2020from public repositories
HeroCTF 2020
4 challenges with 4 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.
Where these writeups liveBinary exploitation2
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
FonceDansLeTas
1 official solutionAlso written up in: Ewael/CTFs
FoncePasDansLeTas
1 official solutionAlso written up in: Ewael/CTFs
Steganography2
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
Solve it with:LSB steganography extractorPNG chunk analyzerAudio spectrogram and SSTV decoderZero-width character and text steganography decoderLearn: Steganography
How To Sftp Pjwebb
1 official solutionAlso written up in: Ewael/CTFs
SteganoPDF
1 official solutionAlso written up in: Ewael/CTFs