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dump.py
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dump.py
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__author__ = 'CwT'
from idaapi import *
from idautils import *
from idc import *
import struct
import os
import hashlib
Access_Flag = {'public': 1, 'private': 2, 'protected': 4, 'static': 8, 'final': 0x10,
'synchronized': 0x20, 'volatile': 0x40, 'bridge': 0x40, 'transient': 0x80,
'varargs': 0x80, 'native': 0x100, 'interface': 0x200, 'abstract': 0x400,
'strictfp': 0x800, 'synthetic': 0x1000, 'annotation': 0x2000, 'enum': 0x4000,
'constructor': 0x10000, 'declared_synchronized': 0x20000}
TypeDescriptor = {'void': 'V', 'boolean': 'Z', 'byte': 'B', 'short': 'S', 'char': 'C',
'int': 'I', 'long': 'J', 'float': 'F', 'double': 'D', 'boolean[]': '[Z',
'byte[]': '[B', 'short[]': '[S', 'char[]': '[C', 'int[]': 'I',
'long[]': '[J', 'float[]': '[F', 'double[]': 'D'}
ShortyDescriptor = {'void': 'V', 'boolean': 'Z', 'byte': 'B', 'short': 'S', 'char': 'C',
'int': 'I', 'long': 'J', 'float': 'F', 'double': 'D'}
ACSII = {'1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9, '0': 0,
'a': 10, 'b': 11, 'c': 12, 'd': 13, 'e': 14, 'f': 15}
def checksum(f, len):
a = 1
b = 0
f.seek(12)
print("file size is :", len)
for i in range(12, len):
onebyte = struct.unpack("B", f.read(1))[0]
a = (a + onebyte) % 65521
b = (b + a) % 65521
return b << 16 | a
def get_file_sha1(f):
f.seek(32) # skip magic, checksum, sha
sha = hashlib.sha1()
while True:
data = f.read(1024)
if not data:
break
sha.update(data)
return sha.hexdigest()
def getDword(addr):
return Dword(addr)
def getByte(addr):
return Byte(addr)
def getWord(addr):
return Word(addr)
def rightshift(value, n):
mask = 0x80000000
check = value & mask
if check != mask:
return value >> n
else:
submask = mask
for loop in range(0, n):
submask = (submask | (mask >> loop))
strdata = struct.pack("I", submask | (value >> n))
ret = struct.unpack("i", strdata)[0]
return ret
def readunsignedleb128(addr):
res = getByte(addr)
len = 1
if res > 0x7f:
cur = getByte(addr + 1)
res = (res & 0x7f) | ((cur & 0x7f) << 7)
len = 2
if cur > 0x7f:
cur = getByte(addr + 2)
res |= (cur & 0x7f) << 14
len = 3
if cur > 0x7f:
cur = getByte(addr + 3)
res |= (cur & 0x7f) << 21
len = 4
if cur > 0x7f:
cur = getByte(addr + 4)
res |= cur << 28
len = 5
return res, len
def readsignedleb128(addr):
res = getByte(addr)
len = 1
if res <= 0x7f:
res = rightshift((res << 25), 25)
else:
cur = getByte(addr + 1)
res = (res & 0x7f) | ((cur & 0x7f) << 7)
len = 2
if cur <= 0x7f:
res = rightshift((res << 18), 18)
else:
cur = getByte(addr + 2)
res |= (cur & 0x7f) << 14
len = 3
if cur <= 0x7f:
res = rightshift((res << 11), 11)
else:
cur = getByte(addr + 3)
res |= (cur & 0x7f) << 21
len = 4
if cur <= 0x7f:
res = rightshift((res << 4), 4)
else:
cur = getByte(addr + 4)
res |= cur << 28
len = 5
return res, len
def writesignedleb128(num, file):
if num >= 0:
writeunsignedleb128(num, file)
else:
mask = 0x80000000
for i in range(0, 32):
tmp = num & mask
mask >>= 1
if tmp == 0:
break
loop = 32 - i + 1
while loop > 7:
cur = num & 0x7f | 0x80
num >>= 7
