I am using an NPM package called Lastpass... it decrypts most of the info of the Lastpass vault, but not the name, notes, username and password.
Strings look like this:
p://sn',
notes: 'qS�\r����Xuc�\u0013��L��n����cB�a8���\u0012/�ܰ\u0000��`y�\t�^*���\tF���]��\u001b.�/�俷a擘,9{�3\u001f�0��\n�\u0012O�B�ٸ�\u001e�%2\u0006�JvP�]�\u000b>����\u0017c\rQ0$7\u0003���(�O\u000f�(�/H�~#�Q�\u0011\u001a��Y�\u0013N��?9�ٝ��ͧ{X��}XdI�k\r�����G�ƈLJ�B\u001d �\u001f�=��OM�\u00056\u000e��9�WCflX\bc�3����\u0002FR\u0017�.�B�\u0013\u0013���b1�h�#���]\u0019�\f>����Cx\u0002w��X�G\u0016�h#\u001c��C)�\u00030��V���\tG^\u001a�o���|\u0004�TC9�&�t.RBw����\u0018�ɪR%��@�
I can see some Unicode chars but I really dont know what encryption this is using... I hope it's nothing custom undecryptable :(