import re
rx = r"\(.*?\)/CASE"
s = 'THE (HIGH COURT OF HIMACHAL PRADESH)/ORG, (SHIMLA)/PLACE (Criminal\nAppeal No. 235 of 2006)/CASE Judgment Reserved on : (27. 04. 2016)/DATE\nDate of Decision : (June 2, 2016)/CASE")'
print(re.findall(rx, s,re.DOTALL))
aW1wb3J0IHJlCnJ4ID0gciJcKC4qP1wpL0NBU0UiCnMgPSAnVEhFIChISUdIIENPVVJUIE9GIEhJTUFDSEFMIFBSQURFU0gpL09SRywgKFNISU1MQSkvUExBQ0UgKENyaW1pbmFsXG5BcHBlYWwgTm8uIDIzNSBvZiAyMDA2KS9DQVNFIEp1ZGdtZW50IFJlc2VydmVkIG9uIDogKDI3LiAwNC4gMjAxNikvREFURVxuRGF0ZSBvZiBEZWNpc2lvbiA6IChKdW5lIDIsIDIwMTYpL0NBU0UiKScKcHJpbnQocmUuZmluZGFsbChyeCwgcyxyZS5ET1RBTEwpKQ==