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Showing posts from April, 2008

Welcome to Mark Baggett - In Depth Defense

I am the course Author of SANS SEC573 Automating Information Security with Python. Check back frequently for updated tools and articles related to course material.

Shoveling windows shell over printer ports!?

Intrigued by the recent discussion of shoveling shells with native commands in linux, I wondered how you might do that in windows. However, I've found the lack of a /dev/tcp equivalent device makes IO redirection to the network a bit difficult to overcome. No answer yet, but here is an approach that may work. Good old COMMAND.COM might hold the answer. Lets take a look at the options.
C:\WINDOWS> /? Starts a new instance of the MS-DOS command interpreter.
COMMAND [[drive:]path] [device] [/E:nnnnn] [/P] [/C string] [/MSG]
[drive:]path Specifies the directory containing COMMAND.COM file. device Specifies the device to use for command input and output. /E:nnnnn Sets the initial environment size to nnnnn bytes. /P Makes the new command interpreter permanent (can't exit). /C string Carries out the command specified by string, and then stops. /MSG Specifies that all error messages be stored in memory. You …


Blocking Personal Blackberrys storing corporate emails
One of the many reason to have a BES (Blackberry Enterprise Server) to protect your corporate email is so you can wipe any blackberry device in the event that it is lost.    These devices often contain sensitive email so password protection, encryption, policy enforcement and remote wipe is well worth the investment in BES.      BES installed, problem solved!   Right?    Check the IIS logs on your Outlook Web Access server.  You may find unauthorized Blackberry and other smart phones are synchronizing email using WEBDAV.    Using OWA they can store corporate emails and you have no way to wipe the data when the devices lost.   This DOES NOT require RPC over HTTP be enabled on your OWA server and its not just blackberrys and smart phones.   Desktop clients such as Entourage can also use WEBDAV to sync email to a home computer.  No firewall, No antivirus and all those sensitive email on their home machines.   Scared yet?   If this is …