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:
importsocket
defget_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()
returnaddr,port
exceptsocket.error:
return"127.0.0.1"
defint_to_ip(int_ip):
returnsocket.inet_ntoa(struct.pack('I',socket.htonl(int_ip)))
defip_to_int(ip):
returnsocket.ntohl(struct.unpack("I",socket.inet_aton(str(ip)))[0])
(ip,port)=get_my_ip()
print"ip=%sport=%d"%(ip,port)
PortScan.py
#!/usr/bin/python
#-*-coding:utf-8-*-
importoptparse
fromsocketimport*
fromthreadingimport*
screenLock=Semaphore(value=1)
defconnScan(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/tcpopen'%tgtPort
print'[+]'+str(results)
except:
screenLock.acquire()
print'[-]%d/tcpclosed'%tgtPort
finally:
screenLock.release()
connSkt.close()
defportScan(tgtHost,tgtPorts):
try:
tgtIP=gethostbyname(tgtHost)
except:
print"[-]Cannotresolve'%s':Unknownhost"%tgtHost
return
try:
tgtName=gethostbyaddr(tgtIP)
print'\n[+]ScanResultsfor:'+tgtName[0]
except:
print'\n[+]ScanResultsfor:'+tgtIP
setdefaulttimeout(1)
fortgtPortintgtPorts:
t=Thread(target=connScan,args=(tgtHost,int(tgtPort)))
t.start()
defmain():
parser=optparse.OptionParser('usage%prog'+\
'-H-p')
parser.add_option('-H',dest='tgtHost',type='string',\
help='specifytargethost')
parser.add_option('-p',dest='tgtPort',type='string',\
help='specifytargetport[s]separatedbycomma')
(options,args)=parser.parse_args()
tgtHost=options.tgtHost
tgtPorts=str(options.tgtPort).split(',')
if(tgtHost==None)|(tgtPorts[0]==None):
printparser.usage
exit(0)
portScan(tgtHost,tgtPorts)
if__name__=='__main__':
main()
基于Pythonsocket的端口扫描程序
#-------------------------------------------------------------------------------
#Name:PortScan
#Purpose:扫描网段主机的端口开放情况
#Author:HaoChen
#Python3.4
#-------------------------------------------------------------------------------
importsocket
defmain():
ip_start=input('请输入开始IP：(默认:127.0.0.1)')
ifip_start=='':
ip_start='127.0.0.1'
ip_end='127.0.0.1'
else:
ip_end=input('请输入结束IP：')
ifip_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)')
ifs=='':
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)')
ifs=='':
endport=65535
else:
endport=int(s)
portList=[iforiinrange(startport,endport+1)]
while1:
#ip_startint(ip_end[x2+1:]):
break;
#开始扫描端口
forportinportList:
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%sport%dOK!'%(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()
exceptException:
print('Server%sport%disnotconnected!'%(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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