popcap-pak

A library to facilitate the reading of pak files.

Format

The entire file must be xored with 0xf7 before proceeding. The file format appears to be little-endian.

Header 
4 bytes - Magic (Should be [0xc0, 0x4a, 0xc0, 0xba])
4 bytes - Version (Should be all 0) 
loop 
    1 byte - Record Flag (exit loop if 0x80)
    1 byte - File name length (N) 
    N bytes - Filename 
    4 bytes - Filesize (u32)
    4 bytes - Last write time (Microsoft FILETIME struct)
end

Body
for each record
    record.filesize bytes - File data
end

Demo

[https://nathaniel-daniel.github.io/popcap-pak-rs/dist/]