Codefest CTF 2017
9 challenges with 13 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 CTFtimeSteganography5
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
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.
- exploitation
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- exploitation
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
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: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- crypt
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions