Tips, Tricks, and Tools from CTFs

CTFs are fun and sometimes I accidentally learn things from them. Here are some of those things.

(I mostly play RE/pwn, so of these notes will probably be about those two categories)

Pwning

• Generating Your own libc Leaks
• Easily Call Arbitrary Function Pointers with up to Three Arguments
• Heap Fun with TCache (In Progress)
• Abusing the STDIN Buffer (In Progress)

Reverse Engineering

• Using Angr to Solve Crackmes
• Using Z3 to Solve Difficult Constraints (In Progress)
• Replaying Program Execution with Timeless Debugging (In Progress)