def unpack_arc(fn,key):
ClassDict=getClassDict()
fp=open(fn,'rb')
magic = '\x41\x52\x43\x43'
if fp.read(4) != magic:
fp.close()
return None
ver,nums = struct.unpack('<HH',fp.read(4))
flist = []
for i in range(nums):
index_block = fp.read(0x50)
index_block = libBlowFish.decrypt_data(index_block,key)
fname = index_block[:64].rstrip(b'\x00').decode('latin-1')
ftype = struct.unpack('<I',index_block[0x40:0x44])[0]
zsize = struct.unpack('<I',index_block[0x44:0x48])[0]
sizetmp = struct.unpack('<I',index_block[0x48:0x4c])[0]
#print('sizetmp:%08x'%sizetmp)
size = sizetmp - (sizetmp>>24<<24)
#print('size:%08x'%size)
offset = struct.unpack('<I',index_block[0x4c:0x50])[0]
comFlag = True
if size == zsize:
comFlag = False
flist.append((fname,ftype,zsize,sizetmp,offset,comFlag))
#print('%s,%08x,%08x,%08x,%08x'%(fname,ftype,zsize,sizetmp,offset))
for (fname,ftype,zsize,size,offset,comFlag) in flist:
destdir = '%s_unpacked\\%s'%(fn,'\\'.join(fname.split('\\')[:-1]))
if ftype in ClassDict:
extname = ClassDict[ftype][1]
else:
extname = '.bin'
print('decompressing %s at:%08x with %08x'%(fname,offset,zsize))
if not os.path.exists(destdir):
os.makedirs(destdir)
dest=open('%s\\%s%s'%(destdir,fname.split('\\')[-1],extname),'wb')
fp.seek(offset)
bstr=fp.read(zsize)
bstr=libBlowFish.decrypt_data(bstr,key)
print('zlib header check:%02x'%struct.unpack('>H',bstr[:2])[0])
if comFlag:
bstr=zlib.decompress(bstr)
dest.write(bstr)
dest.close()
def unpack_arc(fn, key):
ClassDict = getClassDict()
fp = open(fn, "rb")
magic = "\x41\x52\x43\x43"
if fp.read(4) != magic:
fp.close()
return None
ver, nums = struct.unpack("<HH", fp.read(4))
flist = []
for i in range(nums):
index_block = fp.read(0x50)
index_block = libBlowFish.decrypt_data(index_block, key)
fname = index_block[:64].rstrip(b"\x00").decode("latin-1")
ftype = struct.unpack("<I", index_block[0x40:0x44])[0]
zsize = struct.unpack("<I", index_block[0x44:0x48])[0]
sizetmp = struct.unpack("<I", index_block[0x48:0x4C])[0]
# print('sizetmp:%08x'%sizetmp)
size = sizetmp - (sizetmp >> 24 << 24)
# print('size:%08x'%size)
offset = struct.unpack("<I", index_block[0x4C:0x50])[0]
comFlag = True
if size == zsize:
comFlag = False
flist.append((fname, ftype, zsize, sizetmp, offset, comFlag))
# print('%s,%08x,%08x,%08x,%08x'%(fname,ftype,zsize,sizetmp,offset))
for (fname, ftype, zsize, size, offset, comFlag) in flist:
destdir = "%s_unpacked\\%s" % (fn, "\\".join(fname.split("\\")[:-1]))
if ftype in ClassDict:
extname = ClassDict[ftype][1]
else:
extname = ".bin"
print("decompressing %s at:%08x with %08x" % (fname, offset, zsize))
if not os.path.exists(destdir):
os.makedirs(destdir)
dest = open("%s\\%s%s" % (destdir, fname.split("\\")[-1], extname), "wb")
fp.seek(offset)
bstr = fp.read(zsize)
bstr = libBlowFish.decrypt_data(bstr, key)
print("zlib header check:%02x" % struct.unpack(">H", bstr[:2])[0])
if comFlag:
bstr = zlib.decompress(bstr)
dest.write(bstr)
dest.close()
def repack_arc(fn,key):
ClassDict=getClassDict()
print('repacking %s '%fn)
base_addr = 0x8000
offset = 0x8000
if not os.path.exists('%s_unpacked\\'%fn):
return None
fp = open(fn,'rb+')
magic = '\x41\x52\x43\x43'
if fp.read(4) != magic:
fp.close()
return None
ver,nums = struct.unpack('<HH',fp.read(4))
flist = []
for i in range(nums):
tmp_ofs = fp.tell()
index_block = fp.read(0x50)
index_block = libBlowFish.decrypt_data(index_block,key)
fname = index_block[:64].rstrip(b'\x00').decode('latin-1')
ftype = struct.unpack('<I',index_block[0x40:0x44])[0]
zsize = struct.unpack('<I',index_block[0x44:0x48])[0]
sizetmp = struct.unpack('<I',index_block[0x48:0x4c])[0]
