Prajakta Jagdale at ShmooCon: Blinded by Flash - Widespread Security Risks Flash Developers Don't See

ShmooCon begins today in DC, and as usual, they have lined up an informative and topical schedule of security talks. The HP Web Security Research Group's own Prajakta Jagdale is scheduled to speak on Saturday at 2pm about the security of applications developed using the Adobe Flash Platform. Prajakta and the group have completed an in-depth research project where they studied numerous applications built on the Adobe Flash Platform and found that many of the security issues that are common in Web applications also exist in applications developed with Adobe Flash. Here is an overview of Prajakta's ShmooCon talk and a little bit about her background: In a rush to adopt the dazzling Flash technology, website developers tend to use quick and dirty hacks to get their applications to work and in the process sidestep any security features provided by the technology. The presentation will look at applications built on the Adobe Flash Platform encountered in the wild that are a result of insecure development practices and demonstrate the ease with which they can be compromised. Prajakta Jagdale is a Research Engineer with the HP Web Security Research Group. Her current research efforts are concentrated towards identifying security risks associated with RIA technologies. This research involves developing innovative techniques to enable automated web assessment tools to crawl and analyze RIA applications through the use of both static source code analysis and dynamic runtime analysis.


More information about her presentation can be found here:



Tags: SWFScan
| ‎12-29-2009 08:23 PM

I am trying to implement "__bytecode" as you had demonstrated in your presentation for the "HP Web Security Research Group" titled "Blinded by Flash: Widespread Security Risks Flash Developers Don’t See", however I cannot see the Flash screen in the video because it appears to be to blurry for me to see. I am not sure what needs to be done to include the binary code to cause a decompiler to result in an infinite loop.

Do you have an example FLA or another resource I can examine that shows how this is done?

pjagdale | ‎01-08-2010 10:06 PM


You can use the following code to embed the bytecode directly into the flash code:


A great explanation of this problem was provided a while back by Eric Lin at

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