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custominstall: remove titlekey from cifinish.bin, make --boot9 optional

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Ian Burgwin
2019-11-12 00:34:33 -08:00
parent 9798fcb767
commit aa1c9219c6
1 changed files with 14 additions and 17 deletions
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31
custominstall.py
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@@ -12,12 +12,13 @@ from hashlib import sha256
from sys import platform
from tempfile import TemporaryDirectory
from typing import BinaryIO
from events import Events
import subprocess
from events import Events
from pyctr.crypto import CryptoEngine, Keyslot
from pyctr.types.cia import CIAReader, CIASection
from pyctr.types.ncch import NCCHSection
from pyctr.type.cia import CIAReader, CIASection
from pyctr.type.ncch import NCCHSection
from pyctr.util import roundup
# used to run the save3ds_fuse binary next to the script
@@ -262,33 +263,29 @@ class CustomInstall():
b'\0' * 0x2c
]
self.log(title_info_entry_data)
title_info_entries[cia.tmd.title_id] = b''.join(title_info_entry_data)
with cia.open_raw_section(CIASection.Ticket) as t:
ticket_data = t.read()
finalize_entry_data = [
# title id
bytes.fromhex(cia.tmd.title_id)[::-1],
# common key index
ticket_data[0x1F1:0x1F2],
# has seed
cia.contents[0].flags.uses_seed.to_bytes(1, 'little'),
# magic
b'TITLE\0',
# encrypted titlekey
ticket_data[0x1BF:0x1CF],
# title id
bytes.fromhex(cia.tmd.title_id)[::-1],
# has seed
cia.contents[0].flags.uses_seed.to_bytes(1, 'little'),
# padding
b'\0',
# seed, if needed
cia.contents[0].seed if cia.contents[0].flags.uses_seed else (b'\0' * 0x10)
(cia.contents[0].seed if cia.contents[0].flags.uses_seed else (b'\0' * 0x10))
]
finalize_entries.append(b''.join(finalize_entry_data))
with open(join(self.sd, 'cifinish.bin'), 'wb') as o:
# magic, version, title count
o.write(b'CIFINISH' + (1).to_bytes(4, 'little') + len(finalize_entries).to_bytes(4, 'little'))
o.write(b'CIFINISH' + (2).to_bytes(4, 'little') + len(finalize_entries).to_bytes(4, 'little'))
# add each entry to cifinish.bin
for entry in finalize_entries:
@@ -367,7 +364,7 @@ if __name__ == "__main__":
parser = ArgumentParser(description='Manually install a CIA to the SD card for a Nintendo 3DS system.')
parser.add_argument('cia', help='CIA files', nargs='+')
parser.add_argument('-m', '--movable', help='movable.sed file', required=True)
parser.add_argument('-b', '--boot9', help='boot9 file', required=True)
parser.add_argument('-b', '--boot9', help='boot9 file')
parser.add_argument('--sd', help='path to SD root')
parser.add_argument('--skip-contents', help="don't add contents, only add title info entry", action='store_true')
@@ -389,4 +386,4 @@ if __name__ == "__main__":
installer.event.on_log_msg += log_handle
installer.event.update_percentage += percent_handle
installer.start()
installer.start()