Encrypted Dmg File To Ipsw

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A tool for decrypting Apple encrypted disk images.Both old 'v1' and current 'v2' images are supported.This tool can also decrypt iphone rootfilesystem diskimages.

Several types of diskimages exist:

with the cdsaencr v1 header at the end of the file.
- one passphrase wrapped key
with the 'encrcdsa' v2 header at the start of the file.Can have multiple wrapped keys:
- passphrase wrapped key(s)
- certificate wrapped key(s)
- third unknown option, 'keybag'
iphone firmware images are a special case of the v2 passphrasewrapped keys, where the kdf part is skipped, even thoughthe header does specify use 'pbkdf2'.

There are several ways of creating encrypted diskimages

Disk Utility.app using CMD-N
from the commandline, using hdiutil Ark leedsichthys how much dmg per hit.
hdiutil create -srcfolder testfiles -size 16m -fs HFS+ -encryption AES-128 encryptedimage.dmg

In a script, you can use -stdinpass to avoid hdiutil to prompt for a password. The entireinput, including LineFeeds will be used for the password. So this:

Will create an encrypted image where the password is: test1234 + LF.

mounting

Disk images can be mounted by opening them in Finder, or using the commandline:

Which will prompt the user for a password, alternatively, the password can be passed using a script:

Pass the -nomount option When you want to attach without mounting, you can then access the contentsof the disk image via its /dev/diskNN or /dev/rdiskNN device.

Pass the -readonly when you want to mount the image in read-only mode.

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decrypting

You can decrypt such images using my tool:

This will save the decrypted image as encryptedimage-decrypted.dmg

certificates

A special option exists in hdiutil to create diskimages which can be decrypted using a RSA privatekey.

Decrypt such an image using the following commandline:

How to convert dmg file to ipa. It can burn, split, and encrypt files easily. Mac users can download PowerISO for free.Steps to download PowerISO:. Note that Power ISO is available as a paid product for WIndows!

Iphone images are downloaded as .ipsw files.

The ipsw file is a PKZIP file, this file contains several diskimages:

018-5302-002.dmg, the root filesystem
018-5304-002.dmg, 018-5306-002.dmg, the encrypted update and restore ramdisk images.

Decrypting iphone ramdisk images is done using a different tool, named img3tool.

The rootfilesystem is encrypted with a hash of either of the decrypted ramdisk images. To use this hash to decrypt theroot filesystem, you have to pass the -n option disabiing the normal password hashing code.

Alternatively, when you know the master key, you can specify this directly using -K

v2input: passphrase, blocknum, encrypteddata

or as a simplied diagram:

Note that getting the wrong hmackey, will result in only the first 16 bytes of each disk block being incorrect.This makes it possible to swap diskblocks around with only minimal 'damage' to the block.In practice maybe not of much use, since the contents of the dmg is usually compressed.

I noticed that in practice the HMAC key and the AES key are usually the same in the unwrapped keydata.They could have been different, but apparently Apple's disk image tools create the keyblob with identical keys.Not a major issue, but it does mean less entropy is used in the algorithm.

Cannot open the file as dmg archive. .Way #1: Open DMG Files on Windows with 7-ZIP7-ZIP is a lightweight freeware which is easily available on the internet market. But we would restrict our discussion here only upto DMG. And that is what we are going to discuss in this article - ways to view the DMG files on Windows 10/7/8. It not only extracts DMG files but all other of compressed files, such as ZIP, CAB, ISO, RAR, WIM, etc.

The relevant headers from the MacOSX sdk:

Several projects i took inspiration from:

- for instance: DiskImageFile.cpp
- see the dmg/encrypted folder

Also, i decompiled the DiskImages framework binary, which has functions like:CEncryptedEncoding::loadHeaderAndKeys, or CEncryptedEncoding::decodeV1Header

An ipsw file extension is used for iPhone, iPad or iPod Touch software firmware update files. IPSW archive contains DSG Apple disk images with iOS system installation, updates and fixes that are installed to iOS device via iTunes.

Software that open ipsw file

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IPSW file extension- iPhone, iPad or iPod Touch iOS software firmware update

What is ipsw file? How to open ipsw files?

File type specification:

ipsw file icon:

The ipsw file extension is associated with Apple portable devices (iPhone, iPad or iPod Touch) that use iOS operating system and Apple iTunes.

The ipsw archive contains encrypted DMG Apple disk images with iOS system installation, updates and fixes.

DMG images and settings files can be extracted from .ipsw file by compression utilities that support ZIP compression file format. Only rename ipsw file extension to ZIP.

IPSW images are automatically downloaded from Apple update servers by iTunes that can also installs data from .ipsw file to iOS device. iTunes stores only the last downloaded .ipsw file, because iOS device can be officially only updated, or restored to factory settings. Users cannot downgrade iOS to older versions, however all versions of IPSW images are unofficially available to download on iOS fan Internet servers.

IPSW file location in Microsoft Windows:

Users<UserName>AppDataRoamingApple ComputeriTunes<iOS device> Software Updates

IPSW file location in macOS:

Users/<UserName>/Library/iTunes/<iOS device> Software Updates/

The ipsw file is also need if users want to jailbreak their iOS device. Special iOS hacking tools, such as PwnageTools and redsn0w customize the IPSW file with jailbreak that allows users access to tweaks, 3rd party application installers (Cydia), the root directory and the file system. This customized IPSW can be also installed via iTunes.

If you want to select ipsw file manually in iTunes use:

iTunes for Windows:

Hold Shift key and click the Restore button on Device Summary window.

iTunes for Mac:

Hold Alt key and click the Restore button on Device Summary window.

Updated: February 5, 2020

The default software associated to open ipsw file:

Company or developer:
Apple, Inc.

A digital media application for playing and organizing digital music and video files. Also is used to manage Apple portable devices such as iPod, iPhone and iPad. iTunes has integrated iTunes Store service, where can users buy and download digital music, videos, applications for iOS devices, audiobooks, podcasts, ringtones etc. iTunes is distributed as a free software.

Company or developer:
Apple, Inc.

Apple iTunes is multimedia application distributed with Apple macOS operating system. It organizes and plays digital music and videos. iTunes is also used to manage Apple's portable devices, such as iPod, iPhone and iPad.

Company or developer:
Apple, Inc.

Apple iOS is the latest version of iOS operating system for Apple mobile platform devices such as Apple iPhone, iPad and iPod Touch. iOS is based on XNU hybrid kernel from Mac OS X (macOS).

iOS contains multi-touch interface (also known as SpringBoard GUI), and various default apps, such as Phone, Mail, Safari, Music, Videos, Messages, Photos, Camera, FaceTime, Maps, Weather, Notes, etc. Other apps are available in App Store.

Help how to open:

To install the ipsw firmware update file to iOS device, use Apple iTunes or reds0w utility.
To open ipsw archive, rename IPSW file extension to ZIP. Use compression utility that supports ZIP archive format and use it to extract data from renamed ipsw archive.

How to convert:

Custom Ipsw Files

There is no way how to convert *.ipsw files to other formats.

Find conversions from ipsw file:

Find converter to ipsw file type:

List of software applications associated to the .ipsw file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open ipsw file, edit ipsw file, convert ipsw file, view ipsw file, play ipsw file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting ipsw files.