Hack-A-Sat Qualifiers
9 challenges with 16 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 CTFtimeMisc5
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- space
- satellites
Same technique in picoCTF: Permissions, Specialer, Codebook
- xtce
- decode
Same technique in picoCTF: Permissions, Specialer, Codebook
- qpsk
- radio
- gnuradio
- wav
Same technique in picoCTF: Permissions, Specialer, Codebook
- geometry
- image
- space
Same technique in picoCTF: Permissions, Specialer, Codebook
- telemetry
- xtce
Same technique in picoCTF: Permissions, Specialer, Codebook
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- space
- octal
- reversing
- history
- retro
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- sparc
- reverse_engineering
- pwn
- satellites
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
Cryptography1
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
- timing
- cache
- aes
- aes-ecb
- aeskey
- timing-attack
- side
Same technique in picoCTF: Timestamped Secrets, AES-ABC, Compress and Attack
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.
- mips
- pwn
- firmware
- reversing
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3