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vipyrsec-deobfuscator

Installation

# Without argcomplete support
pip install git+https://github.com/vipyrsec/vipyrsec-deobfuscator.git
# With argcomplete support
pip install "vipyr-deobf[argcomplete] @ git+https://github.com/vipyrsec/vipyrsec-deobfuscator.git"

Supported Obfuscation Types

  • Vare
  • FCT (FreeCodingTools)
  • BlankOBF v2
  • Hyperion (Incomplete)
  • PyObfuscate

Usage

py -m vipyr_deobf mal.py
# or
vipyr-deobf mal.py

By default, the deobfuscator will make a 'best attempt' at discerning the obfuscation. If it is unable to detect the obfuscation type, one can be manually supplied with the -t or --type switch.

Multiple obfuscation types and versions can be provided, separated by a comma. For example, vipyr-deobf mal.py -t foov1,foov2,bar will run the deobfuscator with version 1, 2 of foo and version 1 of bar.

The deobfuscator also supports writing an output to a file with the -o or --output switch.

Adding Deobfuscators

If you want to add your own deobfuscators, you can simply add a file to the deobfuscators folder and vipyr-deobf will detect it automatically.

The format is **/deobfuscators/DeobfName/deobfname.py. deobfname should equal DeobfName with all characters lowercased and spaces removed, and versioning is also supported by adding _v(version number) to the file name (if not provided, version defaults to 1). For example,

Foo/foo_v1.py
Eggs Bacon/eggsbacon_v2.py
Eggs Bacon/eggsbacon.py

are all valid, but

Foo/bar.py (different file name)
Foo/barv1.py (no _ before v)

are not.

After you've added your code to the file, add the following lines:

from vipyr_deobf.deobf_base import Deobfuscator, register

blankobf_v2_deobf = Deobfuscator(deobf, format_results, scan)
register(blankobf_v2_deobf)

Look at the type hints for the Deobfuscator class to determine what the three functions should look like and wrap your code into those three functions.