OAUTH 2.0/OpenID WEBSITE CREATION TO DESKTOP APPLICATION

I hope that you are well same here. I have a website, actually a few of them, but for now let us first do one. The website is already built and running and has resources on it that to access you need username and password (paid which I have). The website employs he oAuth2.0/OpenID protocol for authentication and authorization to access the resources. I need that website created into a desktop application (.exe) with auto login, solving/bypassing the authentication/authorization(OpenID/OAuth2.0) process, enabled on the desktop application to access the resources. That is all. If we do this one correctly will provide more with same features/protocol. Thank you and looking forward to hearing from you.