BFFextract

Simple Rust program to extract AIX BFF files.

Install

Cargo

To compile it from source you can just install it using cargo install.

cargo install bffextract

Binary download

Each release is available in compiled binary from Github. Linux build is using MUSL toolchain to make it work on older libc versions (e.g. CentOS 7) too.

https://github.com/ponchofiesta/bffextract-rs/releases

Usage

Extract content of BFF file (AIX Backup file format)

Usage: bffextract.exe [OPTIONS] <FILENAME> [FILE_LIST]...

Arguments:
  <FILENAME>      Path to BFF file.
  [FILE_LIST]...  Extract specific source file(s) and folders recursively only.

Options:
  -C, --chdir <CHDIR>  Extract to directory. [default: .]
  -t, --list           List content of BFF archive.
  -v, --verbose        Displays details while extracting.
  -n, --numeric        List numeric user and group IDs.
  -h, --help           Print help
  -V, --version        Print version

Limitations

• Checksum is not verified.
• Owner and Group gets read but actually is not set to extracted files. (But file modes will be set)
• Bad file format may be ignored in some cases.

Credits

Based on:

• https://github.com/terorie/aix-bff-go
• https://github.com/ReFirmLabs/binwalk/blob/cddfede795971045d99422bd7a9676c8803ec5ee/src/binwalk/magic/archives#L226
• https://github.com/jtreml/firmware-mod-kit/blob/master/src/bff