Posts Tagged ‘Apple iCloud’

Breaking Apple iCloud: Reset Password and Bypass Two-Factor Authentication

Tuesday, November 28th, 2017

Who am I to tell you to use two-factor authentication on all accounts that support it? This recommendation coming from someone whose business is supplying law enforcement with tools helping them do their job might be taken with a grain of salt by an average consumer. Yet we still strongly believe that, however good a password you have to encrypt your local documents or NAS drives, any remotely popular online service absolutely requires an additional authentication factor.

We covered the risks related to passwords more than once. There is no lack of horror stories floating on the Internet, ranging from leaking private photos to suddenly losing access to all data and devices registered on a certain account. Today, smartphones store excessive amounts of information. If any of that data is synced with a cloud, the data will be shared with something other than just your device.

So what is that “other” thing that you need to secure access to your account? It might be something you have in addition to something you know. Something that cannot be easily stolen or accessed remotely. This is exactly what two-factor authentication is for.

All three major mobile companies, Apple, Google and Microsoft, offer very different implementations of two-factor authentication. Speaking Google, you have several convenient options: SMS (which is not really secure, and Google knows it), the recently added Google Prompt, the classic Google Authenticator app, printable backup codes, FIDO keys and a few more. (Spoiler: if you are on a different side and need to extract the data as opposed to protecting it, we have an app for that).

What about Apple? There are a few things you should definitely know about Apple’s implementation. The problem with Apple is that Apple accounts protected with two-factor authentication can be actually less secure at some points. Surprised? Keep reading.

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Target: Apple Two-Factor Authentication

Tuesday, November 28th, 2017

Two-factor authentication is essential to secure one’s access to online accounts. We studied multiple implementations of two-factor authentication including those offered by Apple, Google and Microsoft. While Google’s implementation offers the largest number of options, we feel that Apple has the most balanced implementation. The closed ecosystem and the resulting deep integration with the core OS makes it easy for Apple to control exactly how it works and on which devices.

Suppressing the Prompt

Since Apple introduced Two-Factor Authentication (as a replacement of the older and much less secure Two-Step Verification), Apple customers are alerted immediately of someone’s attempt to access their Apple account. A 2FA prompt is pushed instantly and concurrently to all devices the user has in their Apple account once someone attempts to log in. This has always been a hassle for forensic experts trying to perform investigations without alerting the suspect, as merely entering a login and password and seeing a 2FA prompt would mean it’s already too late, as the suspect has been alerted with a prompt.

Or, better to say, it used to be an issue. Just not anymore! Elcomsoft Phone Breaker 8.1, our newest release, now carries out an additional check (which wasn’t exactly easy to make since there is no official API and obviously no documentation), allowing the tool to detect whether or not Two-Factor Authentication is enabled on a given Apple account without triggering a 2FA prompt. The expert will now have the choice of whether to proceed (and potentially alert the suspect) or stop right there.

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Obtaining Detailed Information about iOS Installed Apps

Tuesday, October 3rd, 2017

Accessing the list of apps installed on an iOS device can give valuable insight into which apps the user had, which social networks they use, and which messaging tools they communicate with. While manually reviewing the apps by examining the device itself is possible by scrolling a potentially long list, we offer a better option. Elcomsoft Phone Viewer can not just display the list of apps installed on a given device, but provide information about the app’s version, date and time of acquisition (first download for free apps and date and time of purchase for paid apps), as well as the Apple ID that was used to acquire the app. While some of that data is part of iOS system backups, data on app’s acquisition time must be obtained separately by making a request to Apple servers. Elcomsoft Phone Viewer automates such requests, seamlessly displaying the most comprehensive information about the apps obtained from multiple sources.

In this how-to guide, we’ll cover the steps required to access the list of apps installed on an iOS device. (more…)

Elcomsoft Phone Breaker 8, New Apple Devices and iOS 11

Thursday, September 14th, 2017

With all attention now being on new iPhone devices, it is easy to forget about the new version of iOS. While new iPhone models were mostly secret until announcement, everyone could test iOS 11 for months before the official release.

Out previous article touches the issue of iOS 11 forensic implications. In this article we’ll cover what you can and what you cannot do with an iOS 11 device as a forensic expert. We’ll talk about which acquisition methods still works and which don’t, what you can and cannot extract compared to iOS 10, and what you need to know in order to make the job don’t.

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iOS 11: jailbreaking, backups, keychain, iCloud – what’s the deal?

Thursday, September 14th, 2017

iOS 11 is finally here. We already covered some of the issues related to iOS 11 forensics, but that was only part of the story.

Should we expect a jailbreak? Is there still hope for physical acquisition? If not, is logical acquisition affected? Are there any notable changes in iCloud? What would be easier to do: logical or iCloud acquisition, and what are the prerequisites for either method? What do you begin with? How to make sure the suspect does not alter their iCloud storage or wipe their device in the process? Can we actually get more information from the cloud than from the device itself, even with physical, and why?

Spoiler: the short answer to the last question is “yes”. The long answer is a bit complicated. Keep reading.

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How to Extract iCloud Keychain with Elcomsoft Phone Breaker

Tuesday, August 22nd, 2017

Starting with version 7.0, Elcomsoft Phone Breaker has the ability to access, decrypt and display passwords stored in the user’s iCloud Keychain. The requirements and steps differ across Apple accounts, and depend on factors such as whether or not the user has Two-Factor Authentication, and if not, whether or not the user configured an iCloud Security Code. Let’s review the steps one needs to take in order to successfully acquire iCloud Keychain.

Pre-Requisites

Your ability to extract iCloud Keychain depends on whether or not the keychain in question is stored in the cloud. Apple provides several different implementations of iCloud Keychain. In certain cases, a copy of the keychain is stored in iCloud, while in some other cases it’s stored exclusively on user’s devices, while iCloud Keychain is used as a transport for secure synchronization of said passwords.

In our tests, we discovered that there is a single combination of factors when iCloud Keychain is not stored in the cloud and cannot be extracted with Elcomsoft Phone Breaker:

  • If the user’s Apple ID account has no Two-Factor Authentication and no iCloud Security Code

In the following combinations, the keychain is stored in the cloud:

  • If the user’s Apple ID account has no Two-Factor Authentication but has an iCloud Security Code (iCloud Security Code and one-time code that is delivered as a text message will be required)
  • If Two-Factor Authentication is enabled (in this case, one must enter device passcode or system password to any device already enrolled in iCloud Keychain)

In both cases, the original Apple ID and password are required. Obviously, a one-time security code is also required in order to pass Two-Factor Authentication, if enabled. (more…)

The Past and Future of iCloud Acquisition

Monday, August 21st, 2017

In today’s world, everything is stored in the cloud. Your backups can be stored in the cloud. The “big brother” knows where you had lunch yesterday and how long you’ve been there. Your photos can back up to the cloud, as well as your calls and messages. Finally, your passwords are also stored online – at least if you don’t disable iCloud Keychain. Let’s follow the history of Apple iCloud, its most known hacks and our own forensic efforts.

The Timeline of iCloud and iOS Forensics

Our first iOS forensic product was released in February 2010. In 2010, we released what is known today as Elcomsoft Phone Breaker (we then called it “Elcomsoft Phone Password Breaker”). Back then, we were able to brute-force the password protecting encrypted iTunes-made iOS backups. At the time, this was it: you’ve got the password, and off you go. The tool did not actually decrypt the backup or displayed its content; it just recovered the password.

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On Apple iCloud security and ‘deleted’ notes

Friday, May 19th, 2017

Apple, it’s not funny anymore.

Apple iCloud is a fantastic service. For me, it works far better than Google services, especially when it comes to cloud backups. I use it daily when working with my iPhone, iPad, Mac and MacBook at home. In the office, I still have to use the good old Windows PC, and I hate it. I use iCloud backups to keep my data safe (secured with two-factor authentication), and it really helped me on at least two occasions when I had my iPhone lost or broken far away from home. I use iCloud Photo Library to get my photos synced across devices. I actively use iCloud Drive when working with documents. I use iCloud syncing, including the keychain, to store my passwords and credit card data and have them all handy. I should say that I cannot work effectively without iCloud.

But we have a lot of security and privacy concerns. We completely understand that it is not possible to pick all three from the “security, privacy, usability” trio, but please give at al least two.

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