portscan3.py

#! /usr/bin/env python

import optparse
import socket
from socket import *
def connScan(tgtHost, tgtPort):
    try:
        connSkt = socket(AF_INET, SOCK_STREAM)
        connSkt.connect((tgtHost, tgtPort))
        connSkt.send('ViolentPython\r\n')
        results = connSkt.recv(100)
        print '[+]%d/tcp open'% tgtPort
        print '[+] ' + str(results)
        connSkt.close()
    except:
        print '[-]%d/tcp closed'% tgtPort
def portScan(tgtHost, tgtPorts):
    try:
        tgtIP = gethostbyname(tgtHost)
    except:
        print "[-] Cannot resolve '%s' : Unknown host" %tgtHost
        return
    try:
        tgtName = gethostbyaddr(tgtIP)
        print '\n[+] Scan Results for: ' + tgtName[0]
    except:
        print '\n[+] Scan Results for: ' + tgtIP
    setdefaulttimeout(1)
    for tgtPort in tgtPorts:
        print 'Scanning port ' + tgtPort
        connScan(tgtHost, int(tgtPort))
def main():
    parser = optparse.OptionParser("usage%prog "+\
        "-H ,target host> -p <target port>")
    parser.add_option('-H', dest='tgtHost', type='string', \
        help='specify target host')
    parser.add_option('-p', dest='tgtPort', type='string', \
        help='specify target port[s] seperated by comma')
    (options, args) = parser.parse_args()
    tgtHost = options.tgtHost
    tgtPorts = str(options.tgtPort).split(', ')
    if (tgtHost == None) | (tgtPorts[0] == None):
        print '[-] You must specify a target host and port[s].'
        exit(0)
    portScan(tgtHost, tgtPorts)
if __name__ == '__main__':
    main()