Case study

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.

Targets: Firmware
Category: Community REA investigations
Relationship: Author-reported mixed workflow
Sources reviewed: 2026-11-06

Stars: 0
Last commit: 2026-10-31
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-09

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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.

Cite

BibTeX

@misc{nikond750-case,
  title = {{nikond750: decrypting and mapping Nikon D750 firmware}},
  howpublished = {\url{https://github.com/koshiro/nikond750}},
  url = {https://github.com/koshiro/nikond750},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/nikond750-case/}}
}

Plain text

nikond750: decrypting and mapping Nikon D750 firmware. https://github.com/koshiro/nikond750 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/nikond750-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · koshiro/nikond750 · Revision 1f42606
docs/HALLAZGOS.md GitHub · koshiro/nikond750 · Revision 1f42606
AGENTS.md GitHub · koshiro/nikond750 · Revision 1f42606