Login Data: This is a sqlite3 database that contains the URL, username, and encrypted passwords the user wants to store.We only need one thing out of this file and that is the DPAPI encrypted, encryption key. Local State: A json file containing the browser's current configuration.The major elements that have to do with decrypting the user's login data are: But it can be way more secure than this and if you'd like to make your handling of passwords more secure then please see this blog post where I cover the use of my favorite password manager KeePassXC. You probably wouldn't want to be prompted for a browser password every time you log in to a website. This isn't a design flaw, more a sacrifice to usability. Once the user is logged into Windows, everything encrypted by the browser is available to be decrypted. I put "secrets" in scare quotes in the title on purpose. I don't expect you to praise me, I just wanted you to know how hard it was. So I downloaded the source code for Chromium and analyzed the C++ code for the Windows cryptography functions to figure out how it all works. At some point Chromium changed the way they store passwords and the projects haven't been updated. Most of the projects in GitHub to decrypt the passwords that I could find don't work any more. Windows, because in pentesting the vast majority of the time I'm going to have a Windows desktop and maybe Linux servers. Chromium, because it is the basis of the major browsers: Google Chrome, Microsoft Edge, Opera and Brave. To be clear, what I was looking for is the method to decrypt data that Chromium based Windows browsers want to keep secret. Oh, I want that a lot." Trend Micro stops short of showing how to decrypt the passwords so I went looking for some code that did the deed but came up short. Pentesters often use the same methods, while not having the same goals as malware authors, so when I read about getting access to user login data my very first thought was: "I want that. In my last blog post I covered some news out of Trend Micro about malware exfiling browser login data.
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