# EOO: a Nintendo DS Wii-connection utility decompilation

> EOO reconstructs the Nintendo DS Wii connection utility stored in Pokémon Diamond and Pearl. Its ARM7 and ARM9 assembly and C sources build an NDS image identified by SHA-1. Contributor guidance describes replacing extracted assembly with C that compiles to the same instructions.

- Type: Case study
- Targets: App
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/PikalaxALT/eoo>
- Primary source: <https://github.com/PikalaxALT/eoo/blob/b4057d1cc2ec5896b5c2b0ac99cdee8e2fcc6fb5/README.md>
- Catalog page: <https://awesomerea.org/resources/eoo-wii-connection-utility-case/>
- Record JSON: <https://awesomerea.org/resources/eoo-wii-connection-utility-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/eoo-wii-connection-utility-case/index.md)

## Requirements & limits

- **Prerequisites:** The build requires the relevant Metrowerks ARM compiler and Nitro SDK.
- **Prerequisites:** Linux builds require ARM binutils, Wine and development packages.
- **Limits:** The project is converting extracted ARM assembly to matching C.
- **License:** No project-level licence file is shown; tools/scaninc has its own LICENSE file.

## Primary sources

1. <https://github.com/PikalaxALT/eoo/blob/b4057d1cc2ec5896b5c2b0ac99cdee8e2fcc6fb5/README.md>
2. <https://github.com/PikalaxALT/eoo/blob/b4057d1cc2ec5896b5c2b0ac99cdee8e2fcc6fb5/CONTRIBUTING.md>
3. <https://github.com/PikalaxALT/eoo/blob/b4057d1cc2ec5896b5c2b0ac99cdee8e2fcc6fb5/INSTALL.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.