Securinets CTF Quals 2015
10 challenges with 12 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 CTFtimeSteganography3
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
- stegano
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- stegano
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- stegano
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
Misc3
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- logic
Same technique in picoCTF: Permissions, Specialer, Codebook
- prog
Same technique in picoCTF: Permissions, Specialer, Codebook
- crack
Same technique in picoCTF: Permissions, Specialer, Codebook
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- crack
- reverse engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- unpacking
- keygening
- reverse engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
Web1
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: logon, Cookie Monster Secret Recipe, Old Sessions
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions