HITCON CTF 2023 Quals
43 challenges with 96 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 CTFtimeUncategorised33
The upstream scoreboard did not say, so neither do we.
Collision
6 official solutionsAlso written up in: maple3142/My-CTF-Challenges, mmm-team/public-writeups, maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges, mmm-team/public-writeups
Wall Maria
6 official solutionsAlso written up in: AvavaAYA/ctf-writeup-collection, AvavaAYA/ctf-writeup-collection, AvavaAYA/ctf-writeup-collection, AvavaAYA/ctf-writeup-collection, AvavaAYA/ctf-writeup-collection, shift-crops/CTFWriteups
Also written up in: maple3142/My-CTF-Challenges, mmm-team/public-writeups, maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges, mmm-team/public-writeups
Not Just usbpcap
4 official solutionsAlso written up in: mmm-team/public-writeups, t510599/My-CTF-Challenges, t510599/My-CTF-Challenges, t510599/My-CTF-Challenges
Chall
3 official solutionsAlso written up in: maple3142/My-CTF-Challenges, m1dm4n/CTF-WriteUp, a-p-n/CTF-solutions
Random Shuffling Algorithm
3 official solutionsAlso written up in: maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges, m1dm4n/CTF-WriteUp
Canvas
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, S1d3man/My-CTF-Writeups
EZRSA
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges
Full Chain The Blade
2 official solutionsAlso written up in: mmm-team/public-writeups, mmm-team/public-writeups
Full Chain Wall Sina
2 official solutionsAlso written up in: mmm-team/public-writeups, mmm-team/public-writeups
Lisp.js
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, mmm-team/public-writeups
Login System
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, maple3142/My-CTF-Challenges
Also written up in: mmm-team/public-writeups, mmm-team/public-writeups
Server
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, Hope0351/CTF-collection
Wall Rose
2 official solutionsAlso written up in: shift-crops/CTFWriteups, shift-crops/CTFWriteups
Wall Rose Unsolved
2 official solutionsAlso written up in: SolarDebris/writeups, SolarDebris/writeups
Also written up in: mmm-team/public-writeups
Also written up in: splitline/My-CTF-Challenges
Also written up in: splitline/My-CTF-Challenges
Also written up in: maple3142/My-CTF-Challenges
Crazyarcade
1 official solutionAlso written up in: mmm-team/public-writeups
Also written up in: n132/CTF-Write-Up
Full Chain Wall Umi
1 official solutionAlso written up in: mmm-team/public-writeups
Harmony
1 official solutionAlso written up in: maple3142/My-CTF-Challenges
Hitoj
1 official solutionAlso written up in: mmm-team/public-writeups
Kernel Exploit Post Ctf
1 official solutionAlso written up in: mmm-team/public-writeups
Also written up in: Pusty/writeups
Pwnit
1 official solutionAlso written up in: mephi42/ctf
Pwnit V1 Modprobe
1 official solutionAlso written up in: mephi42/ctf
Qemu Escape Wall Maria Exploit
1 official solutionAlso written up in: Diego-AltF4/writeups
Sharer
1 official solutionAlso written up in: splitline/My-CTF-Challenges
Sploit
1 official solutionAlso written up in: mmm-team/public-writeups
Wall Sina
1 official solutionAlso written up in: n132/CTF-Write-Up
Cryptography2
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.
Share
5 official solutionsAlso written up in: maple3142/My-CTF-Challenges, mmm-team/public-writeups, maple3142/My-CTF-Challenges, mmm-team/public-writeups, zukash/ctf-writeup
Also written up in: mmm-team/public-writeups
- crypto
- padding-oracle
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Login Sys
2 official solutionsAlso written up in: maple3142/My-CTF-Challenges, yassinebk/ctf-writeups
- tls
- web
- sxg
- certificate
Same technique in picoCTF: Live Art, secure-email-service, No FA
Binary exploitation2
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: jt00000/ctf.writeup
- vm-escape
- pwn
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Working.Exploit
1 official solutionAlso written up in: nobodyisnobody/write-ups
Reverse engineering2
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: mmm-team/public-writeups, mmm-team/public-writeups, rivit98/ctf-writeups
- subleq
- vm
- reverse
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
VM] LessEQualmore
1 official solutionAlso written up in: deayzl.tistory.com
Misc2
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Full Chain - Wall Rose
1 writeupAlso written up in: mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mmm-team/public-writeups, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo, mito753/Kernel-Exploit-Dojo
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Full Chain - Wall Maria
2 writeupsAlso written up in: nobodyisnobody/write-ups, mmm-team/public-writeups
Same technique in picoCTF: PW Crack 2, Permissions, Specialer