Join Marc Menninger for an in-depth discussion in this video Password cracking tool demo, part of Performing a Technical Security Audit and Assessment.
- [Instructor] In this demo, I'll show how to…crack passwords with John the Ripper,…which is installed on Kali Linux.…John the Ripper is a powerful and versatile…password cracker as you'll see.…John the Ripper comes with a list of common passwords,…which is located at usr/share/john.…Let's take a quick look at the list.…I'm at usr/share/john, and I'll open the password list.…Looking at the list, we see it has 3,546 passwords.…Because these are common passwords, they're considered weak,…since they're the most frequently guessed…by automated programs like John the Ripper.…
We can add words to this list, but we'll keep it…as it is for now.…To see John the Ripper in action, I'll start by…creating a user with a simple password…that I know is in the list.…I'll call this user testuser1.…I'll give this user a password which I know is in the list.…For the remaining fields, I'll just accept the defaults.…I'll run the unshadow command, which combines the usernames…and password hashes on the system into one file…that we can run John the Ripper on.…
- Cite the three phases of external security assessments.
- Explain the reasons for conducting a log review.
- Explain what network sniffing is and why it’s used.
- Describe when to use a file integrity checking tool.
- Differentiate between active network discovery and passive network discovery.
- Explain how to scan for vulnerabilities.
- Relate the three techniques useful for validating target vulnerabilities.
- Explain the four-stage methodology of conducting penetration tests.
Skill Level Intermediate
1. Overview of Technical Security Assessments
2. Technical Security Assessment Reviews
3. Identify and Analyze Targets
4. Validate Target Vulnerabilities
5. Planning Technical Security Assessments
6. Executing the Technical Security Assessment
7. Post-Testing Activities
Report the results2m 16s
Next steps1m 32s
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