I know how to take meat away from a dog. How do I take a dog away from meat? This is not, unfortunately, a joke.
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Linux Kernel Hooker library (LKH) version 1.1 (the subject of an article in phrack #58) provides a general purpose hooking interface with easy to use C primitives. It allows you to Hijack a kernel function, Add up to 8 callbacks for the function, Access the original parameters and modify them (retroactive changes), Add or remove a callback when you want, and more. Available for kernel versions 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.10, 2.4.12, 2.4.13, 2.4.14, 2.4.15, 2.4.16, 2.4.17, and 2.4.18.
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Cerberus is an experimental tool kernel based for hardening systems. The main idea in local is that, except particular cases, a process can't have better privileges than his father. If Cerberus intercepts anomalies it kills the process before it starts to run. Cerberus stops remote exploits by ensuring that processes like in.telnetd or tcpd will never drop a shell.
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