Encrypted Dmg Forgot Password
Forgot password to an encrypted dmg file. I remember possible passwords that I might have used but none of them work (self.HowToHack) submitted 1 year ago by mufatsa. Any body have some kind of software I can type a few passwords into and it will combine them to crack the dmg file password? I created a a password protected.dmg file and used 256-bit encryption. Since then, I forgot the password. How hard are these files to crack and how would I go about doing it?
In case you have forgotten the Screen Time Passcode on your iPhone, you won’t be able to access Apps and services Locked with Screen Time Passcode. You will find below the steps to either Reset or Recover Screen Time Passcode on iPhone.
Reset or Recover Screen Time Passcode on iPhone
The easiest way to Reset Screen Time Passcode on iPhone is to Factory Reset iPhone and setup it up as a new device.
However, a Factory Reset will completely erase the data on your iPhone and this option is suitable only if you are prepared to lose all your photos and data.
The second option involves the use of a third party tool to actually Recover Screen Time Passcode from an iTunes backup of your iPhone.
The third option is to Restore iPhone using an old backup of iPhone that was made prior to setting up of the Screen Time Passcode or the Restrictions Passcode.
1. Reset Screen Time Passcode Using Factory Reset
Factory Reset will erase all the data on your iPhone, including the Screen Time Passcode, allowing you to setup your iPhone as a new device.
1. Go to Settings > General > Reset > Erase All Content & Settings.
2. On the next screen, tap on Erase Now and wait for the process of Factory Reset to be completed (5 ~ 30 minutes)
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3. Once the Data is Erased, iPhone will Restart with Apple Logo and prompt you to start the setup process.
4. Select Country > choose WiFi Network > Enter WiFi Password > and select Set Up as New iPhone option on Apps & Data screen.
5. Follow the next onscreen instructions to complete the setup process.
Once your iPhone is setup, you can use it without being prompted to enter Screen Time Passcode.
2. Recover Screen Time Passcode Using Decipher Backup
If you do not want to Factory Reset iPhone, you can use this simple method to recover lost or forgotten Screen Time Passcode using a third party tool known as Decipher Backup Browser.
This method of recovering Screen Time Passcode, involves the following 3 steps.
- Make a Backup of iPhone on PC or Mac using iTunes
- Download & Install Decipher Backup Browser on your computer
- Recover Screen Time Passcode using Decipher Backup
While Decipher Backup is available both for Windows and Mac computers, it is easy to download and install on a Windows computer.
In the case of Mac, you will have to follow an extra step to grant Decipher Backup with access to iOS Backups on your computer.
2.1 Backup iPhone to PC or Mac Using iTunes.
Download the latest version of iTunes to your PC or Mac (in case you haven’t already done this) and follow the steps below to make an Encrypted Backup iPhone on your computer.
1. Open iTunes on your Computer and connect iPhone to the USB port of computer
2. Click on the Phone Icon as it appears on the screen of your computer.
3. Next, click on the Summary tab > scroll down to “Backups” section, select This Computer, check Encrypt iPhone Backup and click on Back Up Now button.
Note: You will be prompted to setup a Password for your Encrypted Backup File. Make sure that you write this password for use in the next steps.
4. Wait for iTunes to make a backup of iPhone on your computer. The time to complete the backup will depend on the amount of data available on your iPhone.
2.2. Download and Install Decipher Backup on your Computer
The next step is to download and Install Decipher Backup Browser on your PC or Mac. Paint.net mac download free.
1. Open any web browser on your computer and Download the Free version of Decipher Backup Browser to your computer.
2. Once the File is downloaded, Install Decipher Backup on your computer by double-clicking on the downloaded DecipherBackupBrowser.exe file (in case of Windows PC) and by dragging DecipherBackupBrowser.dmg file to Applications Folder (in case of Mac).
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3. On a Windows Computer, you will be prompted to enter Admin Password. If you are using Mac, follow the instructions as provided on “Getting Started” screen to grant access to Decipher Backup.
2.3. Recover Screen Time Passcode Using Decipher Backup
1. Open Decipher Backup on your computer and it will automatically search and list all the iPhone Backups as available on your computer.
