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#This script is old and shitty

#!/usr/bin/env python3

#script is modified from https://github.com/Relys/3DS_Multi_Decryptor/blob/master/to3DS/CDNto3DS/CDNto3DS.py

#requires PyCrypto to be installed ("python3 -m ensurepip" then "pip3 install PyCrypto")

#requires makerom (https://github.com/profi200/Project_CTR/releases)

#this is a Python 3 script

import os

import platform

import struct

import errno

import sys

import urllib2

import shlex

import urllib.request, urllib.error, urllib.parse

from subprocess import DEVNULL, STDOUT, call, check_call

from struct import unpack, pack

from subprocess import call

from binascii import hexlify

from binascii import hexlify, unhexlify

from hashlib import sha256

from Crypto.Cipher import AES

##########From http://stackoverflow.com/questions/377017/test-if-executable-exists-in-python/377028#377028

def which(program):

import os

def is_exe(fpath):

return os.path.isfile(fpath) and os.access(fpath, os.X_OK)

fpath, fname = os.path.split(program)

if fpath:

if is_exe(program):

return program

else:

for path in os.environ["PATH"].split(os.pathsep):

path = path.strip('"')

exe_file = os.path.join(path, program)

if is_exe(exe_file):

return exe_file

return None

def mkdir_p(path):

try:

os.makedirs(path)

except OSError as exc: # Python >2.5

if exc.errno == errno.EEXIST and os.path.isdir(path):

pass

else: raise

##########From https://stackoverflow.com/questions/5783517/downloading-progress-bar-urllib2-python

def chunk_report(bytes_so_far, chunk_size, total_size):

percent = float(bytes_so_far) / total_size

percent = round(percent*100, 2)

sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (bytes_so_far, total_size, percent))

sys.stdout.write('\rDownloaded %d of %d bytes (%0.2f%%)' % (bytes_so_far, total_size, percent))

sys.stdout.flush()

if bytes_so_far >= total_size:

sys.stdout.write('\n')

print('\n')

def chunk_read(response, outfname, chunk_size=2*1024*1024, report_hook=None):

fh = open(outfname,'wb')

total_size = response.info().getheader('Content-Length').strip()

total_size = int(response.getheader('Content-Length'))

total_size = int(total_size)

bytes_so_far = 0

data = []

while 1:

if report_hook:

report_hook(bytes_so_far, chunk_size, total_size)

chunk = response.read(chunk_size)

bytes_so_far += len(chunk)

if not chunk:

break

fh.write(chunk)

fh.close()

##########

def SystemUsage():

print 'Usage: CDNto3DS.py TitleID TitleKey [-vers -redown -redec -no3ds -nocia]'

print('Usage: python3 PlaiCDN.py <TitleID TitleKey [-redown -redec -no3ds -nocia] or [-check]> or [-deckey] or [-checkbin]')

print '-vers : version of title to fetch'

print('-deckey : print keys from decTitleKeys.bin')

print '-redown : redownload content'

print('-check : checks if title id matches key')

print '-nodown : don\'t download content, just print links'

print('-checkbin : checks titlekeys from decTitleKeys.bin')

print '-redec : re-attempt content decryption'

print('-redown : redownload content')

print '-no3ds : don\'t build 3DS file'

print('-nodown : don\'t download content, just print links')

print '-nocia : don\'t build CIA file'

print('-redec : re-attempt content decryption')

print('-no3ds : don\'t build 3DS file')

print('-nocia : don\'t build CIA file')

raise SystemExit(0)

#adapted from http://eli.thegreenplace.net/2010/06/25/aes-encryption-of-files-in-python-with-pycrypto

def decrypt_file(in_key, in_filename, out_filename, in_iv, chunksize=24*1024):

with open(in_filename, 'rb') as infile:

iv = unhexlify(in_iv)

key = unhexlify(in_key)

decryptor = AES.new(key, AES.MODE_CBC, iv)

with open(out_filename, 'wb') as outfile:

while True:

chunk = infile.read(chunksize)

if len(chunk) == 0:

break

outfile.write(decryptor.decrypt(chunk))

#from https://github.com/Relys/3DS_Multi_Decryptor/blob/master/ticket-titlekey_stuff/printKeys.py

for i in range(len(sys.argv)):

if sys.argv[i] == '-deckey':

with open('decTitleKeys.bin', 'rb') as fh:

nEntries = os.fstat(fh.fileno()).st_size / 32

fh.seek(16, os.SEEK_SET)

for i in range(int(nEntries)):

fh.seek(8, os.SEEK_CUR)

titleId = fh.read(8)

decryptedTitleKey = fh.read(16)

print('%s: %s' % ((hexlify(titleId)).decode(), (hexlify(decryptedTitleKey)).decode()))

raise SystemExit(0)

for i in range(len(sys.argv)):

if sys.argv[i] == '-checkbin':

with open('decTitleKeys.bin', 'rb') as fh:

nEntries = os.fstat(fh.fileno()).st_size / 32

fh.seek(16, os.SEEK_SET)

print('This option checks 00040000 (game) and 0004008c (dlc) titles only\n')

for i in range(int(nEntries)):

fh.seek(8, os.SEEK_CUR)

titleId = fh.read(8)

decryptedTitleKey = fh.read(16)

baseurl = 'http://nus.cdn.c.shop.nintendowifi.net/ccs/download/' + (hexlify(titleId)).decode()

if (hexlify(titleId)).decode()[:8] != '00040000' and (hexlify(titleId)).decode()[:8] != '0004008c':

continue

else:

try:

tmd = urllib.request.urlopen(baseurl + '/tmd')

except urllib.error.URLError as e:

continue

tmd = tmd.read()

contentCount = unpack('>H', tmd[0x206:0x208])[0]

for i in range(contentCount):

cOffs = 0xB04+(0x30*i)

cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')

