---
id: 3899
title: "Sonicwall Firmware Deep Dive - SWI Firmware Decryption"
source_domain: bishopfox.com
source_url: "https://bishopfox.com/blog/sonicwall-firmware-deep-dive-part-1"
published_at: "2024-12-02 00:00"
tags: ["reverse-engineering", "firmware", "security-research", "sonicwall", "firmware-decryption", "swi-format"]
phying_url: "https://phying.com/item/3899"
lang: en
---

# Sonicwall Firmware Deep Dive - SWI Firmware Decryption

## Summary

First of a three-part series: a walkthrough of decrypting SonicWall's little-documented SWI firmware format used by NSsp 15700 and NSv updates, opening the file system for further SonicOS research.

## Intelligence Metadata

- **Sources:** bishopfox.com
- **Published:** 2024-12-02 00:00
- **Original:** https://bishopfox.com/blog/sonicwall-firmware-deep-dive-part-1
- **Phying News:** https://phying.com/item/3899