May 31, 2021

ictf - A little birdie once told me... (pwn)

 brute force canary; fork()

May 27, 2021

dctf - Formats Last theorem (pwn)

 Full RELRO FSB, malloc/free_hook

May 24, 2021

dctf - Hotel ROP (pwn)

 PIE binary, Return 2 LIBC

May 20, 2021

3kCTF - Masterc (pwn)

 Stack Canary, Master Canary