포트 스캐너

포트 스캐너

개발 언어	Python
버 전	v0.1
기 타	nmap 사용이 더 용이함

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 cmma')     (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()