The Secret Brunsviger

Forensics

I have intercepted encrypted HTTPS traffic from the secret brunsviger baking forum, but I need help decrypting it.

points: 50

solves: 242

author: Ha1fdan

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traffic.pcap and keys.log given:

Open Wireshark to observe the pcap file:

In Preferences, set TLS keys using the log file given. Now Application Data is visible:

The JSON packets seem interesting...

Decode (base64) the secret recipe to get the flag