CTF 313 2019
23 challenges with 23 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 CTFtimeMisc17
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- base32
Same technique in picoCTF: Permissions, Specialer, Codebook
- rot
- encryption
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
- encryption
Same technique in picoCTF: Permissions, Specialer, Codebook
- rfc
Same technique in picoCTF: Permissions, Specialer, Codebook
- morse
Same technique in picoCTF: Permissions, Specialer, Codebook
- base64
Same technique in picoCTF: Bases, repetitions, Permissions
- rot13
Same technique in picoCTF: Permissions, Specialer, Codebook
- md2
Same technique in picoCTF: Permissions, Specialer, Codebook
- language
- encoding
Same technique in picoCTF: Codebook, convertme.py, Bases
- rfc
Same technique in picoCTF: Permissions, Specialer, Codebook
- ntlm
Same technique in picoCTF: Permissions, Specialer, Codebook
- encryption
Same technique in picoCTF: Permissions, Specialer, Codebook
- encoding
Same technique in picoCTF: Codebook, convertme.py, Bases
- gameboy
Same technique in picoCTF: Permissions, Specialer, Codebook
- language
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Cryptography4
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.
- md5
- hash
Same technique in picoCTF: hashcrack, It is my Birthday 2, StegoRSA
- encoding
Same technique in picoCTF: Mr-Worldwide, The Numbers, basic-mod1
- md2
- hash
Same technique in picoCTF: hashcrack, It is my Birthday 2, StegoRSA
- language
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Binary exploitation1
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
- binary
- forensics
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- forensics
- encoding
Same technique in picoCTF: investigation_encoded_1, investigation_encoded_2, Investigative Reversing 0