file.write(struct.pack("B", cur))
loop -= 7
cur = num & 0x7f
file.write(struct.pack("B", cur))
def signedleb128forlen(num):
if num >= 0:
return unsignedleb128forlen(num)
else:
mask = 0x80000000
for i in range(0, 32):
tmp = num & mask
mask >>= 1
if tmp == 0:
break
loop = 32 - i + 1
if loop % 7 == 0:
return loop / 7
else:
return loop / 7 + 1
def writeunsignedleb128(num, file):
if num <= 0x7f:
file.write(struct.pack("B", num))
else:
cur = num & 0x7F | 0x80
file.write(struct.pack("B", cur))
num >>= 7
if num <= 0x7f:
file.write(struct.pack("B", num))
else:
cur = num & 0x7f | 0x80
file.write(struct.pack("B", cur))
num >>= 7
if num <= 0x7f:
file.write(struct.pack("B", num))
else:
cur = num & 0x7f | 0x80
file.write(struct.pack("B", cur))
num >>= 7
if num <= 0x7f:
file.write(struct.pack("B", num))
else:
cur = num & 0x7f | 0x80
file.write(struct.pack("B", cur))
num >>= 7
file.write(struct.pack("B", num))
def unsignedleb128forlen(num):
len = 1
temp = num
while num > 0x7f:
len += 1
num >>= 7
if len > 5:
print("error for unsignedleb128forlen", temp)
return len
def readunsignedleb128p1(addr):
res, len = readunsignedleb128(addr)
return res - 1, len
def writeunsignedleb128p1(num, file):
writeunsignedleb128(num+1, file)
def unsignedleb128p1forlen(num):
return unsignedleb128forlen(num+1)
def getutf8str(addr):
string = []
while 1:
onebyte = getByte(addr)
addr += 1
if onebyte == 0:
break
string.append(onebyte)
return bytearray(string).decode("utf-8")
def getstr(bytes):
return bytearray(bytes).decode("utf-8")
class DexorJar:
def __init__(self):
self.pfileName = 0
self.isDex = 0
self.okaytoFree = 0 # do not care
self.pRawDexFile = 0
self.pJarFile = 0
self.pDexMemory = 0 # do not care
def dump(self, addr):
self.pfileName = getDword(addr)
self.isDex = getByte(addr + 4)
self.pRawDexFile = getDword(addr + 8)
self.pJarFile = getDword(addr + 12)
def printf(self):
str = ""
baseaddr = self.pfileName
onebyte = getByte(baseaddr)
while onebyte != 0:
str += chr(onebyte)
baseaddr += 1
onebyte = getByte(baseaddr)
print("filename is:", str)
if self.isDex > 0:
print("it's a dex file, addr: ", hex(self.pRawDexFile))
else:
print("it's a jar file, addr: ", hex(self.pJarFile))
class JarFile:
def __init__(self):
self.archive = None # do not care
self.pcacheFileName = 0
self.pDvmDex = 0
def dump(self, addr):
self.pcacheFileName = getDword(addr + 36)
self.pDvmDex = getDword(addr + 40)
def printf(self):
str = ""
baseaddr = self.pcacheFileName
one = getByte(baseaddr)
while one != 0:
str += chr(one)
baseaddr += 1
one = getByte(baseaddr)
print("cache file name is : ", str)
print("DvmDex addr is :", hex(self.pDvmDex))
class DvmDex:
def __init__(self):
self.pDexFile = 0
self.pHeader = 0 # it is a clone of dex file
# just for now
def dump(self, addr):
self.pDexFile = getDword(addr)
self.pHeader = getDword(addr + 4)
def printf(self):
# i wanna see the diff between the pDexFile.dexfile and pheader
print("dexfile addr is: ", hex(self.pDexFile))
print("header addr is: ", hex(self.pHeader))
global baseAddr
class DexFile:
def __init__(self):
self.pOptHeader = 0
self.pHeader = 0
self.pStringIds = 0
self.pTypeIds = 0
self.pFieldIds = 0
self.pMethodIds = 0
