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Timothy Redaelli 2016-04-13 19:16:24 +02:00
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.gitignore vendored Normal file
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# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class
# C extensions
*.so
# Distribution / packaging
.Python
env/
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg
# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec
# Installer logs
pip-log.txt
pip-delete-this-directory.txt
# Unit test / coverage reports
htmlcov/
.tox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*,cover
.hypothesis/
# Translations
*.mo
*.pot
# Django stuff:
*.log
# Sphinx documentation
docs/_build/
# PyBuilder
target/
#Ipython Notebook
.ipynb_checkpoints
# My used directories
/tools/
/cia/
/roms/
/xorpads/

581
3ds-to-cia.py Executable file
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#!/usr/bin/env python2
#####
#ncchinfo.bin format
#
#4 bytes = 0xFFFFFFFF Meant to prevent previous versions of padgen from using these new files
#4 bytes ncchinfo.bin version or'd with 0xF0000000, to prevent previous versions of padgen from using these new files
#4 bytes Number of entries
#4 bytes Reserved
#
#entry (168 bytes in size):
# 16 bytes Counter
# 16 bytes KeyY
# 4 bytes Size in MB(rounded up)
# 4 bytes Reserved
# 4 bytes Uses 9x SeedCrypto (0 or 1)
# 4 bytes Uses 7x crypto? (0 or 1)
# 8 bytes Title ID
# 112 bytes Output file name in UTF-8 (format used: "/titleId.CRC32.partitionName.sectionName.xorpad")
#####
import os
import sys
import glob
import struct
from ctypes import *
import zipfile
import tempfile
import shutil
import binascii
import re
import hashlib
import subprocess
import platform
import stat
# pip install colorama
import colorama
# Taked from ncchinfo_gen_exh.py (https://github.com/d0k3/Decrypt9WIP)
mediaUnitSize = 0x200
class ncchHdr(Structure):
_fields_ = [
('signature', c_uint8 * 0x100),
('magic', c_char * 4),
('ncchSize', c_uint32),
('titleId', c_uint8 * 0x8),
('makerCode', c_uint16),
('formatVersion', c_uint8),
('formatVersion2', c_uint8),
('padding0', c_uint32),
('programId', c_uint8 * 0x8),
('padding1', c_uint8 * 0x10),
('logoHash', c_uint8 * 0x20),
('productCode', c_uint8 * 0x10),
('exhdrHash', c_uint8 * 0x20),
('exhdrSize', c_uint32),
('padding2', c_uint32),
('flags', c_uint8 * 0x8),
('plainRegionOffset', c_uint32),
('plainRegionSize', c_uint32),
('logoOffset', c_uint32),
('logoSize', c_uint32),
('exefsOffset', c_uint32),
('exefsSize', c_uint32),
('exefsHashSize', c_uint32),
('padding4', c_uint32),
('romfsOffset', c_uint32),
('romfsSize', c_uint32),
('romfsHashSize', c_uint32),
('padding5', c_uint32),
('exefsHash', c_uint8 * 0x20),
('romfsHash', c_uint8 * 0x20),
]
class ncchSection:
exheader = 1
exefs = 2
romfs = 3
class ncch_offsetsize(Structure):
_fields_ = [
('offset', c_uint32),
('size', c_uint32),
]
class ncsdHdr(Structure):
_fields_ = [
('signature', c_uint8 * 0x100),
('magic', c_char * 4),
('mediaSize', c_uint32),
('titleId', c_uint8 * 0x8),
('padding0', c_uint8 * 0x10),
('offset_sizeTable', ncch_offsetsize * 0x8),
('padding1', c_uint8 * 0x28),
('flags', c_uint8 * 0x8),
('ncchIdTable', c_uint8 * 0x40),
('padding2', c_uint8 * 0x30),
]
ncsdPartitions = [b'Main', b'Manual', b'DownloadPlay', b'Partition4', b'Partition5', b'Partition6', b'Partition7', b'UpdateData']
def reverseCtypeArray(ctypeArray): #Reverses a ctype array and converts it to a hex string.
return ''.join('%02X' % x for x in ctypeArray[::-1])
#Is there a better way to do this?
