## How ROT13 Works ![](https://hackmd.io/_uploads/SkVyAw3jn.png) (image from https://zh.wikipedia.org/zh-tw/ROT13) ## Online Decoder https://rot13.com/ ## Writeup ### Mod 26 ![](https://hackmd.io/_uploads/HyQQCv3s2.png) ### 13 ![](https://hackmd.io/_uploads/rJ5V6y0o3.png)