Open-source alternatives to Android Crack Tool

JPEX Software is a comprehensive reverse engineering suite for SWF binary files, serving as an ActionScript decompiler and editor. It provides a toolkit for decompiling, analyzing, and modifying the internal structure of compiled Flash content, including the extraction of scripts and media assets. The project is distinguished by its ability to perform direct binary modification, allowing users to edit bytecode and replace embedded resources without reverting to high-level source code. It includes a runtime ActionScript bytecode debugger for variable inspection and call stack analysis, as well

APKLab is an integrated security analysis platform and reverse engineering IDE for Android applications. It provides a unified environment for decompiling binaries into source code, repackaging modified applications into signed installers, and performing comprehensive security analysis. The platform distinguishes itself by combining static and dynamic analysis workflows. It enables the injection of runtime hooks and gadget libraries to monitor application behavior, while providing specialized patching capabilities to intercept and decrypt encrypted network traffic via a proxy. The toolkit co

apk.sh is a mobile application patching framework and reverse engineering tool designed to inject custom instrumentation and logic into compiled Android binaries. It serves as a workflow manager for modifying application packages without requiring access to the original source code. The toolkit focuses on automating the process of injecting the Frida gadget into Android packages, enabling dynamic analysis and function hooking on non-rooted devices. It handles the end-to-end lifecycle of deconstructing, modifying, and resigning binaries to facilitate security research, malware analysis, and be

Xpatch is a collection of specialized utilities designed for modifying and resigning Android application packages to enable rootless hooking and plugin injection. It functions as an APK repackager that allows for the injection of loading logic and the application of new digital signatures to ensure modified binaries can be installed on devices. The project features a rootless hooking tool that inserts plugin loaders into application binaries, enabling runtime modifications without requiring system-level root access. It includes a signature bypass tool to disable internal verification checks,

Fernflower is a Java bytecode decompiler and reverse engineering tool. It transforms compiled Java class files back into human-readable Java source code to reconstruct original program logic and variable names. The tool functions as a command line bytecode processor capable of batch processing Java archives and class files. It specifically handles obfuscated code analysis by renaming ambiguous identifiers and resolving naming conflicts to make the resulting source code easier to follow. The system employs static analysis to convert bytecode to source, utilizing debug information extraction t

pycdc is a reverse engineering toolset that decompiles and disassembles compiled Python bytecode files back into readable source code. It parses .pyc file headers, reconstructs abstract syntax trees from bytecode instructions, and handles version-specific opcodes across Python versions 1.0 through 3.13 with endian-aware binary parsing. The tool recovers numeric constants, string literals, and marshalled Python objects from compiled bytecode, supporting both file-based and in-memory bytecode loading. It provides a human-readable disassembly listing of bytecode instructions alongside full sourc

Release is an Android APK distribution system and build pipeline designed to compile and publish versioned application packages. It functions as a specialized compiler for Android media player applications targeting both mobile and TV devices. The system uses a multi-architecture build tool to generate separate binaries for various CPU instruction sets, such as arm64-v8a and armeabi-v7a, ensuring compatibility across different hardware types. This is achieved through a GitHub Actions pipeline that employs a matrix-based build strategy to execute concurrent compilation jobs. The workflow auto

Signal-Android is an end-to-end encrypted messaging platform designed to ensure that only the sender and recipient can access communication content. The project provides a comprehensive framework for secure, asynchronous message initiation and key agreement, allowing users to establish private channels without requiring simultaneous online presence. It relies on a state machine architecture to manage communication epochs and authentication, ensuring consistent security transitions throughout the messaging lifecycle. The platform distinguishes itself through a hybrid cryptographic approach tha

hashsigs-rs is a Rust cryptography library providing a hash-based signature scheme and a library for generating and verifying one-time digital signatures. It serves as a smart contract signature verifier designed to validate identity and authenticity within on-chain environments. The project implements one-time signature generation and verification to ensure that digital signatures are valid for a single message, preventing key reuse. It supports blockchain authentication workflows and cryptographic identity proofs for validating senders without relying on external servers. The library utili

hashsigs-ts is a TypeScript cryptography library used to generate and verify digital signatures through one-time cryptographic schemes. It functions as a hash-based signature tool that creates secure signatures without relying on asymmetric encryption. The library provides tools for cryptographic identity verification and data integrity validation. It utilizes a one-time signature generation process to ensure that data remains unaltered and that the origin of a message can be proven. The implementation manages raw cryptographic data using typed arrays and employs pure functions to ensure con

Recaf is a suite of specialized tools for assembling, editing, deobfuscating, decompiling, and instrumenting Java bytecode and runtime processes. It provides a coordinated environment for modifying compiled Java class files and analyzing the behavior of Java applications. The project distinguishes itself through a multi-level abstraction layer that allows for editing across different formats and a pluggable framework that routes bytecode through multiple configurable decompilation engines. It includes an embedded scripting engine and plugin architecture to automate repetitive tasks and extend

gdsdecomp is a project recovery suite and game engine reverse engineering toolset. It functions as a bytecode decompiler, binary resource converter, and asset extraction tool designed to reconstruct original directory hierarchies and scripts from compiled binary game assets. The toolset specializes in GDScript bytecode decompilation and compilation, translating compiled bytecode back into human-readable source code or converting source code into executable bytecode for specific engine versions and commit hashes. It includes a game archive patcher to modify project archives by replacing intern

