Recovering my forums password and username

[austinelse]

I have a forum that has not been used for quite some time. Recently my email has been blacklisted multiple times. When I went to find out why I found out that this forum I have had been hacked and the person was sending 100s of spam emails to users. Now, I am able to get into my cpanel, thankfully. Once in the users information section I found that all of the passwords have been changed to long very random numbers. I found the admin users but when I changed the Admin's password to a new one it still will not allow me to log into my forum.
After looking this problem up online I found many answers but none that would help me because of the following:
I can not register as a new user (It says it's forbidden)
I do not see the do_not_upload directory i have been told about to get the tools.php (which I also do not see anywhere)
when I try to recover my password through my forum it either will not recognize the email I enter, or the random question can not be answered.