Hint for HELP

Type your comment> @t4a1 said:

Did b**** si and got user and pass but I am unable to use them to gain further foothold, can anyone pm me for more information? I even tried to s1(password) to use for lower port

So I am able to login to admin area, however I have no clue how to further my foothold, am I going to use the same vul everyone is using? How did those that did using b**** s**i managed to get the user other than admin?