hashsigs-solidity is a cryptographic signature library and security utility for Ethereum smart contracts. It functions as a hash-based signature verifier designed to confirm data origin and integrity within a virtual machine environment. The project focuses on on-chain cryptographic authentication, specifically the verification of one-time signatures to prevent replay attacks. It implements signature validation for Winternitz One-Time Signatures Plus to ensure that data has not been tampered with before it is processed by a contract. The library covers a broad range of cryptographic capabili

python-for-android is a toolchain that compiles Python applications and their dependencies into installable Android APK or AAB packages. It bundles a Python interpreter and standard library into an Android package, enabling Python code to run natively on mobile devices. The project provides a recipe-based build engine that automates dependency resolution, version pinning, and custom compilation steps for Android targets. The system cross-compiles Python and native C-extension libraries for multiple Android CPU architectures, producing separate native binaries for each target and packaging the

electron-builder is a cross-platform build automator and packaging tool for Electron applications. It bundles source code and dependencies into platform-specific installers, portable executables, and app store formats for Windows, macOS, and Linux. The project functions as a distribution pipeline that orchestrates the signing and notarization of binaries to ensure authenticity and bypass security warnings. It also serves as an auto-update orchestrator, preparing application packages and distribution channels to support automatic background software updates. Its capability surface covers the

Reverse engineering and pentesting for Android applications

Tink is a multi-language cryptography library and security toolkit providing secure APIs for data encryption and digital signatures. It functions as a data encryption library and digital signature framework designed to prevent common implementation errors across different platforms and operating systems. The project serves as a cryptographic keyset manager, utilizing JSON for the storage, rotation, and serialization of keys to maintain consistency across various programming languages. It ensures identical cryptographic behavior globally by mapping language-specific libraries to a unified set

jsencrypt is a JavaScript library for performing RSA encryption, decryption, and key generation. It functions as an asymmetric key generator and digital signature provider that executes all cryptographic processing directly in the browser. The library focuses on the use of the PEM standard for importing, exporting, and managing cryptographic keys. It provides the ability to create public and private RSA key pairs of various bit sizes and supports OpenSSL compatible formats. Its capabilities cover the transformation of plaintext into ciphertext and the recovery of original messages using corr

ethers.js is an Ethereum JavaScript library used to interact with the Ethereum blockchain by querying state and sending transactions via JSON-RPC providers. It functions as a smart contract wrapper, a Web3 provider interface, and a system for managing wallets and cryptographic signatures. The project provides a dedicated Ethereum Name Service resolver for translating human-readable names into blockchain addresses through forward and reverse lookup operations. It also includes an implementation for managing private keys and mnemonic phrases to sign digital data and authorize on-chain transacti

This project is an OpenPGP cryptography library designed for encrypting, decrypting, and signing messages according to the OpenPGP standard for secure communication. It functions as an asymmetric encryption toolkit for securing data and managing digital identities through cryptographic operations. The library provides a cryptographic key manager to create and handle the public and private key pairs required for identity operations. It includes a digital signature implementation to ensure message authenticity and data integrity. The system covers a broad range of capabilities, including asymm

de4dot is a .NET deobfuscator and unpacker designed to reverse obfuscation and restore readable code and metadata within .NET assemblies. It functions as a bytecode analyzer that simplifies control flow, strips anti-debugging protections, and extracts original payloads from packed executable wrappers. The project distinguishes itself through a modular deobfuscation pipeline and a sandbox environment used for dynamic string decryption, which executes decryption methods to replace encrypted strings with plain-text values. It can identify specific obfuscation tools through pattern-based binary a

This project is a cross-platform game engine framework and build pipeline designed to produce playable executable binaries for desktop and Android devices. It provides a collection of core libraries for game development, including a native Android build system and a C++ build pipeline. The framework features a specialized bitmap font rendering system that displays stylized typography by mapping character indices to image atlases using coordinate and spacing metadata. It also implements a hardware abstraction layer to decouple application logic from graphics and audio drivers, ensuring portabl

This library provides a collection of low-level mathematical primitives for Curve25519 and Ristretto group operations. It serves as a foundation for building secure cryptographic protocols, offering tools for elliptic curve arithmetic, key exchange, and digital signature generation. The implementation prioritizes side-channel resistance by utilizing constant-time arithmetic logic across all operations, ensuring that secret-dependent timing variations are prevented. It leverages the Rust type system to enforce state validity, making illegal group elements unrepresentable at compile time. To ma

ArchUnit is a Java architecture testing library and automated validator that analyzes compiled bytecode to verify that source code adheres to predefined design rules. It functions as a testing framework that fails builds when the actual code structure violates architectural constraints. The library uses a fluent rule specification to define constraints and employs bytecode analysis to inspect class relationships and package dependencies. This allows for the automated detection of circular dependencies and the enforcement of dependency rules between packages. The tool covers a range of struct

Android Application Identifier for Packers, Protectors, Obfuscators and Oddities - PEiD for Android

Andromeda - Interactive Reverse Engineering Tool for Android Applications

Gnirehtet is a reverse tethering tool that allows Android devices to share a computer's internet connection over USB. It functions as a network relay for TCP and UDP IPv4 traffic using the Android Debug Bridge protocol. The system provides connectivity for Android devices without requiring root access by utilizing a local virtual network interface to intercept traffic. It includes a manager capable of controlling and resetting relay sessions for multiple connected devices from a single server. The tool supports batch connection activation and the management of individual device tunnels. It e