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Jefferson

JFFS2 filesystem extraction tool

Installation

Follow these steps on Debian based systems (Debian, Ubuntu, Kali, ...) to perform a system-wide installation of jefferon:

git clone https://github.com/sviehb/jefferson.git
cd jefferson
sudo apt update
sudo apt install python3-pip liblzo2-dev
sudo python3 -m pip install -r requirements.txt
sudo python3 setup.py install

Features

  • big-endian and little-endian support with auto-detection
  • zlib, rtime, LZMA, and LZO compression support
  • CRC checks - for now only enforced on hdr_crc
  • extraction of symlinks, directories, files, and device nodes
  • detection/handling of duplicate inode numbers. Occurs if multiple JFFS2 filesystems are found in one file and causes jefferson to treat segments as separate filesystems

Usage

$ jefferson filesystem.img -d outdir