help in haystack - ROOT

I got “banana” user - I figured the exploit needed with the “stash” :stuck_out_tongue:
but i cant figure out the syntax for the exploit to work
anyone who wants to help me out and send me a clue or the syntax for that last bit on code i need to ROOT?
Open for PM

If u have read a certain configuration file you know what regular expression it needs for it to execute ?

Spoiler Removed

nvm i already rooted it
Thanks though :slight_smile: