Crucial Exams

Certified Ethical Hacker (CEH) Practice Question

You have pulled the following entry from a compromised Linux host's /etc/shadow file:

user:$6$sa9l8H2G$

You will attack it with John the Ripper on a workstation that has an OpenCL-capable GPU. Your goal is to use a large wordlist and have John automatically apply mangling rules while off-loading the work to the GPU. Which command accomplishes this most efficiently?

  • john --format=sha512crypt-opencl --wordlist=/usr/share/wordlists/rockyou.txt --rules hash.txt

  • john --format=sha512crypt --single --nolog hash.txt

  • john --format=raw-sha512 --incremental --fork=4 hash.txt

  • john --format=sha256crypt-opencl --wordlist=/usr/share/wordlists/rockyou.txt --rules hash.txt

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