# use range requests to download bytes 0 through 271, needed because AES-128-CBC encrypts in chunks of 128 bits

try:

checkReq = urllib.request.Request('%s/%s'%(baseurl, cID))

checkReq.headers['Range'] = 'bytes=%s-%s' % (0, 271)

checkTemp = urllib.request.urlopen(checkReq)

except urllib.error.URLError as e:

continue

# set IV to offset 0xf0 length 0x10 of ciphertext; thanks to yellows8 for the offset

checkTempPerm = checkTemp.read()

checkIv = checkTempPerm[0xf0:0x100]

decryptor = AES.new(decryptedTitleKey, AES.MODE_CBC, checkIv)

# check for magic ('NCCH') at offset 0x100 length 0x104 of the decrypted content

checkTempOut = decryptor.decrypt(checkTempPerm)[0x100:0x104]

if 'NCCH' in checkTempOut.decode('UTF-8', 'ignore'):

print(((hexlify(titleId).decode()) + ': ' + (hexlify(decryptedTitleKey)).decode()))

raise SystemExit(0)

if len(sys.argv) < 3:

SystemUsage()

titleid = sys.argv[1]

titlekey = sys.argv[2]

forceDownload = 0

forceDecrypt = 0

make3ds = 1

makecia = 1

nohash = 0

dlversion = -1

noDownload = 0

noDownloadFile = None

checkKey = 0

checkTempOut = None

for i in xrange(len(sys.argv)) :

for i in range(len(sys.argv)):

if sys.argv[i] == '-redown': forceDownload = 1

elif sys.argv[i] == '-redec': forceDecrypt = 1

elif sys.argv[i] == '-no3ds': makecia = 0

elif sys.argv[i] == '-no3ds': make3ds = 0

elif sys.argv[i] == '-nocia': make3ds = 0

elif sys.argv[i] == '-nocia': makecia = 0

elif sys.argv[i] == '-nodown': noDownload = 1

elif sys.argv[i] == '-vers':

elif sys.argv[i] == '-check': checkKey = 1

i += 1

dlversion = sys.argv[i]

#else : SystemUsage()

if len(titleid) != 16 or len(titlekey) != 32:

print 'Invalid arguments'

print('Invalid arguments')

raise SystemExit(0)

baseurl = 'http://nus.cdn.c.shop.nintendowifi.net/ccs/download/' + titleid

print 'Downloading TMD...'

try:

tmd = urllib2.urlopen(baseurl + '/tmd' + ('.' + str(dlversion), '')[dlversion == -1])

tmd = urllib.request.urlopen(baseurl + '/tmd' + ('.' + str(dlversion), '')[dlversion == -1])

except urllib2.URLError, e:

except urllib.error.URLError as e:

print 'ERROR: Bad title ID?'

print('ERROR: Bad title ID?')

raise SystemExit(0)

tmd = tmd.read()

mkdir_p(titleid + ('_v' + str(dlversion), '')[dlversion == -1])

if checkKey != 1:

open(titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/tmd','wb').write(tmd)

mkdir_p(titleid + ('_v' + str(dlversion), '')[dlversion == -1])

print 'Done\n'

open(titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/tmd','wb').write(tmd)

if tmd[:4] != '\x00\x01\x00\x04':

if bytes('\x00\x01\x00\x04', 'UTF-8') not in tmd[:4]:

print 'Unexpected signature type.'

print('Unexpected signature type.')

raise SystemExit(0)

# If not normal application, don't make 3ds

if titleid[:8] != '00040000':

make3ds = 0

mCiaCmd = 'makerom -f cia -rsf rom.rsf -o ' + titleid + '.cia'

if 'Windows' in platform.system():

mRomCmd = 'makerom -f cci -rsf rom.rsf -nomodtid -o ' + titleid + '.3ds'

if os.path.isfile('makerom.exe'):

makerom_command = 'makerom.exe'

else:

makerom_command = which('makerom.exe')

else:

if os.path.isfile('makerom'):

makerom_command = './makerom'

else:

makerom_command = which('makerom')

if makerom_command == None:

print('Could not find makerom!')

raise SystemExit(0)

# Set Proper CommonKey ID

if unpack('>H', tmd[0x18e:0x190])[0] & 0x10 == 0x10 :

if unpack('>H', tmd[0x18e:0x190])[0] & 0x10 == 0x10:

mCiaCmd = mCiaCmd + ' -ckeyid 1'

ckeyid = 1

else :

else:

mCiaCmd = mCiaCmd + ' -ckeyid 0'

ckeyid = 0

# Set Proper Version

version = unpack('>H', tmd[0x1dc:0x1de])[0]

mCiaCmd = mCiaCmd + ' -major ' + str((version & 0xfc00) >> 10) + ' -minor ' + str((version & 0x3f0) >> 4) + ' -micro ' + str(version & 0xF)

# Set Save Size

saveSize = (unpack('<I', tmd[0x19a:0x19e])[0])/1024

mCiaCmd = mCiaCmd + ' -DSaveSize=' + str(saveSize)

mRomCmd = mRomCmd + ' -DSaveSize=' + str(saveSize)

# If DLC Set DLC flag

dlcflag = ''

if titleid[:8] == '0004008c':

mCiaCmd = mCiaCmd + ' -dlc'

dlcflag = '-dlc'

contentCount = unpack('>H', tmd[0x206:0x208])[0]

print 'Content count: ' + str(contentCount) + '\n'

# If not normal application, don't make 3ds

if contentCount > 8 :

if contentCount > 8:

make3ds = 0

# If speicifed nodown option, print links to a file.

if noDownload == 1 :

if noDownload == 1:

noDownloadFile = open('CDNLinks.txt', 'a')

noDownloadFile.write("TitleId %s\n"%(titleid))

noDownloadFile.write('TitleId %s\n'%(titleid))

command_cID = []