self.pProtoIds = 0
self.pClassDefs = 0
self.pLinkData = 0
self.baseAddr = 0
self.dexheader = DexHeader()
self.dexmaplist = DexMapList()
def dump(self, addr):
global baseAddr
self.pOptHeader = getDword(addr)
self.pHeader = getDword(addr + 4)
self.pStringIds = getDword(addr + 8)
self.pTypeIds = getDword(addr + 12)
self.pFieldIds = getDword(addr + 16)
self.pMethodIds = getDword(addr + 20)
self.pProtoIds = getDword(addr + 24)
self.pProtoIds = getDword(addr + 28)
self.pLinkData = getDword(addr + 32)
self.baseAddr = getDword(addr + 44)
baseAddr = self.baseAddr
self.dexheader.dump(self.pHeader)
self.dexmaplist.dump(self.dexheader.mapOff)
self.dexmaplist.dexmapitem[0].item.append(self.dexheader)
print("end build dex and start to get reference")
self.dexmaplist.getreference()
def makeoffset(self):
off = self.dexmaplist.makeoff()
align = off % 4
if align != 0:
off += (4 - align)
self.dexheader.makeoffset(self.dexmaplist.dexmapitem)
self.dexheader.fileSize = off
self.dexheader.dataSize = off - self.dexheader.mapOff
def copytofile(self, filename):
if os.path.exists(filename):
os.remove(filename)
file = open(filename, 'wb+')
file.seek(0, 0)
self.makeoffset()
self.dexmaplist.copy(file)
rest = self.dexheader.fileSize -file.tell()
for i in range(0, rest):
file.write(struct.pack("B", 0))
file_sha = get_file_sha1(file)
tmp = bytes(file_sha)
i = 0
file.seek(12)
while i < 40:
num = (ACSII[tmp[i]] << 4) + ACSII[tmp[i+1]]
file.write(struct.pack("B", num))
i += 2
csum = checksum(file, self.dexheader.fileSize)
print("checksum:", hex(csum), "file size:", self.dexheader.fileSize)
file.seek(8)
file.write(struct.pack("I", csum))
file.close()
def printf(self):
print("dex head addr: ", hex(self.pHeader))
print("dex head addr: ", hex(self.baseAddr))
class DexHeader:
def __init__(self):
self.magic = []
self.checksum = 0
self.signature = []
self.fileSize = 0
self.headerSize = 0
self.endianTag = 0
self.linkSize = 0
self.linkOff = 0
self.mapOff = 0
self.stringIdsSize = 0
self.stringIdsOff = 0
self.typeIdsSize = 0
self.typeIdsOff = 0
self.protoIdsSize = 0
self.protoIdsOff = 0
self.fieldIdsSize = 0
self.fieldIdsOff = 0
self.methodIdsSize = 0
self.methodIdsOff = 0
self.classDefsSize = 0
self.classDefsOff = 0
self.dataSize = 0
self.dataOff = 0
def dump(self, addr):
len = 0
while len < 8:
self.magic.append(getByte(addr + len))
len += 1
self.checksum = getDword(addr + 8)
len = 0
while len < 20:
self.signature.append(getByte(addr + 12 + len))
len += 1
self.fileSize = getDword(addr + 32)
self.headerSize = getDword(addr + 36)
self.endianTag = getDword(addr + 40)
self.linkSize = getDword(addr + 44)
self.linkOff = getDword(addr + 48)
self.mapOff = getDword(addr + 52)
self.stringIdsSize = getDword(addr + 56)
self.stringIdsOff = getDword(addr + 60)
self.typeIdsSize = getDword(addr + 64)
self.typeIdsOff = getDword(addr + 68)
self.protoIdsSize = getDword(addr + 72)
self.protoIdsOff = getDword(addr + 76)
self.fieldIdsSize = getDword(addr + 80)
self.fieldIdsOff = getDword(addr + 88)
self.methodIdsSize = getDword(addr + 92)
self.methodIdsOff = getDword(addr + 96)
self.classDefsSize = getDword(addr + 100)
self.classDefsOff = getDword(addr + 104)
