This is my created CTF, and you are welcome to play
I am uploading here the source code of login.php, just in case if you find a bug please let me now it by opening an issue, BTW I was too lazy to care about SQL injection in IP field, so if you find it possible to do SQL injection please let me know.
and finally the encrypted link for the CTF is NjM2ODYxNkM2QzY1NkU2NzY1MzAzMDMwMkU3MjY2MkU2NzY0, your first challange is to decrypt it.
Enjoy!