It'd literally run orders of magnitude faster than the pitiful little thing that comes with Macbook Pros these days, but depending on how long the crack takes it might cost you $10-$100. If this were really important to you, you can create an EC2 spot instance running a Tesla CUDA card, then execute a CUDA-based brute force program on the server. your computer could literally be sitting there until the heat death of the universe. If you don't have a CUDA GPU, then up that estimate to a matter of days. If its an easy to guess, dictionary-based password, and you have a CUDA-capable Nvidia GPU, then a brute force could take a matter of hours. If you prefer to open a password protected RAR file without using any software, please read through this section and you will learn 4 free methods to achieve it. In essence, tell your computer to try every possible password that it could be really really fast. The only way to get the password would be to brute force it. Apart from saving download time, RAR files are also protected with a password or encryption so that the author may control who uses them. This is for your own safety: If it were recoverable, then what's the point of the password in the first place?

Doing such would be tantamount to breaking the AES encryption protocol, which is currently impossible. You cannot 'recover' the password to an encrypted RAR file.

Mac open rar with password