Rootkits are the ultimate backdoor, giving hackers ongoing and virtually undetectable access to the systems they exploit. Now, two of the world's leading experts have written the first comprehensive guide to rootkits: what they are, how they work, how to build them, and how to detect them. Rootkit.com's Greg Hoglund and James Butler created and teach Black Hat's legendary course in rootkits. In this book, they reveal never-before-told offensive aspects of rootkit technology--learn how attackers can get in and stay in for years, without detection.

Hoglund and Butler show exactly how to subvert the Windows XP and Windows 2000 kernels, teaching concepts that are easily applied to virtually any modern operating system, from Windows Server 2003 to Linux and UNIX. They teach rootkit programming techniques that can be used for a wide range of software, from white hat security tools to operating system drivers and debuggers.

After reading this book, readers will be able to

• Understand the role of rootkits in remote command/control and software eavesdropping
• Build kernel rootkits that can make processes, files, and directories invisible
• Master key rootkit programming techniques, including hooking, runtime patching, and directly manipulating kernel objects
• Work with layered drivers to implement keyboard sniffers and file filters
• Detect rootkits and build host-based intrusion prevention software that resists rootkit attacks