def print_npdm(self):
for _, sec in enumerate(self.sections):
#print(_)
#print(sec.fs_type)
if sec.is_exefs:
npdm = NPDM(sec.fs.open('main.npdm'))
n = npdm.__str__()
print(n)
return n
def ret_main(self):
for _, sec in enumerate(self.sections):
if sec.is_exefs:
npdm = NPDM(sec.fs.open('main'))
n = npdm.ret
return n
def _parse(self, titlekey=None, verify=False):
raw_header = self._decrypt_header()
self.header = NCAHeader(io.BytesIO(raw_header))
if self.header.magic != b'NCA3':
raise ValueError('Invalid NCA3 magic')
if self.header.crypto_type_2 > self.header.crypto_type:
self.crypto_type = self.header.crypto_type_2
else:
self.crypto_type = self.header.crypto_type
if self.crypto_type > 0:
self.crypto_type -= 1
self.mkey = keys['master_key_%02x' % self.crypto_type]
if titlekey is not None:
#print(hx(titlekey))
self.body_key = titlekey
if self.header.rights_id != 0x10 * b'\0':
self.has_rights_id = True
else:
self.has_rights_id = False
self.kaek = self.kaeks[self.header.kaek_ind]
keyblob = self._decrypt_keyarea(self.header.enc_key_area)
self.key_area = b''.join(keyblob[0x10 * n:0x10 * (n + 1)]
for n in range(4))
elif self.header.rights_id == 0x10 * b'\0':
self.has_rights_id = False
self.kaek = self.kaeks[self.header.kaek_ind]
keyblob = self._decrypt_keyarea(self.header.enc_key_area)
self.key_area = b''.join(keyblob[0x10 * n:0x10 * (n + 1)]
for n in range(4))
self.body_key = self.key_area[0x20:0x30]
#print(hx(keyblob))
#print(hx(self.key_area))
#print(hx(self.body_key))
else:
if self.header.rights_id != 0x10 * b'\0':
self.has_rights_id = True
self.rights_id = int.from_bytes(self.header.rights_id,
byteorder='big')
self.tkek = keys['titlekek_%02x' % self.crypto_type]
if titlekey is not None:
self.enc_tkey = uhx(titlekey)
else:
try:
self.enc_tkey = tkeys['%032x' % self.rights_id]
except KeyError:
self.has_tkey = False
return
self.has_tkey = True
self.body_key = self._decrypt_tkey(self.enc_tkey)
self.sections = []
if verify:
self.is_valid = True
for n, section_header in enumerate(self.header.section_headers):
self.sections.append(
self.SectionInNCA3(self,
section_header,
verify=verify,
ifo=self.ifo))
if verify and not self.sections[n].fs.is_valid:
self.is_valid = False
if verify:
if self.header.sig_key_gen == 0:
mod = int(hx(keys['nca_header_fixed_key_modulus_00']), 16)
else:
mod = int(hx(keys['nca_header_fixed_key_modulus_01']), 16)
if not validate_rsa2048_pss_sig(mod, RSA_PUBLIC_EXPONENT,
raw_header[0x200:0x400],
self.header.rsa_sig_1):
self.is_valid = False
print('[WARN] Invalid fixed key signature')
for sec in self.sections:
if sec.is_exefs:
npdm = NPDM(sec.fs.open('main.npdm'))
mod = int.from_bytes(npdm.acid.rsa_pubk, byteorder='big')
if not validate_rsa2048_pss_sig(mod, RSA_PUBLIC_EXPONENT,
raw_header[0x200:0x400],
self.header.rsa_sig_2):
self.is_valid = False
print('[WARN] Invalid ACID signature')