/^pass\s*:(.*)$/ is one possible solution, but the best regex would be one that specifically matches whatever value you are looking to extract. this regex assumes that the line you want always starts with "pass", then some amount of whitespace, then a colon, then any amount of characters until the end of the line. the value is stored in $1 (it will be overwritten each time)
Everything is true." "Even false things?" "Even false things are true" "How can that be?" "I dunno man, I didn't do it."