2025no writeups on CTFtime
VuwCTF 2025
19 challenges with 19 published solutions between them. CTFtime lists this event but has no writeups filed against it, so it is absent from the index CTFtime feeds. These were found in public repositories instead. Each link is pinned to the commit it was read from.
The event on CTFtimeReverse engineering7
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
A New Machine
1 official solutionClassy People Dont Debug
1 official solutionMath Solver
1 official solutionMissing Function
1 official solutionNgawari Vm
1 official solutionString Inspector
1 official solutionTrianglification
1 official solution
Uncategorised7
The upstream scoreboard did not say, so neither do we.
Baby Roomba
1 official solutionBig Roomba
1 official solutionFishsite
1 official solutionJust Upload It
1 official solutionRoomba Rebellion
1 official solutionToaster
1 official solution
Binary exploitation5
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
Solve it with:ROP gadget finderShellcode assembler and libraryCyclic pattern generator and offset finderFormat string exploit builderLearn: Binary exploitation
Blazingly Fast Memory Unsafe
1 official solutionFruit Ninja
1 official solutionIdempotence
1 official solutionKiwiphone
1 official solutionTokaido
1 official solution