brain-repl CTF problem/writeup

This repo contains the a binary exploitation challenge and solution script.

You can read the full writeup on my blog post:

https://travisf.net/brain-repl-writeup

Files

• brain-repl-ctf-problem.tgz: archive with problem
• brain-repl-ctf-problem/Makefile: was used to build problem
• brain-repl-ctf-problem/README.md: problem readme
• brain-repl-ctf-problem/brain-repl: challenge binary
• brain-repl-ctf-problem/brain-repl.c: challenge source code
• brain-repl-ctf-problem/flag.txt: sample flag file (the name is public)
• brain-repl-ctf-problem/run_brain_repl.sh: script to run the binary
• debug_brain_repl.sh: debug script to run binary with socat with or without GDB
• gdb_cmds.gdb: GDB command file (used by debug_brain_repl.sh)
• solve_brain_repl.py: solution script