Malicious pdf analysis : from price.zip to flashplayer.exe
This morning, my generic attachment filter for MS Exchange reported that about 100 emails were put in quarantine because they contained a small zip file.
When looking inside the zip file, I found a small pdf file… I immediately figured this file was up to no good, so it was time to get my hands dirty :)
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Exploiting Ken Ward Zipper : Taking advantage of payload conversion
In the article I wrote on the abysssec.com website, I explained the steps and techniques needed to build a working exploit for Ken Ward’s zipper. One of the main difficulties I had to overcome when building the exploit, was the character set limitation. I basically could only use a subset of the ascii characters (only […]
QuickZip Stack BOF 0day: a box of chocolates
Over the last couple of weeks, ever since I published 2 articles on the Offensive Blog, I have received many requests from people asking me if they could get a copy of those articles in pdf format. My blog does not include a pdf generator, but it has a “print” button, so you can get […]
Ken Ward Zipper exploit write-up on abysssec.com
Hi all, I just wanted to drop a few lines to let you know that, earlier today, my exploit write-up article about this vulnerability was published on www.abysssec.com. You can find the article here : http://www.abysssec.com/blog/2010/03/ken-ward-zipper-stack-bof-0day-a-not-so-typical-seh-exploit/ Enjoy !
Exchange 2007/2010 : Renaming attachments ‘on the fly’ – custom transport agent
It may sound a bit extraordinary, but I needed to have the ability to change attachment filenames while they were being processed by the transport service on Exchange. I can’t really tell you why I needed this functionality, but I guess there could be many reasons to do so. (e.g. zip files should be renamed […]
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