2021from public repositories
Ctf Easter Writeups 2021
22 challenges with 25 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 liveUncategorised15
The upstream scoreboard did not say, so neither do we.
Oppgave
4 official solutionsDenne er ganske custom
1 official solutionEmotetemulatoren
1 official solutionFlags
1 official solutionHoydekryptering1
1 official solutionHoydekryptering2
1 official solutionHoydekryptering2 Output
1 official solutionKyllinghjerne
1 official solutionMatte1 Kongruens
1 official solutionMatte2 Rest
1 official solutionMatte3 Kvadratrota
1 official solutionMordecai
1 official solutionPassordknekking
1 official solution
Reverse engineering5
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
Clearcaracal
1 official solutionGlemt oppskrift
1 official solutionHumanagent
1 official solutionNickelpunch
1 official solutionXorkey
1 official solution
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
10poengere
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
Skallsjokk
1 official solution