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The VxDCall backdoor

GriYo
29a [3]
January 1999

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Abstract

After I read this fragment in Matt Pietrek's book 'Windows95 System Programming Secrets' I thought that VxD's might contain exported services, as DLL's do. I knew that VxD's exported services to other VxD's but did they export services to Win32?. If that was the case these services could be very useful for virus programming, because they are similar to API's but is running at ring-0.

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