```
[*] '/DEFCON_CTF_2019/speedrun009/speedrun-009'
Arch: amd64-64-little
RELRO: Full RELRO
Stack: Canary found
NX: NX enabled
PIE: PIE enabled
```

use fsb, leak libc address, canary, pie address

and trigger bof vuln to go to oneshot

[Full exploit](https://github.com/wotmd/CTF_Exploit/tree/master/DEFCON_CTF_2019/speedrun009)

Original writeup (https://github.com/wotmd/CTF_Exploit/tree/master/DEFCON_CTF_2019/speedrun009).