Coderush 2023
7 challenges with 12 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 liveReverse engineering4
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Keasy
3 official solutionsAlso written up in: gr007-40/writeups, gr007-40/writeups, gr007-40/writeups
Matrix
2 official solutionsAlso written up in: gr007-40/writeups, gr007-40/writeups
Also written up in: gr007-40/writeups
Also written up in: gr007-40/writeups
Binary 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.
Format String
2 official solutionsAlso written up in: gr007-40/writeups, gr007-40/writeups
Also written up in: gr007-40/writeups, gr007-40/writeups
Three Sum
1 official solutionAlso written up in: gr007-40/writeups