# Download Contents

fSize = 16*1024

for i in xrange(contentCount):

for i in range(contentCount):

cOffs = 0xB04+(0x30*i)

cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')

cIDX = format(unpack('>H', tmd[cOffs+4:cOffs+6])[0], '04x')

# If not normal application, don't make 3ds

if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8 :

make3ds = 0

cOffs = 0xB04+(0x30*i)

cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')

cIDX = format(unpack('>H', tmd[cOffs+4:cOffs+6])[0], '04x')

cSIZE = format(unpack('>Q', tmd[cOffs+8:cOffs+16])[0], 'd')

cHASH = format(unpack('>32s', tmd[cOffs+16:cOffs+48])[0])

cHASH = tmd[cOffs+16:cOffs+48]

if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8 :

# If not normal application, don't make 3ds

if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8:

make3ds = 0

print 'Content ID: ' + cID

print('Content ID: ' + cID)

print 'Content Index: ' + cIDX

print('Content Index: ' + cIDX)

print 'Content Size: ' + cSIZE

print('Content Size: ' + cSIZE)

print 'Content Hash: ' + hexlify(cHASH)

print('Content Hash: ' + (hexlify(cHASH)).decode())

outfname = titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/' + cID

if checkKey == 1:

print('Downloading and decrypting the first 272 bytes of ' + cID + ' for key check')

# use range requests to download bytes 0 through 271, needed because AES-128-CBC encrypts in chunks of 128 bits

try:

checkReq = urllib.request.Request('%s/%s'%(baseurl, cID))

checkReq.headers['Range'] = 'bytes=%s-%s' % (0, 271)

checkTemp = urllib.request.urlopen(checkReq)

except urllib.error.URLError as e:

print('ERROR: Possibly wrong container?\n')

continue

# set IV to offset 0xf0 length 0x10 of ciphertext; thanks to yellows8 for the offset

checkTempPerm = checkTemp.read()

decryptor = AES.new(unhexlify(titlekey), AES.MODE_CBC, checkTempPerm[0xf0:0x100])

# check for magic ('NCCH') at offset 0x100 length 0x104 of the decrypted content

checkTempOut = decryptor.decrypt(checkTempPerm)[0x100:0x104]

if 'NCCH' not in checkTempOut.decode('UTF-8', 'ignore'):

print('\nERROR: Decryption failed; invalid titlekey')

raise SystemExit(0)

print('Titlekey successfully verified to match title ID ' + titleid)

raise SystemExit(0)

if os.path.exists(outfname) == 0 or forceDownload == 1 or os.path.getsize(outfname) != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:

if noDownload == 0:

response = urllib2.urlopen(baseurl + '/' + cID)

response = urllib.request.urlopen(baseurl + '/' + cID)

chunk_read(response, outfname, report_hook=chunk_report)

#If we redownloaded the content, then decrypting it is implied.

call(["aescbc", outfname, outfname + '.dec', titlekey, cIDX + '0000000000000000000000000000'])

print("Decrypting " + cID + "...")

else :

decrypt_file(titlekey, outfname, outfname + '.dec', cIDX + '0000000000000000000000000000')

print("Content Link: %s\n Target File: %s\n\n" % (baseurl + '/' + cID, outfname))

noDownloadFile.write("%s:%s\n"%(outfname,baseurl+'/'+cID))

else:

print(('Content Link: %s\n Target File: %s\n\n' % (baseurl + '/' + cID, outfname)))

noDownloadFile.write('%s:%s\n'%(outfname,baseurl+'/'+cID))

continue

elif os.path.exists(outfname + '.dec') == 0 or forceDecrypt == 1 or os.path.getsize(outfname + '.dec') != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:

call(["aescbc", outfname, outfname + '.dec', titlekey, cIDX + '0000000000000000000000000000'])

print("Decrypting " + cID + "...")

decrypt_file(titlekey, outfname, outfname + '.dec', cIDX + '0000000000000000000000000000')

with open(outfname + '.dec','rb') as fh:

fh.seek(0, os.SEEK_END)

fhSize = fh.tell()

if fh.tell() != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:

print 'Title size mismatch. Download likely incomplete'

print('Title size mismatch. Download likely incomplete')

print 'Downloaded: ' + format(fh.tell(), 'd')

print('Downloaded: ' + format(fh.tell(), 'd'))

raise SystemExit(0)

fh.seek(0)

hash = sha256()

while fh.tell() != fhSize:

hash.update(fh.read(0x1000000))

print 'checking hash: ' + format(float(fh.tell()*100)/fhSize,'.1f') + '% done\r',

print('Checking Hash: ' + format(float(fh.tell()*100)/fhSize,'.1f') + '% done\r', end=' ')

sha256file = hash.hexdigest()

if sha256file != hexlify(cHASH):

if sha256file != (hexlify(cHASH)).decode():

print 'hash mismatched, Decryption likely failed, wrong key?'

print('hash mismatched, Decryption likely failed, wrong key or file modified?')

print 'got hash: ' + sha256file

print('got hash: ' + sha256file)

raise SystemExit(0)

print('Hash verified successfully.')

fh.seek(0x100)

if fh.read(4) != 'NCCH':

if (fh.read(4)).decode('UTF-8', 'ignore') != 'NCCH':

makecia = 0

make3ds = 0

fh.seek(0x60)

if fh.read(4) != 'WfA\0':

print 'Not NCCH, nor DSiWare, file likely corrupted'

print('Not NCCH, nor DSiWare, file likely corrupted')

raise SystemExit(0)

else:

print 'Not an NCCH container, likely DSiWare'

print('Not an NCCH container, likely DSiWare')

fh.seek(0, os.SEEK_END)

fSize += fh.tell()

print '\n'

mCiaCmd = mCiaCmd + ' -i ' + outfname + '.dec' + ':0x' + cIDX + ':0x' + cID

mRomCmd = mRomCmd + ' -i ' + outfname + '.dec' + ':0x' + cIDX + ':0x' + cID

if noDownload == 1 :

print('\n')

command_cID = command_cID + ['-i', outfname + '.dec' + ':0x' + cIDX + ':0x' + cID]

if noDownload == 1:

noDownloadFile.close()

print "URL links appended to CDNLinks.txt"

print('URL links appended to CDNLinks.txt')

raise SystemExit(0)

