Open-source alternatives to ILSpy

Angr is a binary analysis framework and static analysis tool used for reverse engineering compiled binaries. It serves as a binary decompiler and a lifting platform that translates machine code into a common intermediate representation to enable cross-architecture analysis. The framework integrates a symbolic execution engine and constraint solvers to determine the inputs required to reach specific program states. It also employs untrusted code sandboxing to isolate guest code from the host environment during analysis. Its capabilities cover control flow and data flow analysis, including the

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

This project is a Java bytecode reverse engineering suite that functions as a disassembler, decompiler, and editor for Java class files and Android APK binaries. It provides tools to transform compiled bytecode into assembly instructions or readable source code. The toolset supports Android APK analysis and Java binary patching, allowing for the modification of source code or bytecode and subsequent recompilation into functional binaries. It includes capabilities for removing Java obfuscation and performing malware analysis through the detection of malicious code patterns. The system incorpo

dnSpy is a specialized suite of tools for the reverse engineering of .NET assemblies, functioning as a decompiler, assembly editor, and debugger. It translates compiled intermediate language back into high-level source code and provides an execution environment for stepping through compiled binaries to inspect runtime state without the original source files. The project includes a BAML decompiler that converts binary application markup language into a disassembled format and translates it into extensible markup language for user interface analysis. It also functions as a binary analysis tool

Ghidra is a software reverse engineering suite designed to analyze compiled binaries and reconstruct program logic without access to original source code. It provides an interactive environment for disassembly and decompilation, utilizing a platform-independent intermediate representation to maintain consistency across diverse hardware architectures. The framework supports automated binary analysis through programmatic routines, enabling the investigation of complex code patterns and security indicators. The platform distinguishes itself through a modular architecture that allows for extensiv

This project is a desktop application designed for the reverse engineering and inspection of compiled Java code. It functions as a graphical interface that translates Java bytecode back into readable source code, allowing users to examine the internal logic of class files and archives when original source files are unavailable. The tool provides a structured environment for navigating complex file hierarchies, including nested archives like JAR and WAR files. By maintaining an in-memory representation of loaded classes, it enables rapid searching and cross-referencing of code elements. The ap

pwndbg is a GDB plugin and binary analysis framework designed for reverse engineering, exploit development, and low-level program analysis. It extends the core functionality of the debugger to provide advanced memory inspection and automation tools. The project distinguishes itself with specialized capabilities for heap analysis across glibc, jemalloc, and musl, as well as a comprehensive kernel debugging toolkit for inspecting Linux kernel tasks and slab allocators. It includes an integrated ROP gadget searcher for constructing exploit chains and an LLM-powered debugging assistant that provi

dnSpy is a desktop application designed for the analysis, debugging, and modification of compiled .NET assemblies. It functions as an assembly analysis suite and decompiler, translating binary instruction streams back into readable source code to facilitate reverse engineering when original source files are unavailable. The tool distinguishes itself through an integrated binary patching engine and metadata editor, which allow for the direct modification of executable logic and internal metadata tables. It supports in-process debugging instrumentation, enabling users to inject runtime hooks, s

RetDec is a reverse engineering framework and static binary analysis tool. Its primary purpose is to function as an LLVM-based machine code decompiler that translates binary machine code from multiple architectures into high-level C source code. The system employs a multi-stage lifting pipeline to recover program logic, using an intermediate representation to apply optimizations before emitting source code. It distinguishes itself through the ability to identify compilers and packers, perform executable unpacking, and reconstruct class hierarchies and original program structures. The framewo

Cutter is a binary analysis platform and graphical user interface for the Rizin reverse engineering framework. It provides an environment for analyzing the internal logic and data structures of compiled binaries through integrated disassembly and visualization. The platform supports a containerized deployment model to provide isolated environments for binary analysis, which is used to examine suspicious binaries without risking the host system. It is an extensible security tool that allows for the addition of custom analysis capabilities and visualizers via native plugins and scripts. The to

dex2jar is an Android dex decompiler and reverse engineering tool designed to convert Dalvik executable bytecode into Java class files. It functions as a bytecode converter that transforms compiled Android binaries into a format compatible with standard Java analysis tools. The project facilitates Android app decompilation and Java bytecode recovery by translating executable files into readable structures. This allows for the analysis of application logic and the identification of security vulnerabilities or malicious behavior during Android malware analysis. The tool performs static bytecod

PINCE is a dynamic debugger, instruction tracer, and memory scanner designed for the analysis and manipulation of running processes. It functions as a process memory manipulator and editor, allowing for the identification, modification, and monitoring of values within a target application's active memory. The tool distinguishes itself through memory pointer analysis, tracing addresses and offsets to locate static pointers that lead to dynamic data across different sessions. It also enables the execution of internal functions within a running process by manipulating the instruction pointer and

ScyllaHide is an anti-debugger bypass plugin and reverse engineering tool designed to hide a debugger from a target application. It functions as a user-mode API hooking library and DLL injection framework that prevents programs from detecting and closing themselves when being analyzed. The project enables malware analysis and the study of protected software by neutralizing security defenses. It achieves this by intercepting and modifying system library responses to deceive applications about their execution environment. The utility employs several technical methods to maintain stealth, inclu

Capstone is a multi-architecture disassembly framework and binary translation system. It converts binary machine code into human-readable assembly instructions for a wide variety of hardware instruction set architectures and virtual machines. The framework supports a diverse range of targets, including x86, ARM, RISC-V, and MIPS, as well as virtual machine environments like WebAssembly and the Ethereum Virtual Machine. It functions as an instruction analysis tool capable of extracting granular decomposition data and semantic information from disassembled code. The engine is designed for low-

Disassembly of the Pokémon Gold and Silver 1997 Space World demo

Tools for building and disassembling Pokémon Red and Pokémon Crystal

Disassembly of Pokémon Pinball

Plasma is an interactive disassembler for x86/ARM/MIPS. It can generates indented pseudo-code with colored syntax.

Pokered is a comprehensive suite of tools for the disassembly, debugging, and compilation of Game Boy ROMs. It provides a full disassembly of original game binaries into human-readable assembly source code, alongside a dedicated assembly toolchain for compiling modifications back into playable ROM files. The project includes a specialized ROM debugger for monitoring internal game states and a patching tool used to generate binary patches for applying assembly-level changes. The framework covers a wide range of reverse engineering and modification capabilities, including the analysis of binar

Disassembly of Oracle of Ages and Seasons

Disassembly of FX Hammer by Aleksi Eeben

Disassembly of Pokémon Gold/Silver

Disassembly of Legend of Zelda: Links Awakening DX

Detect-It-Easy is a binary file identifier and analysis toolkit designed to determine file formats, compilers, and packers. It functions as a binary file identifier that utilizes signature matching and heuristic analysis to identify executable and archive formats. The project includes a custom file signature engine and a scriptable rule system for defining and applying detection logic to identify specific binary patterns. It features specialized detectors for Android packages, such as APK and DEX files, and a malware packer detector to identify protections, obfuscators, and virus families. T

Disassembly of "The Jungle Book" for Game Boy from 1994.