self.dataSize = getDword(addr + 108)
self.dataOff = getDword(addr + 112)
def makeoffset(self, dexmaplist):
self.stringIdsSize = dexmaplist[1].size
self.stringIdsOff = dexmaplist[1].offset
self.typeIdsSize = dexmaplist[2].size
self.typeIdsOff = dexmaplist[2].offset
self.protoIdsSize = dexmaplist[3].size
self.protoIdsOff = dexmaplist[3].offset
self.fieldIdsSize = dexmaplist[4].size
self.fieldIdsOff = dexmaplist[4].offset
self.methodIdsSize = dexmaplist[5].size
self.methodIdsOff = dexmaplist[5].offset
self.classDefsSize = dexmaplist[6].size
self.classDefsOff = dexmaplist[6].offset
self.dataOff = dexmaplist[0x1000].offset
self.dataSize = 0
self.mapOff = dexmaplist[0x1000].offset
self.fileSize = 0
def copytofile(self, file):
file.seek(0, 0)
len = 0
while len < 8:
file.write(struct.pack("B", self.magic[len]))
len += 1
file.write(struct.pack("I", self.checksum))
len = 0
while len < 20:
file.write(struct.pack("B", self.signature[len]))
len += 1
file.write(struct.pack("I", self.fileSize))
file.write(struct.pack("I", self.headerSize))
file.write(struct.pack("I", self.endianTag))
file.write(struct.pack("I", self.linkSize))
file.write(struct.pack("I", self.linkOff))
file.write(struct.pack("I", self.mapOff))
file.write(struct.pack("I", self.stringIdsSize))
file.write(struct.pack("I", self.stringIdsOff))
file.write(struct.pack("I", self.typeIdsSize))
file.write(struct.pack("I", self.typeIdsOff))
file.write(struct.pack("I", self.protoIdsSize))
file.write(struct.pack("I", self.protoIdsOff))
file.write(struct.pack("I", self.fieldIdsSize))
file.write(struct.pack("I", self.fieldIdsOff))
file.write(struct.pack("I", self.methodIdsSize))
file.write(struct.pack("I", self.methodIdsOff))
file.write(struct.pack("I", self.classDefsSize))
file.write(struct.pack("I", self.classDefsOff))
file.write(struct.pack("I", self.dataSize))
file.write(struct.pack("I", self.dataOff))
class DexMapList:
Seq = (0, 1, 2, 3, 4, 5, 6, 0x1000, 0x1001, 0x1002, 0x1003, 0x2001, 0x2000, 0x2002,
0x2003, 0x2004, 0x2005, 0x2006)
def __init__(self):
self.start = 0
self.size = 0
self.dexmapitem = {}
def dump(self, offset):
self.start = offset
self.size = getDword(offset + baseAddr)
mapitem = []
for i in range(0, self.size):
item = DexMapItem()
item.dump(offset + baseAddr + 4 + i * 12)
mapitem.append(item)
item.printf()
for i in range(0, self.size):
mapitem[i].setitem(self.dexmapitem)
self.dexmapitem[mapitem[i].type] = mapitem[i]
def copy(self, file):
for i in range(0, len(DexMapList.Seq)):
index = DexMapList.Seq[i]
if index in self.dexmapitem.keys():
print(index, "start at:", file.tell())
if index != 0x1000:
self.dexmapitem[index].copytofile(file)
else:
self.copytofile(file)
def copytofile(self, file):
print("output map list", file.tell())
file.seek(self.start, 0)
file.write(struct.pack("I", self.size))
for i in range(0, len(DexMapList.Seq)):
index = DexMapList.Seq[i]
if index in self.dexmapitem.keys():
# print(self.dexmapitem[index].type)
file.write(struct.pack("H", self.dexmapitem[index].type))
file.write(struct.pack("H", self.dexmapitem[index].unused))
file.write(struct.pack("I", self.dexmapitem[index].size))
file.write(struct.pack("I", self.dexmapitem[index].offset))
