Hackcon 2015
12 challenges with 36 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised3
The upstream scoreboard did not say, so neither do we.
DidYouMean
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
MakingLoveToBugs
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Pythonista
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Misc3
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
FragG
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
NinjaTurtles
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
SurpriseModafocka
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
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.
AndSoOn
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
LetsLearnDebugging
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
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.
IdLoveToTurnYouOn
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
StealTheDiamond
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.
DoctorDoctor
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
WatchMeSurfTheInternet
3 official solutionsAlso written up in: ctfs/write-ups-2015, AntiRootkit1/write-ups-2015, TycoRyco/write-ups-2015