Recover Lost Linux Password Using Yescrypt Hash Cracking (Kali & Shadow File Guide)

In Linux systems, user passwords are not stored in plain text. Instead, they are stored as cryptographic hashes inside the /etc/shadow file. Modern distributions use yescrypt ( $y$ ) , a memory-hard password hashing algorithm designed to resist brute-force and GPU-based attacks. Since hashing is a one-way function, passwords cannot be decrypted. Recovery is done through hash cracking , where candidate passwords are hashed and compared against the stored value. Tools such as John the Ripper Jumbo