In our previous blog post we have described how we broke the encryption in iOS devices. One important thing was left out of that article for the sake of readability, and that is how we actually acquire the image of the file system of the device. Indeed, in order to decrypt the file system, we need to extract it from the device first.
Archive for the ‘Software’ Category
ElcomSoft researchers were able to decrypt iPhone’s encrypted file system images made under iOS 4. While at first this may sound as a minor achievement, ElcomSoft is in fact the world’s first company to do this. It’s also worth noting that we will be releasing the product implementing this functionality for the exclusive use of law enforcement, forensic and intelligence agencies. We have a number of good reasons for doing it this way. But first, let’s have a look at perspective.
Despite the fact that iPhone and Android keep on biting off greater parts of smartphone market, BlackBerry fans are still there, in spite of its various peculiarities. I won’t compare multi-touch displays, HD cameras, smart sensors, applications or anything like that. I’d rather talk about BlackBerry Desktop Software. Yes, it can create backups, restore information from backups, and synchronize with Outlook only, period. But that’s just not enough… (more…)
Most modern CPUs are multi-core – it is not easy to find even a laptop with less than two cores these days. And for desktops, 4 cores are usual now.
Password recovery is one of most CPU-intensive tasks, and it fits best into multi-processor architecture. Every CPU (or CPU core) get its own portion of passwords to try (i.e. to check their validness), and they all work in parallel. As simple as that.
So what we’re doing in our software is running multiple threads – as many as the number of CPUs (or cores) available. And the rest is being done by the operating system, that assigns the threads to cores (well, in most cases we don’t care what particular core is going to execute a particular thread, because they are all equal; the only exception is when one or more of the cores is doing something already, I mean something CPU-intensive as well).
A true security system cannot be so fragile: Canon Original Data Security broken…
Now if your partner gets a compromising anonymous image where you are enjoying yourself with nice blond with blue eyes or charming young man, don’t panic and don’t get upset, you can easily prove it is just a fake (even if it’s not ). Seriously, how can we trust photographic evidence in the era of Photoshop and other designer tools? The genuineness of a digital image can only be proven by special digital tools…like OSK-E3?
Unfortunately or maybe fortunately, it turned out that OSK-E3 (Canon Original Data Security Kit) cannot guarantee image authenticity, because now it can recognize even fake images as true and genuine. However, the problem is not in OSK-E3, it is in Canon Original Data Security system implemented in most modern Canon DSLR (Digital Single-Lens Reflex) cameras.
Now it’s possible (well, Dmitry did it recently and who knows if somebody could do it earlier ) to dump camera’s memory, extract secret keys from the camera, and calculate ODD (= Original Decision Data) which answer for any changes done to the image. And thus name the modified image as original one.
What Canon can do? It seems like Canon can nothing do with their models right now, because the fundamental problem lies not in the software. Changing the software could possibly solve the question, until someone again finds its vulnerability. But adding cryptoprocessors that won’t expose the secret key and thus will prevent from any penetrations from outside would close the loophole.
Have a look at some of our fake images that pass verification test by OSK-E3: http://www.elcomsoft.com/canon.html
So, can you now trust Canon’s OSK decision if an image is original or not?
What is a Web browser for you? It’s virtually a whole world, all together: web sites, blogging, photo and video sharing, social networks, instant messaging, shopping… did I forget anything? Oh yes, logins and passwords. Set an account here, sign in there, register here and sing up there – everywhere you need logins and passwords to confirm your identity.
Yesterday, we recovered login and password information to Internet Explorer only, but it was yesterday… Now, Mozilla Firefox, Apple Safari, Google Chrome and Opera Web browsers are at your disposal.
Let’s plunge into some figures…
Although this new book is on sale from January this year, we are happy to officially say our words of gratitude to Kevin Beaver and advise it to you.
In his book Kevin insists that the best way to really understand how to protect your systems and assess their security is to think from a hacker’s viewpoint, get involved, learn how systems can be attacked, find and eliminate their vulnerabilities. It all practically amounts to being inquisitive and focusing on real problems as in contrast to blindly following common security requirements without understanding what it’s all about.
Kevin extensively writes on the questions of cracking passwords and weak encryption implementations in widely used operating systems, applications and networks. He also suggests Elcomsoft software, in particular Advanced Archive Password Recovery, Elcomsoft Distributed Password Recovery, Elcomsoft System Recovery, Proactive Password Auditor, and Elcomsoft Wireless Security Auditor, as effective tools to regularly audit system security and close detected holes.
In this guide Kevin communicates the gravity of ethical hacking in very plain and clear words and gives step –by- step instructions to follow. He easily combines theory and praxis providing valuable tips and recommendations to assess and then improve security weaknesses in your systems.
We want to thank Kevin for testing and including our software in his very “digestible” beginner guide to hacking and recommend our readers this book as a helpful tool to get all facts in order.
