start hw4

hw4/hw4.md

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+# Homework 3: Find the firmware
+
+We start by copying the firmware capture file from ada to our machine
+
+![scp-firmware](./scp-firmware.png)
+
+## Reverse Engineering
+First lets open this capture up in wireshark and do a high level overview
+
+### Wireshark overview
+
+![wireshark-0](./wireshark-0.png)
+
+Knowing we are ultimetly looking to re-construct a firmware download, we can discern some important info from wireshark
+
+* There are 241,531 packets in this capture, but only some are the traffic directly related to this download
+* Client of the download is 192.168.86.167 and server origin is 192.168.86.228
+* The download is split over multiple HTTP requests by the shown convention, which themselves are split over multiple TCP requests
+
+### 
+
+## Questions
+1) What architecture is the firmware intended to run on?
+2) What OS is the firmware running?
+3) What users are present on the system?