[原创]发个以前的ithmb解析的代码

原理请
http://bbs.pediy.com/showthread.php?t=187820
代码是python的，只处理到iOS7 ，对于8 和9 没有做处理，也没做分析。如果有童鞋感兴趣可以完善这份代码。如果有任何修改，请在帖子中说明，感谢大家对共享精神的支持。

######################################################################################

#iThmbUnpacker by obaby 

#Unpack the .ithmb file 

#Date:2014.5.15 

#Site:http://www.h4ck.org.cn

######################################################################################

import sys

import os,os.path,platform,struct

def ithmbunpack120(filename):

        i120width=120

        i120height=120

        i120size=i120height*i120width*2

        i120header_data=b'BM'

        i120header_data+=struct.pack('l', i120size+0x36)

        i120header_data+=b'\x00\x00\x00\x00\x36\x00\x00\x00\x28\x00\x00\x00'

        i120header_data+=struct.pack('l', i120width)+struct.pack('l', -i120height)

        i120header_data+=b'\x01\x00\x10\x00\x00\x00\x00\x00'

        i120header_data+=struct.pack('l', i120size)

        i120header_data+=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

        infile =open(filename,'rb')

        bitmapfileno =1

        while True:

                data = infile.read(i120size)

                outfile = open(os.path.dirname(os.path.realpath(__file__))+'/bmp120/'+str(bitmapfileno) +'.bmp','wb+')

                outfile.write(i120header_data)

                outfile.write(data)

                outfile.close

                infile.read(28)

                bitmapfileno = bitmapfileno+1

                if not data:break

def ithmbunpack158(filename):

        width=160

        height=158

        size=height*width*2

        header_data=b'BM'

        header_data+=struct.pack('l', size+0x36)

        header_data+=b'\x00\x00\x00\x00\x36\x00\x00\x00\x28\x00\x00\x00'

        header_data+=struct.pack('l', width)+struct.pack('l', -height)

        header_data+=b'\x01\x00\x10\x00\x00\x00\x00\x00'

        header_data+=struct.pack('l', size)

        header_data+=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

        infile =open(filename,'rb')

        bitmapfileno =1

        while True:

                data = infile.read(size)

                outfile = open(os.path.dirname(os.path.realpath(__file__))+'/bmp158/'+str(bitmapfileno) +'.bmp','wb+')

                outfile.write(header_data)

                outfile.write(data)

                outfile.close

                infile.read(28)

                bitmapfileno = bitmapfileno+1

                if not data:break

def PrintRuler():

        for i in range(0,16):    

            print "%3s" % hex(i) ,    

        print    

        for i in range(0,16):    

            print "%-3s" % "#" ,    

        print

def iOS7ithmb2Pix(ithmb):

        return{

                "3303":22,

                "3309":64,

                "3319":157,

                "4031":120

                }.get(ithmb,110)

######################################################################################

#ithmb type in iOS7:

#               iOS7type Width Height RealWidth RealHeight

#                 3303 [24  22 ]

#                 3309 [64  64]

#                 3319 [160 157]

#                 3141 [160 158 150 150 true true 2],

#                 3041 [80 79 75 75 true true 1],

#                 

#                 4131 [240 240 240 240 false],

#                 4031 [120 120 120 120 false],

#                 4132 [64 64 64 64 false],

#                 4032 [32 32 32 32 false],

#                 

#                 4140 [336 332 304 332 false false 4],

#                 4040 [168 166 152 166 false false 2],

######################################################################################

def ithmbunpack(filename):

        ifilename = os.path.basename(filename)

        if (ifilename.find("x") != -1):

                itmbsize = int(ifilename.split(".")[0].split("x")[0])

        else:

                itmbsize = iOS7ithmb2Pix(ifilename.split(".")[0])

        print ('The bitmap is in resoulation :'+str(itmbsize))

        PrintRuler()

        if itmbsize ==22: #done

                width =24

                height =22

        if itmbsize ==64:

                width =64

                height =64

        if itmbsize ==157: #done 

                width =160

                height =157

        if itmbsize == 32:

                width =32

                height = 32

        if itmbsize == 79:

                width = 80

                height = 79

        if itmbsize == 120:

                width = 120

                height = 120

        if itmbsize == 158:

                width =160

                height = 158

        if itmbsize == 166:

                width = 168

                height = 166

        size=height*width*2

        header_data=b'BM'

        header_data+=struct.pack('l', size+0x36)

        header_data+=b'\x00\x00\x00\x00\x36\x00\x00\x00\x28\x00\x00\x00'

        header_data+=struct.pack('l', width)+struct.pack('l', -height)

        header_data+=b'\x01\x00\x10\x00\x00\x00\x00\x00'

        header_data+=struct.pack('l', size)

        header_data+=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

        infile =open(filename,'rb')

        bitmapfileno =1

        while True:

                data = infile.read(size)

                outfile = open(os.path.dirname(os.path.realpath(__file__))+'/bmp/'+str(bitmapfileno) +'.bmp','wb+')

                outfile.write(header_data)

                outfile.write(data)

                outfile.close

                #infile.read(28) #print the data between the bitmap file

                index= 0

                for f in range (0,28):

                        temp=infile.read(1)    

                        if len(temp) == 0:    

                                break    

                        else:    

                                print "%3s" % temp.encode('hex'),    

                                index=index+1    

                        if index == 16:    

                                index=0    

                                print

                print("\n")

                bitmapfileno = bitmapfileno+1

                if not data:break

        print("\nTotal: " + str(bitmapfileno) +" unpacked!")

def printusage():

        print("================================================================")

        print(sys.argv[0].split("\\")[-1] + " By obaby")

        print("Usage:\n    " +sys.argv[0].split("\\")[-1] + " <.ithmb>")

        print(".ithmb is the file u want to unpacked!")

        print("================================================================")

	pass

if __name__=="__main__":

        if len(sys.argv)>1:

                filename = sys.argv[1]

                print("================================================================")

                print(sys.argv[0].split("\\")[-1] + " By obaby \n")

                print("Start to unpack the file :\n    " + filename)

                ithmbunpack(filename)

                print("================================================================")                

	else:

                printusage()