Tags: jailbreak rbash jail bash
Rating: 5.0
### JailBoss
###### Description: taskFword.sh is in the same directory as you. Maybe it will help you.
---
After I found that `.` `?` and `a` were the only three characters allowed and that `a` prints the environment variables, I ran the following command to execute taskFword.sh that the description says is in the same directory:-
```bash
. ????????????
```
Running this command seemed to do nothing helpful but running `a` after this gave us the flag as an environment variable:
**FwordCTF{BasH_1S_R3aLLy_4w3s0m3_K4hLaFTW}**
A more detailed writeup can be found at [our GitHub repository](https://github.com/FrigidSec/CTFWriteups/tree/master/FwordCTF/Bash/JailBoss)