def ncchinfo_gen(files):
def roundUp(numToRound, multiple): #From http://stackoverflow.com/a/3407254
if (multiple == 0):
return numToRound
remainder = abs(numToRound) % multiple
if (remainder == 0):
return numToRound
if (numToRound < 0):
return -(abs(numToRound) - remainder)
return numToRound + multiple - remainder
def getNcchAesCounter(header, type): #Function based on code from ctrtool's source: https://github.com/Relys/Project_CTR
counter = bytearray(b'\x00' * 16)
if header.formatVersion == 2 or header.formatVersion == 0:
counter[:8] = bytearray(header.titleId[::-1])
counter[8:9] = chr(type)
elif header.formatVersion == 1:
x = 0
if type == ncchSection.exheader:
x = 0x200 #ExHeader is always 0x200 bytes into the NCCH
if type == ncchSection.exefs:
x = header.exefsOffset * mediaUnitSize
if type == ncchSection.romfs:
x = header.romfsOffset * mediaUnitSize
counter[:8] = bytearray(header.titleId)
for i in xrange(4):
counter[12+i] = chr((x>>((3-i)*8)) & 0xFF)
return bytes(counter)
def parseNCSD(fh, crc32):
print 'Parsing NCSD in file "%s":' % os.path.basename(fh.name)
entries = 0
data = ''
fh.seek(0)
header = ncsdHdr()
fh.readinto(header) #Reads header into structure
for i in xrange(len(header.offset_sizeTable)):
if header.offset_sizeTable[i].offset:
result = parseNCCH(fh, crc32, header.offset_sizeTable[i].offset * mediaUnitSize, i, reverseCtypeArray(header.titleId), 0)
entries += result[0]
data = data + result[1]
return [entries, data]
def parseNCCH(fh, crc32, offs=0, idx=0, titleId='', standAlone=1):
tab = ' ' if not standAlone else ' '
if not standAlone:
print ' Parsing %s NCCH' % ncsdPartitions[idx]
else:
print 'Parsing NCCH in file "%s":' % os.path.basename(fh.name)
entries = 0
data = ''
fh.seek(offs)
header = ncchHdr()
fh.readinto(header) #Reads header into structure
if titleId == '':
titleId = reverseCtypeArray(header.titleId)
keyY = bytearray(header.signature[:16])
if not standAlone:
print tab + 'NCCH Offset: %08X' % offs
print tab + 'Product code: ' + str(bytearray(header.productCode)).rstrip('\x00')
if not standAlone:
print tab + 'Partition number: %d' % idx
print tab + 'KeyY: %s' % binascii.hexlify(keyY).upper()
print tab + 'Title ID: %s' % reverseCtypeArray(header.titleId)
print tab + 'Format version: %d' % header.formatVersion
fixed_key_flag = 0
ncchFlag7 = bytearray(header.flags)[7]
if ncchFlag7 == 0x1:
fixed_key_flag = ncchFlag7
print tab + 'Uses fixed crypto key'
print ''
if header.exhdrSize:
data = data + parseNCCHSection(header, ncchSection.exheader, 0, fixed_key_flag, 1, tab)
data = data + genOutName(titleId, crc32, ncsdPartitions[idx], b'exheader')
entries += 1
print ''
print ''
return [entries, data]
def parseNCCHSection(header, type, ncchFlag3, ncchFlag7, doPrint, tab):
if type == ncchSection.exheader:
sectionName = 'ExHeader'
offset = 0x200 #Always 0x200
sectionSize = header.exhdrSize
elif type == ncchSection.exefs:
sectionName = 'ExeFS'
offset = header.exefsOffset * mediaUnitSize
sectionSize = header.exefsSize * mediaUnitSize
elif type == ncchSection.romfs:
sectionName = 'RomFS'
offset = header.romfsOffset * mediaUnitSize
sectionSize = header.romfsSize * mediaUnitSize
else:
print 'Invalid NCCH section type was somehow passed in. :/'
sys.exit()
counter = getNcchAesCounter(header, type)
keyY = bytearray(header.signature[:16])
titleId = struct.unpack('<Q',(bytearray(header.programId[:8])))[0]
sectionMb = roundUp(sectionSize, 1024*1024) / (1024*1024)
if sectionMb == 0:
sectionMb = 1 #Should never happen, but meh.
