datemangler

Name	datemangler JSON
Version	0.3.0 JSON
	download
home_page
Summary	This script modifies the last four bits of an NTFS timestamp to hide information.
upload_time	2024-03-06 00:11:41
maintainer
docs_url	None
author	Stephan Klein
requires_python	>=3.11
license	Copyright (c) 2015-2024 Stephan Klein Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
keywords	ntfs encryption stenography hidden aes
VCS
bugtrack_url
requirements	No requirements were recorded.
Travis-CI	No Travis.
coveralls test coverage	No coveralls.

# datemangler

This module modifies the last four bits of an NTFS timestamp to hide information.
Data entered is encrypted with AES.

Note: The cryptography settings used in this demo aren't production-ready. They were
mostly chosen to still fit the data into the timestamp bits. Do not rely on this for
anything.

## Installation

Get the latest version with `pip install datemangler`.

### Notes about dependencies

This program requires the `xattr` package to function which will only install if the development files for
`libffi` are installed. Use `sudo apt-get install libffi-dev` on Debian/Ubuntu before installing `xattr` or
this package.

The datemangler module has been tested with Python 3.11.

## Usage

The module comes with a script entrypoint which you can see in use in [test.sh](test.sh).
A Dockerfile has been included in this repository to enable testing on other platforms as well.
Note that the container needs to be run with `--privileged` since it needs to `mount` a dummy NTFS volume.

By default, it will run the tests of this project:
```shell
$ docker run --privileged --rm -it foo
Initializing device with zeroes: 100% - Done.
Creating NTFS volume structures.
mkntfs completed successfully. Have a nice day.
..
----------------------------------------------------------------------
Ran 2 tests in 0.798s

OK
```

If you run it with `--entrypoint ./test.sh`, you will get an interactive shell to play around with:

```shell
$ docker run --privileged --entrypoint ./test.sh --rm -it foo
Initializing device with zeroes: 100% - Done.
Creating NTFS volume structures.
mkntfs completed successfully. Have a nice day.

root@dedb7779c2e8:/app/test# datemangler
usage: datemangler [-h] [-R] [-i INPUT] [-l PAYLOAD_LENGTH] {read,write} path

root@dedb7779c2e8:/app/test# datemangler -i "Hello my friend!" write .
Payload length was 16

root@dedb7779c2e8:/app/test# datemangler -l 16 read .
Hello my friend!

root@6b72ecc409c7:/app/test/test# datemangler -i foo write 0
root@6b72ecc409c7:/app/test/test# datemangler read 0
foo
```

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Stephan Klein