2021from the authors’ own sites
Hack The Box Cyber Santa CTF
5 challenges with 5 published solutions between them. The writeups for this event were found on the authors’ own sites.
Where these writeups liveBinary exploitation3
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
Mr Snowy
1 official solutionAlso written up in: roarribbit.blogspot.com
Naught List
1 official solutionAlso written up in: roarribbit.blogspot.com
Sleigh
1 official solutionAlso written up in: roarribbit.blogspot.com
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Solve it with:File type identifier by magic bytesMagic byte and file signature tablePCAP analyzer for CTF network forensicsEXIF metadata viewerLearn: File forensics and carvingLearn: Network forensics
Baby APT
1 official solutionAlso written up in: roarribbit.blogspot.com
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
Infiltration
1 official solutionAlso written up in: roarribbit.blogspot.com