Let's cut to the chase right now:
Cracking encrypted disk image, AKA DMG is feasible, but, and there are many buts, is extremely, extremely time consuming.
If you do not remember at all the password, or if you attempt to crack in 'blind mode', you will probably need to teach your kids how to do it: By the time you'll have a fighting chance, you'll be long dead.
Step 1: Write down everything you can remember about the forgotten password, i.e what you could have used, and what you are sure not to have used, i.e. never used a space or a '@' sign.
Step 1a: If you remember enough of your password, or if you are just missing trailing numbers i.e Mypassword???? >> MyPassword1234 and do not remember if it's 1234 or 4321, or 9999, Just use CrowbarDMG and a Wordlist.
For good Wordlists, go here!
If you need to create a specific wordlist (because you remember what you may have used and, most importantly, what you may have not used, go here and look for Wordlists On Demand)
Warning!: CrowbarDMG is slow!
CrowbarDMG is basically a GUI for the hdiutil command
ETA for trying 9999 passwords: About 3 hrs
99,999 passwords: About 30 hrs
999,999 passwords: About 300 hrs Or 12 days ....
Step 2: Do you know how to compile and use John The Ripper? I mean 'use it! including editing Rules, etc?
--> No? Proceed here. Read carefully. Pause. Repeat.
--> Yes! Ok, Sure?
1) Download JTR, version Bleeding Jumbo by Magnum
As of Aug 2013, it's here otherwise here
2) Compile. Don't forget to edit the Makefile and John.conf. Check for CUDA and OMP/MPI RUN. Creating a new Charset? that could be wise...
3) Run dmg2John.py to extract the hash
python [path to file ]dmg2john.py [path to file] myfile.dmg > dmg.txt
4) Edit/Create your rules as needed
5) ./ John etc (Run Baby, run ....)
6) There is always Hashcat (Win/Lin)
7) Because most you have seen, in movies, Hackers cracking an AES within minutes, you'll try without thinking too much about it.
It's going to leave you with a lot of time to read ....
Enjoy ...
8) Without going into too much details, the use of GPU assisted is highly recommended. If you have one of those ones, you'll most likely increase your speed by a factor of 1000, sometimes 10,000 times faster.
☞ Password Cracking AES-256 DMGs and Epic Self-Pwnage
(The Keyword here is: 25 GPU)
☞ 'If you have thought about a new cracking method, It's probably already in JtR'
(Matt Weir) (Quoted liberally)
☞ 'I don't care if the NSA teams up with the KGB, a full random 15Ch long AES is practically unbreakable in a lifetime.
(Matt Weir, Quoted Very Liberally, From circa 2009)
EPAG: Empirical Poke-Around Graph
Markov Probabilities
/dmg-files-5a70925bba6177003785cc17-64d5a90ff22744d6a18e67005953d68b.png "How To Open .dmg On Mac")
You cannot open disk image file (.dmg) on your Mac and get the “no mountable file systems” error message? ISumsoft BitLocker Reader for Mac can. In this Video, you will learn a simple trick to open.dmg files on Windows 10.I will show you how to extract.dmg files and how to get the contents inside.d.
- The article shares the ultimate solution to recover DMG files on Mac, or even repair the damaged or corrupted DMG files. Just follow up the instruction and get the desired files from Mac with ease. In order to protect the DMG files, it is recommended to turn on the Time Machine to backup the files or even upload the files to cloud service instead.
- Open 'Disk Utility' from your Applications list. It should be in a folder called Utilities. Step 2 Click 'Mount' at the top and select the.dmg file you want to open.
How To Open .dmg File On Mac
The opening of a dmg file on Mac is very simple because this format is precisely used by Apple’s operating systems for disk images. Thus, it is very common that when you download an Internet program for Mac, come in this format. Apple computers come with two installed programs that allow you to manage the dmg. In unComo.com we explain in detail how to open dmg file mac.
How to open dmg file mac Steps to follow:
one
As we say, the most normal thing is that when you download an Internet program for Mac have the extension dmg and present an aspect like that of the photograph.
two
To open dmg files on Mac, simply hover your mouse over the document and press right button. The system will recommend two alternatives for opening:
- Disk Image Mounter
- Disk Utility
Three
The second alternative to open the dmg file on Mac is in case you want to perform some operation with this disk image, beyond installing the program it contains. Thus, you should open it with Disk Utility.
You may like – The 5 best external hard drives for Mac
Four
If what you want is to install the program on your computer, you will have to open the dmg file on Mac with Disk Image Mounter. Then, an automatic process will begin in which you should not do anything until the screen you see in the picture in the next step appears.
Five
How To Open Dmg File On Macbook
Now, you just have to drag the icon on the left to your Applications folder, which appears on the right. The arrow clearly tells you how to move the mouse. If you double click on the dmg file, it would already open directly with Disk Image Mounter.
Six
In this simple way, you will have already opened the dmg file on Mac and you could have installed the corresponding program on your computer.