james-ecd / dmg-cracker

Tool for performing dictionary attacks on DMG mountable disk images on OSX

DMG Cracker

CLI for performing dictionary attacks on encrypted Apple Disk Image files (.dmg)

While this tool offers a solution for accessing encrypted disk images, it is important to note that it is intended for personal use only and should not be used for illegal purposes. The author assumes no responsibility for any misuse of the tool and it is the responsibility of the user to comply with all applicable laws and regulations.

Installation

cargo install dmg-cracker

Upcoming features

• investigate implementing AES decrpytion manually. Current road block being a method of extracting the key generation salt from the dmg file headers
• support for testing different permutations of a given password list
• increase test coverage

Testing / Contributing

Any contributions or issue raising is welcomed. If you wish to contribute then:

1. fork/clone this repo
2. make changes on a branch taken from main
3. submit a pull request against main

Pull requests will be blocked from merging automatically if:

• there are failing tests
• linting rules have been violated.

Updating package

• bump version number in cargo.toml and cargo.lock
• commit version bump
• create new release on github
• cargo publish

dmg-cracker's Issues

attempting to open dmg

Attempting to run the application on an encrypted dmg, receiving the following error:

thread 'main' panicked at /Users/[cleared]/.cargo/registry/src/index.crates.io-6f17d22bba15001f/dmg-cracker-0.1.7/src/lib.rs:18:66:
called Result::unwrap() on an Err value: Os { code: 1, kind: PermissionDenied, message: "Operation not permitted" }
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

thread 'main' panicked at 'chunk size must be non-zero'

I'm receiving this:

thread 'main' panicked at 'chunk size must be non-zero'

note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

Not sure what to do. Help!

No password was found

Hi I'd appreciate some help getting this to run. I already troubleshooted the chunk size non zero issue from another ticket. Now when I run the cmd I get "No password was found". It instantly comes up with this without it even seeming like it tried to crack it. Maybe I am doing the password.txt wrong? I verified that it was a plain text document and I put 4 passwords that I think it could be spaced out like this eg. below.

Example password.txt
Applebees

Mcdonalds

Starbucks

Whataburger

I am running the cmd like this dmg-cracker -p /Users/(myusername)/Documents/crackthis/test-small.txt -d /Users/(myusername)/Documents/crackthis/InsuranceCards.dmg -t 4

Thank you for any help you can give!