This is the specifications for the archive file which is handled by the Game Extractor plugin Archive_PAK_70.

Endian Order:Little Endian
Compression:none
Encryption:custom


This format is used by the following Games:
Fashion Apprentice *.pak


This is the format specification information:
 
When decrypted {
  // HEADER
    3 - Header (ARC)
    4 - Number of Files
    
  // DETAILS DIRECTORY
    // for each file
      4 - Filename Length
      X - Filename
      4 - File Offset
      4 - File Length
      
  // FILE DATA
    // for each file
      X - File Data
  }


These are the accompanying notes and further information:
 
Encryption on the whole file

uint key = 1180192594;
for each byte of the file {
  currentByte = read 1 byte
  currentByte = currentByte ^ (byte)key;
  key = key*2 | (int)key>>31 & 1;
}


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.