HSCTF 8
34 challenges with 105 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 CTFtimeMisc15
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
message-board
6 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
NRC
6 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
- automation
- algo
- pwntools
Same technique in picoCTF: Permissions, Specialer, Codebook
big-blind
4 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
digits-of-pi-2
4 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
grading
4 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
hopscotch
4 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
class-meets
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
digits-of-pi
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
extended-fibonacci-sequence2
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
geomapping1
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Multidimensional
3 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
extended-fibonacci-sequence
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
- algo
- dynamicprogramming
Same technique in picoCTF: Permissions, Specialer, Codebook
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
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
- rsa-crypto
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
Binary exploitation4
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
- heap
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- heap
- global_max_fast
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
- pwn
- shellcode
Same technique in picoCTF: Binary Gauntlet 2, ropfu, solfire
Steganography4
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
pallets-of-gold
5 writeups- stego
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
- steganography
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
LSBlue
4 writeupsSame technique in picoCTF: What Lies Within, Milkslap, MSB
audio-frequency-stego
3 writeupsSame technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
Reverse engineering3
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- rev
- python
Same technique in picoCTF: keygenme-py, Shop, patchme.py
- java
- reverse
Same technique in picoCTF: vault-door-1, vault-door-3, vault-door-4
- rev
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
OSINT2
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
geomapping2
3 writeups- osint
Same technique in picoCTF: Permissions, Specialer, Codebook
- misc
- osint
Same technique in picoCTF: Permissions, Specialer, Codebook