نوشته شده توسط
n.nowroozi
sudo python test.py
خب شیوه اجراتون غلطه چون برای فایل پایتونتون
شبنگ نگذاشتید لینوکس اون رو به عنوان فایل bash داره اجرا میکنه و این باعث میشه که ارور بده.
'''Packet sniffer in python using the pcapy python library
Project website
http://oss.coresecurity.com/projects/pcapy.html
'''
import socket
from struct import *
import datetime
import pcapy
import sys
def main(argv):
#list all devices
devices = pcapy.findalldevs()
print devices
#ask user to enter device name to sniff
print "Available devices are :"
for d in devices :
print d
dev = raw_input("Enter device name to sniff : ")
print "Sniffing device " + dev
'''
open device
# Arguments here are:
# device
# snaplen (maximum number of bytes to capture _per_packet_)
# promiscious mode (1 for true)
# timeout (in milliseconds)
'''
cap = pcapy.open_live(dev , 65536 , 1 , 0)
#start sniffing packets
while(1) :
(header, packet) = cap.next()
#print ('%s: captured %d bytes, truncated to %d bytes' %(datetime.datetime.now(), header.getlen(), header.getcaplen()))
parse_packet(packet)
#Convert a string of 6 characters of ethernet address into a dash separated hex string
def eth_addr (a) :
b = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" % (ord(a[0]) , ord(a[1]) , ord(a[2]), ord(a[3]), ord(a[4]) , ord(a[5]))
return b
#function to parse a packet
def parse_packet(packet) :
#parse ethernet header
eth_length = 14
eth_header = packet[:eth_length]
eth = unpack('!6s6sH' , eth_header)
eth_protocol = socket.ntohs(eth[2])
print 'Destination MAC : ' + eth_addr(packet[0:6]) + ' Source MAC : ' + eth_addr(packet[6:12]) + ' Protocol : ' + str(eth_protocol)
#Parse IP packets, IP Protocol number = 8
if eth_protocol == 8 :
#Parse IP header
#take first 20 characters for the ip header
ip_header = packet[eth_length:20+eth_length]
#now unpack them :)
iph = unpack('!BBHHHBBH4s4s' , ip_header)
version_ihl = iph[0]
version = version_ihl >> 4
ihl = version_ihl & 0xF
iph_length = ihl * 4
ttl = iph[5]
protocol = iph[6]
s_addr = socket.inet_ntoa(iph[8]);
d_addr = socket.inet_ntoa(iph[9]);
print 'Version : ' + str(version) + ' IP Header Length : ' + str(ihl) + ' TTL : ' + str(ttl) + ' Protocol : ' + str(protocol) + ' Source Address : ' + str(s_addr) + ' Destination Address : ' + str(d_addr)
#TCP protocol
if protocol == 6 :
t = iph_length + eth_length
tcp_header = packet[t:t+20]
#now unpack them :)
tcph = unpack('!HHLLBBHHH' , tcp_header)
source_port = tcph[0]
dest_port = tcph[1]
sequence = tcph[2]
acknowledgement = tcph[3]
doff_reserved = tcph[4]
tcph_length = doff_reserved >> 4
print 'Source Port : ' + str(source_port) + ' Dest Port : ' + str(dest_port) + ' Sequence Number : ' + str(sequence) + ' Acknowledgement : ' + str(acknowledgement) + ' TCP header length : ' + str(tcph_length)
h_size = eth_length + iph_length + tcph_length * 4
data_size = len(packet) - h_size
#get data from the packet
data = packet[h_size:]
print 'Data : ' + data
#ICMP Packets
elif protocol == 1 :
u = iph_length + eth_length
icmph_length = 4
icmp_header = packet[u:u+4]
#now unpack them :)
icmph = unpack('!BBH' , icmp_header)
icmp_type = icmph[0]
code = icmph[1]
checksum = icmph[2]
print 'Type : ' + str(icmp_type) + ' Code : ' + str(code) + ' Checksum : ' + str(checksum)
h_size = eth_length + iph_length + icmph_length
data_size = len(packet) - h_size
#get data from the packet
data = packet[h_size:]
print 'Data : ' + data
#UDP packets
elif protocol == 17 :
u = iph_length + eth_length
udph_length = 8
udp_header = packet[u:u+8]
#now unpack them :)
udph = unpack('!HHHH' , udp_header)
source_port = udph[0]
dest_port = udph[1]
length = udph[2]
checksum = udph[3]
print 'Source Port : ' + str(source_port) + ' Dest Port : ' + str(dest_port) + ' Length : ' + str(length) + ' Checksum : ' + str(checksum)
h_size = eth_length + iph_length + udph_length
data_size = len(packet) - h_size
#get data from the packet
data = packet[h_size:]
print 'Data : ' + data
#some other IP packet like IGMP
else :
print 'Protocol other than TCP/UDP/ICMP'
print
if __name__ == "__main__":
main(sys.argv)
کد HTML:
Traceback (most recent call last): File "/home/faeze/Desktop/pc.py", line 154, in <module> main(sys.argv) File "/home/faeze/Desktop/pc.py", line 29, in main cap = pcapy.open_live(dev , 65536 , 1 , 0)PcapError: any: You don't have permission to capture on that device (socket: Operation not permitted)>>>
با این روش هم اجرا کردم ولی بهم حق دسترسی نمیده. شما این برنامه رو اجرا می کنید،اوکی هست؟
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