An NDS decompiler is a software tool that takes Nintendo DS game files, such as ROMs (Read-Only Memory), and breaks them down into their constituent parts, making it possible to view, modify, and understand the game's internal workings. This process is called decompilation.
: Include logic to identify and name ARM9 sections based on their start addresses, reducing manual reverse-engineering time. Automation & Efficiency Zero-Input Setup
If you want to start your own decompilation journey or are stuck on a specific step, let me know! What or file are you trying to analyze, and what is your primary goal (e.g., romhacking, translating, or fixing a bug)? Share public link nds decompiler
Before diving into decompilers, it is essential to understand what you are actually decompiling. A Nintendo DS game cartridge (or .nds ROM file) is not a single executable. Instead, it is a complex container housing multiple components:
An NDS decompiler is a reverse-engineering tool that takes the compiled binary code (machine language) of a Nintendo DS game and attempts to reconstruct the original source code, usually in . Assembly vs. Decompilation An NDS decompiler is a software tool that
[ .NDS ROM File ] │ ▼ (Step 1: Unpacking via NitroPacker / NDSFactory) [ File System Structure ] ──────► [ Graphic, Audio, Map Assets ] │ ▼ (Step 2: Decompression) [ Decrypted arm9.bin & arm7.bin ] │ ▼ (Step 3: Static Analysis via Ghidra + NTRGhidra) [ Assembly Code / Disassembly ] │ ▼ (Step 4: High-Level Translation) [ Readable C / C++ Source Code ] 1. Unpacking the ROM File System
This draft outlines a technical paper regarding the development and methodology of a Nintendo DS (NDS) decompiler, focusing on the challenges of the ARM9/ARM7 dual-core architecture. Automation & Efficiency Zero-Input Setup If you want
Users can write scripts to automate repetitive tasks, like renaming known SDK functions. 2. IDA Pro / IDA Free
using asset extractors instead of code decompilers.
Distributing decompiled source code that contains proprietary assets, copyrighted text, or intact logic owned by the original publisher (such as Nintendo) violates copyright law. Most successful open-source decompilation projects require users to provide their own legally dumped retail ROM to extract assets during compilation. Conclusion
The "Gold Standard" of NDS decompilation is creating a "Matching Build." This involves writing C code that, when compiled, produces the exact same binary as the original rom.