https://github.com/kholia/dedrop

Looking inside the (Drop) box. Security Analysis of Dropbox. Updated WOOT '13 paper and other goodies.
https://github.com/kholia/dedrop

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Looking inside the (Drop) box. Security Analysis of Dropbox. Updated WOOT '13 paper and other goodies.

• Host: GitHub
• URL: https://github.com/kholia/dedrop
• Owner: kholia
• Created: 2013-08-06T11:30:30.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2020-04-24T14:23:29.000Z (over 4 years ago)
• Last Synced: 2024-05-02T01:10:30.302Z (8 months ago)
• Language: C
• Size: 14.6 MB
• Stars: 323
• Watchers: 29
• Forks: 64
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst

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• starred-awesome - dedrop - Looking inside the (Drop) box. Security Analysis of Dropbox. Updated WOOT '13 paper and other goodies. (TeX)

README

        
Looking inside the (Drop) box

=============================

Security Analysis of Dropbox.

Web-based Presentation

======================

- http://www.openwall.com/presentations/WOOT13-Security-Analysis-of-Dropbox/

"Upstream" Resources

====================

- https://www.usenix.org/looking-inside-drop-box

  (includes video now!)

Status

======

We are able to handle Dropbox version 73.4.118 from 29-May-2019.

Reversing Dropbox

=================

0. Note: For handling modern (> late 2018) Dropbox versions use "dedrop-ng" which

   is included in this repository.

   https://github.com/kholia/dedrop/tree/master/src/dedrop-ng

1. Download Dropbox and extract it.

   ::

      $ cd ~

      $ export DROPBOX_VERSION="dropbox-lnx.x86_64-23.4.19"

      $ wget -c "https://www.dropbox.com/download?plat=lnx.x86_64" -O $DROPBOX_VERSION.tar.gz

      $ tar -xzf $DROPBOX_VERSION.tar.gz

2. Build "dedrop". Switch to this repository and do,

   ::

      $ cd src/dedrop

      $ make

      $ cp libdedrop.so ~

3. Use LD_PRELOAD and inject libdedrop.so into Dropbox.

   ::

      $ cd ~

      $ export BLOB_PATH=.dropbox-dist/$DROPBOX_VERSION/dropbox

      $ LD_PRELOAD=`pwd`/libdedrop.so .dropbox-dist/dropboxd

4. De-compile the "fixed" bytecode files.

   ::

      $ uncompyle6 pyc_decrypted/client_api/hashing.pyc

      ...

5. Study the soure-code, find bugs and make Dropbox better!

6. You might need to do ``xhost local:root`` to start Dropbox.

Dependencies (for paper)

========================

* texlive

* texlive-minted

* texlive-texments

* python-pygments

  ::

    yum install texlive texlive-minted python-pygments texlive-texments \

        texlive-ifplatform texlive-endnotes

Credits

=======

* ReflectiveDLLInjection is written by Stephen Fewer

  See https://github.com/stephenfewer/ReflectiveDLLInjection.git

* uncompyle2

  - https://github.com/wibiti/uncompyle2

  - https://github.com/Mysterie/uncompyle2

Resources

=========

* https://github.com/rocky/python-uncompyle6

* https://github.com/MyNameIsMeerkat/pyREtic

TODO

====

* Find alternatives to "tray_login" method since it is going to be patched

  soon. This is now redundant since Dropbox client now uses 2FA properly.

* "While your submission was interesting, there has been other research on

  similar topics. There is nothing wrong with talking about the same topic more

  than once, especially one that has a large impact but if you are expanding on

  a topic, make sure to highlight how you are taking the research to a new

  level. Be clear with the review board about how what you are doing is

  extending the research." <= (apply this feedback to the paper and

  presentation).

* Looking deeper into the (Drop) box.

  - dump bytecode from memory (revive pyREtic).