2023from public repositories
Zypher 2023
16 challenges with 16 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.
Level 01 Discord Server
1 official solutionLevel 02 Email Header
1 official solutionLevel 03 Pdf
1 official solutionLevel 04 Leo Sinister
1 official solutionLevel 05 Youtube Video
1 official solutionLevel 06 Der Anfang
1 official solutionLevel 07 Audio
1 official solutionLevel 08 Zodiac
1 official solutionLevel 09 F0x3rr
1 official solutionLevel 10 Zypher Quest 1
1 official solutionLevel 12 Pcap
1 official solutionLevel 13 Nft
1 official solutionLevel 14 Zypher Quest 2
1 official solutionLevel 15 Zypher Quest 3
1 official solutionLevel 16 Level8z2
1 official solution
Reverse engineering1
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
Level 11 Zypher Re
1 official solution