mirror of
https://github.com/grp/Wii.py.git
synced 2025-06-18 23:05:48 -04:00
Reworked all the structure, added decryption (thx bLASty) and apploader parsing, the reading function fail when reading files on more than one block
This commit is contained in:
Giuseppe (LemonBoy)
parent
f6a76782c6
commit
5f839ca19b
196
disc.py
196
disc.py
@ -2,6 +2,7 @@ import os, hashlib, struct, subprocess, fnmatch, shutil, urllib, array
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import wx
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import png
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from title import *
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from Crypto.Cipher import AES
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from Struct import Struct
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@ -9,9 +10,6 @@ from common import *
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class WOD: #WiiOpticalDisc
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def __init__(self, f):
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self.f = f
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class fsentry:
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name = ""
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parent = None
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@ -31,9 +29,185 @@ class WOD: #WiiOpticalDisc
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size = 0
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offset = 0
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class discHeader(Struct):
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__endian__ = Struct.BE
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def __format__(self):
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self.discId = Struct.string(1)
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self.gameCode = Struct.string(2)
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self.region = Struct.string(1)
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self.makerCode = Struct.uint8[2]
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self.h = Struct.uint8
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self.version = Struct.uint8
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self.audioStreaming = Struct.uint8
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self.streamingBufSize = Struct.uint8
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self.unused = Struct.uint8[14]
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self.magic = Struct.uint32
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self.title = Struct.string(64)
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self.hashVerify = Struct.uint8
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self.h3verify = Struct.uint8
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# Many many thanks to Wiipower
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class Apploader(Struct):
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__endian__ = Struct.BE
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def __format__(self):
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self.buildDate = Struct.string(16)
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self.entryPoint = Struct.uint32
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self.size = Struct.uint32
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self.trailingSize = Struct.uint32
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self.padding = Struct.uint8[4]
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def __str__(self):
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ret = ''
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ret += '%s [%s%s%s]\n' % (self.discHdr.title, self.discHdr.discId, self.discHdr.gameCode, self.discHdr.region)
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if self.discHdr.region == 'P':
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ret += 'Region : PAL\n'
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elif self.discHdr.region == 'E':
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ret += 'Region : NTSC\n'
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elif self.discHdr.region == 'J':
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ret += 'Region : JPN\n'
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ret += 'Version 0x%x Maker %i%i Audio streaming %x\n' % (self.discHdr.version, self.discHdr.makerCode[0], self.discHdr.makerCode[1], self.discHdr.audioStreaming)
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ret += 'Hash verify flag 0x%x H3 verify flag : 0x%x\n' % (self.discHdr.hashVerify, self.discHdr.h3verify)
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ret += 'Found %i partitions (table at 0x%x)\n' % (self.partitionCount, self.partsTableOffset)
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ret += 'Found %i channels (table at 0x%x)\n' % (self.channelsCount, self.chansTableOffset)
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ret += 'Partition %i opened (type 0x%x) at 0x%x)\n' % (self.partitionOpen, self.partitionType, self.partitionOffset)
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ret += 'Partition title : %s\n' % self.partitionHdr.title
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ret += 'Partition key %s\n' % hexdump(self.partitionKey)
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ret += 'Tmd at 0x%x\n' % self.tmdOffset
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ret += 'main.dol at 0x%x fst at 0x%x (%xb)\n' % (self.dolOffset, self.fstSize, self.fstOffset)
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ret += 'Apploader built on %s (%x bytes)\n' % (self.appLdr.buildDate, self.appLdr.size + self.appLdr.trailingSize)
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return ret
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def __init__(self, f):
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self.f = f
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self.fp = open(f, 'rb')
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self.discHdr = self.discHeader().unpack(self.fp.read(0x400))
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if self.discHdr.magic != 0x5D1C9EA3:
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raise Exception('Wrong disc magic')
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self.fp.seek(0x40000)
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self.partitionCount = 1 + struct.unpack(">I", self.fp.read(4))[0]
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self.partsTableOffset = struct.unpack(">I", self.fp.read(4))[0] << 2
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self.channelsCount = struct.unpack(">I", self.fp.read(4))[0]
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self.chansTableOffset = struct.unpack(">I", self.fp.read(4))[0] << 2
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self.partitionOpen = -1
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self.partitionOffset = -1
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self.partitionType = -1
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def decryptBlock(self, block):
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if len(block) != 0x8000:
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raise Exception('Block size too big/small')
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blockIV = block[0x3d0:0x3dF + 1]
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print 'IV %s (len %i)\n' % (hexdump(blockIV), len(blockIV))
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blockData = block[0x0400:0x7FFF]
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return Crypto().DecryptData(self.partitionKey, blockIV, blockData, True)
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def openPartition(self, index):
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if index > self.partitionCount:
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raise ValueError('Partition index too big')
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self.partitionOpen = index
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self.partitionOffset = self.partsTableOffset + (8 * self.partitionOpen)
