def UDP_layer(attributes):
layer4 = UDP()
layer4.sport = attributes['sport']
layer4.dport = attributes['dport']
layer4.len = attributes['len']
return layer4
def makePacket(dstip, ethaddr, rthdr):
# MAC address of router interface on senderSend private network.
# Don't know why Scapy can't figure this out on its own.
eth = Ether(dst=ethaddr)
iphdr = IPv6()
iphdr.dst = dstip
# this is necessary for srh
iphdr.src = C.senderSendIp
# Routing Header = 43, UDP = 17
iphdr.nh = 17 if rthdr == "" else 43
udphdr = UDP()
udphdr.sport = 11111
udphdr.dport = 3000
payload = "$"
return eth / iphdr / rthdr / udphdr / payload
if status:
print str(packet.dport) + " is open\n"
# UDP
elif sys.argv[1] == "-u":
print "UDP scan on host " + sys.argv[2] + "\n"
ip = IP()
udp = UDP()
# cast as str and int to avoid issues caused by periods
ip.dst = str(sys.argv[2])
# loop iterates through as many commandline arguments were given
for port in range(len(sys.argv) - 3):
print "Scanning port " + str(sys.argv[port + 3])
# port+3 is start of ports
udp.dport = int(sys.argv[port + 3])
packet = (ip / udp)
# verbose=0 to limit console output; timeout 1s
status = sr1(packet, verbose=0, timeout=1)
if status:
print str(packet.dport) + " is open\n"
# ICMP
elif sys.argv[1] == "-i":
print "PING scan on host " + sys.argv[2] + "\n"
ip = IP()
ping = ICMP()
# cast as str and int to avoid issues caused by periods
ip.dst = str(sys.argv[2])
packet = (ip / ping)
'''
Sample script to send a DHCP discover
'''
import scapy
from scapy.sendrecv import sendp, sniff
from scapy.all import DHCP, ARP, BOOTP, Ether, UDP, TCP, IP
# data link layer
ethernet = Ether()
ethernet.dst = 'ff:ff:ff:ff:ff:ff'
# network layer
ip = IP()
ip.dst = '255.255.255.255'
# transport layer
udp = UDP()
udp.sport = 68
udp.dport = 67
# application layer
bootp = BOOTP()
bootp.flags = 1
dhcp = DHCP()
dhcp.options = [("message-type", "discover"), "end"]
packet = ethernet / ip / udp / bootp / dhcp
ans = srp1(packet)
from scapy.all import DHCP, ARP, BOOTP, Ether, UDP, TCP, IP
# data link layer
ethernet = Ether()
ethernet.show()
ethernet.dst = "ff:ff:ff:ff:ff:ff"
# network layer
ip = IP()
ip.show()
ip.dst = "255.255.255.255"
# transport layer
udp = UDP()
udp.show()
udp.sport = 68
udp.dport = 67
# application layer
bootp = BOOTP()
bootp.show()
bootp.flags = 1
dhcp = DHCP()
dhcp.show()
dhcp.options = [("message-type", "discover"), "end"]
packet = ethernet / ip / udp / bootp / dhcp
sendp(packet)
