Back to admin page the next thing that struck me is to crack the password and the username to get access as a root. I tried all the possible combinations but couldn’t get the one.
Then I just checked page source of admin page and again couldn’t get anything.
I just looked at the url which was written as ?page=admin.auth.inc
. I did something extremely silly by removing auth from the url and rewrite it as ?page=admin.inc
and I was redirected to a new page.