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Challenge category:
Welcome
Binary Exploitation Cryptography Forensics Miscellaneous Networks Open-Source Intelligence Radio Frequency Reverse Engineering Web Exploitation Welcome
Sanity Check
50 Points
freebie

Welcome to IrisCTF 2025! As usual, our team has been working hard to make this event happen and we're excited to be bringing these challenges to you. Whether you're a total newbie or a seasoned pro, we hope you'll have fun and learn something new!


This year, we're excited to launch a new CTF platform theme. You can switch between the CTFx and WebGL platform themes at any time. If you're on WebGL, hit "CTFx" at the top of your screen. If you're on CTFx, you can switch to WebGL using the link at the bottom of the page. We recommend CTFx if you run into problems with the WebGL or are on older hardware.


To make sure you know how to switch between the two, go ahead and submit the two halves of the flag found in the "About" page of each site.

By: IrisCTF Organizers
Discord
50 Points
freebie

The real CTF prizes are the friends we make along the way. We invite you to join the IrisCTF Discord server where you can talk in general about the event at: https://discord.gg/sJ956QffSh .


If you run into snags during a challenge or just want to speak to the organizers privately, please open up a ticket in #support . While we can't give solutions or flags, we can help clear up confusions or address problems.


The flag for this item is in the description of #general . Note that solution and flag sharing with other teams is prohibited during the event, just like during any other CTF.

By: IrisCTF Organizers
Exit Survey
50 Points
freebie

As we approach the end of IrisCTF 2025, we would like to thank you for participating this year.


Please find attached below our Exit Survey, and we would love to have your response. In return, we will give you 50 points for free!

Hint!

The secret phrase is: irisctf_2025_ex1tsSvR3y

By: IrisCTF Organisers