Convert AFF to BPT

Understanding AFF and BPT file formats

AFF (Advanced Forensic Format) is a file format designed for storing disk images and related metadata, primarily used in digital forensics. It allows for efficient storage, compression, and encryption of forensic disk images, making it a popular choice among forensic investigators.

BPT (Binary Patch Table) is a less common file format, typically used for storing binary patch data or tables that describe changes to be applied to binary files. BPT files are often used in software development or reverse engineering to automate the process of patching binaries.

Why convert AFF to BPT?

Converting an AFF file to a BPT file is a specialized task, usually required when you need to extract specific binary data or changes from a forensic disk image and represent them as a patch table. This process is not standard and may require custom scripting or specialized tools, depending on the data you wish to extract.

How to convert AFF to BPT

There is no direct, one-click converter for AFF to BPT due to the specialized nature of both formats. However, you can follow these general steps:

1. Extract data from AFF: Use forensic tools like FTK Imager or afflib utilities (affcat, affuse) to mount or extract the contents of the AFF file.
2. Identify changes or patches: Analyze the extracted data to determine the binary changes you want to represent in a BPT file. This may involve using hex editors or diff tools.
3. Create the BPT file: Use a binary patch tool such as bsdiff or Hex Workshop to generate a patch table (BPT) from the original and modified binaries.

Recommended software for AFF to BPT conversion

• afflib tools (Linux/Windows): For extracting data from AFF files. Use affcat to export disk images.
• Hex Workshop (Windows): For analyzing binaries and creating patch tables (BPT files).
• bsdiff/bspatch (Cross-platform): For generating binary patch files, which can be adapted to BPT format if needed.

Step-by-step example using afflib and Hex Workshop

1. Extract the disk image from the AFF file using:
   affcat input.aff > output.img
2. Open output.img in Hex Workshop.
3. Make the necessary binary modifications.
4. Use Hex Workshop's Tools → Generate Patch feature to create a BPT file representing the changes.

Conclusion

While there is no direct AFF to BPT converter, you can achieve the conversion by extracting data from the AFF file and using binary patch tools to create a BPT file. afflib and Hex Workshop are the best tools for this workflow.