前言：接下来会写一系列Python在安全方面的小脚本，大家可以试着敲敲代码，可以用来提升自己学习的兴趣，学习有回馈才有动力。
目录：
0x01：处理流程
0x02：代码实现
0x03：逐行解析
0x01 处理流程
0x02 代码实现
# -*- coding: utf-8 -*-
'''
Program：端口扫描器
Function：利用socket库连接端口，进行IP的开放端口扫描
Version：Python3.6
Time：2017/10/13
Author：Walks
个人博客：http://www.bywalks.com
'''
from socket import *
import threading
#建立线程锁
lock = threading.RLock()
openNum = 0
threads = []
#端口扫描函数
def portScanner(host,port):
global openNum
try:
s = socket(AF_INET,SOCK_STREAM)
s.connect((host,port))
if lock.acquire():
openNum+=1
print('[+] %d open' % port)
lock.release()
s.close()
except:
pass
def main():
setdefaulttimeout(1)
#扫描1-1024端口
for p in range(1,1024):
t = threading.Thread(target=portScanner,args=('119.188.97.150',p))
threads.append(t)
t.start()
for t in threads:
t.join()
print('[*] The scan is complete!')
print('[*] A total of %d open port ' % (openNum))
if __name__ == '__main__':
main()
0x03：逐行解析
# -*- coding: utf-8 -*-
'''
Program：端口扫描器
Function：利用socket库连接端口，进行IP的开放端口扫描
Version：Python3.6
Time：2017/10/13
Author：Walks
个人博客：http://www.bywalks.com
'''
#导入socket和线程库
from socket import *
import threading
#建立线程锁，Rlock用来确保多线程多共享资源时，只有一个线程访问共享资源
lock = threading.RLock()
#开放端口数量计算，在这为共享资源
openNum = 0
#线程列表
threads = []
#端口扫描函数
def portScanner(host,port):
global openNum
try:
#定义socket对象
s = socket(AF_INET,SOCK_STREAM)
#连接IP和端口，当连接了才可以运行接下来的代码
s.connect((host,port))
#线程锁的利用
if lock.acquire():
openNum+=1
print('[+] %d open' % port)
lock.release()
#关闭IP：端口连接
s.close()
except:
pass
def main():
#设置脚本timeout，为socket库里面的
setdefaulttimeout(1)
#扫描1-1024端口，range(1,1024)就是1-1024
for p in range(1,1024):
#建立线程对象
t = threading.Thread(target=portScanner,args=('119.188.97.150',p))
#将对象添加到线程列表
threads.append(t)
#开始线程
t.start()
#join：如果一个线程在执行过程中要调用另外一个线程，要等到其完成后才可以运行
for t in threads:
t.join()
print('[*] The scan is complete!')
print('[*] A total of %d open port ' % (openNum))
if __name__ == '__main__':
main()
扫描成功图片
转载请注明来自：www.bywalks.com
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