#this is _probably_ not needed in most situations

print('\n')

print('The NCCH on eShop games is encrypted and cannot be used')

print('without decryption on a 3DS. To fix this you should copy')

print('all .dec files in the Title ID folder to \'/D9Game/\'')

print('on your SD card, then use the following option in Decrypt9:')

print('\n')

print('\'Game Decryptor Options\' > \'NCCH/NCSD Decryptor\'')

print('\n')

print('Once you have decrypted the files, copy the .dec files from')

print('\'/D9Game/\' back into the Title ID folder, overwriting them.')

print('\n')

input('Press Enter once you have done this...')

# Create RSF File

romrsf = 'Option:\n MediaFootPadding: true\n EnableCrypt: false\nSystemControlInfo:\n SaveDataSize: $(SaveSize)K'

with open('rom.rsf', 'wb') as fh:

fh.write(romrsf)

fh.write(romrsf.encode())

dot3ds_command_array = ([makerom_command, '-f', 'cci', '-rsf', 'rom.rsf', '-nomodtid', '-o', titleid + '.3ds', '-ckeyid', str(ckeyid), '-major', str((version & 0xfc00) >> 10), '-minor', str((version & 0x3f0) >> 4), '-micro', str(version & 0xF), '-DSaveSize=' + str(saveSize), str(dlcflag)] + command_cID)

dotcia_command_array.remove('')

dot3ds_command_array.remove('')

if makecia == 1:

print '\nBuilding ' + titleid + '.cia...'

print('\nBuilding ' + titleid + '.cia...')

#print mCiaCmd

call(dotcia_command_array, stderr=STDOUT)

os.system(mCiaCmd)

if make3ds == 1:

print '\nBuilding ' + titleid + '.3ds...'

print('\nBuilding ' + titleid + '.3ds...')

#print mRomCmd

call(dot3ds_command_array, stderr=STDOUT)

os.system(mRomCmd)

os.remove('rom.rsf')

if not os.path.isfile(titleid + '.cia') and makecia == 1:

print "Something went wrong."

print('Something went wrong.')

raise SystemExit(0)

if not os.path.isfile(titleid + '.3ds') and make3ds == 1:

print "Something went wrong."

print('Something went wrong.')

raise SystemExit(0)

print 'Done!'

print('Done!')

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#This script is old and shitty

import os
import errno
import sys
import urllib2
from struct import unpack, pack
from subprocess import call
from binascii import hexlify
from hashlib import sha256

def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as exc: # Python >2.5
        if exc.errno == errno.EEXIST and os.path.isdir(path):
            pass
        else: raise

##########From https://stackoverflow.com/questions/5783517/downloading-progress-bar-urllib2-python
def chunk_report(bytes_so_far, chunk_size, total_size):
    percent = float(bytes_so_far) / total_size
    percent = round(percent*100, 2)
    sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" % (bytes_so_far, total_size, percent))

if bytes_so_far >= total_size:
        sys.stdout.write('\n')

def chunk_read(response, outfname, chunk_size=2*1024*1024, report_hook=None):
    fh = open(outfname,'wb')
    total_size = response.info().getheader('Content-Length').strip()
    total_size = int(total_size)
    bytes_so_far = 0
    data = []

while 1:
        if report_hook:
            report_hook(bytes_so_far, chunk_size, total_size)

chunk = response.read(chunk_size)
        bytes_so_far += len(chunk)

if not chunk:
             break

fh.write(chunk)

fh.close()
##########

def SystemUsage():
    print 'Usage: CDNto3DS.py TitleID TitleKey [-vers -redown -redec -no3ds -nocia]'
    print '-vers   : version of title to fetch'
    print '-redown : redownload content'
    print '-nodown : don\'t download content, just print links'
    print '-redec  : re-attempt content decryption'
    print '-no3ds  : don\'t build 3DS file'
    print '-nocia  : don\'t build CIA file'
    raise SystemExit(0)

if len(sys.argv) < 3:
    SystemUsage()

titleid = sys.argv[1]
titlekey = sys.argv[2]
forceDownload = 0
forceDecrypt = 0
make3ds = 1
makecia = 1
nohash = 0
dlversion = -1
noDownload = 0
noDownloadFile = None

for i in xrange(len(sys.argv)) :
    if sys.argv[i] == '-redown': forceDownload = 1
    elif sys.argv[i] == '-redec': forceDecrypt = 1
    elif sys.argv[i] == '-no3ds': makecia = 0
    elif sys.argv[i] == '-nocia': make3ds = 0
    elif sys.argv[i] == '-nodown': noDownload = 1
    elif sys.argv[i] == '-vers': 
        i += 1
        dlversion = sys.argv[i]
    #else : SystemUsage()
    
if len(titleid) != 16 or len(titlekey) != 32:
    print 'Invalid arguments'
    raise SystemExit(0)

baseurl = 'http://nus.cdn.c.shop.nintendowifi.net/ccs/download/' + titleid

print 'Downloading TMD...'

try:
    tmd = urllib2.urlopen(baseurl + '/tmd' + ('.' + str(dlversion), '')[dlversion == -1])
except urllib2.URLError, e:
    print 'ERROR: Bad title ID?'
    raise SystemExit(0)

tmd = tmd.read()

mkdir_p(titleid + ('_v' + str(dlversion), '')[dlversion == -1])
open(titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/tmd','wb').write(tmd)
print 'Done\n'

if tmd[:4] != '\x00\x01\x00\x04':
    print 'Unexpected signature type.'
    raise SystemExit(0)

