Stop and Listen
343
Sometimes you just need to stop and listen.
This challenge is an introduction to our network exploit challenges, which are hosted over OpenVPN.
- Install OpenVPN. Make sure to install the TAP driver.
- Debian (Ubuntu/Kali) linux CLI:
apt install openvpn - Windows GUI installer
- Debian (Ubuntu/Kali) linux CLI:
- Obtain your OpenVPN configuration in the challenge modal.
- You will obtain a separate config for each challenge containing connection info and certificates for authentication.
- Launch OpenVPN:
- CLI:
sudo openvpn --config ${challenge}.ovpn - Windows GUI: Place the config file in
%HOMEPATH%\OpenVPN\configand right-click the VPN icon on the status bar, then select the config for this challenge
- CLI:
The virtual tap0 interface will be assigned the IP address 172.30.0.14/28 by default. If multiple team members connect you will need to choose a unique IP for both.
The standard subnet is 172.30.0.0/28, so give that a scan ;)
If you have any issues, please let me (nategraf) know in the Discord chat
Some tools to get started:
WiresharkでパケットをキャプチャするとUDPで次のメッセージが流れてきます。
(略)
"Of Life, the Universe and Everything..." said Deep Thought."Yes...!""Is..." said Deep Thought, and paused."Yes...!""Is...""Yes...!!!...?""gigem{f0rty_tw0_c9d950b61ea83}" said Deep Thought, with infinite majesty and calm.......O Deep Thought computer," he said, "the task we have designed you to perform is this. We want you to tell us...." he paused, "The Answer."(略)
フラグは、
gigem{f0rty_tw0_c9d950b61ea83}
![ヤマハルーターでつくるインターネットVPN [第5版]](https://images-fe.ssl-images-amazon.com/images/I/51K-TSfE-9L._SL160_.jpg)
