Python Threading - An Intro from my learning

This is my first attempt at utilizing threading within a python script.  I've kept it simple so that others can use it as an example while they tackle the process of learning some of these more advanced concepts of python.  Comments and feedback are appreciated.

The first step involves importing the "treading" module.  Next, you'll need to use threading.Thread(target=<your code/function call>).  The last step will be to begin your threads with the start() method.  First get your code running without using threading, then modifying it to be used with threading.  Hope this helps someone.

#!/usr/bin/python

# Import the necessary modules

import threading

import ftplib

# FTP function - Connects and performs directory listing

def ftpconnect(target):

        ftp = ftplib.FTP(target)

        ftp.login()

        print "File list from: %s" % target

        files = ftp.dir()

        print files

# Main function - Iterates through a lists of FTP sites creating theads

def main():

sites = ["ftp.openbsd.org","ftp.ucsb.edu","ubuntu.osuosl.org"]

for i in sites:

myThread = threading.Thread(target=ftpconnect(i))

myThread.start()

print "The thread's ID is : " + str(myThread.ident)

if (__name__ == "__main__"):

main()

Python Classes

As I struggled to better understand Python classes, I took a few notes from the research I did and created this example class. Hopefully this will provide some insight for those who are new to Python as well. Please post any questions or comments.

#Classes begin with the word 'class' followed by the class name
class identity:
 # Statements or functions follow, referred to as methods.
 # Method attributes always start with 'self'
 # 'self' is a temporary placeholder for the object
 # The value of the attribute 'first' is passed into the method
    def createFirst(self,first):
  # The object's value for 'first' will be assigned based on the input
        self.first = first
    def createLast(self,last):
        self.last=last
 # The objects assigned value of 'first' is returned
    def displayFirstname(self):
        return self.first
    def displayFullname(self):
        return self.first + " " + self.last
    def saying(self):
        print "Hello %s %s " % (self.first, self.last)

Once your class is created you can start to create objects that use the methods within the class.

# Associate object with class
user=identity()
# Use methods to assign values
user.createFirst('Bill')
user.createLast('Jones')
# Retrieve properties of an object
user.displayFullname()
'Bill Jones'
# Create another object that uses all the same methods of the class
user2=identity()
# If you ever forget what methods are available:
dir(user)

Python & Scapy - Simple port scanner

I have been learning more about python and taking some courses with the Pentester Academy.  One of the projects is to create a simple port scanner using scapy.  The next iteration will incorporate threading.  Hopefully you find this interesting and see the value of Python and Scapy!  Comments, suggestions, observations encouraged. Enjoy!

#!/usr/bin/python

# Import necessary modules
import logging
logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
from scapy.all import *
import itertools
import thread

# Parse and create IP range
def ip_range(input_string):
    octets = input_string.split('.')
    chunks = [map(int, octet.split('-')) for octet in octets]
    ranges = [range(c[0], c[1] + 1) if len(c) == 2 else c for c in chunks]
    for address in itertools.product(*ranges):
        yield '.'.join(map(str, address))

# Scan each IP address with the identified port number
def scanner(ips):
    for i in ip_range(ips):
        src_port = RandShort()
        dst_port = port
        scan = sr1(IP(dst=i)/TCP(sport=src_port,dport=dst_port,flags="S"),timeout=10)
        if scan is None:
            print "This port is closed on IP: " + i
        elif(scan.haslayer(TCP)):
            if(scan.getlayer(TCP).flags==0x12):
                print "This port is open for IP: " + i
        else:
            print "Unknown state"

# Request port number from user
port = int(raw_input('Enter which port to scan --> '))

# Request IP range from user - form should follow this format '192.168.1.1-26'
ips = raw_input('Enter your range using this format x.x.x.x-x --> ')

scanner(ips)