idekCTF 2021
26 challenges with 31 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 CTFtimeMisc24
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
File
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Nameless
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Polyphenol
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Shrek's Lover
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Tutorial - Rotting Fruits
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Are You lstening to Me??
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Coffee Shop
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Difference Check
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Doctor's Words
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Fancy Notes
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Generic Pastebin Challenge
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Guardians of the Galaxy
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Hashbrowns
1 writeupSame technique in picoCTF: PW Crack 1, PW Crack 2, PW Crack 3
Profanity Check
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Retrosynthesis
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Rolling on my Own
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Seed of Life
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Shrek's Activities
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
The Obscure Old Registers
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Tutorial - BOF
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Tutorial - Cached
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Tutorial - Intro to GDB
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Unfoldable
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Vanity Check I
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
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.
Stacknotes
1 writeupSame technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
Steganography1
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
Steghide as a Service
1 writeupSame technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden