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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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class MetasploitModule < Msf::Post
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Multi Gather Ping Sweep',
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        'Description' => %q{ Performs IPv4 ping sweep using the OS included ping command.},
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        'License' => MSF_LICENSE,
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        'Author' => [ 'Carlos Perez <carlos_perez[at]darkoperator.com>'],
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        'Platform' => %w[bsd linux osx solaris win],
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        'SessionTypes' => [ 'meterpreter', 'shell' ]
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      )
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    )
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    register_options(
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      [
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        OptAddressRange.new('RHOSTS', [true, 'IP Range to perform ping sweep against.']),
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      ]
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    )
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  end
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  # Run Method for when run command is issued
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  def run
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    iprange = datastore['RHOSTS']
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    print_status("Performing ping sweep for IP range #{iprange}")
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    iplst = []
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    begin
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      ipadd = Rex::Socket::RangeWalker.new(iprange)
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      numip = ipadd.num_ips
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      while (iplst.length < numip)
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        ipa = ipadd.next_ip
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        if !ipa
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          break
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        end
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        iplst << ipa
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      end
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      case session.platform
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      when 'windows'
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        count = ' -n 1 '
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        cmd = 'ping'
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      when 'solaris'
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        cmd = '/usr/sbin/ping'
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      else
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        count = ' -n -c 1 -W 2 '
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        cmd = 'ping'
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      end
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      ip_found = []
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      while (!iplst.nil? && !iplst.empty?)
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        a = []
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        1.upto session.max_threads do
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          a << framework.threads.spawn("Module(#{refname})", false, iplst.shift) do |ip_add|
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            next if ip_add.nil?
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            if session.platform =~ /solaris/i
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              r = cmd_exec(cmd, "-n #{ip_add} 1")
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            else
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              r = cmd_exec(cmd, count + ip_add)
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            end
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            if r =~ /(TTL|Alive)/i
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              print_good "\t#{ip_add} host found"
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              ip_found << ip_add
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            else
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              vprint_status("\t#{ip_add} host not found")
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            end
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          end
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        end
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        a.map(&:join)
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      end
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    rescue Rex::TimeoutError, Rex::Post::Meterpreter::RequestError
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    rescue ::Exception => e
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      print_status("The following Error was encountered: #{e.class} #{e}")
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    end
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    ip_found.each do |ip|
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      report_host(host: ip)
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    end
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  end
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end
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