def makeoff(self):
off = 0
for i in range(0, len(DexMapList.Seq)):
index = DexMapList.Seq[i]
if index in self.dexmapitem.keys():
align = off % 4
if align != 0:
off += (4 - align)
if index != 0x1000:
off = self.dexmapitem[index].makeoffset(off)
else:
off = self.makeoffset(off)
return off
def makeoffset(self, off):
self.start = off
off += (4 + self.size * 12)
self.dexmapitem[0x1000].offset = self.start
return off
def getreference(self):
self.dexmapitem[1].getref(self.dexmapitem)
print("string id get ref done")
self.dexmapitem[3].getref(self.dexmapitem)
print("proto id get ref done")
self.dexmapitem[6].getref(self.dexmapitem)
print("class def get ref done")
if 0x1002 in self.dexmapitem.keys():
self.dexmapitem[0x1002].getref(self.dexmapitem)
print("annotation set ref get ref done")
if 0x1003 in self.dexmapitem.keys():
self.dexmapitem[0x1003].getref(self.dexmapitem)
print("annotation set get ref done")
# self.dexmapitem[0x2000].getref(self.dexmapitem)
self.dexmapitem[0x2001].getref(self.dexmapitem)
print("code item get ref done")
if 0x2006 in self.dexmapitem.keys():
self.dexmapitem[0x2006].getref(self.dexmapitem)
print("annotation dir item get ref done")
def getrefbystr(self, str):
return self.dexmapitem[0x2002].getrefbystr(str)
def printf(self, index):
print ("DexMapList:")
print ("size: ", self.size)
for i in self.dexmapitem:
self.dexmapitem[i].printf(index)
class DexMapItem:
Constant = {0: 'TYPE_HEADER_ITEM', 1: 'TYPE_STRING_ID_ITEM', 2: 'TYPE_TYPE_ID_ITEM',
3: 'TYPE_PROTO_ID_ITEM', 4: 'TYPE_FIELD_ID_ITEM', 5: 'TYPE_METHOD_ID_ITEM',
6: 'TYPE_CLASS_DEF_ITEM', 0x1000: 'TYPE_MAP_LIST', 0x1001: 'TYPE_TYPE_LIST',
0x1002: 'TYPE_ANNOTATION_SET_REF_LIST', 0x1003: 'TYPE_ANNOTATION_SET_ITEM',
0x2000: 'TYPE_CLASS_DATA_ITEM', 0x2001: 'TYPE_CODE_ITEM', 0x2002: 'TYPE_STRING_DATA_ITEM',
0x2003: 'TYPE_DEBUG_INFO_ITEM', 0x2004: 'TYPE_ANNOTATION_ITEM', 0x2005: 'TYPE_ENCODED_ARRAY_ITEM',
0x2006: 'TYPE_ANNOTATIONS_DIRECTORY_ITEM'}
def __init__(self):
self.type = 0
self.unused = 0
self.size = 0
self.offset = 0
self.item = []
self.len = 0
def dump(self, addr):
self.type = getWord(addr)
self.unused = getWord(addr + 2)
self.size = getDword(addr + 4)
self.offset = getDword(addr + 8)
def copytofile(self, file):
file.seek(self.offset, 0)
if self.type <= 0x2006:
align = file.tell() % 4
if align != 0:
for i in range(0, 4-align):
file.write(struct.pack("B", 0))
print("copytofile:", DexMapItem.Constant[self.type], file.tell())
for i in range(0, self.size):
if self.type == 0x2000:
print("index, offset", i, hex(self.item[i].start), self.item[i].static_field_size, self.item[i].instance_fields_size, self.item[i].direct_methods_size, self.item[i].virtual_methods_size)
self.item[i].copytofile(file)
# if self.type == 0x2002:
# print("for debug", i, getstr(self.item[i].str))
def printf(self):
print ("type: ", DexMapItem.Constant[self.type])
print ("size: ", self.size)
print ("offset: ", hex(self.offset), hex(self.offset + baseAddr))
# if self.type == index:
# for i in range(0, self.size):
# self.item[i].printf()
# print ()
def setitem(self, dexmapitem):
self.printf()
addr = baseAddr + self.offset
