Blue Water CTF 2024
14 challenges with 19 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 CTFtimeUncategorised6
The upstream scoreboard did not say, so neither do we.
Pwnit
2 official solutionsAlso written up in: mephi42/ctf, mephi42/ctf
Also written up in: strellic/my-ctf-challenges
Purify.Min
1 official solutionAlso written up in: strellic/my-ctf-challenges
RSAjail
1 official solutionAlso written up in: thesavageteddy.github.io
RSAjail 3
1 official solutionAlso written up in: satoki/ctf_writeups
SpongeBox Bringing Linux Logical Vulnerabilities Back To Life
1 official solutionAlso written up in: blog.perfect.blue
Cryptography6
Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.
GCM101
2 official solutionsAlso written up in: tranminhprvt01/CTF-writeups, tranminhprvt01/CTF-writeups
Kyber Noncense
2 official solutionsAlso written up in: a-p-n/CTF-solutions, tranminhprvt01/CTF-writeups
Chall
1 official solutionAlso written up in: tranminhprvt01/CTF-writeups
Counter Strike
1 official solutionAlso written up in: tranminhprvt01/CTF-writeups
Also written up in: rerrorctf/writeups
MD5.01
1 official solutionAlso written up in: rerrorctf/writeups
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Also written up in: rerrorctf/writeups
- rev
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Also written up in: rerrorctf/writeups
- go
- path-traversal
Same technique in picoCTF: Specialer, PW Crack 2, Permissions