Security Basics mailing list archives
Detecting Mutating Javascript
From: TSS <tss () activeattack com>
Date: Wed, 18 Nov 2009 06:24:02 -0600
Hi, I'm looking for people working on detecting mutating Javascript. I've been working on detecting Javascript encoded in whitespace and have come up with a few ideas so far: * Signature detection on the decoder function (lame) * Analyzing the whitespace to try to find encoded information (decent, but difficult because there could be so many encoding schemes) * Building character frequency maps from non-malicious Javascript libraries and detecting anomalies in the number of whitespace characters compared to the average. I'm basically just looking to benchmark the stuff I've done so far against the work of other people. Any tips you could give me would be appreciated. :) Oh also, I'm wondering if anyone knows of Javascript worms that have made use of this technique. I'd like to run my detector against actual code found in the wild, but I'm not sure where to find it. TSS ------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
Current thread:
- Detecting Mutating Javascript TSS (Nov 18)