Today we have released Elcomsoft iPhone Password Breaker 1.20 which introduces two new features and fixes few minor issues.
This feature allows to view contents of keychain included with encrypted device backup.
Mac users are probably familiar with concept of keychain — it is a centralized, system-wide storage where application can store information they consider sensitive. Typically, such information includes passwords, encryption keys and certificates, but in principle it can be anything. Data in keychain is cryptographically protected by OS and user password is required to access it. The closest Windows equivalent for keychain is probably Data Protection API.
iOS-based devices also have a keychain, but instead of user password, embedded cryptographic key is used to protect its contents. This key is unique to each device and so far there are no way to reliably extract it from the device.
Apple recommends iOS application developers to use keychain for storing passwords and other sensitive information, and one reason for this is that it never leaves device unencrypted. Here’s an excerpt from Keychain Service Programming Guide:
In iOS, an application always has access to its own keychain items and does not have access to any other application’s items. The system generates its own password for the keychain, and stores the key on the device in such a way that it is not accessible to any application. When a user backs up iPhone data, the keychain data is backed up but the secrets in the keychain remain encrypted in the backup. The keychain password is not included in the backup. Therefore, passwords and other secrets stored in the keychain on the iPhone cannot be used by someone who gains access to an iPhone backup. For this reason, it is important to use the keychain on iPhone to store passwords and other data (such as cookies) that can be used to log into secure web sites.
Prior to iOS 4 keychain was also included in the backup ‘”as is”, i.e. all data inside was encrypted using unique device key. This meant that it was not possible to restore keychain onto another device — it will try to decrypt data with key which is different from one used to encrypt data. Naturally, this will fail and all data in keychain will be lost.
To address this issue, Apple changed the way keychain backup works in iOS 4. Now, if you’re creating encrypted backup (i.e. you’ve set up a password to protect backup) then keychain data will be re-encrypted using encryption key derived from backup password and thus ca be restored on another device (provided backup password, of course). If you haven’t set backup password, then everything works like before iOS 4 — keychain encrypted on device key is included in the backup.
Elcomsoft iPhone Password Breaker now allows you to view contents of keychain from encrypted backup of devices running iOS 4. You will need to provide password, of course. Here’s screenshot of Keychain Explorer showing (some) contents of my iPhone’s keychain:
There are passwords for all Wi-Fi hotspots I have ever joined (and haven’t pushed “Forget this Network” button), for my email, Twitter, and WordPress accounts, as well as Safari saved passwords and even my Lufthansa frequent flyer number and password! And I don’t use Facebook/LinkedIn/anything else on my phone — otherwise I guess credentials for those will be also included in the keychain.
Keychain Explorer will work only against backup which is encrypted. If you happen to have an iOS 4 device and want to get password from it — set a backup password in iTunes, backup device, use Keychain Explorer to view and/or export keychain passwords, and, finally, remove backup password in iTunes.
This feature is far less exciting than Keychain Explorer, but we believe it should improve user experience with Elcomsoft iPhone Password Breaker.
The idea is simple: all passwords which are found by EPPB or which are used to open backup in Keychain Explorer are stored in password cache. When you later try to open backup in Keychain Explorer or recover a backup password, program first checks password cache for correct password.
Passwords in cache are stored using secure encryption.
Also, there is a new EPPB FAQ online. Worth reading if you’re thinking of purchasing EPPB or want to learn more about it.
There is at least one really big update for EPPB coming in September or October, so stay tuned!
According to the preliminary results of our latest questionnaire (ElcomSoft Customer Reference program Questionnaire) the majority of people forget their passwords when returned from holidays, thus being blocked out from the precious information they have on the PC.
I bet that lots of people found themselves or those around in a similar situation at least once. Let me share my personal experience with you. One of my friends, having returned from the vacation in a tropical paradise, was pleased to see a new computer at her desk (while she was away the company renewed some of the machines) and at the same time very much discouraged and upset to find out that many of her passwords remained in her old pc and she didn't bother herself to save them anywhere else. So the access to the mail account from her new modern PC was forbidden, as well as access to several password-protected websites (from social networks to online banking). Nothing to be happy with, isn’t it?!! But such a story no longer has a sad ending due to the release of Elcom’s new recovery tool, namely ElcomSoft Internet Password Breaker. In the above described situation EINPB revealed necessary passwords stored in the old computer, thus letting a person replace the password-protected data from one machine to another. One more important remark in this respect is that my friend didn’t have to seek help of the “user-unfriendly sysadmin”
What’s special about EINPB? Let’s have a quick jog through some of its features. Our new tool instantly reveals cached passwords to Web sites in Microsoft Internet Explorer, mailbox & identity passwords in lots of Microsoft versions. It as well supports the new security model employed by Microsoft Internet Explorer 7 and 8.