netgo

A tool like netcat but may be better.

Functions

• Listen local port
• Connect to ip:port
• Transform command to remote machine
• "Fake" port forwarding

How to install it

Install go first.

After you install go and config it well:

go get github.com/grt1st/netgo
go build github.com/grt1st/netgo
./netgo

How to use it

1. Basic mode:

• Server mode: ./netgo -l -p 6666
• Client mode: ./netgo -a localhost -p 6666

You can use the modes just the way you use in netcat.

2. You can use it to transform file also:

./netgo -l -p 6666 > 2.txt
cat 1.txt | ./netgo -a localhost -p 6666

3. Also use it to transform shell:

Forward shell：

./netgo -l -p 6666
./netgo -a localhost -p 6666 -e /bin/bash

Reverse shell：

./netgo -l -p 6666 -e /bin/bash
./netgo -a localhost -p 6666

Another way:

bash -c "bash -i &>/dev/tcp/localhost/6666 0>&1"
./netgo -l -p 6666

4. What's more, try it:

./netgo -a www.baidu.com -p 80 -html

5. Port forwarding

The first: Listen two port at the same time, and two ports are connected:

./netgo -a localhost -p 6666 -p 6667

Use it when you don't have public ip address:

./netgo -a xx.xx.xx.xx -p 6666 -e /bin/bash
./netgo -a xx.xx.xx.xx -p 6667

The second: Forward your local port to the remote machine which has a public ip address.

./netgo -a localhost -p 6666 -p 6667

And bind you local port forward by:

./netgo -a localhost -p 80 -rhost xx.xx.xx.xx:6666

Then others can visit your port by:

./netgo -a xx.xx.xx.xx -p 6667

Note: The two port forwarding way has a disadvantage: the port can only get 1 client, so I say it's fake :)

To do list

• Rebuild Code
• Specification error message
• Limit client number more effective
• Encrypted message

How to contribute

Fork it and push.