DEF CON CTF Qualifier 2015
42 challenges with 151 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 CTFtimeUncategorised17
The upstream scoreboard did not say, so neither do we.
Attacker
2 official solutionsAlso written up in: pr0v3rbs/CTF, pr0v3rbs/CTF
Practice Session
2 official solutionsAlso written up in: kikisctf.blogspot.hr, kikisctf.blogspot.com
02. Moonwalk
1 official solutionAlso written up in: pr0v3rbs/CTF
03. Enhance
1 official solutionAlso written up in: pr0v3rbs/CTF
07. Runic Power
1 official solutionAlso written up in: pr0v3rbs/CTF
08. Sigil of Darkness
1 official solutionAlso written up in: pr0v3rbs/CTF
14. Banishing of the Holy Angel 1
1 official solutionAlso written up in: pr0v3rbs/CTF
22. blackSmoke highLow
1 official solutionAlso written up in: pr0v3rbs/CTF
27. Witches Cat
1 official solutionAlso written up in: pr0v3rbs/CTF
34. Absence
1 official solutionAlso written up in: pr0v3rbs/CTF
37. Sanity Check
1 official solutionAlso written up in: pr0v3rbs/CTF
Also written up in: tarafans/CTF-writeup
Mathwize
1 official solutionAlso written up in: geeksspeak.github.io
ROPBaby
1 official solutionAlso written up in: geeksspeak.github.io
Sigil
1 official solutionAlso written up in: ctfhacker/ctf-writeups
Also written up in: 2O2L2H/awesome-ctf-wargame
Also written up in: ctfhacker/ctf-writeups
Binary exploitation11
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: ctfs/write-ups-2015, VulnHub/ctf-writeups, vulnhub/ctf-writeups, AntiRootkit1/write-ups-2015, hcs0/ctf-writeups, TycoRyco/write-ups-2015, geeksspeak.github.io, kikisctf.blogspot.hr, kikisctf.blogspot.com, sysexit.wordpress.com
- shell
- reverse engineering
- exploit
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Fuckup
7 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015, ctfs/write-ups-2015, kitctf/writeups, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, integeruser/on-pwning, TycoRyco/write-ups-2015
- x86
- exploit
- calculator
- compiler
- jit
Same technique in picoCTF: lockdown-horses, Guessing Game 1, Bizz Fuzz
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
- amd64
- debugger
- rop
Same technique in picoCTF: lockdown-horses, Guessing Game 1, vr-school
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
- pwnable
- windows
- rop
Same technique in picoCTF: lockdown-horses, Guessing Game 1, vr-school
Cybergrandsandbox
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Heapsoffun
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Secrf
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Tensixtyseven
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Wibbly Wobbly Timey Wimey
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Also written up in: treebacker/ctf-writeup
Reverse engineering7
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: ctfs/write-ups-2015, smokeleeteveryday/CTF_WRITEUPS, AntiRootkit1/write-ups-2015, TeamColonelPanic/write-ups, TycoRyco/write-ups-2015, smokeleeteveryday/CTF_WRITEUPS, geeksspeak.github.io
- reverse engineering
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
- reverse engineering
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
- programming
- reverse engineering
- pwnable
Same technique in picoCTF: Checkpass, WinAntiDbg0x100, WinAntiDbg0x200
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Knockedupd
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Pr0dk3y
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Scrambler
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Misc6
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: ctfs/write-ups-2015, smokeleeteveryday/CTF_WRITEUPS, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015, smokeleeteveryday/CTF_WRITEUPS, geeksspeak.github.io
- coding
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: ctfs/write-ups-2015, VulnHub/ctf-writeups, vulnhub/ctf-writeups, AntiRootkit1/write-ups-2015, hcs0/ctf-writeups, TycoRyco/write-ups-2015, kitctf/writeups, DhavalKapil/ctf-writeups, geeksspeak.github.io
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: ctfs/write-ups-2015, VulnHub/ctf-writeups, vulnhub/ctf-writeups, smokeleeteveryday/CTF_WRITEUPS, AntiRootkit1/write-ups-2015, hcs0/ctf-writeups, TycoRyco/write-ups-2015, smokeleeteveryday/CTF_WRITEUPS
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: ctfs/write-ups-2015, VulnHub/ctf-writeups, vulnhub/ctf-writeups, AntiRootkit1/write-ups-2015, hcs0/ctf-writeups, TycoRyco/write-ups-2015
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
- misc
- programming
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Patcher
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Waiting For Your Touch
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015