hi guys i started to study python…
i was studyng “how to build a simple network sniffer” but i have a lot of problem:
i created 2 script(really easy),but in both of these i have everythime an error.
plis help me.
first code:
import socket
import os
import struct
from ctypes import *
host = “192.168.1.37”
class IP(Structure):
fields = [
(“ihl”, c_ubyte, 4),
(“version”, c_ubyte, 4),
(“tos”, c_ubyte),
(“len”, c_ushort),
(“id”, c_ushort),
(“offset”, c_ushort),
(“ttl”, c_ubyte),
(“protocol_num”, c_ubyte),
(“sum”, c_ushort),
(“src”, c_ulong),
(“dst”, c_ulong),
]
def new(self, socket_buffer=None):
return self.from_buffer_copy(socket_buffer)
def init(self, socket_buffer=None):
self.protocol_map = {1:"ICMP", 6:"TCP", 17:"UDP"}
self.src_address = socket.inet_ntoa(
struct.pack("<L",self.src))
self.dst_address = socket.inet_ntoa(
struct.pack("<L",self.dst))
if os.name == “nt”:
socket_protocol = socket.IPPROTO_IP
else:
socket_protocol = socket.IPPROTO_ICMP
sniffer = socket.socket(
socket.AF_INET,
socket.SOCK_RAW,
socket_protocol)
sniffer.bind((host, 0))
sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
if os.name == “nt”:
sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON)
try:
while true:
raw_buffer = sniffer.recvfrom(65565)[0]
ip_header = IP(raw_buffer[0:20])
print ("Protocol: %s %s -> %s") % (ip_header.protocol, \
ip_header.src_adress, ip_header.dst_adress)
except KeyboardInterrupt:
if os.name == “nt”:
sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_OFF)
when i execute on my android i have this error:
errno 99 invalid adress…(i changed the host adress a lot of times but nothing)
second code:(really easy with scapy)
from scapy.all import *
pkts = sniff(iface=“eth0”, count=10)
but when i try to execute this code i have this error:
unknow network interface “eth0”(or wlan0 ecc…)
hope you can help me
x