# If not normal application, don't make 3ds
if titleid[:8] != '00040000':
    make3ds = 0

mCiaCmd = 'makerom -f cia -rsf rom.rsf -o ' + titleid + '.cia'
mRomCmd = 'makerom -f cci -rsf rom.rsf -nomodtid -o ' + titleid + '.3ds'

# Set Proper CommonKey ID
if unpack('>H', tmd[0x18e:0x190])[0] & 0x10 == 0x10 :
    mCiaCmd = mCiaCmd + ' -ckeyid 1'
else :
    mCiaCmd = mCiaCmd + ' -ckeyid 0'
    
# Set Proper Version
version = unpack('>H', tmd[0x1dc:0x1de])[0]
mCiaCmd = mCiaCmd + ' -major ' + str((version & 0xfc00) >> 10) + ' -minor ' + str((version & 0x3f0) >> 4) + ' -micro ' + str(version & 0xF)

# Set Save Size
saveSize = (unpack('<I', tmd[0x19a:0x19e])[0])/1024
mCiaCmd = mCiaCmd + ' -DSaveSize=' + str(saveSize)
mRomCmd = mRomCmd + ' -DSaveSize=' + str(saveSize)

# If DLC Set DLC flag
if titleid[:8] == '0004008c':
    mCiaCmd = mCiaCmd + ' -dlc'
    
contentCount = unpack('>H', tmd[0x206:0x208])[0]

print 'Content count: ' + str(contentCount) + '\n'

# If not normal application, don't make 3ds
if contentCount > 8 :
    make3ds = 0

# If speicifed nodown option, print links to a file.
if noDownload == 1 :
    noDownloadFile = open('CDNLinks.txt', 'a')
    noDownloadFile.write("TitleId %s\n"%(titleid))

# Download Contents
fSize = 16*1024
for i in xrange(contentCount):
    cOffs = 0xB04+(0x30*i)
    cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')
    cIDX = format(unpack('>H', tmd[cOffs+4:cOffs+6])[0], '04x')
    
    # If not normal application, don't make 3ds
    if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8 :
        make3ds = 0

cOffs = 0xB04+(0x30*i)
    cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')
    cIDX = format(unpack('>H', tmd[cOffs+4:cOffs+6])[0], '04x')
    cSIZE = format(unpack('>Q', tmd[cOffs+8:cOffs+16])[0], 'd')
    cHASH = format(unpack('>32s', tmd[cOffs+16:cOffs+48])[0])
    if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8 :
        make3ds = 0
    
    print 'Content ID:    ' + cID
    print 'Content Index: ' + cIDX
    print 'Content Size:  ' + cSIZE
    print 'Content Hash:  ' + hexlify(cHASH)

outfname = titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/' + cID
    if os.path.exists(outfname) == 0 or forceDownload == 1 or os.path.getsize(outfname) != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
        if noDownload == 0:
            response = urllib2.urlopen(baseurl + '/' + cID)
            chunk_read(response, outfname, report_hook=chunk_report)
            
            #If we redownloaded the content, then decrypting it is implied.
            call(["aescbc", outfname, outfname + '.dec', titlekey, cIDX + '0000000000000000000000000000'])
        else :
            print("Content Link:  %s\n Target File:  %s\n\n" % (baseurl + '/' + cID, outfname))
            noDownloadFile.write("%s:%s\n"%(outfname,baseurl+'/'+cID))
            continue
    elif os.path.exists(outfname + '.dec') == 0 or forceDecrypt == 1 or os.path.getsize(outfname + '.dec') != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
        call(["aescbc", outfname, outfname + '.dec', titlekey, cIDX + '0000000000000000000000000000'])

with open(outfname + '.dec','rb') as fh:
        fh.seek(0, os.SEEK_END)
        fhSize = fh.tell()
        if fh.tell() != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
            print 'Title size mismatch.  Download likely incomplete'
            print 'Downloaded: ' + format(fh.tell(), 'd')
            raise SystemExit(0)
        fh.seek(0)
        hash = sha256()
        
        while fh.tell() != fhSize:
            hash.update(fh.read(0x1000000))
            print 'checking hash: ' + format(float(fh.tell()*100)/fhSize,'.1f') + '% done\r',
            
        sha256file = hash.hexdigest()
        if sha256file != hexlify(cHASH):
            print 'hash mismatched, Decryption likely failed, wrong key?'
            print 'got hash: ' + sha256file
            raise SystemExit(0)
        fh.seek(0x100)
        if fh.read(4) != 'NCCH':
            makecia = 0
            make3ds = 0
            fh.seek(0x60)
            if fh.read(4) != 'WfA\0':
                print 'Not NCCH, nor DSiWare, file likely corrupted'
                raise SystemExit(0)
            else:
                print 'Not an NCCH container, likely DSiWare'
        fh.seek(0, os.SEEK_END)
        fSize += fh.tell()
        
    print '\n'
    mCiaCmd = mCiaCmd + ' -i ' + outfname + '.dec' + ':0x' + cIDX + ':0x' + cID
    mRomCmd = mRomCmd + ' -i ' + outfname + '.dec' + ':0x' + cIDX + ':0x' + cID

if noDownload == 1 :
    noDownloadFile.close()
    print "URL links appended to CDNLinks.txt"
    raise SystemExit(0)

# Create RSF File
romrsf = 'Option:\n  MediaFootPadding: true\n  EnableCrypt: false\nSystemControlInfo:\n  SaveDataSize: $(SaveSize)K'
with open('rom.rsf', 'wb') as fh:
    fh.write(romrsf)
    
if makecia == 1:
    print '\nBuilding ' + titleid + '.cia...'
    #print mCiaCmd
    os.system(mCiaCmd)

if make3ds == 1:
    print '\nBuilding ' + titleid + '.3ds...'
    #print mRomCmd
    os.system(mRomCmd)
    
os.remove('rom.rsf')

if not os.path.isfile(titleid + '.cia') and makecia == 1:
    print "Something went wrong."
    raise SystemExit(0)

if not os.path.isfile(titleid + '.3ds') and make3ds == 1:
    print "Something went wrong."
    raise SystemExit(0)
    
print 'Done!'

