HCTF 2018
8 challenges with 10 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 CTFtimeBinary 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.
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Misc2
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- blockchain
Same technique in picoCTF: Reentrance, Smart_Overflow, Access_Control
- blockchain
Same technique in picoCTF: Reentrance, Smart_Overflow, Access_Control
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- memory_dump
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions