
Basically, FSU is bunch of tools written in PHP-CLI. Using build-in functions, you are able to grab url's using search engines - and so, dork for interesting files and full path disclosures. Using list of url's, scanner will look for Cross Site Scripting, Remote File Inclusion, SQL Injection and Local File Inclusion vulnerabilities. It is able to perform mass bruteforce attacks for specific range of hosts, or bruteforce ssh with specific username...