基于Python socket的端口扫描程序实例代码


            本文研究的主要是Python的端口扫描程序，具体实例代码如下。

先来看看第一个端口扫描程序代码，获取本机的IP和端口号:





import socket 

 

def get_my_ip(): 

 try: 

  csock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 

  csock.connect(('8.8.8.8', 80)) 

  (addr, port) = csock.getsockname() 

  csock.close() 

  return addr,port 

 except socket.error: 

  return "127.0.0.1" 

 

def int_to_ip(int_ip): 

 return socket.inet_ntoa(struct.pack('I', socket.htonl(int_ip))) 

 

 

def ip_to_int(ip): 

 return socket.ntohl(struct.unpack("I", socket.inet_aton(str(ip)))[0]) 

 

(ip,port)=get_my_ip() 

print "ip=%s port=%d" %(ip,port) 



PortScan.py





#!/usr/bin/python 

# -*- coding: utf-8 -*- 

 

import optparse 

from socket import * 

from threading import * 

 

screenLock = Semaphore(value=1) 

 

def connScan(tgtHost, tgtPort): 

 try: 

  connSkt = socket(AF_INET, SOCK_STREAM) 

  connSkt.connect((tgtHost, tgtPort)) 

  connSkt.send('ViolentPython\r\n') 

  results = connSkt.recv(100) 

  screenLock.acquire() 

  print '[+] %d/tcp open' % tgtPort 

  print '[+] ' + str(results) 

 except: 

  screenLock.acquire() 

  print '[-] %d/tcp closed' % tgtPort 

 finally: 

 screenLock.release() 

 connSkt.close() 

 

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: 

  t = Thread(target=connScan,args=(tgtHost,int(tgtPort))) 

  t.start() 

 

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] separated by comma') 

 

 (options, args) = parser.parse_args() 

 

 tgtHost = options.tgtHost 

 tgtPorts = str(options.tgtPort).split(',') 

 

 if (tgtHost == None) | (tgtPorts[0] == None): 

 print parser.usage 

  exit(0) 

 

 portScan(tgtHost, tgtPorts) 

 

 

if __name__ == '__main__': 

 main() 



基于Python socket的端口扫描程序





#------------------------------------------------------------------------------- 

# Name:  PortScan 

# Purpose:  扫描网段主机的端口开放情况 

# Author:  Hao Chen 

# Python3.4 

#------------------------------------------------------------------------------- 

import socket 

def main(): 

 ip_start=input('请输入开始IP：(默认:127.0.0.1)') 

 if ip_start=='': 

  ip_start='127.0.0.1' 

  ip_end='127.0.0.1' 

 else: 

  ip_end=input('请输入结束IP：') 

  if ip_end=='': 

   ip_end='127.0.0.1' 

   

 s=input('请输入目标主机开始端口：(默认扫描常用端口)') 

 if s=='': 

  portList=[21, 22, 23, 25, 80, 135, 137, 139, 445, 1433, 1502, 3306, 3389, 8080, 9015] 

 else: 

  startport=int(s) 

  s=input('请输入目标主机结束端口：(默认:65535)') 

  if s=='': 

   endport=65535 

  else: 

   endport=int(s) 

  portList=[i for i in range(startport,endport+1)] 

  

 while 1: 

  #ip_start<ip_end 

  x1=ip_start.rfind('.');      

  x2=ip_end.rfind('.') 

  if int(ip_start[x1+1:])>int(ip_end[x2+1:]): 

   break; 

   

  #开始扫描端口 

  for port in portList: 

   print('正在扫描%s ：%d' %(ip_start,port)) 

   try: 

    sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 

    sk.settimeout(10) 

    sk.connect((ip_start,port)) 

    sk.settimeout(None) 

    print('Server %s port %d OK!' % (ip_start,port)) 

    sk.close() 

 

    #结果保存在文件中 

    f=open("IP_Port.txt",'a') 

    f.write(ip_start+' : '+str(port)+'\n') 

    f.close()     

   except Exception: 

    print('Server %s port %d is not connected!' % (ip_start,port)) 

    

  #更新ip_start 

  i=ip_start.rfind('.') 

  x=int(ip_start[i+1:])+1 

  ip_start=ip_start[:i+1]+str(x) 

   

 print('扫描完成，结果保存在IP_Port.txt文件中') 

 

if __name__ == '__main__': 

 main() 



总结

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