With this gist you can go over all subpages of repository list in bitbucket and extract list of them all

extract_bitbucket_repository_names.js

// 1. Go to https://bitbucket.org/dashboard/repositories?page=1
// launch below two lines in developer console
var cssSelector = '#repositories-pjax > div > section > table > tbody > tr > td.repo-list--repo-column > div > a';
var bbRepositories = [];

// launch below statement once on 1st page, then go to 2nd page and launch it again and until you go through all pages
$(cssSelector).each(
    function(index, el) {
        bbRepositories.push(el.attributes.href.nodeValue.split('/')[2]);
    }
);

// finally, launch below to echo all the repos gathered to browser console from where you can copy it to clipboard and use anywhere
bbRepositories.join("\n")