変更されたテキスト

ファイルを開く

#!/usr/bin/env python3

#script is modified from https://github.com/Relys/3DS_Multi_Decryptor/blob/master/to3DS/CDNto3DS/CDNto3DS.py
#requires PyCrypto to be installed ("python3 -m ensurepip" then "pip3 install PyCrypto")
#requires makerom (https://github.com/profi200/Project_CTR/releases)
#this is a Python 3 script

import os
import platform
import struct
import errno
import sys
import shlex
import urllib.request, urllib.error, urllib.parse
from subprocess import DEVNULL, STDOUT, call, check_call
from struct import unpack, pack
from subprocess import call
from binascii import hexlify, unhexlify
from hashlib import sha256
from Crypto.Cipher import AES

##########From http://stackoverflow.com/questions/377017/test-if-executable-exists-in-python/377028#377028
def which(program):
    import os
    def is_exe(fpath):
        return os.path.isfile(fpath) and os.access(fpath, os.X_OK)

fpath, fname = os.path.split(program)
    if fpath:
        if is_exe(program):
            return program
    else:
        for path in os.environ["PATH"].split(os.pathsep):
            path = path.strip('"')
            exe_file = os.path.join(path, program)
            if is_exe(exe_file):
                return exe_file

return None

def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as exc: # Python >2.5
        if exc.errno == errno.EEXIST and os.path.isdir(path):
            pass
        else: raise

##########From https://stackoverflow.com/questions/5783517/downloading-progress-bar-urllib2-python
def chunk_report(bytes_so_far, chunk_size, total_size):
    percent = float(bytes_so_far) / total_size
    percent = round(percent*100, 2)
    sys.stdout.write('\rDownloaded %d of %d bytes (%0.2f%%)' % (bytes_so_far, total_size, percent))
    sys.stdout.flush()

if bytes_so_far >= total_size:
        print('\n')

def chunk_read(response, outfname, chunk_size=2*1024*1024, report_hook=None):
    fh = open(outfname,'wb')
    total_size = int(response.getheader('Content-Length'))
    total_size = int(total_size)
    bytes_so_far = 0
    data = []

while 1:
        if report_hook:
            report_hook(bytes_so_far, chunk_size, total_size)

chunk = response.read(chunk_size)
        bytes_so_far += len(chunk)

if not chunk:
             break

fh.write(chunk)

fh.close()
##########

def SystemUsage():
    print('Usage: python3 PlaiCDN.py <TitleID TitleKey [-redown -redec -no3ds -nocia] or [-check]> or [-deckey] or [-checkbin]')
    print('-deckey   : print keys from decTitleKeys.bin')
    print('-check    : checks if title id matches key')
    print('-checkbin : checks titlekeys from decTitleKeys.bin')
    print('-redown   : redownload content')
    print('-nodown   : don\'t download content, just print links')
    print('-redec    : re-attempt content decryption')
    print('-no3ds    : don\'t build 3DS file')
    print('-nocia    : don\'t build CIA file')
    raise SystemExit(0)

#adapted from http://eli.thegreenplace.net/2010/06/25/aes-encryption-of-files-in-python-with-pycrypto
def decrypt_file(in_key, in_filename, out_filename, in_iv, chunksize=24*1024):
    with open(in_filename, 'rb') as infile:
        iv = unhexlify(in_iv)
        key = unhexlify(in_key)
        decryptor = AES.new(key, AES.MODE_CBC, iv)

with open(out_filename, 'wb') as outfile:
            while True:
                chunk = infile.read(chunksize)
                if len(chunk) == 0:
                    break
                outfile.write(decryptor.decrypt(chunk))

#from https://github.com/Relys/3DS_Multi_Decryptor/blob/master/ticket-titlekey_stuff/printKeys.py
for i in range(len(sys.argv)):
    if sys.argv[i] == '-deckey':
        with open('decTitleKeys.bin', 'rb') as fh:
            nEntries = os.fstat(fh.fileno()).st_size / 32
            fh.seek(16, os.SEEK_SET)
            for i in range(int(nEntries)):
                fh.seek(8, os.SEEK_CUR)
                titleId = fh.read(8)
                decryptedTitleKey = fh.read(16)
                print('%s: %s' % ((hexlify(titleId)).decode(), (hexlify(decryptedTitleKey)).decode()))
        raise SystemExit(0)

for i in range(len(sys.argv)):
    if sys.argv[i] == '-checkbin':
        with open('decTitleKeys.bin', 'rb') as fh:
            nEntries = os.fstat(fh.fileno()).st_size / 32
            fh.seek(16, os.SEEK_SET)
            print('This option checks 00040000 (game) and 0004008c (dlc) titles only\n')
            for i in range(int(nEntries)):
                fh.seek(8, os.SEEK_CUR)
                titleId = fh.read(8)
                decryptedTitleKey = fh.read(16)

baseurl = 'http://nus.cdn.c.shop.nintendowifi.net/ccs/download/' + (hexlify(titleId)).decode()
                if (hexlify(titleId)).decode()[:8] != '00040000' and (hexlify(titleId)).decode()[:8] != '0004008c':
                    continue
                else:
                    try:
                        tmd = urllib.request.urlopen(baseurl + '/tmd')
                    except urllib.error.URLError as e:
                        continue

tmd = tmd.read()
                    contentCount = unpack('>H', tmd[0x206:0x208])[0]
                    for i in range(contentCount):
                        cOffs = 0xB04+(0x30*i)
                        cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')
                        # use range requests to download bytes 0 through 271, needed because AES-128-CBC encrypts in chunks of 128 bits
                        try:
                            checkReq = urllib.request.Request('%s/%s'%(baseurl, cID))
                            checkReq.headers['Range'] = 'bytes=%s-%s' % (0, 271)
                            checkTemp = urllib.request.urlopen(checkReq)
                        except urllib.error.URLError as e:
                            continue

