https://github.com/IrisSec/IrisCTF-2025-Challenges
easy
World‘s most secure paste app.
nc sqlate.chal.irisc.tf 10000
[sqlate.tar.gz](<https://cdn.2025.irisc.tf/sqlate.tar.gz>)
By:lambda
medium
kernel
Someone told me that I can write faster programs by putting them into kernel modules, so I replaced my checksum function with a char device.
[<https://instancer.chal.irisc.tf/challenge/checksumz>](<https://instancer.chal.irisc.tf/challenge/checksumz>)
[checksumz.tar.gz](<https://cdn.2025.irisc.tf/checksumz.tar.gz>)
By:lambda
medium
wowzers, a brand new file sharing service that supports WinZip ZIP ™️ files???!?!?! I need to get on this right now!!!1
Note: the invite code on remote and in the files are intentionally not the same code.
Note: it is not necessary to brute force the invite code.
nc myfiles.chal.irisc.tf 10001
[files](<https://cdn.2025.irisc.tf/myfiles.tar.gz>)
By:nope
baby
It looks like skat finally remembered to use his password manager! One small problem though, he forgot his password to the password manager!
Can you help him log back in so he can get back to his favorite RF forums?
[<https://password-manager-web.chal.irisc.tf>](<https://password-manager-web.chal.irisc.tf>)
[password-manager.tar.gz](<https://cdn.2025.irisc.tf/password-manager.tar.gz>)
By:User