If you look into the auth file you can find something that looks like a flag:
```sqlite> select * from user_privileges;2|VBGEDOL{34WX_Q33UZ_13T0R_5MY33UZ}1|basic_privs1|interact1|worldedit1|shout```
Looks like some kind of substitution cipher which doesn't follow any simple rule.
The first word in the flag looks like `34SY` (commonly found in CTF flags) so it can be assumed that digits are presented as-is.
With some trials and errors we can guess the final flag:
`DARKCTF{34SY_P33ZY_13M0N_5QU33ZY}`
(Or maybe it was `DARKCTF{34ZY_P33ZY_13M0N_5QU33ZY}`, I didn't really remember :P)
Update: The flag is `DARKCTF{34ZY_P33ZY_13M0N_5QU33ZY}` and the cipher used is Playfair.You can see how digits messed up the whole cryptosystem :P