# set IV to offset 0xf0 length 0x10 of ciphertext; thanks to yellows8 for the offset
                    checkTempPerm = checkTemp.read()
                    checkIv = checkTempPerm[0xf0:0x100]
                    decryptor = AES.new(decryptedTitleKey, AES.MODE_CBC, checkIv)

# check for magic ('NCCH') at offset 0x100 length 0x104 of the decrypted content
                    checkTempOut = decryptor.decrypt(checkTempPerm)[0x100:0x104]
                    if 'NCCH' in checkTempOut.decode('UTF-8', 'ignore'):
                        print(((hexlify(titleId).decode()) + ': ' + (hexlify(decryptedTitleKey)).decode()))
            raise SystemExit(0)

if len(sys.argv) < 3:
    SystemUsage()

titleid = sys.argv[1]
titlekey = sys.argv[2]
forceDownload = 0
forceDecrypt = 0
make3ds = 1
makecia = 1
nohash = 0
dlversion = -1
noDownload = 0
noDownloadFile = None
checkKey = 0
checkTempOut = None

for i in range(len(sys.argv)):
    if sys.argv[i] == '-redown': forceDownload = 1
    elif sys.argv[i] == '-redec': forceDecrypt = 1
    elif sys.argv[i] == '-no3ds': make3ds = 0
    elif sys.argv[i] == '-nocia': makecia = 0
    elif sys.argv[i] == '-nodown': noDownload = 1
    elif sys.argv[i] == '-check': checkKey = 1

if len(titleid) != 16 or len(titlekey) != 32:
    print('Invalid arguments')
    raise SystemExit(0)

baseurl = 'http://nus.cdn.c.shop.nintendowifi.net/ccs/download/' + titleid

try:
    tmd = urllib.request.urlopen(baseurl + '/tmd' + ('.' + str(dlversion), '')[dlversion == -1])
except urllib.error.URLError as e:
    print('ERROR: Bad title ID?')
    raise SystemExit(0)

tmd = tmd.read()

if checkKey != 1:
    mkdir_p(titleid + ('_v' + str(dlversion), '')[dlversion == -1])
    open(titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/tmd','wb').write(tmd)

if bytes('\x00\x01\x00\x04', 'UTF-8') not in tmd[:4]:
    print('Unexpected signature type.')
    raise SystemExit(0)

# If not normal application, don't make 3ds
if titleid[:8] != '00040000':
    make3ds = 0

if 'Windows' in platform.system():
    if os.path.isfile('makerom.exe'):
        makerom_command = 'makerom.exe'
    else:
        makerom_command = which('makerom.exe')
else:
    if os.path.isfile('makerom'):
        makerom_command = './makerom'
    else:
        makerom_command = which('makerom')

if makerom_command == None:
    print('Could not find makerom!')
    raise SystemExit(0)

# Set Proper CommonKey ID
if unpack('>H', tmd[0x18e:0x190])[0] & 0x10 == 0x10:
    ckeyid = 1
else:
    ckeyid = 0

# Set Proper Version
version = unpack('>H', tmd[0x1dc:0x1de])[0]

# Set Save Size
saveSize = (unpack('<I', tmd[0x19a:0x19e])[0])/1024

# If DLC Set DLC flag
dlcflag = ''
if titleid[:8] == '0004008c':
    dlcflag = '-dlc'

contentCount = unpack('>H', tmd[0x206:0x208])[0]

# If not normal application, don't make 3ds
if contentCount > 8:
    make3ds = 0

# If speicifed nodown option, print links to a file.
if noDownload == 1:
    noDownloadFile = open('CDNLinks.txt', 'a')
    noDownloadFile.write('TitleId %s\n'%(titleid))

command_cID = []

# Download Contents
fSize = 16*1024
for i in range(contentCount):
    cOffs = 0xB04+(0x30*i)
    cID = format(unpack('>I', tmd[cOffs:cOffs+4])[0], '08x')
    cIDX = format(unpack('>H', tmd[cOffs+4:cOffs+6])[0], '04x')
    cSIZE = format(unpack('>Q', tmd[cOffs+8:cOffs+16])[0], 'd')
    cHASH = tmd[cOffs+16:cOffs+48]
    # If not normal application, don't make 3ds
    if unpack('>H', tmd[cOffs+4:cOffs+6])[0] >= 8:
        make3ds = 0

print('Content ID:    ' + cID)
    print('Content Index: ' + cIDX)
    print('Content Size:  ' + cSIZE)
    print('Content Hash:  ' + (hexlify(cHASH)).decode())

outfname = titleid + ('_v' + str(dlversion), '')[dlversion == -1] + '/' + cID

if checkKey == 1:
        print('Downloading and decrypting the first 272 bytes of ' + cID + ' for key check')
        # use range requests to download bytes 0 through 271, needed because AES-128-CBC encrypts in chunks of 128 bits
        try:
            checkReq = urllib.request.Request('%s/%s'%(baseurl, cID))
            checkReq.headers['Range'] = 'bytes=%s-%s' % (0, 271)
            checkTemp = urllib.request.urlopen(checkReq)
        except urllib.error.URLError as e:
            print('ERROR: Possibly wrong container?\n')
            continue

