and experts alike to learn in a safe environment.


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Infra sponsored by goo.gle/ctfsponsorship.

Prizes:
Winners will receive:
  • 1st: US$512 cash, HTB 3x 1-Year VIP+ & 3x 3-Month Prolabs.
  • 2nd: US$256 cash, HTB 3x 1-Year VIP+ & 3x 1-Month Prolabs.
  • 3rd: US$128 cash, HTB 3x 6-Month VIP+.
  • Top 5 teams will each receive 3x commemorative tokens and event stickers.

We will additionally host a post-event writeup competition where US$20 cash prizes will be rewarded to the top 15 writeups. If you are playing for prizes, please read the prize distribution terms and conditions.

Rules
  • Refrain from sharing flags or solutions with other teams before the end of the event.
  • Attacking, DoSing, or otherwise deliberately harming the event infrastructure is strictly prohibited and will result in an immediate ban and block from the event.
  • Refrain from bruteforcing anything hosted on the event infrastructure, including flag submissions.
  • The flag format is irisctf{flag_string} unless otherwise stated.
  • The event starts on 4 Jan 2025 @ 00:00 UTC and lasts for exactly 48 hours.
  • One account per team. Your team shares the same account.