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self.fp.seek(self.partsTableOffset + (8 * self.partitionOpen))
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self.partitionOffset = struct.unpack(">I", self.fp.read(4))[0] << 2
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self.partitionType = struct.unpack(">I", self.fp.read(4))[0]
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self.fp.seek(self.partitionOffset)
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self.tikData = self.fp.read(0x2A4)
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self.partitionKey = Ticket(self.tikData).getTitleKey()
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self.tmdSize = struct.unpack(">I", self.fp.read(4))[0]
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self.tmdOffset = struct.unpack(">I", self.fp.read(4))[0] >> 2
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self.certsSize = struct.unpack(">I", self.fp.read(4))[0]
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self.certsOffset = struct.unpack(">I", self.fp.read(4))[0] >> 2
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self.H3TableOffset = struct.unpack(">I", self.fp.read(4))[0] >> 2
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self.dataOffset = struct.unpack(">I", self.fp.read(4))[0] >> 2
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self.dataSize = struct.unpack(">I", self.fp.read(4))[0] >> 2
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self.dolOffset = 4 * struct.unpack(">I", self.readPartition (0x420, 4))[0]
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self.fstOffset = 4 * struct.unpack(">I", self.readPartition (0x424, 4))[0]
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self.fstSize = 4 * struct.unpack(">I", self.readPartition (0x428, 4))[0]
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self.appLdr = self.Apploader().unpack(self.readPartition (0x2440, 32))
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self.partitionHdr = self.discHeader().unpack(self.readPartition (0x0, 0x400))
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def readPartition(self, offset, size):
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if size > 0x8000:
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pass#raise Exception('To be implemented')
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readBlocks = size / 0x8000
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blockToRead = offset / 0x8000
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blob = ''
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print 'Read at 0x%x for %i bytes' % (offset, size)
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print 'Going to read %i blocks' % readBlocks
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self.fp.seek(self.partitionOffset + 0x20000 + (0x8000 * blockToRead))
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if readBlocks == 0:
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blob += self.decryptBlock(self.fp.read(0x8000))
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else:
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for x in range(readBlocks):
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blob += self.decryptBlock(self.fp.read(0x8000))
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print 'Read from 0x%x to 0x%x' % (offset, offset + size)
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return blob[offset:offset + size]
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def getIsoBootmode(self):
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if self.discHdr.discId == 'R' or self.discHdr.discId == '_':
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return 2
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elif self.discHdr.discId == '0':
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return 1
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def getOpenedPartition(self):
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return self.partitionOpen
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def getOpenedPartitionOffset(self):
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return self.partitionOffset
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def getOpenedPartitionType(self):
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return self.partitionType
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def getPartitionsCount(self):
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return self.partitionCount
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def getChannelsCount(self):
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return self.channelsCount
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def getPartitionCerts(self):
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self.fp.seek(self.partitionOffset + self.certsOffset)
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return self.fp.read(self.certsSize)
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def getPartitionH3Table(self):
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self.fp.seek(self.partitionOffset + self.H3TableOffset)
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return self.fp.read(0x18000)
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def getPartitionTmd(self):
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self.fp.seek(self.partitionOffset + self.tmdOffset)
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return self.fp.read(self.tmdSize)
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def getPartitionTik(self):
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self.fp.seek(self.partitionOffset)
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return self.fp.read(0x2A4)
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def getPartitionApploader(self):
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return self.readPartition (0x2460, self.appLdr.size + self.appLdr.trailingSize)
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def extractPartition(self, index, fn = ""):
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self.fp = open(self.f, "rb")
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if(fn == ""):
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fn = os.path.dirname(self.f) + "/" + os.path.basename(self.f).replace(".", "_") + "_out"
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@ -44,25 +218,11 @@ class WOD: #WiiOpticalDisc
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pass
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os.chdir(fn)
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self.titleid = self.fp.read(4)
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self.publisher = self.fp.read(2)
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self.fp.seek(0x18)
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if(struct.unpack(">I", self.fp.read(4))[0] != 0x5D1C9EA3):
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self.fp.seek(-4, 1)
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raise ValueError("Not a valid Wii Disc (GC not supported)! Magic: %08x" % struct.unpack(">I", self.fp.read(4))[0])
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self.fp.seek(0x40000)
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partitions = struct.unpack(">I", self.fp.read(4))[0]
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parttableoffs = struct.unpack(">I", self.fp.read(4))[0] << 2
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channels = struct.unpack(">I", self.fp.read(4))[0]
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chantableoffs = struct.unpack(">I", self.fp.read(4))[0] << 2
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self.fp.seek(parttableoffs + (8 * index))
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partitionoffs = struct.unpack(">I", self.fp.read(4))[0] << 2
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partitiontype = struct.unpack(">I", self.fp.read(4))[0] #0 is data, 1 is update, 2 is installer
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self.fp.seek(partitionoffs)
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tikdata = self.fp.read(0x2A3)
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