Create Vulnerbility Scanner and auto exploter in python
Create Vulnerbility Scanner and auto exploter in python
Hey there,
That's quite an ambitious project! Let me break this down, but first an important note:
Legal & ethical heads-up: Building and using vulnerability scanners and auto‑exploiters without explicit permission from the system owner is illegal and unethical. This response is purely educational – only test on equipment you own or have explicit written consent to probe.
With that out of the way, let's talk tech. A "full" scanner + auto‑exploiter like Metasploit or Core Impact is thousands of hours of work. I can show you the basic building blocks and where to go from here.
- Vulnerability Scanner – identifies potential weaknesses (open ports, outdated services, misconfigurations).
- Auto‑Exploiter – attempts to use those weaknesses to gain access.
1. Simple scanner skeleton
We'll use Python's standard libraries + some popular third‑party modules.
Python:
import socket
import sys
import requests
from datetime import datetime
# --- Port scanner (lightweight) ---
def scan_port(target, port):
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(0.5)
result = sock.connect_ex((target, port))
sock.close()
return result == 0 # Open if 0
except:
return False
# --- Grab HTTP banner (basic service detection) ---
def get_http_banner(target, port=80):
try:
resp = requests.get(f"http://{target}:{port}", timeout=2)
server = resp.headers.get('Server', 'Unknown')
return server
except:
return None
# --- Quick SQLi check (educational only) ---
def check_sqli(target, param="id"):
payloads = ["'", "\"", " OR 1=1--", "' OR '1'='1"]
for p in payloads:
url = f"http://{target}/product?{param}={p}"
try:
r = requests.get(url, timeout=3)
if "error in your SQL syntax" in r.text.lower():
print(f"[!] Potential SQLi found with: {p}")
except:
pass
# Main orchestration
if __name__ == "__main__":
target_host = "127.0.0.1" # YOUR test machine!
target_ports =
print(f"Scanning started at {datetime.now()}\n")
for port in target_ports:
if scan_port(target_host, port):
print(f"[+] Port {port} is open")
if port == 80 or port == 8080:
banner = get_http_banner(target_host, port)
if banner:
print(f" Server banner: {banner}")
# Quick SQLi probe (change the endpoint/param for your setup)
check_sqli(target_host)
What this does:
- Simple TCP connect() scan on a few ports.
- Retrieves the HTTP Server header (which later can be matched against vulnerability databases).
- A very naive SQLi check – real scanners do far more sophisticated error pattern matching.
2. Turning it into a real vulnerability scanner
You'd need to integrate CVE databases (NVD, exploit‑db) and match service versions. This is what tools like
nmap (with its NSE scripts) or
OpenVAS do. For Python, there's
python-nmap to drive Nmap scans and parse the XML output.
Example with python‑nmap:
Python:
import nmap
nm = nmap.PortScanner()
nm.scan('127.0.0.1', '1-1024', arguments='-sV')
for host in nm.all_hosts():
for proto in nm[host].all_protocols():
ports = nm[host][proto].keys()
for port in ports:
service = nm[host][proto][port]['name']
product = nm[host][proto][port]['product']
version = nm[host][proto][port]['version']
if product and version:
print(f"Port {port}: {product} {version}")
# Match against CVE list...
3. Auto‑exploitation
Here's where it gets incredibly complex. To automatically exploit a vulnerability you need:
- A reliable exploit for the exact product/version (often requires metasploit‑like modules or custom RCE scripts).
- A payload delivery mechanism (reverse shells, etc.).
- Robust error handling – a failed exploit can crash the target, which is usually a no‑no.
A
responsible approach is to use existing frameworks. For Python, you can talk to Metasploit's
msgrpc interface or use
pymetasploit3 to automate exploitation programmatically. But again, only on authorized systems.
4. Suggested learning path
- OWASP – study the Top 10 web vulnerabilities and how to test for them manually.
- Books: "Violent Python", "Black Hat Python" (for low‑level ideas), "The Web Application Hacker's Handbook".
- Libraries:
socket, requests, paramiko (for SSH), scapy (packet crafting), impacket (Windows protocols).
- Legal practice: Use platforms like HackTheBox, TryHackMe, or your own virtual lab with VulnHub VMs.
Bottom line: you won't write the next Metasploit overnight, but the journey teaches you a ton about networking, protocols, and secure coding. Keep it ethical, always have permission, and have fun learning!
If you have a more specific sub‑problem (e.g., "how to detect a specific CVE version"), feel free to ask.