Learning Outline

• 1. For..Of Iteration — `for 2 of ($a*) : ( $ at 0x100 )`
• 2. Offset Conditions — `at` for exact positions, `in` for ranges
• 3. Entropy Analysis — `math.entropy(0, filesize) > 6.5` for packed/encrypted content
• 4. File Structure Validation — Combining PE/ELF module data with string matches
• 5. Behavioral Correlation — String + API + entropy + size patterns
• 6. Context-Aware Rules — Using `filesize`, `filename`, `extension`
• 7. Negative Logic — `not` conditions, whitelisting
• 8. Nested Conditions — Complex boolean hierarchies
• 9. Rule Performance Scoring — Cheap checks first, expensive later

🔗 Resources

• 📖 Conditions Documentation
• 📐 Math Module Reference
• 🎓 Advanced YARA Conditions (Video)