Add sniffing and developing notes

Add sniffing and developing notes

docs/Develop.md

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+# Developing
+To start developing and contributing, install in dev mode.
+
+`pipenv install --dev`
+
+Review the [How It Works](How_It_Works.md) doc to understand the basics and then dive into the code.
+
+As features and functions are added, be sure to add tests to keep the test coverage high.
+
+# Testing
+Bumper uses pytest for the majority of test cases, review current tests in the /tests directory.
+
+### Running tests
+Enter pipenv shell `pipenv shell`
+
+**Run tests**
+
+- `python -m pytest tests`
+
+
+**Run tests with coverage**
+
+- `python -m pytest --cov=./ tests`
+
+**Run tests with coverage html report**
+
+- `python -m pytest --cov=./ tests --cov-report html:tests/report`
+    - The report will be output into tests/report/index.html for further analysis.

docs/Sniffing.md

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+Reverse engineering the protocols and default apps/APIs requires some patience and work.  I've found using a Kali Linux VM that hosts an access point with MitMProxy works well.  I followed a number of articles in order to get started, which helped in creating the below VM setup and scripts.
+
+> References:
+> 
+> - https://blog.heckel.xyz/2013/07/01/how-to-use-mitmproxy-to-read-and-modify-https-traffic-of-your-phone/
+> - https://docs.mitmproxy.org/stable/howto-wireshark-tls/
+> - https://www.yeahhub.com/create-fake-ap-dnsmasq-hostapd-kali-linux/
+> - http://www.geekmind.net/2011/01/linux-wifi-operation-not-possible-due.html
+
+# VM Setup
+
+**Requirements**
+
+- Kali Linux VM
+  - Bridge mode network
+  - USB Wifi Dongle (used a Ralink variant)
+
+Create three files in the same directory (/root/accesspoint):
+
+**Start_Sniff.sh**
+
+```bash
+#!/bin/bash
+sysctl -w net.ipv4.ip_forward=1
+iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 80 -j REDIRECT --to-port 8080
+iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 443 -j REDIRECT --to-port 8080
+iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 8883 -j REDIRECT --to-port 8080
+sudo nmcli radio wifi off
+sudo rfkill unblock wlan
+ifconfig wlan0 up 192.168.1.1 netmask 255.255.255.0
+route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1
+
+#Open in new tabs
+gnome-terminal -x sh -c "SSLKEYLOGFILE="/root/sslmitmkeylog.txt" mitmweb -m transparent -w "/root/mitmout_new.txt" --tcp-hosts 192.168.1.\d+ --ssl-insecure --raw; bash"
+gnome-terminal -x sh -c "dnsmasq -C /root/accesspoint/dnsmasq.conf -d; bash"
+gnome-terminal -x sh -c "hostapd /root/accesspoint/hostapd.conf; bash"
+```
+
+**dnsmasq.conf**
+
+```bash
+interface=wlan0
+dhcp-range=192.168.1.2,192.168.1.30,255.255.255.0,12h
+dhcp-option=3,192.168.1.1
+dhcp-option=6,192.168.1.1
+server=8.8.8.8
+log-queries
+log-dhcp
+listen-address=127.0.0.1
+# Set DNS settings per Bumper documentation as needed below
+#address=/msg-na.ecouser.net/192.168.1.1
+#address=/mq-ww.ecouser.net/192.168.1.1
+```
+
+**hostapd.conf**
+
+```bash
+interface=wlan0
+driver=nl80211
+ssid=bumper_mitm
+hw_mode=g
+channel=11
+macaddr_acl=0
+ignore_broadcast_ssid=0
+auth_algs=1
+wpa=2
+wpa_passphrase=IAmNotSafe
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=CCMP
+wpa_group_rekey=86400
+ieee80211n=1
+wme_enabled=1
+```
+
+# Sniffing
+
+Run Start_Sniff.sh to begin. Ensure the bot and apps connect via the Wifi network being sniffed.
+
+- For API/App Interactions you should see the details in the mitmproxy window.
+- For XMPP/MQTT you will need to use WireShark.
+  - Ensure you point WireShark at the sslmitmkeylog file in order to decrypt any encrypted communications.
+
+
+This documentation won't go into the details of reviewing the logs/traffic.  The reader will need to identify how to use WireShark etc for this.
+
+
+## XMPPPeek - MITM XMPP traffic between the Android or iOS App and the Ecovacs server
+
+###### *Stolen from the [Sucks Documentation](https://github.com/wpietri/sucks/blob/master/developing.md#mitm-xmpp-traffic-between-the-android-or-ios-app-and-the-ecovacs-server)*
+
+XMPPPeek can also be used to man in the middle the traffic between the Android/iOS App and the Ecovacs server.
+
+1. Download [xmpppeek](https://www.beneaththewaves.net/Software/XMPPPeek.html)
+1. Create a self-signed certificate with the following command
+
+`openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes`
+
+1. Edit xmpppeek.py and change port to 5223
+
+1. Look at the [DNS docs](DNS_Setup.md) for information on which Ecovacs XMPP server is the right one for your Country. For example, a US user will be using `msg-na.ecouser.net`. Find and note the IP address for the server.
+
+1. Make sure the mobile App talks to your machine instead of the server. This can be
+accomplished modifying your router's DNS configuration to have the Ecovacs domain
+name point to your IP.
+
+1. Run xmppeek as follows.
+
+`python ./xmpppeek.py <ECOVACS XMPP SERVER IP> cert.pem key.pem`
+