A wrapper shell script for CrackMapExec (https://github.com/byt3bl33d3r/CrackMapExec) that will grab all the SMB shares and search readable ones for your search term.
./search-smb-shares.sh -f [IP or file of IPs to check] -u [username] (optional) -p [password] (optional) -k [search term, ie. password, ssn, tax, client] -d [depth to search] (optional)
Don't include the domain with the username
When it finishes, it'll output to a file named share-data.txt