for i in range(0, self.size):
if self.type == 1: # string
dexstringid = DexStringID()
dexstringid.dump(addr + 4 * i)
self.item.append(dexstringid)
elif self.type == 2:
dextypeid = DexTypeID()
dextypeid.dump(addr + 4 * i, dexmapitem[1].item)
self.item.append(dextypeid) # make sure has already build string table
elif self.type == 3:
dexprotoid = DexProtoId()
dexprotoid.dump(addr + 12 * i, dexmapitem[1].item, dexmapitem[2].item)
self.item.append(dexprotoid)
elif self.type == 4:
dexfieldid = DexFieldId()
dexfieldid.dump(addr + 8 * i, dexmapitem[1].item, dexmapitem[2].item)
self.item.append(dexfieldid)
elif self.type == 5:
dexmethodid = DexMethodId()
dexmethodid.dump(addr + 8 * i, dexmapitem[1].item, dexmapitem[2].item)
self.item.append(dexmethodid)
elif self.type == 6:
dexclassdef = DexClassDef()
dexclassdef.dump(addr + 32 * i, dexmapitem[1].item, dexmapitem[2].item)
self.item.append(dexclassdef)
elif self.type == 0x1001: # TYPE_TYPE_LIST
typeitem = TypeItem()
typeitem.dump(addr, dexmapitem[2].item)
addr += typeitem.len
self.item.append(typeitem)
elif self.type == 0x1002: # TYPE_ANNOTATION_SET_REF_LIST
annoitem = AnnotationsetrefList()
annoitem.dump(addr)
addr += annoitem.len
self.item.append(annoitem)
elif self.type == 0x1003: # TYPE_ANNOTATION_SET_ITEM
annoitem = AnnotationsetItem()
annoitem.dump(addr)
addr += annoitem.len
self.item.append(annoitem)
elif self.type == 0x2000: # TYPE_CLASS_DATA_ITEM
classitem = ClassdataItem()
classitem.dump(addr, dexmapitem[0x2001].item)
addr += classitem.len
self.item.append(classitem)
# elif self.type == 0x2001: # TYPE_CODE_ITEM
# codeitem = CodeItem()
# codeitem.dump(addr)
# addr += codeitem.len
# self.item.append(codeitem)
elif self.type == 0x2002: # TYPE_STRING_DATA_ITEM
stringdata = StringData()
stringdata.dump(addr)
addr += stringdata.len
self.item.append(stringdata)
elif self.type == 0x2003: # TYPE_DEBUG_INFO_ITEM
debuginfo = DebugInfo()
debuginfo.dump(addr)
addr += debuginfo.len
self.item.append(debuginfo)
elif self.type == 0x2004: # TYPE_ANNOTATION_ITEM
item = AnnotationItem()
item.dump(addr)
addr += item.len
self.item.append(item)
elif self.type == 0x2005: # TYPE_ENCODED_ARRAY_ITEM
arrayitem = EncodedArrayItem()
arrayitem.dump(addr)
addr += arrayitem.len
self.item.append(arrayitem)
elif self.type == 0x2006: # TYPE_ANNOTATIONS_DIRECTORY_ITEM
dirItem = AnnotationsDirItem()
dirItem.dump(addr)
addr += dirItem.len
self.item.append(dirItem)
def makeoffset(self, off):
if self.type < 0x2000 or self.type == 0x2001 or self.type == 0x2006:
align = off % 4
if align != 0:
off += (4 - align)
self.offset = off
if self.type == 0: # header
self.len = 112
elif self.type == 1: # string id
self.len = 4 * self.size
elif self.type == 2: # type id
self.len = 4 * self.size
elif self.type == 3: # proto id
self.len = 12 * self.size
elif self.type == 4: # field id
self.len = 8 * self.size
elif self.type == 5: # method id
self.len = 8 * self.size
elif self.type == 6: # class def
self.len = 32 * self.size
elif self.type == 0x1000: # map list, resolve specially in dexmaplist class
pass
elif 0x1001 <= self.type <= 0x2006: # type list, annotation ref set list, annotation set item...
