In an attempt to improve the security of the SAM database against offline software cracking, Microsoft introduced the SYSKEY function in Windows NT 4.0. When SYSKEY is enabled, the on-disk copy of the SAM file is partially encrypted, so that the password hash values for all local accounts stored in the SAM are encrypted with a key (usually also referred to as the "SYSKEY").
In the case of online attacks, it is not possible to simply copy the SAM file to another location. The SAM file cannot be moved or copied while Windows is running, since the Windows kernel obtains and keeps an exclusive filesystem lock on the SAM file, and will not release that lock until the operating system has shut down or a blue screen exception has been thrown. However, the in-memory copy of the contents of the SAM can be dumped using various techniques, making the password hashes available for offline brute-force attack.
Removing LM Hash
Most versions of Windows can be configured to disable the creation and storage of valid LM hashes when the user changes their password. This is the default setting in Windows Vista, but was disabled by default in previous versions of Windows. Note: enabling this setting does not immediately clear the LM hash values from the SAM, but rather enables an additional check during password change operations that will instead store a "dummy" value in the location in the SAM database where the LM hash is otherwise stored. (This dummy value has no relationship to the user's password - it is the same value used for all user accounts.]
As well, LM hashes cannot be calculated when the user chooses a password of over 14 characters in length. Thus, when a user (or administrator) sets a password of 15 characters or longer, the LM hash value is set to a "dummy" value, which is not valid for authentication purposes.
Create Administrator like account
This article introduce very simple way to get Administrator like account and do the job and after finish recover your way, after that Get Admin Password later in your home by Cracking, After get the Admin Password Create a hidden user account and do all your jobs free, and Explain how to make a USB Storage Device Bootable corresponding to any system boot, and how to bypass Mother Board password by Default Passwords, and how to extract it if you are in the system
Close Look to hole
Microsoft stores all Security Information in many files but the main file is the SAM file (Security Accounts Manager)! this file contain critical information about users account you can explore the folder
$windir$\system32\config
Dose Microsoft Know and Why!?
Yes Microsoft Know all things, and done on purpose why? I always for many years ask my self why Microsoft doesn’t do real security on their systems from the CD setup to all security aspects In the system, I found(my opinion may wrong)that they need to achieve 2 strategic things
1- They need their software spread and all depend on it and in one day when they feel that they are the One The security will done and all money will go to One Pocket
2- They Forced/Like to Make Some Organizations Hack other systems
Proof:
They can make this File SAM Unavailable by storing the information in FAT, FAT32, NTFS Areas (Sectors reserved by The Operating SYSTEM to Store the Addresses of the files on the HardDisk File Allocation Table) So that it is hard to extract. But they don't!!!!!
Why we need NTFS ?
If the Partition of the Windows System is NTFS so with normal Startup you will not be able to access any files because the File System is not Recognized by MS-DOS when we install NTFSDOS Professional on the bootable disk it will allow you To Access any File Under NTFS
Understand the Idea
The SAM file contains a Security Information, when windows launches it enters directly to the system without asking about any password and windows will store this Account in The SAM file on PC. So the SAM file on PC contain an Account which will make you enter Directly to the Windows, so take your SAM File and Replace (by renaming, we will need the original file to recover our way) It with the other SAM File in The Other System or Machine So When you restart It will make you enter directly to the Windows With Administrator Like Account ,do what you need and then back all things to the previous state. All These Steps will be under other system bootable DOS, Knoppiex, Windows Live CD, Because Windows will not make u able to copy the Files
After you get the SAM File and System File there are Programs That extract the Accounts and their passwords, depending on the idea of cracking the HASH (the HASH is one way encryption method) so that The program will generate random passwords and convert them to HASH and then compare it with the HASHES in the SAM File
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