Not completely certain if it's better to post here or security, so, trying here first.
I'm currently attempting to test a new feature in a desktop application that uses 2 way pinning for https traffic. If the client certificate (built into the application) is not one that's expected, the server will return an error.
Normally, running something like Fiddler would be fine, but, because of the fact that the Fiddler uses it's own, we can not see the traffic coming back.
Is there a way in Fiddler to import a certificate that I haven't managed to find yet, or, is there another way to inspect this traffic?