openwall / openwall/john

Add support for password-protected virtual machines from VMware, Parallels, VirtualBox

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enhancement new format
Dominant language
C
Stars
13.6k
Forks
2.6k
PR merge metrics
No merged PRs in 30d

Description

@thorsheim brought the following on twitter:

AES-CBC 128, but "encryption key is derived with a measly two iterations of a dated MD5 hash function"

Breaking encrypted virtual machines: learn more about recovering VMware, Parallels and VirtualBox passwords using GPU-accelerated distributed attacks (the case of #NVIDIAGeForce 2070 RTX board):
https://blog.elcomsoft.com/2020/10/breaking-encrypted-virtual-machines-recovering-vmware-parallels-and-virtualbox-passwords/

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files, tests, or entry points are named. Start by identifying how John the Ripper represents existing password formats and determine the VMware, Parallels, and VirtualBox input formats and verification behavior that support would require; done means each format can be recognized and tested against known password-protected virtual machines.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
cryptography, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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