YAFFS Extractor

The YAFFS Extractor is a read-only parser for YAFFS2 images used in embedded devices. It reconstructs the directory tree by parsing inodes and data blocks, preserving paths and basic metadata without booting the device. It supports full-image extraction and targeted file selection.
It works by loading the image, choosing the YAFFS variant, iterating directory entries, and building a hierarchical catalog of files with size, timestamps, and permissions. When requested, it dumps file contents and can export to a tarball or a JSON manifest for downstream tooling.
Who benefits: firmware engineers, security researchers, and forensics practitioners who need offline data access, evidence preservation, or firmware analysis. The tool's value lies in deterministic output, simple integration into toolchains, and support for common YAFFS variants without a running device.
Core features and use cases include input handling of image_path, yaffs_version, target_paths, and output of extracted files alongside a manifest; optional checksum verification and multiple export formats enable integration with build pipelines and forensic workflows.