Alexandru Geană 👾
The personal blog of @abgeana.
Notes from reading the return-to-csu paper and applying the technique in a CTF pwnable.
BambooFox CTF 2021
Write-ups of some reverse engineering tasks from BambooFox CTF 2021.
Rust Foreign Function Interface
Experiments with using the rust Foreign Function Interface to link against compiled binaries.
Bootstrapping esp8266 development
Wrote some code for the esp8266 and put together my notes on how to get the toolchain up and running.
Cross-compiling for Android
Notes on configuring build systems to compile code for Android.
CTF has given you some binary in a weird architecture? This is how to use gdb.
setuid, res user IDs, exec and ptrace
Ran some experiments with the ptrace syscall when executed against process started from setuid binaries.
Solved a pwnable with a string format vulnerability. Made some notes on how exploits for this vulnerability class work.
gdb tracee io hacks
Tried to debug an ncurses application in gdb. These are some things I learned.