Detect & Protect from PHP Backdoor Shells

 
PHP Vulnerability Hunter is an advanced automated whitebox fuzz testing tool.  
  This is the application that detected almost all of the web application vulnerabilities listed on the advisories page. PHP Vulnerability Hunter is an advanced automated whitebox fuzz testing tool capable of triggering a wide range of exploitable faults in PHP web applications. Minimal configuration is necessary to begin a scan; PHP Vulnerability Hunter doesn’t even need a user specified starting URI. 
    
ChangeLog: 
Added code coverage report
Updated GUI validation
Several instrumentation fixes
Fixed lingering connection issue
Fixed GUI and report viewer crashes related to working directory

Download: http://code.google.com

More: http://www.autosectools.com/PHP-Vulnerability-Scanner