Bringing Internet Access

Internet Access for Machine B Through A using Rinetd

Scenario/Goal

Machine A and B are compromised to the levels indicated. We require internet access on machine B to elevate privilege and further penetration into the network.

Machine A	Requirements
Level of Compromise	Elevated Privilege
Internet Access	Yes
Software Required	Rinetd Service

Machine B	Requirements
Level of Compromise	User Privilege
Internet Access	No
Softwares

Firewall stops machine B from accessing the internet. There is no restriction between A & B

Machine A

sudo apt update && sudo apt install rinetd
vim /etc/rinetd.conf
0.0.0.0 80 <IP of maching to be accessed> 80 #Include this line in the conf 
sudo service rinetd restart

Machine B

nc -nvv <IP of Machine running Rinetd> 80
GET / HTTP/1.0 #URL to be accessed