8 writeups

picoCTF - Binary Exploitation

picoCTF pwn challenges with full exploitation walkthroughs.

picoCTF Echo Escape 1 writeup leveraging format string bugs in an echo service to read sensitive memory and extract the flag.

picoCTF Echo Escape 2 writeup using format string vulnerabilities to leak and overwrite memory for shell access.

picoCTF Heap Havoc writeup exploiting heap memory management flaws including use-after-free or heap overflow to gain code execution.

picoCTF Offset Cycle writeup solving a binary exploitation challenge involving cyclic offset calculation and return address control.

picoCTF Offset Cycle V2 writeup building on the first version with additional protections requiring more advanced exploitation techniques.

picoCTF Pizza Router writeup exploiting a routing application through buffer overflow or command injection to capture the flag.

picoCTF Quizploit writeup exploiting a quiz application through buffer overflow to redirect execution and capture the flag.

picoCTF Tea-Cash writeup exploiting a virtual currency application through integer overflow or logic flaws to gain unauthorized funds.