Helper script for Android to automate packet capture procedure (BurpSuite, Charles, etc)

proxy-helper.sh

#!/usr/bin/env bash

# Network presets
declare -A address=""
declare -A proxy=""

adb_connect() {
    adb start-server
    connected_devices=$(($(adb devices | wc -l)-2))
    if [ $connected_devices = "0" ];
    then
        try_wireless_adb
        connected_devices=$(($(adb devices | wc -l)-2))
    fi
    if [ $connected_devices = "0" ];
    then
        exit 1;
    fi
}

try_wireless_adb() {
    if [ -z "$address" ]; then
        echo -n "Wireless ADB Address: "
        read address
    fi
    adb connect "${address#\n}"
}

proxy_status() {
    adb_connect
    echo "== ADB Devices =="
    adb devices
    echo "== Proxy Settings =="
    setting=$(adb shell settings get global http_proxy)
    echo -n "$setting"
    if [ "$setting" = ":0" ] || [ "$setting" = "null" ];
    then
        echo " (Off)"
    else
        echo " (On)"
    fi
    echo ""
    echo "== VPN Status =="
    adb shell ifconfig tun0 >/dev/null 2>&1
    if [ "$?" = 0 ];
    then
        echo "On"
    else
        echo "Off"
    fi
}

proxy_start() {
    adb_connect
    if [ -z "$proxy" ]; then
        echo -n "Proxy: "
        read proxy
    fi
    adb shell settings put global http_proxy $proxy
    adb shell ifconfig tun0 >/dev/null 2>&1
    if [ "$?" = 0 ];
    then
        echo -n "Stop shadowsocks now?(Y/n):"
        read ssoff
        case "${ssoff#\n}" in
            "" | Y | y )
                adb shell am start -n com.github.shadowsocks/.QuickToggleShortcut;
                sleep 2;;
        esac
    fi
    proxy_status
}

proxy_stop() {
    adb_connect
    adb shell settings put global http_proxy :0
    adb shell ifconfig tun0 >/dev/null 2>&1
    if [ "$?" != 0 ];
    then
        echo -n "Start shadowsocks now?(Y/n):"
        read ssoff
        case "${ssoff#\n}" in
            "" | Y | y )
                adb shell am start -n com.github.shadowsocks/.QuickToggleShortcut;
                sleep 2;;
        esac
    fi
    proxy_status
}

case "$1" in
    status)
        proxy_status;;
    start)
        proxy_start;;
    stop)
        proxy_stop;;
    *)
        echo "Usage: proxy-helper [status|start|stop]";;
esac