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PentestGeek Was At Derbycon 3.0 “All in The Family”

Ok so I know it isn’t exactly breaking news that DerbyCon 3.0 was awesome. Still I wanted to take a moment to reach out to any of our readers living under a rock and let them know that last September, the PentestGeek.com crew had an opportunity to represent at one of the coolest Information Security events of the year, the DerbyCon!

We released smbexec version 2.0 a few days ago and it comes with some rather large differences from previous versions. For one thing it was completely rewritten in Ruby, for another it now supports multi-threading.

Scheduled tasks with S4U and on demand persistence

Github module [1, 2]

I came across an interesting article by scriptjunkie (which you should really read) about running code on a machine at any time using service-for-user. By changing one line in the export XML of a scheduled task you effectively get a scheduled task that can run whether or not a user is logged in, whether or not the system reboots, whether or not you have the user’s password, run as a limited user, and doesn’t require bypassing UAC! This isn’t an interactive logon but can still be very useful in certain situations.

This works with any user with logon as batch job. While scriptjunkies blog post only showed altering a basic task scheduled to run every hour, it is possible to create more complex triggers based off a variety of things to make a more flexible trigger for your payload. Some of the triggers can even be used to replicate functionality for non-privileged accounts that are usually restricted. Some can even be used to trigger a scheduled task remotely from only your IP address.

Hard coded encryption keys and more WordPress fun

Metasploit modules [1, 2]

A few days ago I was chatting with pasv about a recent vulnerability he discovered. Apparently there was demand for Razer Synapse which syncs the configuration for a Razer mouse to the “cloud”. Syncing configurations to the cloud was most likely needed since some of Razer models have so many buttons the mouse has its own full blown number pad on the side. Pasv got bored and did what any good bored security professional does and reverse engineered the Razer Synapse installer. He discovered that the encryption key and IV were hard coded for the “Remember my password” feature (PoC).

The vulnerability was recently fixed before the new year (12/27/12), via an auto-update in the Razer Synapse software but we figure there are probably at least a few configuration files still sitting out there. This vulnerability was very similar to a recent metasploit module @zeknox and I released about Spark IM so it was fairly painless to write up a new module to exploit this configuration.