unpack_PRODINFO.py

unpack_PRODINFO.py

# Unpacking PRODINFO.bin [Certs and Keys]
# SocraticBliss (R)
import os, sys

Sections = [['device_cert_ecc_b233',      0x0480, 0x180, 'der'],
            ['ssl_cert',                  0x0AE0, 0x800, 'der'],
            ['gamecard_cert',             0x2440, 0x400, 'der'],
            ['eticket_cert_rsa',          0x2A90, 0x240, 'der'],
            ['amiibo_key',                0x3520, 0x050, 'pem'],
            ['amiibo_cert_ecqv',          0x3580, 0x014, 'der'],
            ['amiibo_cert_ecdsa',         0x35A0, 0x070, 'der'],
            ['amiibo_key_ecqv_bls',       0x3620, 0x040, 'pem'],
            ['amiibo_cert_ecqv_bls',      0x3670, 0x020, 'der'],
            ['amiibo_root_cert_ecqv_bls', 0x36A0, 0x090, 'der'],
            ['device_ext_key_ecc_b233',   0x3770, 0x050, 'pem'],
            ['eticket_ext_key_rsa',       0x3890, 0x240, 'pem'],
            ['ssl_ext_key',               0x3AE0, 0x130, 'pem'],
            ['gamecard_ext_key',          0x3C20, 0x130, 'pem']]

def read_at(fp, off, len):
    fp.seek(off)
    return fp.read(len)

def main(argc, argv):
    if argc != 2:
        print('Usage: %s PRODINFO.bin' % argv[0])
        sys.exit(1)
    try:
        with open(sys.argv[1], 'rb') as PRODINFO:
            for section in Sections:
                try:
                    os.remove('%s.%s' % (section[0], section[3]))
                except OSError:
                    pass

                sec_block = read_at(PRODINFO, section[1], section[2])

                with open('%s.%s' % (section[0], section[3]), 'wb') as out:
                    out.write(sec_block)
                    print('Saved %s.%s' % (section[0], section[3]))
    except:
        print('Failed to open %s!' % argv[1])
        sys.exit(1)
    
    print('Done!')
    sys.exit(0)


if __name__=='__main__':
    main(len(sys.argv), sys.argv)