SEC-T CTF 2019
10 challenges with 14 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.
- baby
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- seccomp
- guess
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- duktape
- seccomp
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
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.
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- rsa
- crypto
- oracle
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- ida
- rev
- android
- re
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
Forensics2
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- forensic
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- forensic
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- minetest
- z3
- logic
Same technique in picoCTF: Permissions, Specialer, Codebook