Certificate expiration periods have also gotten shorter, so I always wonder if mine is still valid. Whenever traffic isn’t captured in Burp, I’m never sure whether it’s SSL pinning or the certificate itself — so I built this to eliminate one of those possibilities.
When a certificate expires, it generates a new one under /data/local/tmp and drops it in PKCS#12 format. I compiled OpenSSL with NDK so it can be used on Android.