Script for easy tcpdump to wireshark on android

android-tcpdump.sh

#!/bin/bash -xe
nc_running()
{
    NC_RUN=$(adb shell busybox ps -w | grep "NCRUN='1'" > /dev/null 2>&1; echo $?)
}

tcpdump_running()
{
    TCP_RUN=$(adb shell busybox ps -w | grep -v "NCRUN='1'" | grep 'TCPRUN="1"' > /dev/null 2>&1; echo $?)
}

if [ "$1" == "start" ]; then
    nc_running
    if [ "$NC_RUN" -eq 0 ]; then
        echo "nc and tcpdump are already started"
        exit 1
    fi
    adb shell "NCRUN='1' /data/local/bin/nc -ll -p 11233 -e sh -c 'TCPRUN=\"1\" /data/local/bin/tcpdump -n -s 0 -w - 2>/dev/null'" &

elif [ "$1" == "stop" ]; then
    NC_GREP=$(adb shell busybox ps -w | grep "NCRUN='1'" > /dev/null 2>&1; echo $?)
    if [ "$NC_GREP" -eq 0 ]; then
        NC_PID=$(adb shell busybox ps -w | grep "NCRUN='1'" | cut -d ' ' -f 1)
        adb shell kill -9 $NC_PID
    else
        echo "nc and tcp aren't started"
    fi
elif [ "$1" == "wireshark" ]; then
    TEMPNAME=/tmp/tmp.$RANDOM-wireand
    TEMPFILE=$(mkfifo $TEMPNAME)
    adb forward tcp:11233 tcp:11233
    nc -d 127.0.0.1 11233 > $TEMPNAME &
    TEMP_PID=$!
    cat $TEMPNAME | wireshark -k -S -i -
    kill $TEMP_PID
    rm $TEMPNAME
else
    echo "Enter start, stop, or wireshark"
    exit 1
fi