But without more context, it's tricky. The user might be asking for a review of the files or features available in such an index. They could be an average user looking to understand what's in this index for legitimate use, or someone looking to bypass installation for a movie/game.
Another angle: "index of" is commonly used in torrent or file-sharing communities to list the contents of a directory. So "index of krrish portable" could be someone looking for a torrent page listing all the files in a Krrish Portable directory. But if that's the case, I should be cautious about copyright issues and not promote piracy. index of krrish portable
So the structure of the review should first clarify the ambiguity, explain possible interpretations, discuss legal and ethical considerations, and offer alternatives. Maybe also mention the importance of verifying sources and avoiding malware. But without more context, it's tricky