JUST CTF 2021
7 challenges with 8 published solutions between them. No writeups were ever filed against this event's listing, so its solutions were found in public repositories instead. Each link is pinned to the commit it was read from.
The event listingUncategorised5
The upstream scoreboard did not say, so neither do we.
Thats Not Crypto
2 official solutionsAlso written up in: Kasimir123/CTFWriteUps, qxxxb/ctf
De Obf
1 official solutionAlso written up in: 1GN1tE/CTF_Writeups
Get Vals
1 official solutionAlso written up in: 1GN1tE/CTF_Writeups
justCTF
1 official solutionAlso written up in: atuc17/CTF
Also written up in: yadhukrishnam/CTF-Notes
Binary exploitation1
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Qmail
1 official solutionAlso written up in: epicleet/write-ups
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Reklest
1 official solutionAlso written up in: epicleet/write-ups