Posts Tagged ‘EIFT’

The iPhone is Locked-Down: Dealing with Cold Boot Situations

Thursday, November 9th, 2017

Even today, seizing and storing portable electronic devices is still troublesome. The possibility of remote wipe routinely makes police officers shut down smartphones being seized in an attempt to preserve evidence. While this strategy used to work just a few short years ago, this strategy is counter-productive today with full-disk encryption. In all versions of iOS since iOS 8, this encryption is based on the user’s passcode. Once the iPhone is powered off, the encryption key is lost, and the only way to decrypt the phone’s content is unlocking the device with the user’s original passcode. Or is it?

The Locked iPhone

The use of Faraday bags is still sporadic, and the risk of losing evidence through a remote wipe command is well-known. Even today, many smartphones are delivered to the lab in a powered-off state. Investigating an iPhone after it has been powered off is the most difficult and, unfortunately, the most common situation for a forensic professional. Once the iOS device is powered on after being shut down, or if it simply reboots, the data partition remains encrypted until the moment the user unlocks the device with their passcode. Since encryption keys are based on the passcode, most information remains encrypted until first unlock. Most of it, but not all. (more…)

What can be extracted from locked iPhones with new iOS Forensic Toolkit

Thursday, November 9th, 2017

Tired of reading on lockdown/pairing records? Sorry, we can’t stop. Pairing records are the key to access the content of a locked iPhone. We have recently made a number of findings allowing us to extract even more information from locked devices through the use of lockdown records. It’s not a breakthrough discovery and will never make front page news, but having more possibilities is always great.

Physical acquisition rules if it can be done. Physical works like a charm for ancient devices (up to and including the iPhone 4). For old models such as the iPhone 4s, 5 and 5c, full physical acquisition can still be performed, but  only if the device is already unlocked and a jailbreak can be installed. All reasonably recent models (starting with the iPhone 5s and all the way up to the iPhone 7 – but no 8, 8 Plus or the X) can be acquired as well, but for those devices all you’re getting is a copy of the file system with no partition imaging and no keychain. At this time, no company in the world can perform the full physical acquisition (which would include decrypting the disk image and the keychain) for iPhone 5s and newer.

The only way to unlock the iPhone (5s and newer) is hardware-driven. For iOS 7 and earlier, as well as for some early 8.x releases, the process was relatively easy. With iOS 9 through 11, however, it is a headache. There is still a possibility to enter the device into the special mode when the number of passcode attempts is not limited and one can brute-force the passcode, albeit at a very low rate of up to several minutes per passcode.

The worst about this method is its very low reliability. You can use a cheap Chinese device for trying passcodes at your own risk, or pay a lot of money to somebody else who will do about the same for you. Those guys do have more experience, and the risk is lower, but there still is no warranty of any kind, and you won’t get your money back if they fail.

There are other possibilities as well. We strongly recommend you to try the alternative method described below before taking the risk of “bricking” the device or paying big money for nothing.

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Accessing iOS Saved Wi-Fi Networks and Hotspot Passwords

Thursday, September 28th, 2017

In this how-to guide, we’ll cover the steps required to access the list of saved wireless networks along with their passwords.

Step 1: Make a password-protected backup

In order to extract the list of Wi-Fi networks from an iOS device, you must first create a password-protected local backup of the iOS device (iPhone, iPad or iPod Touch). While we recommend using Elcomsoft iOS Forensic Toolkit for making the backup (use the “B – Backup” option in the main menu), Apple iTunes can be also used to make the backup. Make sure to configure a backup password if one is not enabled; otherwise you will be unable to access Wi-Fi passwords. (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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New Security Measures in iOS 11 and Their Forensic Implications

Thursday, September 7th, 2017

Apple is about to launch its next-generation iOS in just a few days. Researching developer betas, we discovered that iOS 11 implements a number of new security measures. The purpose of these measures is better protecting the privacy of Apple customers and once again increasing security of device data. While some measures (such as the new S.O.S. sequence) are widely advertised, some other security improvements went unnoticed by the public. Let us have a look at the changes and any forensic implications they have.

Establishing Trust with a PC Now Requires a Passcode

For the mobile forensic specialist, one of the most compelling changes in iOS 11 is the new way to establish trust relationship between the iOS device and the computer. In previous versions of the system (which includes iOS 8.x through iOS 10.x), establishing trusted relationship only required confirming the “Trust this computer?” prompt on the device screen. Notably, one still had to unlock the device in order to access the prompt; however, fingerprint unlock would work perfectly for this purpose. iOS 11 modifies this behaviour by requiring an additional second step after the initial “Trust this computer?” prompt has been confirmed. During the second step, the device will ask to enter the passcode in order to complete pairing. This in turn requires forensic experts to know the passcode; Touch ID alone can no longer be used to unlock the device and perform logical acquisition.

