Kali Linux Exploit Development — Write Your Own Exploits

Exploit Development with Kali Linux

Instead of using pre-made Metasploit exploits, learn to write your own. This is what separates script kiddies from real hackers.

The Exploit Dev Process

1. Fuzz: Send random data to find crashes
2. Analyze: Determine if the crash is exploitable
3. Develop: Write exploit code to control execution
4. Test: Verify reliability on multiple targets

Buffer Overflow Basics

# Vulnerable C program
#include <string.h>
void vulnerable(char *input) {
    char buffer[64];
    strcpy(buffer, input);  // No length check = OVERFLOW!
}

int main(int argc, char *argv[]) {
    vulnerable(argv[1]);
    return 0;
}

Fuzzing with Python

import socket
buffer = "A" * 100
while True:
    try:
        s = socket.socket()
        s.connect(("target", 9999))
        s.send(buffer.encode())
        buffer += "A" * 100  # Increase each time
    except:
        print(f"Crashed at {len(buffer)} bytes!")
        break

Tools for Exploit Dev

• GDB + PEDA: Debugger for analyzing crashes
• Immunity Debugger: Windows debugger
• ROPgadget: Find ROP chains
• msfvenom: Generate shellcode
• pwntools: Python exploit development library

Career Impact

Exploit developers earn ₹30-80 LPA in India. Zero-day exploits sell for $100K-$2.5M on the market.

🔥 Start exploit development at ONLY4YOU →