Course 33 - Static Analysis for Reverse Engineering | Episode 3: Graphical Reverse Engineering with x64dbg

Transcribed

Course 33 - Static Analysis for Reverse Engineering | Episode 3: Graphical Reverse Engineering with x64dbg

May 15, 2026 · 19m 11s

Description

In this lesson, you’ll learn about: graphical static analysis and Control Flow Graphs (CFGs)Review AnswerWhen analyzing a Control Flow Graph (CFG) in x64dbg with the xAnalyzer plugin:🔹 What Green and...

Green arrows
- Represent the successful condition (TRUE branch)
- The path taken when a comparison or condition is met
Red arrows
- Represent the failed condition (FALSE branch)
- The path taken when the condition is not met

🔹 How They Help in Reverse EngineeringAfter a comparison instruction (like CMP):

The program evaluates a condition (e.g., JE, JNE, JG, etc.)
The CFG visually splits into:
- ✅ Green path → correct condition
- ❌ Red path → incorrect condition

🔹 Practical Use (Cracking / Analysis)These arrows allow you to:

Quickly identify:
- Which branch leads to:
  - “Access Granted”
  - “Access Denied”
Focus on:
- The green path to understand:
  - What makes the input valid
Or manipulate:
- The execution flow (e.g., forcing a jump)

🔹 Simple ExampleAfter a serial key check:

If key is correct:
- → Program follows green arrow
- → Shows success message
If key is wrong:
- → Program follows red arrow
- → Shows error message

🎯 Key InsightCFG colors turn complex assembly into a visual decision map:

Green = “This condition passed”
Red = “This condition failed”

👉 This makes it much easier to:

Track logic
Identify validation points
Reverse engineer faster and smarter

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Author	CyberCode Academy
Organization	CyberCode Academy
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