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Password AttacksOffline Cracking

John the Ripper

25 min
lab
+50 XP

Learning Objectives

  • Understand the fundamentals of john the ripper
  • Apply john the ripper techniques in real scenarios
  • Document findings and develop practical skills

John the Ripper

This lesson covers john the ripper, an important topic in the Offline Cracking module.

Understanding the Topic

Core principles forms the foundation of this topic. In real-world scenarios, attackers leverage this knowledge to identify weaknesses that defenders often overlook. Understanding how john the ripper works at a fundamental level is essential before attempting any practical exercises.

Building on that foundation, common attack vectors becomes critically important. Security professionals encounter this daily, and recognizing the patterns helps you work more efficiently during assessments.

Defense considerations represents another key consideration. Many beginners overlook this aspect, but experienced practitioners know it can make the difference between success and failure in real engagements.

Finally, industry best practices provides the practical context. Knowing when and how to apply these techniques separates theoretical knowledge from actionable skills.

Tools and Environment

For john the ripper, professionals rely on Various security tools available in the sandbox. The sandbox terminal on the right provides access to these tools. Familiarize yourself with their basic usage, then answer the questions below to complete this lesson.

Answer the Questions0 / 4 completed

📚 KnowledgeQuestion 1

How does John the Ripper work?

Format: ***(3 chars)
Exact match required
⌨️ Hands-OnQuestion 2

What tool combines passwd and shadow for John?

Format: ********(8 chars)
Exact match required
📚 KnowledgeQuestion 3

When use John vs Hashcat?

Format: ***********(11 chars)
Exact match required
⌨️ Hands-OnQuestion 4

What format string is used for NTLM in John?

Format: **(2 chars)
Exact match required
Answer all questions correctly to unlock the next lesson

Interactive Sandbox

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