Maybe you will find this article helpful. You may try the following expression

^.*(?=.{8,})(?=.*[\d])(?=.*[\W]).*$

Maybe you will find this article helpful. You may try the following expression

^.*(?=.{8,})(?=.*[\d])(?=.*[\W]).*$

and the breakdown:

• (?=.{8,}) - contains at least 8 characters
• (?=.*[\d]) - contains at least one digit
• (?=.*[\W]) - contains at least one special character