Frozen/SBBOD on session Startup

Hi pals. I was trying to install a program and the installer wanted to run kind of an (malicious?) script. I've chosen not to run it, but the installer did it anyway and now I cannot acces to my MBP 😟 I have the MBP divided into 2 sessions, so, when I turn on the MBP, after selecting my session and writting the log-in password, the MBP freezes when I hit return, in order to log-in; then, the MBP freezes 😐😟 Not good.

I've tried resseting the RAM, Safe Boot and Disck Utility. First 2 didn't work, and third option says everything is okay.

Any help will be appreciated.

Thanks,

Ø3 🙂