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iOS 9.3.5 Physical Acquisition Made Possible with Phoenix Jailbreak

Thursday, August 24th, 2017

If you watch industry news, you are probably aware of the new Phoenix jailbreak… or not. During the last several years, getting news about iOS jailbreaks from reliable sources became increasingly difficult. The sheer number of fake Web sites mimicking the look of well-known resources such as Pangu and TaiG made us extra careful when trying newly published exploits.

Back to Phoenix. This thing is for real. Phoenix claims support for iPhone 4s, 5/5c, iPad 2/3/4, iPad mini, and iPod 5g running the last version of iOS 9.3.5. We were able to verify these claims by successfully jailbreaking several test devices and using Elcomsoft iOS Forensic Toolkit to perform full physical acquisition (as in imaging and decrypting the physical data partition).

With Phoenix jailbreak, iOS Forensic Toolkit can perform physical acquisition of Apple’s 32-bit devices running iOS 9.3.5, which happens to be the last version of iOS 9. Users of iOS Forensic Toolkit can perform physical-level imaging and decryption of the data partition, decryption and examination of keychain items, and enjoy full unrestricted access to sandboxed app data. This level of access is simply not possible with any other acquisition methods. As an example, physical acquisition of jailbroken devices enables forensic access to saved email messages, passwords, and full conversation logs saved by some of the most secure messengers such as WhatsApp, Telegram, Signal, Skype and Facebook Messenger. Compared to iOS backup analysis, this method adds access to browser cache and temporary files, email messages, extended location history, and data that belongs to apps that explicitly disable backups.

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Physical Acquisition Is…

Thursday, July 13th, 2017

…dead? Not really, not completely, and not for every device. We’ve just updated iOS Forensic Toolkit to add physical support for some previously unsupported combinations of hardware (32-bit devices) and software (iOS 9.1 through 9.3.4). The intent was helping our law enforcement and forensic customers clear some of the backlog, finally taking care of evidence kept on dusty shelves in the back room. In order to do the extraction, you’ll need to install the “Home Depot” jailbreak from http://wall.supplies and, obviously, Elcomsoft iOS Forensic Toolkit 2.30.

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iOS 10 Physical Acquisition with Yalu Jailbreak

Monday, January 30th, 2017

Just a few days ago we updated iOS Forensic Toolkit with iOS 10 support. At that time, no jailbreak was available for iOS 10.2. As a consequence, physical acquisition was impossible.

A working jailbreak materialized much sooner than we could’ve hoped. Luca Todesco released a working Yalu102 jailbreak, allowing enthusiasts to mod their devices and enabling forensic experts perform physical acquisition of select iOS devices.

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How Can I Break Into a Locked iOS 10 iPhone?

Thursday, January 26th, 2017

Each iteration of iOS is getting more secure. With no jailbreak available for the current version of iOS, what acquisition methods are available for the iPhone 7, 7 Plus and other devices updating to iOS 10? How does the recent update of Elcomsoft iOS Forensic Toolkit help extracting a locked iOS 10 iPhone? Read along to find out!

iOS 10: The Most Secure iOS

When iOS 8 was released, we told you that physical acquisition is dead. Then hackers developed a jailbreak, and we came up with an imaging solution. Then it was iOS 9 that nobody could break for a while. The same thing happened: it was jailbroken, and we made a physical acquisition tool for it. Now it’s time for iOS 10.2 and no jailbreak (again). While eventually it might get a jailbreak, in the meanwhile there is no physical acquisition tool for iOS 10 devices. Considering that iPhone 7 and 7 Plus were released with iOS 10 onboard, your acquisition options for these devices are somewhat limited.

Plan “B”

With no jailbreak available for iOS 10, what are your options? If you have the latest Elcomsoft iOS Forensic Toolkit, use “plan B” instead!

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iOS Logical Acquisition: The Last Hope For Passcode-Locked Devices?

Thursday, August 11th, 2016

For many months, a working jailbreak was not available for current versions of iOS. In the end of July, Pangu released public jailbreak for iOS 9.2-9.3.3. A few days ago, Apple patched the exploit and started seeding iOS 9.3.4. This was the shortest-living jailbreak in history.

With iOS getting more secure with each generation, the chance of successfully jailbreaking a device running a recent version of iOS are becoming slim. While this may not be the end of all for mobile forensic experts, we felt we need to address the issue in our physical acquisition toolkit.

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