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Certified Ethical Hacker (CEH) Practice Question

During a post-exploitation phase you exfiltrate /etc/shadow, whose hashes all begin with \(6\) (salted SHA-512). An initial Hashcat dictionary attack recovers no passwords, but HR states that every password is eight characters, starts with an uppercase letter, and ends with a digit. Which Hashcat attack mode will most efficiently exploit this information to shorten cracking time?

  • Repeat the straight dictionary attack with a larger wordlist

  • Run a mask attack with the pattern ?u?l?l?l?l?l?l?d

  • Generate rainbow tables for salted SHA-512 and look up the hashes

  • Use a combinator attack to join two smaller wordlists

Certified Ethical Hacker (CEH)
System Hacking Phases and Attack Techniques
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