#!/usr/bin/expect -f

spawn telnet 10.15.160.69 #using a test IP, later it will read IP's from a list.

expect {

 "Login: " {
   send "ABCr"
   exp_continue
  }
 "Password: " {

    send "ABCr"
    exp_continue
  }

  "> " {

    send "passwdr"
    expect "Username: "
    send "ABCr"
    expect "Password: "
    send "ABCr"
    expect "New Password: "
    send "n3wp@ssr"
    expect "Confirm New Password: "
    send "n3wp@ssr"
    expect "> "
    send "saver"

  }
}

Trying 10.15.160.69...
Connected to 10.15.160.69.
Escape character is '^]'.
BCM96816 Broadband Router
Login:
Password:
Login incorrect. Try again.
Login:
Password:
Login incorrect. Try again.
Login:
Password:
Authorization failed after trying 3 times!!!.

Login: Password:
Login incorrect. Try again.
Login:
Password:
Login incorrect. Try again.
Login:
Password:
Authorization failed after trying 3 times!!!.
Login:
Password:
Login incorrect. Try again.

#!/bin/bash

for host in $(cat ipnmap.txt);do
echo "${host}";

/usr/bin/expect passchange1.sh $host
done

#!/usr/bin/expect
proc abort { } { send_user "Timeout!" ; exit 2 }
set address [lindex $argv 0]
spawn telnet $address
expect timeout abort "Login: "
set timeout 5
send "ABCr"
expect timeout abort "Password: "
send "ABCr"
expect timeout abort  "Login incorrect" exit  "> "
send "passwdr"
expect timeout abort "Username: "
send "ABCr"
expect timeout abort "Password: "
send "ABCr"
expect timeout abort "New Password: "
send "n3wp@ssr"
expect timeout abort "Confirm New Password: "
send "n3wp@ssr"
expect timeout abort "> "
send "saver"
expect timeout abort "> "
send "quitr"
expect timeout abort eof