GoSilent: The Speedy Silent SYN Scanner

Introducing GoSilent - an enhanced and accelerated version of the Gopacket Synscan. While the traditional scan could take minutes, GoSilent breezes through all 65535 ports in mere seconds.

Ready to give it a whirl? Here's how:

Before you begin, ensure libpcap is installed on your system:

• Ubuntu: Install using sudo apt-get install libpcap-dev
• macOS: Install with brew install libpcap
• Windows: A tad trickier. Native support for libpcap is absent, but Npcap or WinPcap libraries serve as suitable alternatives.

And don't forget, you should have Go set up on your machine.

Getting Started with GoSilent:

# Clone the repository
git clone https://github.com/GobiasSomeCoffeeCo/gosilent.git

# Navigate to the directory
cd gosilent

# Build the application
go build

# Running GoSilent against your target IP

# Ensure you run the binary with root privileges:
sudo ./gosilent -t <target IP address>
# Example:
sudo ./gosilent -t 192.168.1.1

Enhanced Scanning with Interface and Network Flags:

You now have the flexibility to use interface and network flags with GoSilent to customize your scans.

Interface Flags:

-i <Network interface> If empty, it will fallback to system defaults.

Example:

sudo ./gosilent -t 192.168.1.1 -i eno2

Network Flags:

-sF Set FIN flag for TCP
-sS Set SYN flag for TCP
-sA Set ACK flag for TCP
-sU Set URG flag for TCP
-sP Set PSH flag for TCP
-sR Set RST flag for TCP
-sX Set 'XMas Flag' (URG PSH FIN) for TCP

Example:

sudo ./gosilent -t 192.168.1.1 -sF -sA -sP

Feel free to mix and match flags as per your requirements!

Utility Flags:

-v Enable verbose mode. Provides real-time display of detected open ports.
-b Enable a service banner grabber. A simple banner grabber which connects to an open TCP port and prints out anything sent by the listening service within two seconds. Also will attempt to grab the HTTP banner of common listening ports for that service.

Example:

sudo ./gosilent -t 192.168.1.1 -b -v