This module executes an arbitrary payload on a Microsoft SQL Server by using
the "xp_cmdshell" stored procedure. Currently, three delivery methods are supported.
First, the original method uses Windows 'debug.com'. File size restrictions are
avoided by incorporating the debug bypass method presented by SecureStat at
Defcon 17. Since this method invokes ntvdm, it is not available on x64 systems.
A second method takes advantage of the Command Stager subsystem. This allows using
various techniques, such as using a TFTP server, to send the executable. By default
the Command Stager uses 'wcsript.exe' to generate the executable on the target.
Finally, ReL1K's latest method utilizes PowerShell to transmit and recreate the
payload on the target.
NOTE: This module will leave a payload executable on the target system when the
attack is finished.
- David Kennedy "ReL1K" <email@example.com>
- jduck <firstname.lastname@example.org>