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How does your computer know how many times....

Discussion in 'BlackHat Lounge' started by porko, Apr 25, 2009.

  1. porko

    porko Registered Member

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    How does your pc know how many times you have used a trial progam? I mean where does it store the info and how do you remove it so you can reinstall the program and use it again after the end of the trial period?
     
  2. porko

    porko Registered Member

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    I should have made my question more specific, what section of the registry and can I safely delete it when I find it.
     
  3. *poohbear*

    *poohbear* Registered Member

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    This is what I used:

    RunAsDate is a small utility that allows you to run a program in the date and time that you specify. This utility doesn't change the current system date and time of your computer, but it only injects the date/time that you specify into the desired application.
    You can run multiple applications simultaneously, each application works with different date and time, while the real date/time of your system continues to run normally.

    Code:
    http://www.nirsoft.net/utils/run_as_date.html
     
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  4. crashed

    crashed Jr. VIP Jr. VIP Premium Member

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    It can be in the registry, a file somewhere, or with some software in the database.

    I'd say get Virtual PC free, install Windows on it, and enable Undo Disks. You can then install the software, run it until it expires, then undo the install and go back to reinstall it again :D
     
  5. neobyte

    neobyte Junior Member

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    Most probably it is stored in a registry, common place would be HKEY\LocalMachine\Sofware\appname\blabla\ and HKEY\Current User\Software\appname\, but it could be stored in a file under the folder where the app is installed, or just the app by itself.

    If it is stored in registry, You could actully backup the registry first, install the application, and do another back up of registry. Then do a comparison of the regstry copy you got before and after the installation. This will give you a clue of what has added or changed.

    A good comparison utility is beyond compare, or use windiff. I think there is good opensource file compare utility somewhere at sourceforge, forget its name but you can search for it and get the one with the most popular one.
     
  6. hwolfpack6

    hwolfpack6 BANNED BANNED

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    Yes, as others have said, it's in the registry.

    The best thing you can do is uninstall the program, google for "[Program Name] Trial Reset", and someone will have instructions out there on the world wide web for unlimited trials.