# set IV to offset 0xf0 length 0x10 of ciphertext; thanks to yellows8 for the offset
        checkTempPerm = checkTemp.read()
        decryptor = AES.new(unhexlify(titlekey), AES.MODE_CBC, checkTempPerm[0xf0:0x100])

# check for magic ('NCCH') at offset 0x100 length 0x104 of the decrypted content
        checkTempOut = decryptor.decrypt(checkTempPerm)[0x100:0x104]

if 'NCCH' not in checkTempOut.decode('UTF-8', 'ignore'):
            print('\nERROR: Decryption failed; invalid titlekey')
            raise SystemExit(0)

print('Titlekey successfully verified to match title ID ' + titleid)
        raise SystemExit(0)

if os.path.exists(outfname) == 0 or forceDownload == 1 or os.path.getsize(outfname) != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
        if noDownload == 0:
            response = urllib.request.urlopen(baseurl + '/' + cID)
            chunk_read(response, outfname, report_hook=chunk_report)

#If we redownloaded the content, then decrypting it is implied.
            print("Decrypting " + cID + "...")
            decrypt_file(titlekey, outfname, outfname + '.dec', cIDX + '0000000000000000000000000000')

else:
            print(('Content Link:  %s\n Target File:  %s\n\n' % (baseurl + '/' + cID, outfname)))
            noDownloadFile.write('%s:%s\n'%(outfname,baseurl+'/'+cID))
            continue
    elif os.path.exists(outfname + '.dec') == 0 or forceDecrypt == 1 or os.path.getsize(outfname + '.dec') != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
        print("Decrypting " + cID + "...")
        decrypt_file(titlekey, outfname, outfname + '.dec', cIDX + '0000000000000000000000000000')

with open(outfname + '.dec','rb') as fh:
        fh.seek(0, os.SEEK_END)
        fhSize = fh.tell()
        if fh.tell() != unpack('>Q', tmd[cOffs+8:cOffs+16])[0]:
            print('Title size mismatch.  Download likely incomplete')
            print('Downloaded: ' + format(fh.tell(), 'd'))
            raise SystemExit(0)
        fh.seek(0)
        hash = sha256()

while fh.tell() != fhSize:
            hash.update(fh.read(0x1000000))
            print('Checking Hash: ' + format(float(fh.tell()*100)/fhSize,'.1f') + '% done\r', end=' ')

sha256file = hash.hexdigest()
        if sha256file != (hexlify(cHASH)).decode():
            print('hash mismatched, Decryption likely failed, wrong key or file modified?')
            print('got hash: ' + sha256file)
            raise SystemExit(0)
        print('Hash verified successfully.')
        fh.seek(0x100)
        if (fh.read(4)).decode('UTF-8', 'ignore') != 'NCCH':
            makecia = 0
            make3ds = 0
            fh.seek(0x60)
            if fh.read(4) != 'WfA\0':
                print('Not NCCH, nor DSiWare, file likely corrupted')
                raise SystemExit(0)
            else:
                print('Not an NCCH container, likely DSiWare')
        fh.seek(0, os.SEEK_END)
        fSize += fh.tell()

print('\n')
    command_cID = command_cID + ['-i', outfname + '.dec' + ':0x' + cIDX + ':0x' + cID]

if noDownload == 1:
    noDownloadFile.close()
    print('URL links appended to CDNLinks.txt')
    raise SystemExit(0)

#this is _probably_ not needed in most situations
print('\n')
print('The NCCH on eShop games is encrypted and cannot be used')
print('without decryption on a 3DS. To fix this you should copy')
print('all .dec files in the Title ID folder to \'/D9Game/\'')
print('on your SD card, then use the following option in Decrypt9:')
print('\n')
print('\'Game Decryptor Options\' > \'NCCH/NCSD Decryptor\'')
print('\n')
print('Once you have decrypted the files, copy the .dec files from')
print('\'/D9Game/\' back into the Title ID folder, overwriting them.')
print('\n')
input('Press Enter once you have done this...')

# Create RSF File
romrsf = 'Option:\n  MediaFootPadding: true\n  EnableCrypt: false\nSystemControlInfo:\n  SaveDataSize: $(SaveSize)K'
with open('rom.rsf', 'wb') as fh:
    fh.write(romrsf.encode())

dotcia_command_array = ([makerom_command, '-f', 'cia', '-rsf', 'rom.rsf', '-o', titleid + '.cia', '-ckeyid', str(ckeyid), '-major', str((version & 0xfc00) >> 10), '-minor', str((version & 0x3f0) >> 4), '-micro', str(version & 0xF), '-DSaveSize=' + str(saveSize), str(dlcflag)] + command_cID)
dot3ds_command_array = ([makerom_command, '-f', 'cci', '-rsf', 'rom.rsf', '-nomodtid', '-o', titleid + '.3ds', '-ckeyid', str(ckeyid), '-major', str((version & 0xfc00) >> 10), '-minor', str((version & 0x3f0) >> 4), '-micro', str(version & 0xF), '-DSaveSize=' + str(saveSize), str(dlcflag)] + command_cID)
dotcia_command_array.remove('')
dot3ds_command_array.remove('')

if makecia == 1:
    print('\nBuilding ' + titleid + '.cia...')
    call(dotcia_command_array, stderr=STDOUT)

if make3ds == 1:
    print('\nBuilding ' + titleid + '.3ds...')
    call(dot3ds_command_array, stderr=STDOUT)

os.remove('rom.rsf')

if not os.path.isfile(titleid + '.cia') and makecia == 1:
    print('Something went wrong.')
    raise SystemExit(0)

if not os.path.isfile(titleid + '.3ds') and make3ds == 1:
    print('Something went wrong.')
    raise SystemExit(0)

print('Done!')