module

Microsoft SQL Server Payload Execution

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Disclosed
05/30/2000
Created
05/30/2018

Description

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.

Authors

David Kennedy "ReL1K" jduck

Platform

Windows

Architectures

x86, x64

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:

    msf > use exploit/windows/mssql/mssql_payload
    msf /(d) > show actions
        ...actions...
    msf /(d) > set ACTION < action-name >
    msf /(d) > show options
        ...show and set options...
    msf /(d) > run
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