Hi I_Know_God,
The HTTPs binding for ADFS on Windows 2012 R2 bypasses your IIS instance altogether, so URL rewrite is not possible on the same box the way it was on Windows 2008 R2. Your options to perform URL re-writing are as follows:
1) Perform the rewriting client side using an ADFS theme with Javascript code that performs the re-write using a JavaScript based redirection.
2) Insert an additional Reverse Proxy that will do the re-write for you into the architecture, you could accomplish this using AAR if you want to stay within the Windows world, or any number of third party Reverse Proxy solutions.
Good luck!
Shane