size = sizetmp - (sizetmp>>24<<24)
offset = struct.unpack('<I',index_block[0x4c:0x50])[0]
comFlag = True
flist.append((tmp_ofs,fname,ftype,comFlag))
#print(fname,ftype,zsize,size,offset,comFlag)
boffset = 0x8000
fp.truncate(boffset)
for (tmp_ofs,fname,ftype,comFlag) in flist:
destdir = '%s_unpacked\\%s'%(fn,'\\'.join(fname.split('\\')[:-1]))
if ftype in ClassDict:
extname = ClassDict[ftype][1]
else:
extname = '.bin'
dest_name = '%s\\%s%s'%(destdir,fname.split('\\')[-1],extname)
dest = open(dest_name,'rb')
zdata = dest.read()
zlibdata=zlib.compress(zdata)
sdata = libBlowFish.encrypt_data(zlibdata,key)
print('eompressed size:%08x'%len(zlibdata))
dest.close()
index_block = ''
index_block += fname.encode('latin-1')
print(dest_name)
index_block += ('\x00'*(0x40 - len(fname.encode('latin-1'))%0x40))
index_block += struct.pack('<I',ftype)
index_block += struct.pack('<I',len(sdata))
index_block += struct.pack('<I',(len(zdata)|0x40000000))
index_block += struct.pack('<I',boffset)
#print('packing:zsize:%08x'%len(zdata),'size:%08x'%(len(file_data)<<3|0x0b010))
#print('%s,%08x,%08x,%08x,%08x'%(fname,ftype,len(zdata),(len(file_data)|0x40000000),offset))
block = libBlowFish.encrypt_data(index_block,key)
#print(dblock,hex(tmp_ofs))
fp.seek(tmp_ofs)
fp.write(block)
fp.seek(boffset)
fp.write(sdata)
print('encrypted size:%08x'%len(sdata))
boffset += len(sdata)
print('end offset:%08x'%boffset)
fp.close()
def repack_arc(fn, key):
ClassDict = getClassDict()
print("repacking %s " % fn)
base_addr = 0x8000
offset = 0x8000
if not os.path.exists("%s_unpacked\\" % fn):
return None
fp = open(fn, "rb+")
magic = "\x41\x52\x43\x43"
if fp.read(4) != magic:
fp.close()
return None
ver, nums = struct.unpack("<HH", fp.read(4))
flist = []
for i in range(nums):
tmp_ofs = fp.tell()
index_block = fp.read(0x50)
index_block = libBlowFish.decrypt_data(index_block, key)
fname = index_block[:64].rstrip(b"\x00").decode("latin-1")
ftype = struct.unpack("<I", index_block[0x40:0x44])[0]
zsize = struct.unpack("<I", index_block[0x44:0x48])[0]
sizetmp = struct.unpack("<I", index_block[0x48:0x4C])[0]
size = sizetmp - (sizetmp >> 24 << 24)
offset = struct.unpack("<I", index_block[0x4C:0x50])[0]
comFlag = True
flist.append((tmp_ofs, fname, ftype, comFlag))
# print(fname,ftype,zsize,size,offset,comFlag)
boffset = 0x8000
fp.truncate(boffset)
for (tmp_ofs, fname, ftype, comFlag) in flist:
destdir = "%s_unpacked\\%s" % (fn, "\\".join(fname.split("\\")[:-1]))
if ftype in ClassDict:
extname = ClassDict[ftype][1]
else:
extname = ".bin"
dest_name = "%s\\%s%s" % (destdir, fname.split("\\")[-1], extname)
dest = open(dest_name, "rb")
zdata = dest.read()
zlibdata = zlib.compress(zdata)
sdata = libBlowFish.encrypt_data(zlibdata, key)
print("eompressed size:%08x" % len(zlibdata))
dest.close()
index_block = ""
index_block += fname.encode("latin-1")
print(dest_name)
index_block += "\x00" * (0x40 - len(fname.encode("latin-1")) % 0x40)
index_block += struct.pack("<I", ftype)
index_block += struct.pack("<I", len(sdata))
index_block += struct.pack("<I", (len(zdata) | 0x40000000))
index_block += struct.pack("<I", boffset)
# print('packing:zsize:%08x'%len(zdata),'size:%08x'%(len(file_data)<<3|0x0b010))
# print('%s,%08x,%08x,%08x,%08x'%(fname,ftype,len(zdata),(len(file_data)|0x40000000),offset))
block = libBlowFish.encrypt_data(index_block, key)
# print(dblock,hex(tmp_ofs))
fp.seek(tmp_ofs)
fp.write(block)
fp.seek(boffset)
fp.write(sdata)
print("encrypted size:%08x" % len(sdata))
boffset += len(sdata)
print("end offset:%08x" % boffset)
fp.close()
