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rule alg_crypto_rc4 {
    meta:
        descrption = "Identify code for the (A)RC4 cryptographic algorithm."
        author = "@shellcromancer <root@shellcromancer.io>"
        version = "0.1"
        date = "2022-01-03"
        reference = "https://www.goggleheadedhacker.com/blog/post/reversing-crypto-functions#identifying-rc4-in-assembly"
        reference = "https://0xc0decafe.com/detect-rc4-encryption-in-malicious-binaries/"
        reference = "https://blog.talosintelligence.com/2014/06/an-introduction-to-recognizing-and.html"
    strings:

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/*
 * fork.c
 * Experimental fork() on Windows.  Requires NT 6 subsystem or
 * newer.
 *
 * Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.

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Enable DCI debugging on Gigabyte-BKi5HA-7200
--------------------------------------------

The Gigabyte-BKi5HA-7200 (Kabylake i5-7200 processor) can be debugged with only a USB debug cable, a
special cable that crosses only the data signals and has the power signals
removed. You can buy these cables at i.e. https://www.datapro.net/products/usb-3-0-super-speed-a-a-debugging-cable.html
The hurdle you have to overcome  before you can access DCI however is that you
need to set some bits in hardware that first enable DCI and also enable the debug port so that DCI can control the cores.
There are lots of guides in howto patch the BIOS but only these two really describes all the steps using only freely accessible tools: