Well, it's fairly simple. You just need some 3 gigabyte software, a cool recorder and some skillz.
You should be on the most popular operating system, so press the Windows download button for the regular DaVinci ReSolve on the left.
It will ask you to fill in a bunch of shit, but you can just insert random data there.
Name doesn't really matter, so don't even waste time on it.
Useless step, but you gotta be here anyway so please be here.
Before doing the next step, add any footage you want by dragging it on the timeline (see a tutorial online how to do it if you don't understand what I mean)
Press Shift+F9 to open the configuration, and then change the color science preset (also I recommend to change the project framerate before adding any clips into the timeline).
Just by doing this step, your imported HDR recordings will be colorful and not grey like before.
before
after
These settings have been tweaked by me, maybe you can change them to make them much better..
Lazy to write something here... so just do it like on the image.
Name it how you want, but I would not care much since the program will add a bunch of useful info to the file name.
Apply your preset by right clicking your clip in the constructor, and selecting your preset in the LUT sub-menu.
Your footage has proper colors now, only thing left is actually rendering the footage.
You can view my video that compares the before and after result of doing this LUT thing
I won't explain how, just go to the render tab and it will be obvious :)