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module Msf
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  class Plugin::AutoAddRoute < Msf::Plugin
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    include Msf::SessionEvent
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    def name
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      'auto_add_route'
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    end
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    def desc
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      'Adds routes for any new subnets whenever a session opens'
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    end
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    def on_session_open(session)
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      return if session.type != 'meterpreter'
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      session.load_stdapi
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      sb = Rex::Socket::SwitchBoard.instance
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      session.net.config.each_route do |route|
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        # Remove multicast and loopback interfaces
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        next if route.subnet =~ /^(224\.|127\.)/
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        next if route.subnet == '0.0.0.0'
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        next if route.netmask == '255.255.255.255'
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        if !sb.route_exists?(route.subnet, route.netmask)
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          print_status("AutoAddRoute: Routing new subnet #{route.subnet}/#{route.netmask} through session #{session.sid}")
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          sb.add_route(route.subnet, route.netmask, session)
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        end
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      end
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    end
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    def initialize(framework, opts)
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      super
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      self.framework.events.add_session_subscriber(self)
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    end
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    def cleanup
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      framework.events.remove_session_subscriber(self)
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    end
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  end
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end
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