OWASP Mutillidae II is a free, open source, deliberately vulnerable web-application providing a target for web-security enthusiest. Mutillidae can be installed on Linux and Windows using LAMP, WAMP, and XAMMP. It is pre-installed on SamuraiWTF, Rapid7 Metasploitable-2, and OWASP BWA. The existing version can be updated on these platforms. With dozens of vulns and hints to help the user; this is an easy-to-use web hacking environment designed for labs, security enthusiast, classrooms, CTF, and vulnerability assessment tool targets. Mutillidae has been used in graduate security courses, corporate web sec training courses, and as an "assess the assessor" target for vulnerability assessment software.

• Has over 35 vulnerablities and challenges. Contains at least one vulnearbility for each of the OWASP Top Ten 2007 and 2010
• Actually Vulnerable (User not asked to enter “magic” statement)
• Mutillidae can be installed on Linux, Windows XP, and Windows 7 using XAMMP making it easy for users who do not want to install or administrate their own webserver. Mutillidae is confirmed to work on XAMPP, WAMP, and LAMP. XAMPP is the "default" deployment.
• Installs easily by dropping project files into the "htdocs" folder of XAMPP.
• Will attempt to detect if the MySQL database is available for the user
• Preinstalled on Rapid7 Metasploitable 2, Samurai Web Testing Framework (WTF), and OWASP Broken Web Apps (BWA)
• Contains 2 levels of hints to help users get started
• Includes bubble-hints to help point out vulnerable locations
• Bubble-hints automatically give more information as hint level incremented
• System can be restored to default with single-click of "Setup" button
• User can switch between secure and insecure modes
• Secure and insecure source code for each page stored in the same PHP file for easy comparison
• Provides data capture page and stores captured data in database and file
• Allows SSL to be enforced in order to practice SSL stripping
• Used in graduate security courses, in corporate web sec training courses, and as an "assess the assessor" target for vulnerability software
• Mutillidae has been tested/attacked with Cenzic Hailstorm ARC, W3AF, SQLMAP, Samurai WTF, Backtrack, HP Web Inspect, Burp-Suite, NetSparker Community Edition, and other tools
• Instructional Videos: http://www.youtube.com/user/webpwnized
• Updates tweeted to @webpwnized
• Updated frequently
• Project Whitepaper: http://www.giac.org/paper/gwapt/3387/introduction-owasp-mutillidae-ii-web-pen-test-training-environment/126917