Historical Background

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We became interested in rootkits because of our professional work in computer security, but the pursuit of the subject quickly expanded into a personal mission (also known as late nights and weekends). This led Hoglund to found rootkit.com, a forum devoted to reverse engineering and rootkit development. Both of us are deeply involved with rootkit.com. Butler first contacted Hoglund online through this Web site because Butler had a new and powerful rootkit called FU that needed testing,[1] Butler sent Hoglund some source code and a pre-compiled binary. However, by accident, he did not send Hoglund the source code to the kernel driver. To Butler's amazement, Hoglund just loaded the pre-compiled rootkit onto his workstation without question, and reported back that FU seemed to be working fine! Our trust in one another has only grown since then.[2]

[1] Butler was not interested in rootkits for malicious purposes. He was instead fascinated with the power of kernel modifications. This led Butler to develop one of the first rootkit-detection programs, VICE.

[2] Hoglund still wonders, from time to time, whether that original version of FU is still running on his workstation.

Both of us have long been driven by an almost perverse need to reverse-engineer the Windows kernel. It's like when someone says we can't do something then we accomplish it. It is very satisfying learning how so-called computer security products work and finding ways around them. This inevitably leads to better protection mechanisms.

The fact that a product claims to provide some level of protection does not necessarily mean it actually does. By playing the part of an attacker, we are always at an advantage. As the attacker we must think of only one thing that a defender didn't consider. Defenders, on the other hand, must think of every possible thing an attacker might do. The numbers work in the attacker's favor.

We teamed up a few years ago to offer the training class "Offensive Aspects of Rootkit Technology." This training started as a single day of material that since has grown to include hundreds of pages of notes and example code. The material for the class eventually became the foundation for this book. We now offer the rootkit training class several times a year at the Black Hat security conference, and also privately.

After training for awhile, we decided to deepen our relationship, and we now work together at HBGary, Inc. At HBGary, we tackle very complex rootkit problems on a daily basis. In this book, we use our experience to cover the threats that face Windows users today, and likely will only increase in the future.

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    Rootkits(c) Subverting the Windows Kernel
    Rootkits: Subverting the Windows Kernel
    ISBN: 0321294319
    EAN: 2147483647
    Year: 2006
    Pages: 111

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