koolvn · April 21, 2025 07:02 · JoyZzzzz · Nov 6, 2024 · Moskvitch · Nov 21, 2024
diff --git a/WG UDP hack on AsusWRT-Merlin.md b/WG UDP hack on AsusWRT-Merlin.md
diff --git a/wgclient-start b/wgclient-start
 #!/bin/sh

 # Set the number of times a random message would be sent
 NUM_MESSAGES_SENT=3

 # Random message generation params
 block_size=512
 block_count=5

 # Enable exit on error
 set -e

 # Function to generate a random number between 49152 and 65535
 generate_random_port() {
    awk -v min=49152 -v max=65535 'BEGIN { srand(); print int(min + rand() * (max - min + 1)) }'
 }

 # Function to generate a random message and send it
 send_random_message() {
    message=$(dd if=/dev/urandom bs=$block_size count=$block_count 2>/dev/null | tr -dc 'A-Za-z0-9')
    echo "$message" | socat - UDP-SENDTO:"$wg_server:$wg_port",sourceport="$l_port"
    logger -t WireGuardClient -p user.notice "Message sent to WG server $wg_server:$wg_port from client's port $l_port"
    sleep 1
 }

 interface="wgc$1"
 sleep 3
 # Log the start of the script
 logger -t WireGuardClient -p user.notice "Starting junk-udp-hack script"
 logger -t WireGuardClient -p user.notice "Processing WG interface - $interface"

 # Retrieve the server and port
 wg_endpoint=$(wg show "$interface" endpoints 2>/dev/null || echo "")
 if [ -z "$wg_endpoint" ]; then
    logger -s -t WireGuardClient -p user.err "Unable to retrieve endpoint for interface $interface" >&2
    exit 1
 fi

 wg_server=$(echo "$wg_endpoint" | awk '{print $2}' | cut -d':' -f1 2>/dev/null || echo "")
 wg_port=$(echo "$wg_endpoint" | awk '{print $2}' | cut -d':' -f2 2>/dev/null || echo "")

 if [ -z "$wg_server" ] || [ -z "$wg_port" ]; then
    logger -s -t WireGuardClient -p user.err "Unable to extract server or port for interface $interface" >&2
    exit 1
 fi

 l_port=$(generate_random_port)
 while netstat -an | grep -qE '(^|[^0-9])'"$l_port"'([^0-9]|$)'; do
    logger -t WireGuardClient -p user.warn "Port $l_port is already in use. Generating new one"
    sleep 1
    l_port=$(generate_random_port)
 done

 # Send random messages specified number of times
 i=1
 while [ "$i" -le "$NUM_MESSAGES_SENT" ]; do
    send_random_message
    i=$((i + 1))
 done

 # Update the WireGuard interface with the new listen port
 wg set "$interface" listen-port "$l_port"

 logger -t WireGuardClient -p user.notice "Done"
	#!/bin/sh

	# Set the number of times a random message would be sent
	NUM_MESSAGES_SENT=3

	# Random message generation params
	block_size=512
	block_count=5

	# Enable exit on error
	set -e

	# Function to generate a random number between 49152 and 65535
	generate_random_port() {
	awk -v min=49152 -v max=65535 'BEGIN { srand(); print int(min + rand() * (max - min + 1)) }'
	}

	# Function to generate a random message and send it
	send_random_message() {
	message=$(dd if=/dev/urandom bs=$block_size count=$block_count 2>/dev/null \| tr -dc 'A-Za-z0-9')
	echo "$message" \| socat - UDP-SENDTO:"$wg_server:$wg_port",sourceport="$l_port"
	logger -t WireGuardClient -p user.notice "Message sent to WG server $wg_server:$wg_port from client's port $l_port"
	sleep 1
	}

	interface="wgc$1"
	sleep 3
	# Log the start of the script
	logger -t WireGuardClient -p user.notice "Starting junk-udp-hack script"
	logger -t WireGuardClient -p user.notice "Processing WG interface - $interface"

	# Retrieve the server and port
	wg_endpoint=$(wg show "$interface" endpoints 2>/dev/null \|\| echo "")
	if [ -z "$wg_endpoint" ]; then
	logger -s -t WireGuardClient -p user.err "Unable to retrieve endpoint for interface $interface" >&2
	exit 1
	fi

	wg_server=$(echo "$wg_endpoint" \| awk '{print $2}' \| cut -d':' -f1 2>/dev/null \|\| echo "")
	wg_port=$(echo "$wg_endpoint" \| awk '{print $2}' \| cut -d':' -f2 2>/dev/null \|\| echo "")

	if [ -z "$wg_server" ] \|\| [ -z "$wg_port" ]; then
	logger -s -t WireGuardClient -p user.err "Unable to extract server or port for interface $interface" >&2
	exit 1
	fi

	l_port=$(generate_random_port)
	while netstat -an \| grep -qE '(^\|[^0-9])'"$l_port"'([^0-9]\|$)'; do
	logger -t WireGuardClient -p user.warn "Port $l_port is already in use. Generating new one"
	sleep 1
	l_port=$(generate_random_port)
	done

	# Send random messages specified number of times
	i=1
	while [ "$i" -le "$NUM_MESSAGES_SENT" ]; do
	send_random_message
	i=$((i + 1))
	done

	# Update the WireGuard interface with the new listen port
	wg set "$interface" listen-port "$l_port"

	logger -t WireGuardClient -p user.notice "Done"