Full disclosure I am front end developer with hardly any knowledge of security trying to complete a security challenge. All info below I picked up in the last 12 hours so if it doesn’t make sense feel free to correct me. Lastly I don’t consider this cheating because I am not doing the challenge to get a job I was just bored tonight, but it’s 5.30am and I refuse to be beaten.
So far I have this :
The file is a pcap file I can open this pcap file in wireshark and see the TLS handshake Somehow I am meant to be able to decrypt the application data by generating a private key using the information about the cipher and other info in ‘Server Hello’ packet
I have only found 1 blogpost on how to do something similar, I am thinking that being in a security challenge this must be a common type of attack. Does this have a name and can anybody shed some light on how to go about this?