def unpackCommand(file, outDir):
"""Extracts the firmware image from the updater executable, unpacks it and extracts it to the specified directory"""
print "Reading installer binary"
exeFile = pe.readExe(file.read())
print "Decompressing installer data"
zipFile = zip.readZip(zip.findZip(exeFile["_winzip_"].tobytes()))
print "Reading .dat file"
datFile = dat.readDat(zipFile[dat.findDat(zipFile.keys())])
print "Decoding firmware image"
firmwareData = fdat.decryptFdat(datFile["FDAT"].tobytes())
print "Extracting updater image"
writeFile(outDir, "updater.img", firmwareData.getImg())
print "Decompressing .tar file"
tarFile = tar.readTar(firmwareData.getTar())
print "Extracting files"
for path, data in tarFile.iteritems():
if not re.search("^\d{4}_([^/]+)_sum/\\1\.sum$", path):
if path.startswith("0700_part_image/dev/nflash") and lzpt.isLzpt(data):
print "Decompressing file system image " + os.path.basename(path)
data = lzpt.readLzpt(data)
writeFile(outDir, path, data)
print "Done"
def unpackDat(datFile, fdatFile):
print('Decrypting firmware image')
datContents = dat.readDat(datFile)
crypterName, data = fdat.decryptFdat(datContents.firmwareData)
shutil.copyfileobj(data, fdatFile)
return {
'normalUsbDescriptors': datContents.normalUsbDescriptors,
'updaterUsbDescriptors': datContents.updaterUsbDescriptors,
'isLens': datContents.isLens,
'crypterName': crypterName,
}
def unpackDat(datFile, fdatFile):
print('Decrypting firmware image')
datContents = dat.readDat(datFile)
crypterName, data = fdat.decryptFdat(datContents.firmwareData)
shutil.copyfileobj(data, fdatFile)
return {
'normalUsbDescriptors': datContents.normalUsbDescriptors,
'updaterUsbDescriptors': datContents.updaterUsbDescriptors,
'isLens': datContents.isLens,
'crypterName': crypterName,
}