Lisa Bock issues a challenge to decrypt an SSL stream.
(bright music)…- [Instructor] Okay, let's do a quick challenge.…I want you to download those two packet captures,…ALittleTreat and CaptureSurprise,…along with that little text file premaster.txt.…You'll put the premaster.txt in a temp folder…on your C drive,…then change your system variables…to create SSLKEYLOGFILE and premaster.txt.…
And then go in and have Wireshark point…to the key file on your C drive.…Now I've opened up CaptureSurprise.pcap…and or pcap next generation,…and let's right click and let's say Follow the SSL Stream.…Now as you can see we don't see anything,…because it's encrypted.…Now well close that and now we'll do File…and Export Objects, HTTP.…And, again, I can't see anything.…
So once you decrypt it,…you're going to find that there's a JPEG within that,…and I want you to see what that JPEG is…and save it on your Desk.…Okay, this should take you about 10 minutes.…I want you to have fun and good luck.…
- Tapping into the network
- Baselining the network
- Troubleshooting to discover the cause of a slow network
- Merging traffic
- Sanitizing packet captures
- Capture engines
- Optimizing packet captures
- Basic and advanced IO graphs
- TCP stream graphs
Skill Level Intermediate
Learning Cryptography and Network Security (2015)with Lisa Bock1h 45m Intermediate
Enhance your skills1m 5s
1. Tapping into the Stream
2. Solving Network Problems
3. Capture Engines and Wi-Fi
4. Command Line Capture
5. IO and Stream Graphs
What's next?1m 13s
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