# nikond750: decrypting and mapping Nikon D750 firmware

> Nikond750 investigates the Nikon D750 firmware image D750_0115.bin using decryption scripts, CRC checks, module extraction and Ghidra notes. The author reports recovering a three-table XOR scheme, identifying the ARM application and WLAN modules, and tracing a Wi-Fi throughput limit to the BCM43362 hardware; project instructions also include REA tooling.

- Type: Case study
- Targets: Firmware
- Category: Community REA investigations
- Relationship: Author-reported mixed workflow
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/koshiro/nikond750>
- Primary source: <https://github.com/koshiro/nikond750/blob/1f4260693a747b08ae519c497b2ab658b4eb0ae7/README.md>
- Catalog page: <https://awesomerea.org/resources/nikond750-case/>
- Record JSON: <https://awesomerea.org/resources/nikond750-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/nikond750-case/index.md)

## Requirements & limits

- **Prerequisites:** Users supply their own Nikon firmware images; firmware binaries and recovered keys are not included.
- **Prerequisites:** The documented workflow uses Python, Ghidra and a separately obtained nikon-fw-key-tool.
- **Limits:** Further sub-image splitting and update-routine analysis remain open.
- **License:** MIT license for the repository's code and notes.

## Primary sources

1. <https://github.com/koshiro/nikond750/blob/1f4260693a747b08ae519c497b2ab658b4eb0ae7/README.md>
2. <https://github.com/koshiro/nikond750/blob/1f4260693a747b08ae519c497b2ab658b4eb0ae7/docs/HALLAZGOS.md>
3. <https://github.com/koshiro/nikond750/blob/1f4260693a747b08ae519c497b2ab658b4eb0ae7/AGENTS.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.