Sharepoint - Break Role inheritance without Rest API with designer 2013 workflow

Would Impersonation Step help?

The impersonation step runs as the last person who published the workflow and has the capability of removing permissions for an item/document:
Screenshot source: http://www.nothingbutsharepoint.com/2011/04/15/impersonation-in-sharepoint-workflows-an-interesting-pitfall-aspx/

1. Go to Site Settings>Site features> Enable 'Workflows can use app permissions' https://msdn.microsoft.com/en-us/library/jj822159.aspx

2. Add the impersonation step.

3. In the impersonation step, choose appropriate activity to remove/add permissions.

Here you have a sample user story: http://www.qdoscc.com/blog/sharepoint-tips-app-step-or-impersonation-step-sharepoint-designer-2013