if doPrint:
print tab + '%s offset: %08X' % (sectionName, offset)
print tab + '%s counter: %s' % (sectionName, binascii.hexlify(counter))
print tab + '%s bytes: %d' % (sectionName, sectionSize)
print tab + '%s Megabytes(rounded up): %d' % (sectionName, sectionMb)
return struct.pack('<16s16sIIIIQ', str(counter), str(keyY), sectionMb, 0, ncchFlag7, ncchFlag3, titleId)
def genOutName(titleId, crc32, partitionName, sectionName):
outName = b'/%s.%08lx.%s.%s.xorpad' % (titleId, crc32, partitionName, sectionName)
if len(outName) > 112:
print "Output file name too large. This shouldn't happen."
sys.exit()
return outName + (b'\x00'*(112-len(outName))) #Pad out so whole entry is 160 bytes (48 bytes are set before filename)
print ''
entries = 0
data = ''
for file in files:
result = []
filename, crc32 = file
with open(filename,'rb') as fh:
fh.seek(0x100)
magic = fh.read(4)
if magic == b'NCSD':
result = parseNCSD(fh, crc32)
print ''
elif magic == b'NCCH':
result = parseNCCH(fh, crc32)
print ''
if result:
entries += result[0]
data = data + result[1]
with open('ncchinfo.bin', 'wb') as fh:
fh.write(struct.pack('<IIII', 0xFFFFFFFF, 0xF0000004, entries, 0))
fh.write(data)
print 'Done!'
# Apply a xorpad
def xor(bytes, xorpad):
if len(bytes) > len(xorpad):
raise Exception("xorpad is too small")
result = b""
for x in range(len(bytes)):
result += struct.pack("B", bytes[x] ^ xorpad[x])
return bytearray(result)
# Calculate the sha256 of a string
def sha256(s):
h = hashlib.sha256()
h.update(s)
return h.digest()
# Verify is the xorpad is the correct one
def verify_xorpad(filename, xorpad_file):
with open(filename, "rb") as fh:
offset = 0
fh.seek(0x100)
magic = fh.read(4)
if magic == b'NCSD':
fh.seek(0)
header = ncsdHdr()
fh.readinto(header) #Reads header into structure
for i in xrange(len(header.offset_sizeTable)):
if header.offset_sizeTable[i].offset:
offset = header.offset_sizeTable[i].offset * \
mediaUnitSize
break
xorpad = bytearray(open(xorpad_file, "rb").read(0x400))
# get exheader
fh.seek(offset + 0x200)
exheader = bytearray(fh.read(0x400))
# decrypt exheader
exheader = xor(exheader, xorpad)
# verify exheader sha256sum
fh.seek(offset + 0x160)
orig_sha256 = fh.read(0x20)
return sha256(exheader) == orig_sha256
# Set SD flag in exheader and updates SHA256 in CXI
def fix_cxi(filename, xorpad_file):
f = open(filename, "r+b")
xorpad = bytearray(open(xorpad_file, "rb").read(0x400))
# get exheader
f.seek(0x200)
exheader = bytearray(f.read(0x400))
# decrypt exheader
exheader = xor(exheader, xorpad)
# set sd flag in exheader
exh_flags = exheader[0xD]
exh_flags = exh_flags | 2
exheader = exheader[:0xD] + struct.pack("B", exh_flags) + exheader[0xE:]
# write back modified exheader
f.seek(0x200)
f.write(xor(exheader, xorpad))
# reset the hash
f.seek(0x160)
f.write(sha256(exheader))
# Fix save data size in CIA
def fix_cia(file, xorpad_file):
f = open(file, "r+b")
xorpad = bytearray(open(xorpad_file, "rb").read(0x400))
def roundup(x, y):
x = int(x)
y = int(y)
m = x % y
return x if m == 0 else (x - m + y)
# first locate cxi & exheader in the cia file
header_size = struct.unpack('<I', f.read(4))[0]
f.seek(0x08)
cert_size = struct.unpack('<I', f.read(4))[0]
f.seek(0x0C)
ticket_size = struct.unpack('<I', f.read(4))[0]
f.seek(0x10)
tmd_size = struct.unpack('<I', f.read(4))[0]
cxi_ofs = roundup(header_size, 0x40) + roundup(cert_size, 0x40) + roundup(ticket_size, 0x40) + roundup(tmd_size, 0x40)
exh_ofs = cxi_ofs + 0x200
# extract exheader
f.seek(exh_ofs, 0)
exheader = bytearray(f.read(0x400))
# decrypt exheader
exheader = xor(exheader, xorpad)
# locate save data size in tmd
tmd_ofs = roundup(header_size, 0x40) + roundup(cert_size, 0x40) + roundup(ticket_size, 0x40)
f.seek(tmd_ofs)
tmd_sig_type = struct.unpack('>I', f.read(4))[0]
if tmd_sig_type == 0x010000:
tmd_hdr_ofs = tmd_ofs + 0x240
elif tmd_sig_type == 0x010001:
tmd_hdr_ofs = tmd_ofs + 0x140
elif tmd_sig_type == 0x010002:
tmd_hdr_ofs = tmd_ofs + 0x80
elif tmd_sig_type == 0x010003:
tmd_hdr_ofs = tmd_ofs + 0x240
elif tmd_sig_type == 0x010004:
tmd_hdr_ofs = tmd_ofs + 0x140
elif tmd_sig_type == 0x010005:
tmd_hdr_ofs = tmd_ofs + 0x80
else:
print("HURP?")
