I need a utility to find RAR files that contain duplicate data (i.e. files within the RAR that hash the same, but could have different names).

I can open the RARs and see the CRCs are the same, but I was hoping for a more automated process that would work in bulk (hundreds of files).

Hashing the overall RAR won't help because the file contained within could have different names, or the archive could be compressed at different levels.

If needed, a utility that would extract the contents of the RARs and then compare would work, but is not preferred.

I would prefer a free utility for Windows, but a pay utility or a utility for Linux would be acceptable.