Midnight Sun CTF 2018 Finals
9 challenges with 11 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.
- arm
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
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.
- secret-sharing
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- python
- coredump
- aes
Same technique in picoCTF: Timestamped Secrets, AES-ABC, Compress and Attack
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- electronics
- hardware
- re
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- esp32
- dga
- reverse
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.
- csp
- xss
Same technique in picoCTF: notepad, noted, Client-side-again
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- imagetragic
Same technique in picoCTF: Permissions, Specialer, Codebook