Saturday, March 22, 2014

When you don't have 0days. Client-side exploitation for the masses

Yesterday me and @antisnatchor gave a talk at Insomni'hack entitled "When you don't have 0days. Client-side exploitation for the masses". We described different tricks that one can use during a pentesting assignment to achieve goals without burning any of those precious 0days.

The tricks included the new Chrome extension exploitation tools ported recently to BeEF (by yours truly and @antisnatchor), HTA (HTML applications), Office macros, abusing UI expectations in IE, and some tricks with Java applets running on older Java. Mosquito was also demonstrated. Without further ado, here are the slides:

When you don't have 0days: client-side exploitation for the masses from Michele Orru

All the video links for the demos are on the slides, the code is public and landed in BeEF in tools/ subdirectory. The gist of the Chrome extensions part: you can now clone an arbitrary Chrome extension, add any code to it, and publish it back as your extension by doing:

$ cd beef/tools/chrome_extension_exploitation/
$ injector/ <original-ext-id> zip evil.js “evil-permissions”
$ ruby webstore_uploader/webstore_upload.rb publish



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Jorge A. Gonzalez said...

Just spotted this extension in the Chrome store after reading your article: Doesn't appear to snoop or log.

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