https://theapplewiki.com/wiki/FTAB_File_Format

ftab.imhex

struct FileEntry {
    char tag[4];
    u32 offset;
    u32 length;
    u32 pad;
};

struct FTAB_Header {
    u32 unk[8];
    char magic[8];
    u32 num_entries;
    u32 zero;
    FileEntry entries[num_entries];
};

FTAB_Header header @ 0;

for (u32 i = 0, i < header.num_entries, i = i + 1) {
    FileEntry entry @ (sizeof(header) + i * sizeof(FileEntry));
}