Scapy - Creating a TCP Christmas Tree Packet

xmas-packet

#!/usr/bin/python3
import sys
import warnings
from cryptography.utils import CryptographyDeprecationWarning
warnings.filterwarnings("ignore", category=CryptographyDeprecationWarning)
from scapy.all import IP,TCP,send
from random import randint

'''
X-mas Tree Packet Sender

A simply cli tool to send a set amount of x-mas tree packets to a specified
IP address. Useful for testing how a remote host will react to such odd
packets.

NOTE: For research purposes only. User is solely responsible for consequences
of using this script.

Forked from: https://gist.github.com/thepacketgeek/6919352
'''

def send_packets(dst_ip, packet_count):
    # Create the skeleton of our packet
    template = IP(dst=dst_ip)/TCP()
    # Start lighting up those bits!
    template[TCP].flags = "UFP"
    # Create a list with a large number of packets to send
    # Each packet will have a random TCP dest port for attack obfuscation
    xmas = []
    for pktNum in range(0,int(packet_count)):
        xmas.extend(template)
        xmas[pktNum][TCP].dport = randint(1,65535)
    # Send the list of packets
    try:
        send(xmas)
    except PermissionError:
        print("Cannot access interface as current user. Please try running as root.")
    except Exception as e:
        print("Encountered unexpected error")
        print(e)

def print_help():
    print("usage: xmas-packet {ip} {packet count - optional}")
    exit(0)

if __name__ == "__main__":
    # Get the destination IP
    try:
        dst_ip = sys.argv[1]
    except IndexError:
        print_help()
    if dst_ip == "-h" or dst_ip == "--help":
        print_help()
    # Set up how many packets to send
    packet_count = 50
    try:
        packet_count = sys.argv[2]
    except IndexError:
        pass
    # Output our settings
    print("Destination ip:", dst_ip)
    print("Packets to send:", packet_count)
    # Send the packets
    send_packets(dst_ip, packet_count)