TrollCAT CTF 2021
24 challenges with 36 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 CTFtimeForensics8
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- networking
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- forensics
- misc
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- memory_dump
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- memory_dump
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- pcap
Same technique in picoCTF: FindAndOpen, WebNet0, WebNet1
- memory_dump
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
Cryptography6
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
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: hashcrack, It is my Birthday 2, StegoRSA
- cryptography
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Misc5
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
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.
- 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
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- reverse
- engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- reversing
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
OSINT
1 writeup- writeup
- osint
- video
Same technique in picoCTF: Permissions, Specialer, Codebook