Python Penetration Testing Cookbook

How to do it...

We can create a SYN scanner with the following steps:

1. Create a new file called syn-scanner.py and open it in your editor.
2. As usual, import the required modules:

from scapy.all import * 

This will import the scapy module

3. Now we can declare the variables, and we can also pass these variables as arguments, if required:

host = 'www.dvwa.co.uk' 
ip = socket.gethostbyname(host) 
openp = [] 
filterdp = [] 
common_ports = { 21, 22, 23, 25, 53, 69, 80, 88, 109, 110,  
                123, 137, 138, 139, 143, 156, 161, 389,       443, 445, 500, 546, 547, 587, 660, 995,       993, 2086, 2087, 2082, 2083, 3306, 8443,       10000 } 

4. Now we can create a function to check whether the host is up or down:

def is_up(ip): icmp = IP(dst=ip)/ICMP() resp = sr1(icmp, timeout=10) ...