mp4.1.3

from scapy.all import *

import sys

def debug(s):
    print('#{0}'.format(s))
    sys.stdout.flush()

if __name__ == "__main__":
    conf.iface = sys.argv[1]
    ip_addr = sys.argv[2]

    my_ip = get_if_addr(sys.argv[1])

    found_ports = []

    for i in range(1, 1025):

         # SYN scan
        packet = IP(src=my_ip,dst=ip_addr) / TCP(dport=i, flags="S")
        # send packet out
        resp = sr1(packet, timeout=2, verbose=False)

        if str(type(resp)) != "<type 'NoneType'> " and resp.haslayer(TCP): # check if found a response and check if TCP
            if resp.getlayer(TCP).flags == 0x12:
                send_resp = sr(IP(dst=ip_addr) / TCP(dport=i, flags='AR'), timeout = 2, verbose=False)
                found_ports.append(i)
    for port in found_ports:
        print(f"{ip_addr},{port}")