TRY TO TEST FOR DEFAULT ACCOUNT VIA TELNET

import telnetlib

infile = open("list.txt", "r")
ips = []
delay_second = 2

account_tup = (("admin", "admin"),
               ("admin", "password"),
               ("root", "root"),
               ("root", "password"),
               ("root", ""),
               ("guest", ""),
               ("db2admin", "db2admin")
               ("db2inst1", "db2inst1")
               ("db2as", "db2as")
               ("db2fenc1", "db2fenc1")
               ("db2admin", "ibmdb2")
               ("db2inst1", "ibmdb2")
               ("db2as", "ibmdb2")
               ("db2fenc1", "ibmdb2")
              )

lines = infile.readlines()
for line in lines:
    ips.append(line)
infile.close()
total_count = (lines.__len__()) * (len(account_tup))
now_count = 1


def tryConnectTelnet(host, user, password):
    global now_count
    with telnetlib.Telnet(host) as con:
        con.read_until("Login:", delay_second)
        con.read_until(b"login:", delay_second)
        print("[Try Action] input account completed")
        con.write(user + b"\n")
        con.read_until("Password:", delay_second)
        print("[Try Action] input password completed")
        con.write(password + b"\n")
        now_count = now_count + 1
        if con.eof:
            return "Closed connection"
        # con.write(b"ls\n")
        # con.write(b"exit\n")
        # my_text = con.set_debuglevel(1000)
        return con.read_until(b".", delay_second)


def print_result(return_str):
    tag = b"[[[Return Result]]]"
    if len(return_str) <= 5:
        print((tag + b"enmpty").decode())
    else:
        print(len(return_str))
        print((tag + return_str).decode())


for ip in ips:
    host = ip.strip("\n")
    print("==========[" + ip + "]==========")
    for a_value in account_tup:
        print(r"====[" + str(now_count) + "/" + str(total_count) + " try to " + a_value[0] + "/" + a_value[1])
        return_value = tryConnectTelnet(host, a_value[0].encode(), a_value[1].encode())
        print_result(return_value)
        with open("output.txt", "a") as outfile:
            outfile.write(host + ":" + a_value[0] + ":" + a_value[1] + ":" +return_value.decode() + "\n")