JS Deobfuscation is a Python script that deobfuscates JS code and it's time saver for you

Overview

JS Deobfuscation

JS Deobfuscation is a Python script that deobfuscates JS code and it's time saver for you. Although it may not work with high degrees of obfuscation, it's a pretty nice tool to help you even if it's just a bit. You can see some example in the examples/ folder. This idea came to me when I saw an obfuscated script on GitHub. I reversed it for sure lmao. All these examples are extracted from GitHub. There are some references in the script's header.

Usage

~$ git clone https://github.com/quatrecentquatre-404/js-deobfuscator
~$ cd js-deobfuscator
~$ python3 main.py <source.js>

Patterns

The OSA (obfuscated strings array)

There are some patterns that can be easily exploited using RegExp to deobfuscate a code. First of all, majore of online obfuscator declare an array at the top of the code which contain many strings. During the runtime, the code refers to this array to get some string. By example :

const strings = ["fs"]
const fs = require(strings[0])

Can be seen as

const _0x1e5f=["\x66\x73"],_0x1e6a=require(_0x1e5f[0])

So, first of all, the script tries to get this array to replace references by strings themselves and then it removes the array.

The OSA shuffler (not supported yet)

The OSA shuffler is a function called just after the OSA declaration that shuffle all elements inside. Also, it's called before any reference to it, because after this process, references index aren't same than before. By example :

const strings = ["fs", "./any.json"]
const fs = require(strings[0])
const anyJson = require(strings[1])

Can be seen as

const _0x1e5f=["\x66\x73", "\x2e\x2f\x61\x6e\x79\x2e\x6a\x73\x6f\x6e"];(function(osa, ...){ /* Anonymouse function that shuffles the OSA */})(_0x1e5f, ...);const _0x1e6a=require(_0x1e5f[1]),_0x1e71=require(_0x1e5f[0]);

It's an arbitraty example right there, because the indexes 0 and 1 might not change. But with a huge OSA, it will be shuffled for sure.

Owner
Quatrecentquatre
French programmer : Python, JavaScript, Bash, PHP, HTML / CSS, Assembly Language Intel x86. I also do some reverse enrineering on APIs.
Quatrecentquatre
Advanced Digital Envelope System Using Cryptography Techniques (Encryption & Decryption)

Advanced-Digital-Envelope-System Advanced Digital Envelope System Using Cryptography Encryption Techniques The digital envelope system is the techniqu

NelakurthiSudheer 2 Jan 03, 2022
Linear encryption software programmed with python

Echoder linear encryption software programmed with python How does it work? The text in the text section runs a function with two keys entered keys mu

Emre Orhan 4 Dec 20, 2021
A bot that escrows crypto transactions on Reddit

EscrowBot I NEED BCH TESTNET FOR TESTING. Please send me some BCH testnet if you have some: bchtest:qz5eur3prqyvd8u77m6fzf9z6cruz9q7vq4qvgdnuk Depende

Nathan Lim 10 Nov 10, 2022
A lightweight encryption library in python.

XCrypt About This was initially a project to prove that I could make a strong encryption but I decided to publish it so that the internet peoples coul

Anonymous 8 Sep 10, 2022
Simple BRender SDK KeyGen.

Super Simple BRender KeyGen Simple BRender SDK KeyGen. Info This is just a super simple keygen for the BRender SDK installer coded in python. All test

1 Jan 15, 2022
A Python module to encrypt and decrypt data with AES-128 CFB mode.

cryptocfb A Python module to encrypt and decrypt data with AES-128 CFB mode. This module supports 8/64/128-bit CFB mode. It can encrypt and decrypt la

Quan Lin 2 Sep 23, 2022
A self-contained cryptographic library for Python

PyCryptodome PyCryptodome is a self-contained Python package of low-level cryptographic primitives. It supports Python 2.7, Python 3.4 and newer, and

Helder Eijs 2.2k Jan 08, 2023
Django-based Crypto Portfolio Tracker – keep an eye on Shiba Inu and other Crypto

Crypto Tracker 🐍 📈 – Central Portfolio Tracking Easy asset tracking – at a glance 🚀 Dashboard to centrally monitor current crypto portfolio develop

65 Jan 08, 2023
This is a Sharding Simulator to study blockchain scalability

Sharding Simulator This is a Sharding Simulator to study blockchain scalability. How to run on Ubuntu First make sure you have the header file for Pyt

1 Jan 23, 2022
Stor is a community-driven green cryptocurrency based on a proof of space and time consensus algorithm.

Stor Blockchain Stor is a community-driven green cryptocurrency based on a proof of space and time consensus algorithm. For more information, see our

Stor Network 15 May 18, 2022
Python implementation of a blockchain.

The goal of this project is to explain and to make clearer how is a blockchain structured at the very core. It's not built with the intention to replicate an advanced blockchain like Bitcoin or Ether

Rahul raikwar 5 Jan 28, 2022
Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Tink A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse. Ubuntu

Google 12.9k Jan 05, 2023
SimpleWallet - Simple wallet for Bitcoin

Simple Wallet This is a basic python starter package to be used as a template fo

Mystic 1 Jan 08, 2022
A community effort to bring back Duino-Coin

Duino-Coin-Revived A community effort to bring back Duino-Coin! Along with reviving the cryptocurrency, we will add many improvements to it, including

1 Dec 22, 2021
This python module can analyse cryptocurrency news for any number of coins given and return a sentiment. Can be easily integrated with a Trading bot to keep an eye on the news.

Python script that analyses news headline or body sentiment and returns the overall media sentiment of any given coin. It can take multiple coins an

185 Dec 22, 2022
Algo-burner - Burner account for the Algorand blockchain

algo-burner Burner address for Algorand's blockchain Apparently it was a problem

1 Jan 12, 2022
Generate simple encrypted messages!

Premio's Shift is a very simple text encryption, you can use it to send secret messages to your friends. Table of Content Table of Content How it work

Peterson Adami Candido 3 Aug 06, 2021
A python implementation of our standard object-oriented encryption package, shipped with most apps.

Encryption Manager (python edition) VerseGroup's native encryption manager adapted for python applications. Function Generate new set of private and p

Verse Group LLC 2 Oct 30, 2022
Encrypt your code without a worry. Stark utilizes the base64, hashlib and Crypto lib to encrypt your code which cannot be decrypted with any online tools.

Stark Encrypt your code without a worry. Stark utilizes the base64, hashlib and Crypto lib to encrypt your code which cannot be decrypted with any onl

cliphd 3 Sep 10, 2021
Quant & Systematic Crypto Research Tools

qsec Quant & Systematic Crypto Research Tools --WORK IN PROGRESS-- This repo is a collection of research tools to help in exploring and building sys

Darren Smith 3 Jul 12, 2022