ADDA CTF
6 challenges with 13 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 listingUncategorised4
The upstream scoreboard did not say, so neither do we.
Kernauth
6 official solutionsAlso written up in: mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo
Script
2 official solutionsAlso written up in: Re-Adventures/CTF-Writeups, DaBaddest/CTF-Writeups
Elvspeak
1 official solutionAlso written up in: Acelxrd95/CTF-Writeups
PassWORLDE
1 official solutionAlso written up in: Acelxrd95/CTF-Writeups
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Elves
2 official solutionsAlso written up in: acdwas/ctf, acdwas/ctf
Also written up in: acdwas/ctf