Create README.md

Author: Priyabug

README.md

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+# 🧨 Return-to-libc Attack Lab
+
+> A deep dive into bypassing non-executable stack protections using Return-to-libc attacks.  
+> 🔐 Learn how attackers leverage system libraries instead of injecting shellcode.
+
+---
+
+## 📚 Overview
+
+The **Return-to-libc attack** is a powerful exploit technique used when direct shellcode execution is blocked by modern OS protections. Instead of injecting code, attackers redirect execution to existing library functions like `system()` to gain shell access.
+
+---
+
+## 🎯 Objective
+
+Gain hands-on experience with:
+- ✅ Buffer overflow vulnerabilities
+- ✅ Stack memory layout & calling conventions
+- ✅ Return-to-libc exploit construction
+- ✅ Linux-based mitigation techniques
+
+---
+
+## 🛠️ Lab Environment
+
+| Tool/Tech           | Version/Info             |
+|---------------------|--------------------------|
+| OS                  | Ubuntu 20.04 (32-bit preferred) |
+| Compiler            | `gcc` with `-fno-stack-protector -z execstack` |
+| Debugger            | `gdb` with `peda` plugin |
+| Tools               | `readelf`, `objdump`, `python` |
+
+---
+
+## 🧪 Topics Covered
+
+- 💥 Buffer Overflow Vulnerability
+- 🧵 Stack Layout & Function Frames
+- 🚫 Non-executable Stack Protections
+- 🔄 Return-to-libc Technique
+- 🧩 Basics of Return-Oriented Programming (ROP)
+
+---
+
+## 📁 Project Structure
+
+```bash
+return-to-libc-lab/
+├── vulnerable.c        # Program containing buffer overflow
+├── Makefile            # Compilation instructions
+├── exploit.py          # (Optional) Payload automation script
+└── README.md           # Project overview and guide