2022from public repositories
AIS3 Pre exam 2022
19 challenges with 21 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised12
The upstream scoreboard did not say, so neither do we.
JeetQode
2 official solutionsPrivate Browsing
2 official solutionsB64DLE
1 official solutionFast Cipher
1 official solutionFlag Checker
1 official solutionPekobot
1 official solutionPettan
1 official solutionReally Strange orAcle
1 official solutionShamiko
1 official solutionUTF 8 Editor
1 official solution
Misc4
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Solve it with:Brainfuck and esolang decoderCipher identifier and automatic decoderRegex tester with match offsets and capture groupsLearn: Recognising encodings
Excel
1 official solutionGift in the dream
1 official solutionKnock
1 official solutionSeadog's Webshell
1 official solution
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Solve it with:Strings extractor for binaries and blobsWebAssembly disassemblerJava .class disassemblerPython .pyc bytecode disassemblerLearn: Binary exploitation
Calculator
1 official solutionStrings
1 official solution
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Solve it with:JWT decoder and signature verifierJWT alg=none bypass generatorWeb attack payload catalogJWT secret brute forceLearn: Web attacks and session tokens
Poking Bear
1 official solution