Sunday, 17 April 2011

How To Steal Stored Passwords From Firefox

Many of us use the Firefox's built-in password manager to remember and store the password of the sites we login to frequently. While this can be very useful feature, it can be exploited by anyone with physical(or any other form of access to the filesystem) access to know the saved passwords of the user. In this post, I will discuss how you can view and save the stored passwords of your friends for future reference.

When we select "Remember Me" option to store passwords, the passwords are stored in two files.
2. signons.sqlite

These two files are in the profile directory of the mozilla firefox application data for the respective user. Profile folders are placed in a common location by default but are named randomly for additional security (e.g., "xxxxxxxx.default" is the profile folder name for the "default" profile, where xxxxxxxx represents a random strung of characters). This directory is available at different places according to the distribution.

Under windows: %APPDATA%\Mozilla\Firefox\Profiles folder will list the profiles and you can open any of the profiles from there.

Under linux: ~/.mozilla/firefox/xxxxxxxx.default folder is the profile folder. So you can navigate to ~/.mozilla/firefox/ to view the profiles.

Under MAC: ~/Library/Mozilla/Firefox/Profiles/ or ~/Library/Application Support/Firefox/Profiles/ are the folders containing the profile directories.

You can follow any of the following two methods to view the stored passwords:

Method 1: In the target computer, go to Edit->Preferences->Security and click on Saved Passwords and then click on Show Passwords to view the login details of the victim in linux. In windows, you will have to go to Tools->Options->Security.

Method 2: The first method would be applicable only for viewing the login details in victim PC. Whenever you want to save these details for further reference, you will have to copy the previously mentioned two files and save to your USB drive(or maybe in mailbox). Now, all you have to do is copy these two files to the profile directory of your PC and then go to the menus mentioned in method #1.

I hope this was useful. Thanks. :)