Rating:
We're given an iPhone app which implements a simple calculator, and the ability to send a URL to a real physical iPhone with the app installed.
**Full Writeup:** [https://github.com/pwning/public-writeup/blob/master/rwctf2019/pwn_dezhou](https://github.com/pwning/public-writeup/blob/master/rwctf2019/pwn_dezhou)
