This guide outlines the steps required to acquire the password of a local Mac OS X account. The procedure is a bit command heavy but should be relatively straightforward. Old skype for mac 10.7.5. The full guide is written below, but I’ve put together a screencast on our to help walk you through the process (embedded below), but feel free to skip it and read on below. Requirements • A computer running 10.6 Snow Leopard, 10.5 Leopard, or 10.4 Tiger (we have Mountain Lion 10.8 in a, and another one for ) • Either the ability to boot into single-user mode or to log in using the root password. (If the computer has a firmware password be sure to check out our guide.) • Access to an account on the computer you are trying to access. (Administrator account, a limited account, or even a network account. You just need to be able to open up terminal.) We have separate guides for or, if you’re running a newer version of the OS.

Mar 28, 2017  Depending on the type of user you create, you can also do any of the following: For an administrator, select “Allow user to administer this computer.” For a child or other managed user, select “Enable parental controls.” Click Open Parental Controls, then set up restrictions for the user. For more information, see Set up parental controls.

Log in and open Terminal. Log into any account on the computer and open up the Terminal application. This application can be found at /Applications/Utilities/Terminal.app 2. Finding the GUID (Globally Unique Identifier) You first need to find out the Globally Unique Identifier.

This identifies the user to the Mac OS X authentication system, and is the name of the shadow file in which the password is contained. Depending on your version of OS X, enter one of the following commands: If you are using 10.5 Leopard or 10.6 Snow Leopard enter this command: dscl localhost -read /Search/Users/ grep GeneratedUID cut -c15- If you’re on a 10.4 Tiger machine, enter this command: niutil -readprop. /users/ generateduid In both cases replace with the shortname of the account you want to find the password for. Admin or root) You should get a value that looks like A66BCB30-2413-422A-A574-DE03108F8AF2.

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This is the GUID. Write it down, we’ll need it later on. Obtaining the Password Hash Password hashes are the encrypted form of the user’s password. When the user enters their password to log in, the computer encrypts it using an encryption scheme to create a salted SHA1 hash, which it checks against the stored hash in the computer. If they match, the computer logs you in.

We will be using the same method the computer uses to authenticate the login to crack the password. To obtain the password hashes, we need root access. If you have the root password just login as the root user through terminal: type login root, enter the root password when prompted and then continue to Step 3b. However, if you aren’t lucky enough to have the root password you’ll need to boot into single-user mode. Booting in Single User Mode To boot into single-user mode restart the computer. When you hear the start up chime hold down CMD+S.

Soon you should see a black screen with a lot of white text appear. If single-user mode is locked follow one of the other guides on how to gain access. Obtaining the Hash Enter the following into the command line, replacing with the GUID you wrote down from Step 2. Cat /var/db/shadow/hash/ cut -c169-216 After running the command, it should spit back out a hash that’s formatted like this: 3 3BA7C74C318F5D3EF40EB25E1C42F312ACF96. Decrypting the Hash At this point, you need access to another computer (could be the same computer, if you have access for a long time), where we will use the application “John the Ripper” (“John”) to decrypt the hash. John will use ‘brute force’ to determine what the password is in cleartext. That means that the application will systematically generate passwords, encrypt them into the salted SHA1 hash, and check them against the hash you found to see if the password matches.