Override final ActiveScan values to insert custom payload?
Is there a way to override ActiveScan checks or the order of checks so a custom check is run last?
Any ideas/suggestions appreciated.
There isn’t a way to reorder the checks that Burp performs. Actually, Burp deliberately sends its own test string for stored XSS last, to maximize the chances of it not getting overwritten.
You could disable all of Burp’s own active scan checks, so that yours is the only one that runs. That should do the job.