Howdy! 🤠#

I’m Thea “Teddy” Heinen (they/them or she/her)!

You can find me on GitHub or Mastodon, and I’m reachable by email at [email protected].

I CTF with idek and mostly do binary exploitation.

I like low-level computing in all forms — with a particular focus in security, performance, and program correctness.

In my free time I like to crochet, read, and play with my cat Winter :)

If you aren’t here for anything in particular I’d recommend the following

• this post describing 1-byte .data relative swaps to RCE
• this post using glibc GOT hijacking as a code-reuse attack with a shadow stack
• this post using angr to automatically find and trigger buffer overflows and a partial GOT write to build a leak primitive in a leakless binary