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Death of an ftp client / Birth of Metasploit modules

Over the past few weeks, Corelan Team has given its undivided attention to fuzzing ftp client applications.

Using a custom built ftp client fuzzer, now part of the Metasploit framework, the team has audited several ftp clients and applications that use an embedded client ftp component. One example of such an application is a tool that would synchronize / backup data from a computer to a remote ftp server.

The 3 main audit/attack vectors that were used during the “project” were

send back overly long responses to ftp commands / requests sent by the ftp client to the server
send back a file/directory listing that contains overly long file/folder names
try to download a file that has an overly long filename.
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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 […]

Free tool : Windows 2003/2008 Certificate Authority Certificate List Utility for pending requests and about-to-expire certificates

In one of my earlier posts, I have talked about setting up a Windows 2008 based Certificate Authority/PKI. Once your Windows 2008 CA setup is in place and configured, you can go ahead and starting issuing certificates. But at the same time, you need to put a maintenance/management procedure in place so you can stay […]

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