If you need to recover data from an iPhone backup, it is much safer to use reputable, official methods:

iPhone backups are complex. Unofficial or modified versions of the software can easily corrupt your backup files, making your data permanently unrecoverable.

Searching for "cracked" software or activation keys for (or any security tool) is highly risky. While the official software is a legitimate tool for recovering data, "cracked" versions are almost always used as vehicles for malware. The Risks of "Cracked" Backup Extractors