The SucKIT is easy-to-use, Linux-i386 kernel-based rootkit. The code stays in memory through /dev/kmem trick, without help of LKM support nor System.map or such things. Everything is done on the fly. It can hide PIDs, files, tcp/udp/raw sockets, sniff TTYs. Next, it have integrated TTY shell access (xor+sha1) which can be invoked through any running service on a server. No compiling on target box needed, one binary can work on any of 2.2.x & 2.4.x kernels precompiled (libc-free).
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