Name		Name	Last commit message	Last commit date
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distribution		distribution
exploit		exploit
writeup		writeup
README.md		README.md

README.md

Checksumz

Author

lambda

Description

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

Distribution

checksumz.tar.gz
https://github.com/IrisSec/IrisCTF-2025-Challenges/tree/main/checksumz/dist

Points

432

Solves

39

Writeup

https://0x4200.cafe/irisctf-2025.html