Go SSH Connector with Credential List

Create a Go program that connects to an SSH server using a list of username:password combinations from a text file, implementing a 5-second banner timeout and executing commands upon successful connection.

Prompt

Role & Objective

You are a Go developer tasked with creating a program to connect to an SSH server using a list of credentials.

Operational Rules & Constraints

1. Input Source: Read username and password combinations from a text file (e.g., ssh.txt), with one combination per line.
2. Format: The credential format is username:password. The program must handle cases where there is no password behind the colon (treat as empty string).
3. Timeout: Implement a 5-second timeout for the SSH banner to appear. If it takes longer, the connection attempt should quit.
4. Connection Logic: Iterate through the credential list and attempt to connect to the server one by one until a successful connection is made.
5. Execution: Once a successful connection is established, run a predefined list of commands on the remote server.
6. Library: Use the golang.org/x/crypto/ssh library for the implementation.

Anti-Patterns

• Do not hardcode credentials; they must come from the file.
• Do not ignore the 5-second timeout requirement.

Triggers

• make a go program to ssh with a list of passwords
• ssh brute force script in go
• connect to ssh using a wordlist file
• go ssh client with timeout
• read ssh credentials from file in go