![]() Windows 7: Exactly the same as Vista, just the certificate version was increased from SLIC 2.0 to SLIC 2.1. Many BIOS modifications were used to exploit this method, from initial ISA module loaders to rather complex ACPI edits. If the SLIC table was present, and matched a signed certificate, Windows would activate, completely offline. Once an OEM serial had been given, the system firmware would be checked for a SLIC table, and the contents compared to any and all OEM certificates that had been loaded by Windows. The Royalty OEM process was triggered by use of a generic OEM serial number, common to all computers sold by a particular OEM. The certificates themselves were signed by a Microsoft private key to resist tampering. When Windows installed, it could be given certificate files with appropriate OEM information and public keys. SLIC was a custom ACPI table that contained a public key encrypted OEM certificate. Microsoft had observed some limited abuse of the old oembios system in the latter days of XP, and they wanted a new, more tamper-resistant method. Since the old VLK path was now fully locked off, pirates now looked into Royalty OEM methods. Volume customers (businesses) were steered towards KMS and MAKs, which are useful but not for Royalty OEMs and/or pirates. There are no longer any "magic keys" which allow an unlimited number of offline activations. Starting with Vista, VLKs as they had been were over. Windows Vista: First generation ACPI table locks (SLIC): With the lessons learned from XP activation and the abuses thereof, Microsoft decided that a more active approach was needed in later OSes. This wasn't widely abused by pirates because VLKs were easier, but towards the later days of XP, it grew in popularity because it was easy to abuse, and hard for MS to check and invalidate. If the OEM check scanned the appropriate memory addresses and found one or more matching strings, activation was done, OS was activated. oembios.bin was a somewhat obfuscated and MS-signed file describing memory locations and copyrighted/trademarked data to look for at those locations. OEM validation consisted on checking the oembios files. Later many/most VLKs got blacklisted, but just generate more! Royalty OEM activation at this point used generic XP keys which simply provoked OEM validation. VLKs were not checked online in any way in XP/2003, so this was ideal. Windows XP: Online activation and OEM SLP bios locks: Commonly defeated by pirates by simply using VLKs. Windows 2000 and prior: OEM protection is pretty much a joke, just changing the product ID to the right numbers removed all serial prompts. OEM activation down through the ages, oldest to newest, with a particular focus on how it can be used and abused, with customer/user OSes as the default: Ok, sorry to wade in here with my cluebat on my first post, but there's a lot of misinformation and almost-not-quite in this thread, and I feel compelled to educate. Create a new text file and paste the following into it: Once you have the folder structure, open the "Sources" folder.ģ. Copy the content's of your Windows setup media (in the case of a CD) or extract it from the ISO (in the case of a DL).Ģ. It is at this point I learnt that it is possible to exploit legacy Windows setup behaviour. We need a way to actually stop the Windows setup using this license in the first place. It is possible to view it using BIOS tools or even use more commonly known programs such as Belarc. There is no way to alter the license key that is stored in the BIOS. ![]() Get an error message stating that the license key won't work. Attempt to activate your unused license to unlock additional features (e.g. After installation, note that Windows is already activated.Ħ. During OS re-installation process, notice that the setup never asked you to enter the license key.ĥ. Prepare a superior version of Windows key that you have (never been used license).Ĥ. Reformat HD per usual OEM bloat removal.ģ. ![]() I make note of it however as this is my first encounter of it:Ģ. For those who aren't already aware (because this has apparently been happening for along time already), you may encounter the following situation.
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