Last Summer SANS organised a security/hacking challenge through 4 of their brochures, each brochure had an “easy” challenge in the form of a hidden message to de-cipher to get a URL to the second level of each of the 4 challenges.
Below is a brief explanation of the steps I took for the main technical challenges:
1. Challenge 1, level 2: Alice’s encrypted file for Bob
First you need to load the pcap file provided for that question into Wireshark, two type of traffic should catch your attention: some HTTP and SMB traffic. Doing a quick search (CTRL-F) for the string Bob in the “packet bytes” will get you to Frame 669, which is a web chat over HTTP where Alice mentions to someone that she needs to send a file to Bob and R...
>>[READ MORE]

SANS Brochure Challenge Write-Up
BlackHat Europe 2014 – Some Highlights
iOS Backdoors
Critical Infrastructure and Cyber attacks
Apple Security in the Enterprise
A new look