Packer for the ros firmware container format
This Python project is the inversion of ros_pack written by Iam-TJ. Unfortunately, his project is not being maintained anymore. The state of the given reverse engineering has not being touched, but ros_packer supports mirroring for copying unknown Bytes.
This project was developed in conjunction with the Fraunhofer FKIE Institute within a firmware security lab.
*.ros-files are commonly used as Firmware-format on routers, switches etc. They are also used as firmware upgrade media and usually carry the whole software on such devices. The structure of a *.ros-file consists of several payloads, that come with headers and subheaders.
ros-packer has two major ways to use:
A: you can define which header version (Version 1 or 2) is being used during the packing process.
B: you can use a ros-file as reference. This auto detects the header version and copies unknown bytes.
- supports two header versions
- copy unknown bytes from a reference container
- take over header version from a reference container
- set output file name
- calculating checksums
- Make sure you have a working Python3.X environment.
- Clone the project
git clone https://gitlab.com/m-rtz/ros-packer
ros_packer.py [-h] [-v] [-o OUTPUT] [-m MIRROR | -V {1,2}] DIR_TO_PACK
- -h: shows this help
- -V: selects the header version (1 or 2). If -m is not used.
- -m: selects a reference container. If -V ist not used.
- -o: selects a file name of the output container.
- -v: shows verbosity messages
ros_packer -m reference_container.ros -o output_container.ros ./Payload_Dir
This creates a new container file named output_container.ros form all payload files in ./Payload_Dir. To determine the header version and copy unknown bytes the reference container reference_container.ros is being read.