You can't really get scripts that do that for you, it's too much of a job for a script to handle. You will have to look into different vulnerabilities, then you have to look into encryption and decryption to break password hashes IF the target uses any, and if the site has admin Panel, you will have to find a vulnerability to upload a shell through that. It is a long process thats why you cant get a script to do it, maybe a program could...