# fix save data size
save_data_size = exheader[0x1C0:0x1C4]
f.seek(tmd_hdr_ofs + 0x5A)
f.write(save_data_size)
def get_titleid(filename):
with open(filename, "rb") as fh:
header = ncsdHdr()
fh.readinto(header) #Reads header into structure
return reverseCtypeArray(header.titleId)
def find_xorpad(titleid, crc32):
expectedname = "%s.%08lx.Main.exheader.xorpad" % (titleid, crc32)
legacyname = titleid + ".Main.exheader.xorpad"
xorpads = glob.glob(os.path.join("xorpads", "*.[xX][oO][rR][pP][aA][dD]"))
xorpads += glob.glob(os.path.join("xorpads", "*.[zZ][iI][pP]"))
for xorpad in xorpads:
if zipfile.is_zipfile(xorpad):
with zipfile.ZipFile(xorpad, "r") as e:
for entry in e.infolist():
filename = os.path.join(tmpdir, expectedname)
basename = os.path.basename(entry.filename)
if basename.lower() == expectedname.lower():
source = e.open(entry, "r")
target = file(filename, "wb")
with source, target:
shutil.copyfileobj(source, target)
return filename
else:
basename = os.path.basename(xorpad)
if basename.lower() == expectedname.lower() or \
basename.lower() == legacyname.lower():
return xorpad
def convert_to_cia(filename, crc32):
titleid = get_titleid(filename)
xorpad = find_xorpad(titleid, crc32)
tools_path = get_tools_path()
if verify_xorpad(filename, xorpad) == False:
print "Xorpad file is not valid."
return False
# Extract cxi and cfa
subprocess.call([os.path.join(tools_path, "rom_tool"), "--extract=" + tmpdir, filename])
# Remove any update data
for x in glob.iglob(os.path.join(tmpdir, "*_UPDATEDATA.[cC][fF][aA]")):
os.remove(x)
# Fix cxi
fix_cxi(glob.glob(os.path.join(tmpdir, "*_APPDATA.cxi"))[0], xorpad)
# Generate CIA file
contents = glob.glob(os.path.join(tmpdir, "*.[cC][xX][iI]"))
contents += glob.glob(os.path.join(tmpdir, "*.[cC][fF][aA]"))
# Generate makerom command line
cmdline = []
i = 0
for content in contents:
cmdline += ["-content", content + ":" + str(i) + ":" + str(i)]
i += 1
ciafilename = os.path.join("cia", os.path.splitext(os.path.basename(filename))[0]) + ".cia"
# Generate CIA file
subprocess.call([os.path.join(tools_path, "makerom"), "-v", "-f", "cia", "-o", ciafilename] + cmdline)
fix_cia(ciafilename, xorpad)
for content in contents:
os.remove(content)
def get_tools_path():
is_64 = platform.machine().endswith("64")
if not is_64:
print colorama.Fore.RED + "Sorry, 32 bit OSes are not supported yet."
print colorama.Style.RESET_ALL
sys.exit(1)
if getattr(sys, 'frozen', False):
# we are running in a bundle
bundle_dir = sys._MEIPASS
else:
# we are running in a normal Python environment
bundle_dir = os.path.dirname(os.path.abspath(__file__))
if sys.platform == "win32":
return os.path.join(bundle_dir, "tools", "win64")
elif sys.platform == "linux" or sys.platform == "linux2":
return os.path.join(bundle_dir, "tools", "linux64")
print colorama.Fore.RED + "Sorry, your OS is not supported yet."
