// TOC FILE

  // HEADER
    8 - Unknown
    548 - Hash? (nulls to fill)
    4 - Unknown
    
    1 - Property ID (1)
    7 - Bundle Header ("bundles")
    1 - null Bundle Header Terminator
    2 - Unknown
    1 - Number of Bundles (1)
    
  // DETAILS DIRECTORY
    // for each file
      2 - Unknown
      
      1 - Property ID (7)
      2 - ID Header ("id")
      1 - null ID Header Terminator
      1 - Filename Length (including Null Terminator)
      X - Filename
      1 - null Filename Terminator
      
      1 - Property ID (9)
      6 - Offset Header ("offset")
      1 - null Offset Header Terminator
      8 - File Offset
      
      1 - Property ID (8)
      4 - Size Header ("size")
      1 - null Offset Header Terminator
      4 - File Length
      
      1 - End of Entry Property ID (0)
      
  // FOOTER
    1 - Property ID (1)
    6 - Chunk Header ("chunks")
    1 - null Chunk Header Terminator
    2 - Number of Chunks (1)
    
    // for each chunk
      1 - Property ID (6)
      3 - CAS Header ("cas")
      1 - null CAS Header Terminator
      1 - Number of Bundle Files (1)
    
      // for each bundle file
        1 - Property ID (7)
        4 - Name Header ("name")
        1 - null Name Header Terminator
        1 - Filename Length (including Null Terminator)
        X - Filename
        1 - null Filename Terminator
    
      1 - Property ID (6)
      21 - Super Bundle Header ("alwaysEmitSuperbundle")
      1 - null Super Bundle Header Terminator
      1 - Boolean Value (0)
    
    1 - End of Chunk Property ID (0)

The TOC file contains the directory, the SB file contains the file data.