2019found by harvest
BCTF 2019 finals
5 challenges with 7 published solutions between them. No writeups were ever filed against this event's listing, so its solutions were found in public repositories instead. Each link is pinned to the commit it was read from.
The event listingUncategorised4
The upstream scoreboard did not say, so neither do we.
Local
2 official solutionsAlso written up in: pr0cf5/CTF-writeups, ch0rse/CTF-writeups
Also written up in: perfectblue/ctf-writeups, rollsafe/ctf-writeups
Check
1 official solutionAlso written up in: ThinerDAS/writeup
Ruscas
1 official solutionAlso written up in: aweinstock314/aweinstock-ctf-writeups
Binary exploitation1
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
Kpets
1 official solutionAlso written up in: Jinmo/ctfs