Which tool uses rainbow tables to crack Windows login passwords?

Which tool uses rainbow tables to crack Windows login passwords?

• A. Hashcat
• B. Ophcrack
• C. John the Ripper
• D. Cain and Abel

Answer: (B)

Rainbow tables are precomputed mappings of hashes to plaintext passwords, allowing quick reversal of hash values without trying every possible password. Windows login credentials are stored as hashes (NTLM/LM), so cracking involves reversing those hashes offline. Ophcrack is built to crack Windows passwords by loading rainbow tables and using them to map the captured NTLM/LM hashes back to the original passwords. This makes it especially fast for common Windows passwords compared to brute-force or dictionary methods. The other tools are versatile crackers that rely on dictionaries, rules, or brute force rather than precomputed tables, so they aren’t based on rainbow-table attacks.

Rainbow tables are precomputed mappings of hashes to plaintext passwords, allowing quick reversal of hash values without trying every possible password. Windows login credentials are stored as hashes (NTLM/LM), so cracking involves reversing those hashes offline. Ophcrack is built to crack Windows passwords by loading rainbow tables and using them to map the captured NTLM/LM hashes back to the original passwords. This makes it especially fast for common Windows passwords compared to brute-force or dictionary methods. The other tools are versatile crackers that rely on dictionaries, rules, or brute force rather than precomputed tables, so they aren’t based on rainbow-table attacks.