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SWF Intruder Overview
SWFIntruder (pronounced Swiff Intruder) is the first tool specifically developed for analyzing and testing security of Flash applications at runtime. It helps to find flaws in Flash applications using the methodology originally described by Stefano Di Paola in Testing Flash Applications (May 2007) and in Finding Vulnerabilities in Flash Applications (Nov 2007).
SWFIntruder was developed by using only open source software. Thanks to its generality, SWFIntruder is OS independant.
SWFIntruder purpose is to analyze a Flash application for version =< 8 and to help check in a semi automated fashion the presence of security issues like Cross Site Scripting and Cross Site Flashing.
Moreover does help raise awareness around the subject of flash applications security and how that can be used to and assist in the security of applications.
Tested on win32 and a few linux flavors. Current version is 0.9. Get it from Google code.
Permanent Preferences, Help Topics, ActionScript Object Explorer, Automated Xss testing fully customizable.
You can download the latest version of SWFIntruder from Google code.
1. Firefox 2.x [Needed] 2. FireBug Addon [Suggested] 3. Flash Player Plugin Ver >= 9 [Needed] 4. Any Web Server [Needed] 5. Any OS [Needed :> ]
Quick and Dirty Tutorial
- Download SWFIntruder latest version from Google Code.
- Uncompress it and save it somewhere in your webserver root directory.
- Browse to http://YourHost/swfintruderDir/.
- Use test.swf (a simple flawed swf movie) by filling the "Flash Movie Form" with http://YourHost/swfintruderDir/testSwf/test.swf or download a swf from some host and save it to an accessible path from your web server (http://YourHost/swfDirectory/external.swf).
- Fill the "Flash Movie" form with full URL pointing to the movie (http://YourHost/swfDirectory/test.swf) and click "Load".
- Wait 1 second for the test movie to be loaded.
- Enjoy browsing the objects.
- Test undefined variables by selecting some of them in the "Undefined Variables" and click 'start' on the Xss window.
- Wait for the test to be finished.
- If some XSS was found, it will be listed in the Xss area click on it to get the result on a new browser window.
Features and Screenshots
- Basic predefined attack patterns.
- Highly customizable attacks.
- Highly customizable undefined variables.
- Semi automated Xss check.
- User configurable internal parameters.
- Log Window for debugging and tracking.
- History of latest 5 tested SWF files.
- ActionScript Objects runtime explorer in tree view.
- Persistent Configuration and Layout.
The Flash Security project is run by Stefano Di Paola. He can be contacted at stefano.dipaola AT mindedsecurity.com.
SWFintruder distributions are currently maintained on [Google code].
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