for i in range(0, self.size):
off = self.item[i].makeoffset(off)
# if self.type == 0x2002:
# print("for debug", i, off)
self.len = off - self.offset
if self.type == 0x2000:
print("the off is:", off)
if self.type <= 6:
return off + self.len
else:
return off
def getref(self, dexmaplist):
for i in range(0, self.size):
self.item[i].getreference(dexmaplist)
def getreference(self, offset): # offset
if offset == 0:
return None
i = 0
for i in range(0, self.size):
if self.item[i].start == offset + baseAddr:
return self.item[i]
# if i >= self.size:
# os._exit(offset)
print("failed : don not find the refernce")
return None
def getrefbystr(self, str): # for modify the string data
if self.type == 0x2002:
for i in range(0, self.size):
if getstr(self.item[i].str) == str:
return self.item[i]
else:
print("error occur here", self.type)
return None
def getindexbyname(self, str): # search for type id item
for i in range(0, self.size):
if self.item[i].str == str:
print("find index of", DexMapItem.Constant[self.type], str)
return i
print("did not find it in", DexMapItem.Constant[self.type])
return -1
def getindexbyproto(self, short_idx, return_type_idx, param_list, length): # called by item, index of 3
for i in range(0, self.size):
if short_idx == self.item[i].shortyIdx and return_type_idx == self.item[i].returnTypeIdx:
if self.item[i].ref is not None:
if self.item[i].ref.equal(param_list, length):
return i
return -1
class DexStringID:
def __init__(self):
self.stringDataOff = 0
self.size = 0
self.str = ""
self.ref = None
def dump(self, addr):
self.stringDataOff = getDword(addr)
self.size, len = readunsignedleb128(self.stringDataOff + baseAddr)
self.str = getutf8str(self.stringDataOff + len + baseAddr)
def copytofile(self, file):
# self.stringDataoff = self.ref.start
file.write(struct.pack("I", self.ref.start))
def getreference(self, dexmaplist):
self.ref = dexmaplist[0x2002].getreference(self.stringDataOff)
# if self.ref is not None:
# self.ref.printf()
def printf(self):
print ("size: ", self.size, " str: ", self.str, "dataof: ", self.stringDataOff)
class DexTypeID:
def __init__(self):
self.descriptorIdx = 0
self.str = ""
def dump(self, addr, str_table):
self.descriptorIdx = getDword(addr)
self.str = str_table[self.descriptorIdx].str
def copytofile(self, file):
file.write(struct.pack("I", self.descriptorIdx))
def printf(self):
print ("type id: ", self.str)
class DexProtoId:
def __init__(self):
self.shortyIdx = 0
self.returnTypeIdx = 0
self.parametersOff = 0
self.name = ""
self.returnstr = ""
self.ref = None
def dump(self, addr, str_table, type_table):
self.shortyIdx = getDword(addr)
self.returnTypeIdx = getDword(addr + 4)
self.parametersOff = getDword(addr + 8)
self.name = str_table[self.shortyIdx].str
self.returnstr = type_table[self.returnTypeIdx].str
def copytofile(self, file):
file.write(struct.pack("I", self.shortyIdx))
file.write(struct.pack("I", self.returnTypeIdx))
if self.ref is not None:
file.write(struct.pack("I", self.ref.start))
else:
file.write(struct.pack("I", 0))
def getreference(self, dexmaplist):
self.ref = dexmaplist[0x1001].getreference(self.parametersOff)
def printf(self):
print ("return Type:", self.returnstr)
print ("methodname:", self.name)
if self.ref is not None:
self.ref.printf()
class DexFieldId:
def __init__(self):
self.classIdx = 0
self.typeIdx = 0
self.nameIdx = 0
self.classstr = ""
self.typestr = ""
self.name = ""
def dump(self, addr, str_table, type_table):
self.classIdx = getWord(addr)
self.typeIdx = getWord(addr + 2)
self.nameIdx = getDword(addr + 4)
self.classstr = type_table[self.classIdx].str
self.typestr = type_table[self.typeIdx].str
self.name = str_table[self.nameIdx].str
def copytofile(self, file):
file.write(struct.pack("H", self.classIdx))
file.write(struct.pack("H", self.typeIdx))
file.write(struct.pack("I", self.nameIdx))
def printf(self):
print ("classstr:", self.classstr)
print ("typestr:", self.typestr)
print ("name:", self.name)
print ()
class DexMethodId:
def __init__(self):
self.classIdx = 0
self.protoIdx = 0
self.nameIdx = 0
self.classstr = ""
self.name = ""
def dump(self, addr, str_table, type_table):
self.classIdx = getWord(addr)
