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John the Ripper

John the Ripper

Overview

What is John the Ripper?

John the Ripper is a penetration testing tool used to find and crack weak passwords.

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What is John the Ripper?

John the Ripper is a penetration testing tool used to find and crack weak passwords.

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Product Details

What is John the Ripper?

John the Ripper Technical Details

Operating SystemsUnspecified
Mobile ApplicationNo
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Reviews and Ratings

(2)

Reviews

(1-1 of 1)

Excellent, Long-Established Password Cracker.

Rating: 9 out of 10
June 07, 2022
AC
Vetted Review
Verified User
John the Ripper
2 years of experience
We had to undertake a password auditor project recently, so one of the key performance indicators was to use a password cracker to check the veracity of the passwords. The best-known one was 'John the Ripper' so we went ahead and used it. Its main strength lies in detecting password hashes and running against the very best ones (apart from AES). The password crackers can be run from one location for convenience and this also adds to the effectiveness of the application. 'John the Ripper' mainly relies on incorporating brute force attacks and dictionary table attacks on plaintext passwords and this is where t is more effective.
  • Easily finds plantect passwords.
  • Simply detects passwords hashes.
  • Has a fully bespoke cracker that can be modified to users requirements.
  • Excellent for UNIX and Windows usage.
It is best suited in those environments where complexity is not the key. We've used it fairly extensively in our UNIX to find weak UNIX passwords and in Windows environments too. It's very easy to get hold of as it is essentially Open Source, although a paid version is now available and we are thinking of looking at this proposition in-depth to see if it is viable. We found it easy to install and deploy across our systems. Patching was fairly regular, so we always had the latest version. It holds its own against DES and Blowfish encryption algorithms among many others.
  • Easy of use.
  • Speed of operation.
  • Supports countless Hashes.
  • Runs on numerous Operating Systems.
  • Is Open source, so free effectively to use.
  • Excellent at auto detecting Hashes.
  • Continues to develop.
  • Helped us achieve initial Password Auditor goals and targets.
  • Simple and cheap to deploy, so have saved greatly compared to paid for products.
'John the Ripper' being open source was free to use, whereas the others had to be paid for. It was very simple to install and runs against many hundreds of hashes and crypts. It is always developing thanks to large communities on GitHub.
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