2. From the list of iPhone Backups, click on your current Encrypted iPhone Backup.
3. On the pop-up, enter the Password required to access your Encrypted iPhone Backup and click on OK.
4. Decipher Backup will begin to scan your iPhone Backup and list its contents. Scroll down the list and click on Screen Time Passcode Folder.
5. Once you click on Screen Time Passcode, Decipher Backup will scan this Folder and display your Screen Time Passcode (See above image).
Now that you have recovered your Screen Time Passcode, you can either Disable, Change or continue using the same Screen Time Passcode on your iPhone.
3. Reset Screen Time Passcode Using iTunes
This method can be used only if you have an old Backup of iPhone on computer and you are certain that the backup file does not contain the Screen Time Passcode or the Restrictions Passcode.
1. Open iTunes on your computer > connect iPhone to the USB port of computer
2. Click on the Phone icon as it appears on the screen of your computer
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3. Next, click on the Summary tab, scroll down and click on Restore Backup option located under Manually Back Up and Restore section.
4. On the next screen, select the Old iPhone Backup File from your computer and click on Restore.
Once your iPhone is restored, it will will no longer prompt you to enter Screen Time Passcode.
Jeremiah Grossman is widely considered to be one of the world's most talented ethical hackers, but even his ninja-like prowess wasn't enough to recover a forgotten password used to encrypt sensitive work documents contained on his MacBook Pro.
After fiddling with a freely available password cracking program, the CTO of Whitehat Security soon realized that its plodding speed—about one password guess per second—meant it would likely take him decades of tries before he arrived at the right one. That's when he called in the big guns, namely Solar Designer and other principals behind the free John the Ripper (JtR) password cracker as well as Jeremi Gosney, a password security expert at Stricture Consulting Group. (Ars has chronicled Gosney's cracking prowess in articles here and here.)
'Collectively, these guys are amongst the world's foremost experts in password cracking,' Grossman wrote in a blog post describing the odyssey unlocking the crucial files. 'If they can't help, no one can. No joking around, they immediately dove right in.'
Security concerns—not to mention the enormous size of the DMG encrypted disk images—prevented him from sending the files directly to his rescuers. So he availed himself of a feature in JtR called dmg2john, which separates the encryption contained in a DMG from the data it's protecting. That allows the cracking program to target the password protecting the file without exposing the underlying data.
But even then, there was a problem. Grossman's AES256-encrypted DMG used a staggering 250,000 rounds of PBKDF2-HMAC-SHA-1, an algorithm designed to run extremely slowly to make the job of password cracking harder. Gosney's Xeon X7350 could crack a single round of HMAC-SHA1 at a rate of about 9.3 million hashes per second. By forcing Gosney to repeat the process 250,000 times, his system was reduced to just 37 or so hashes per second. Even using all four processors of his machine, he could bump up the performance to only about 104 hashes per second. (JtR doesn't support graphics cards when cracking Apple's latest DMG formats.)
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Grossman continued:
Once understanding this, Jeremi begins asking for more information about what the extra six or so characters in my password might have been. [Were] they all upper and lower case characters? What about digits? Any special characters? Which characters were most likely used, or not used? Ever bit of intel helped a lot. We managed to whittle down an in initial 41106759720 possible password combinations to 22472. This meant the total amount of time required to crack the DMG was reduced to 3.5 minutes on his rig.
Subsequently, Jeremi sent me what had to be one the most relieving and frightening emails I’ve ever received in my life. Relieving because I recognized the password immediately upon sight. I knew it was right, but my anxiety level remained at 10 until typing it in and seeing it work. I hadn’t touched my precious data in weeks! It was a tender moment, but also frightening because, well, no security professional is ever comfortable seeing such a prized password emailed to them from someone else. When/if that happens, it typically means you are hacked and another pain awaits.
Interestingly, in living out this nightmare, I learned A LOT I didn’t know about password cracking, storage, and complexity. I’ve come to appreciate why password storage is ever so much more important than password complexity. If you don’t know how your password is stored, then all you really can depend upon is complexity. This might be common knowledge to password and crypto pros, but for the average InfoSec or Web Security expert, I highly doubt it.
Grossman's predicament, and the techniques used to resolve it, underscore the never-ending battle between password security and the latest cracking strategies. For much more about the techniques used to create and defeat strong passwords, see the Ars feature 'Why passwords have never been weaker—and crackers have never been stronger.'