print colorama.Style.RESET_ALL
sys.exit(1)
if __name__ == "__main__":
os.chdir(os.path.dirname(os.path.realpath(sys.argv[0])))
colorama.init()
roms = glob.glob(os.path.join("roms", "*.[3zZ][dDiI][sSpP]"))
tmpdir = tempfile.mkdtemp()
try:
if roms == []:
print "No valid files in rom directory found."
sys.exit(1)
print colorama.Fore.GREEN + "Work in progress... Please wait..."
print colorama.Style.RESET_ALL
check = True
while True:
missing_xorpads = []
if check:
print colorama.Style.BRIGHT + "Checking for xorpads..."
else:
print colorama.Style.BRIGHT + "Creating CIA..."
print colorama.Style.RESET_ALL
for rom in roms:
if zipfile.is_zipfile(rom):
print rom
with zipfile.ZipFile(rom, "r") as e:
for entry in e.infolist():
basename = os.path.basename(entry.filename)
if not basename or not basename.lower().endswith(".3ds"):
continue
if check:
sys.stdout.write("\t-> " + entry.filename)
else:
print "\t-> " + entry.filename
print ""
crc32 = entry.CRC & 0xFFFFFFFF
filename = os.path.join(tmpdir, basename)
source = e.open(entry, "r")
if check:
with open(filename, "wb") as target:
target.write(e.open(entry, 'r').read(0x10000))
titleid = get_titleid(filename)
if not find_xorpad(titleid, crc32):
print colorama.Fore.RED + " [NOT FOUND]"
missing_xorpads.append([filename, crc32])
else:
os.remove(filename)
print colorama.Fore.GREEN + " [FOUND]"
else:
target = file(filename, "wb")
with source, target:
shutil.copyfileobj(source, target)
convert_to_cia(filename, crc32)
os.remove(filename)
print colorama.Fore.GREEN + "[OK]"
sys.stdout.write(colorama.Style.RESET_ALL)
sys.stdout.flush()
else:
if check:
sys.stdout.write(rom)
else:
print rom
print ""
crc32 = 0
with open(rom, "rb") as fh:
while True:
buf = fh.read(0x10000)
if not buf: break
crc32 = binascii.crc32(buf, crc32)
crc32 = crc32 & 0xFFFFFFFF
if check:
titleid = get_titleid(rom)
if not find_xorpad(titleid, crc32):
print colorama.Fore.RED + " [NOT FOUND]"
missing_xorpads.append([rom, crc32])
else:
print colorama.Fore.GREEN + " [FOUND]"
else:
convert_to_cia(rom, crc32)
print colorama.Fore.GREEN + "[OK]"
sys.stdout.write(colorama.Style.RESET_ALL)
sys.stdout.flush()
print ""
if check == False:
break
if missing_xorpads != []:
ncchinfo_gen(missing_xorpads)
print "Copy ncchinfo.bin to your 3DS and make it generates the required xorpads"
print "Then copy the generated xorpads in the 'xorpads' directory"
print ""
raw_input("Press Enter to continue...")
else:
check = False
finally:
shutil.rmtree(tmpdir)
raw_input("Press Enter to continue...")

339
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
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if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
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These restrictions translate to certain responsibilities for you if you
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For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
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Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
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program proprietary. To prevent this, we have made it clear that any
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The precise terms and conditions for copying, distribution and
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
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How to Apply These Terms to Your New Programs
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{description}
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Gnomovision version 69, Copyright (C) year name of author
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
{signature of Ty Coon}, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# 3ds-to-cia
Just another 3DS to CIA converter for Linux and Windows (64bit)
## Usage
Just unzip the released version, put your roms in the `roms` directory, put the xorpads in the `xorpads` directory and launch 3ds-to-cia
The script will tell you what you need to do.
The resulting CIAs will be found in `cia` directory
## Requirements
If you are not using precompiled (pyinstaller) binaries, you need to find or compile `rom_tool` and `makerom` under Linux or `rom_tool.exe` and `makerom.exe` under Windows.
You need to put the downloaded files in the correct directory `tools/linux64` or `tools/win64`.
You also need to create the correct directories: `cia`, `roms`, `xorpads`.
## Building release
You need to install python2 with pyinstaller and colorama, then:
```
pyinstaller -F 3ds-to-cia.spec
```
in `distro` directory you will find the resulting binary.
Put the binary in a folder with `cia`, `roms` and `xorpads` empty directories, zip it and redistribuite.