ret2libc

glibc is the happiest place on Earth. It has it all. So how do we use it?

Here are a bunch of things I want to say in no particular order:

• The mechanics of linking (GOT/PLT)
• Using a leak to find the base of glibc (and pwntools updating)
• Onegadgets
• https://libc.blukat.me/ (better yet: https://libc.rip/)
• patchelf for using a glibc that matches the server's
• Calling the PLT when your only leak is near main.

Alright we're going to do baby_boi the 3rd problem in the challenge set, and we'll talk about these as we need to.

If you're here for some reference material take a look at my detailed notes from previous semesters:

• Intro to PLT/GOT
• An extra paragraph of pwn insight on GOT abuse