Security Fest 2019
20 challenges with 38 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 exploitation9
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
- rop
Same technique in picoCTF: Guessing Game 1, x-sixty-what, Binary Gauntlet 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
- 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
- kernel
- 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
- kernel
- arm
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
Misc5
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Hydra
5 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
Signal
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
cactus
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
- misc
- lockpicking
Same technique in picoCTF: Permissions, Specialer, Codebook
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
- maths
- warm-up
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
- crypto
- rev
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
- osint
- crypto
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
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- rev
- crypto
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- rev
- crypto
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300