DefCamp CTF 21-22 Online
17 challenges with 42 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 CTFtimeUncategorised5
The upstream scoreboard did not say, so neither do we.
Algorithm
2 official solutionsAlso written up in: pymivn/ctf, OfficialCyberSpace/CTF-Writeups
Blinsight
1 official solutionAlso written up in: niftic.ca
Catch Me If You Can
1 official solutionAlso written up in: OfficialCyberSpace/CTF-Writeups
Raw Proto
1 official solutionAlso written up in: OfficialCyberSpace/CTF-Writeups
Wafer
1 official solutionAlso written up in: pymivn/ctf
Binary exploitation3
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Also written up in: Green-Avocado/CTF, pymivn/ctf, Green-Avocado/CTF
- pwn
- heap
Same technique in picoCTF: vr-school, sice_cream, zero_to_hero
Also written up in: nobodyisnobody/write-ups, Green-Avocado/CTF, Green-Avocado/CTF
- blind
- pwn
- rop
Same technique in picoCTF: lockdown-horses, Guessing Game 1, vr-school
Also written up in: nobodyisnobody/write-ups
Misc3
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: Fckroun/DefCamp-Writeups-2022, pymivn/ctf
- defcamp
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: pymivn/ctf
- misc
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: Fckroun/DefCamp-Writeups-2022
- zlib
- base64
Same technique in picoCTF: Bases, repetitions, PW Crack 2
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- cookie
- web
- flask
Same technique in picoCTF: logon, More Cookies, Cookie Monster Secret Recipe
- sqli
- cve
- web
Same technique in picoCTF: Irish-Name-Repo 3, Startup Company, More SQLi
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- rev
- programming
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
- reversing
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
Forensics2
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Also written up in: pymivn/ctf
- forensics
Same technique in picoCTF: investigation_encoded_2, FindAndOpen, Ph4nt0m 1ntrud3r
Also written up in: pymivn/ctf
- forensics
Same technique in picoCTF: investigation_encoded_2, FindAndOpen, Ph4nt0m 1ntrud3r