This is the specifications for the archive file which is handled by the Game Extractor plugin Archive_GSR_GOLFSTAR.

Endian Order:Little Endian
Compression:Unknown
Encryption:XOR


This format is used by the following Games:
GolfStar *.gsr


This is the format specification information:
 
// ARCHIVE HEADER
  36 - Header ("GolfStar Resource File, Version 1.1" + null)
  4 - Unknown
  4 - Directory Offset
  4 - Directory Length?
  
// FILE DATA
  // for each file
    1 - XOR Value (XOR this value with (byte)12, and this gives the XOR value to use for the rest of the file)
    X - File Data (XOR with the XOR Value, then decompress with Unknown compression type)
    
// DETAILS DIRECTORY
  // XOR with (byte)69 {
    // for each file (260 bytes per entry)
      248 - Filename (null terminated, filled with nulls)
      4 - File Offset
      4 - Compressed File Length
      4 - Decompressed File Length
      }


Game Extractor is able to read files of this type, as well as files from thousands of other games. To give it a try, download Game Extractor (Basic Version) for free, and see what it can do.

For further information on this format, refer to the source code on our GitHub repository.