#web
I forgot to save screenshots for this and the challange site is now offline: https://encoded-deception.aws.jerseyctf.com/
View the page source and look at the source code for the JavaScript file
The first part is encoded as base64 in a variable named secretMessage or something like that.
Look at the console output for the response from a .php file, the second part is also encoded as base64
Use an online tool to decode both parts.