self.protoIdx = getWord(addr + 2)
self.nameIdx = getWord(addr + 4)
self.classstr = type_table[self.classIdx].str
self.name = str_table[self.nameIdx].str
def copytofile(self, file):
file.write(struct.pack("H", self.classIdx))
file.write(struct.pack("H", self.protoIdx))
file.write(struct.pack("I", self.nameIdx))
def printf(self):
print ("classstr:", self.classstr)
print ("name:", self.name)
print ()
class DexClassDef:
def __init__(self):
self.classIdx = 0
self.accessFlags = 0
self.superclassIdx = 0
self.interfacesOff = 0
self.sourceFileIdx = 0
self.annotationsOff = 0
self.classDataOff = 0
self.staticValuesOff = 0
self.classstr = ""
self.superclassstr = ""
self.sourceFilestr = ""
self.interfacesRef = None
self.annotationsRef = None
self.classDataRef = None
self.staticValuesRef = None
def dump(self, addr, str_table, type_table):
self.classIdx = getDword(addr)
self.accessFlags = getDword(addr + 4)
self.superclassIdx = getDword(addr + 8)
self.interfacesOff = getDword(addr + 12)
self.sourceFileIdx = getDword(addr + 16)
self.annotationsOff = getDword(addr + 20)
self.classDataOff = getDword(addr + 24)
self.staticValuesOff = getDword(addr + 28)
self.classstr = type_table[self.classIdx].str
self.superclassstr = type_table[self.superclassIdx].str
if self.sourceFileIdx == 0xFFFFFFFF:
self.sourceFilestr = "NO_INDEX"
else:
self.sourceFilestr = str_table[self.sourceFileIdx].str
# get class data reference by its name,e.g. Lcom/cc/test/MainActivity;
def getclassdefref(self, str):
if self.classstr == str and self.classDataOff > 0:
return self.classDataRef
return None
def copytofile(self, file):
file.write(struct.pack("I", self.classIdx))
file.write(struct.pack("I", self.accessFlags))
file.write(struct.pack("I", self.superclassIdx))
if self.interfacesRef is not None:
file.write(struct.pack("I", self.interfacesRef.start))
# print(self.interfacesRef.start)
else:
file.write(struct.pack("I", 0))
file.write(struct.pack("I", self.sourceFileIdx))
if self.annotationsRef is not None:
file.write(struct.pack("I", self.annotationsRef.start))
# print(self.annotationsRef.start)
else:
file.write(struct.pack("I", 0))
if self.classDataRef is not None:
file.write(struct.pack("I", self.classDataRef.start))
else:
file.write(struct.pack("I", 0))
if self.staticValuesRef is not None:
file.write(struct.pack("I", self.staticValuesRef.start))
else:
file.write(struct.pack("I", 0))
def getreference(self, dexmaplist):
self.interfacesRef = dexmaplist[0x1001].getreference(self.interfacesOff)
if 0x2006 in dexmaplist.keys():
self.annotationsRef = dexmaplist[0x2006].getreference(self.annotationsOff)
self.classDataRef = dexmaplist[0x2000].getreference(self.classDataOff)
if 0x2005 in dexmaplist.keys():
self.staticValuesRef = dexmaplist[0x2005].getreference(self.staticValuesOff)
def printf(self):
print ("classtype:", self.classIdx, self.classstr)
print("access flag:", self.accessFlags)
print ("superclasstype:", self.superclassIdx, self.superclassstr)
print ("iterface off", self.interfacesOff)
print("source file index", self.sourceFilestr)
print("annotations off", self.annotationsOff)
print("class data off", self.classDataOff)
print("static values off", self.staticValuesOff)
if self.interfacesRef is not None:
self.interfacesRef.printf()
if self.annotationsRef is not None:
self.annotationsRef.printf()
if self.classDataRef is not None:
self.classDataRef.printf()
if self.staticValuesRef is not None:
self.staticValuesRef.printf()
class TypeItem: # alignment: 4 bytes
def __init__(self):
self.start = 0
self.size = 0
self.list = []
self.str = []
self.len = 0
def dump(self, addr, type_table):
self.start = addr
self.size = getDword(addr)
self.len = 4 + 2 * self.size
for i in range(0, self.size):
self.list.append(getWord(addr + 4 + 2 * i))
self.str.append(type_table[self.list[i]].str)
if self.size % 2 == 1:
getWord(addr + 4 + 2 * self.size)
self.len += 2
def copytofile(self, file):
file.write(struct.pack("I", self.size))
for i in range(0, self.size):
file.write(struct.pack("H", self.list[i]))
if self.size % 2 == 1:
file.write(struct.pack("H", 0))
def equal(self, param_list, length):
if length != self.size:
return False
for i in range(0, self.size):