Hacking Deepfreeze

Deep Unfreezer is a tool that allows you to change the state of Deep Freeze without needing the password.

Deep Unfreezer was successfully tested on the following versions of Deep Freeze:

Windows 9X:

3.32.000.0534, 5.10.051.1089, 5.20.250.1125, 5.30.150.1181, 5.40.051.1248, 5.50.051.1288, 5.50.051.1299, 5.50.051.1302, 5.50.150.1302, 5.60.051.1347, 5.60.150.1347, 5.70.051.1372, 5.70.250.1372, 5.70.051.1378 and 5.70.250.1378

Windows 2K/XP:

4.20.020.0598, 4.20.021.0613, 4.20.120.0604, 4.20.121.0613, 5.10.021.1089, 5.20.220.1125, 5.30.120.1181, 5.40.021.1248, 5.50.021.1288, 5.50.021.1299, 5.50.021.1302 (not patched/patched), 5.50.120.1302 (not patched/patched), 5.60.021.1347 (not patched/patched), 5.60.120.1347 (not patched/patched), 5.70.021.1372, 5.70.220.1372, 5.70.021.1378 and 5.70.220.1378

Warning:

This program is potentially dangerous and may crash the computer or even corrupt the system and cause a permanent failure. It should be considered a last resource. Before running the program you should make back up copies of the system registry and the configuration file of Deep Freeze. The author takes no responsibility for any damage this program may produce.

Download DeepUnfreezer 1.6.rar

Deep Unfreezer manual

1. Using Deep Unfreezer is quite easy. To check out the current state of Deep Freeze click on the 'Load' button. The position of the radio buttons will change to the current state.

2. To save the state click the 'Save' button.

3. Depending on the version of Deep Freeze, the program may need to read some information from the service file. Deep Unfreezer tries to find the file automatically, if it doesn't succeed the user must specify the file location manually.

4. For the latest versions of Deep Freeze (5.50 and above) for Windows 2K/XP the following rules apply:

Deep Unfreezer must be run under an account with debug privileges. By default Deep Freeze disables this privilege. Deep Unfreezer tries to enable this privilege automatically, if it fails the program will show the message 'WARNING: Not running from service'. To manually enable this privilege you have two options: follow the steps described on How to enter Deep Freeze configuration dialog without the password or using the Administrator account use the 'at' command to run the program with the System account. The 'at' command allows you to run programs at a given time, so if it's 12:00 and the file is in C:\ you can run Deep Unfreezer with the following command: at 12:01 /interactive "C:\DeepUnfreezer1.6.exe". When the clock changes to 12:01 the system will run Deep Unfreezer with debug privileges.

Deep Unfreezer can change the state as long as the service (DF5Serv.exe) had started and is running or if the service had never started at all. If the service started and for some reason it stopped, Deep Unfreezer wont be able to change the state. In the case the service had never been started Deep Unfreezer must be run from the System account and you will be able to change the state as long as you don't close Deep Unfreezer. Once the program is closed, the only way to change to state again is to reboot the computer. Deep Unfreezer tries to run from the System account automatically, if it fails the program will show the message 'WARNING: Not running from service'. To manually run Deep Unfreezer from the System account use the 'at' command described above.