kamicater / lg-gallery-decryptor

Decrypt your encrypted images (*.jpg.dm) and videos (*.mp4.dm) from the LG Gallery App.

LG Gallery Decryptor

Decrypt your encrypted images (*.jpg.dm) and videos (*.mp4.dm) from the LG Gallery App. You need to know your gmail address. It's also possible to decrypt your multimedia files if you don't remember your gmail address.

Based on the paper "A study on LG content lock and data aquisition from apps based on content lock function" from Giyoon Kim, Myungseo Park and Jongsung Kim from 28 September 2021.

Please use at your own advice. There is no error handling.

Installation

Install the needed dependencies:

python3 -m pip install -r requirements.txt

How to use:

You can use the help to see an explanation of all of the arguments:

python3 lgdecryptor.py --help

Example decrypting a single file:

python3 lgdecryptor.py [email protected] 20161230_133055.jpg.dm

Example decrypting multiple files:

python3 lgdecryptor.py [email protected] 20161230_133055.jpg.dm 20161230_134050.mp4.dm

Example decrypting multiple files using globbing:

python3 lgdecryptor.py [email protected] *.dm

The output directory can be changed as so:

python3 lgdecryptor.py -o decrypted/ [email protected] *.dm

lg-gallery-decryptor's Issues

AttributeError: 'NoneType' object has no attribute 'group'

Hi, I am trying to run this script on a video, but it fails to find lgeflock.

E:\x>python lgdecryptor.py 20190204_235306.mp4.dm
Start decrypting file 20190204_235306.mp4.dm
Traceback (most recent call last):
  File "E:\x\lgdecryptor.py", line 210, in <module>
    main()
  File "E:\x\lgdecryptor.py", line 170, in main
    lgeflock, iv, imagestartbyte = get_lgeflock_iv_imagestart(image_path_encrypted)
  File "E:\x\lgdecryptor.py", line 136, in get_lgeflock_iv_imagestart
    lgeflock = result_lgeflock.group(1)
AttributeError: 'NoneType' object has no attribute 'group'

.

.

TypeError: can only concatenate str

Hello
Thank you very much for your work, I hope i can restore my files too which taken from broken phone and couldn't restore for a long time.

i have tryed your script but couldn't work it, any help will be perfect, when I run with my files I got that console

C:\test>python lgdecryptor.py Screenshot.png.dm
Start decrypting file Screenshot.png.dm
lgeflock: [email protected]
iv: b'XXXXXXXXXX'
File information read successfully
Retrieving decryption key
Traceback (most recent call last):
File "C:\test\lgdecryptor.py", line 211, in
main()
File "C:\test\lgdecryptor.py", line 190, in main
dk = decryptlg(gmail, lgeflock)
File "C:\test\lgdecryptor.py", line 39, in decryptlg
getword(h1, h1_sha)
File "C:\test\lgdecryptor.py", line 21, in getword
return hexvalue[(index * 8):(index * 8 + 8)]
TypeError: can only concatenate str (not "int") to str

how to solve this problem?

Regards and thank you very much again for your work.

P.S: i have marked with words xxxxxx for private things, as your scripted worked there.

Please help

Can you please help me how to do it?
Im not into coding and I have lot of files to decrypt but in the "How to" is only way by writing them one by one

Probably user errors

@Brollyzeven
Your line C:\Users\mwall>Python C:\Users\mwall\Desktop\LG\lgdecryptor.py 20141123_174651.mp4 (2020_06_29 03_16_15 UTC).dm is wrong. Read the How to again:

python lgdecryptor.py encrypted/20161230_133055.jpg.dm

So in your case:

C:\Users\mwall>cd C:\Users\mwall\Desktop\LG\
C:\Users\mwall\Desktop\LG>Python lgdecryptor.py encrypted\20141123_174651.mp4.dm

or probably

C:\Users\mwall>cd C:\Users\mwall\Desktop\LG\
C:\Users\mwall\Desktop\LG>Python lgdecryptor.py "encrypted\20141123_174651.mp4 (2020_06_29 03_16_15 UTC).dm"

Notice the quotes!

Does it work on LG C360 ?

Hi,
I just found an old phone I've when I was younger and I've lost the pin for unlock the Gallery App but I don't remember there was an gmail necessary at this time so does it work with only the pin ?
Thanks