2025weight 18.70K!nd4SUS

K!nd4SUS CTF 2025

3 challenges with 7 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.

Full task list on CTFtime

Web2

Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.

Solve it with:JWT decoder and signature verifier JWT alg=none bypass generator Web attack payload catalog JWT secret brute force Learn: Sessions, tokens and access control

SUS Archive
493 pts1 writeup
Also written up in: MicheleMosca/CTF, MicheleMosca/CTF
- web
Same technique in picoCTF: Live Art, secure-email-service, No FA
UnderConstruction
460 pts1 writeup
Also written up in: MicheleMosca/CTF, MicheleMosca/CTF
- web
Same technique in picoCTF: Live Art, secure-email-service, No FA

Misc1

Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.

Solve it with:Brainfuck and esolang decoder Cipher identifier and automatic decoder Regex tester with match offsets and capture groups Learn: Recognising encodings

Decompiled
1 official solution
Also written up in: napwnli/napwnli_writeups

Web2

SUS Archive

UnderConstruction

Misc1

Decompiled

Other 2025 events