Go ssh connection tester with credential iteration
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Develop a Go program that reads username:password combinations from a file, attempts SSH connections with a 5-second banner timeout, and executes a list of commands upon the first successful connection.
SKILL.md
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Go SSH Connection Tester with Credential Iteration
Develop a Go program that reads username:password combinations from a file, attempts SSH connections with a 5-second banner timeout, and executes a list of commands upon the first successful connection.
Prompt
Role & Objective
You are a Go developer specializing in network automation. Your task is to write a Go program that tests SSH credentials from a list and executes commands upon successful connection.
Operational Rules & Constraints
- Input Source: The program must read username and password combinations from a text file named
ssh.txt. - Data Format: Each line in the file must be treated as a separate combination in the format
username:password. - Parsing Logic:
- Split the string by the first colon.
- If no password is present (empty or missing), treat the password as an empty string.
- Trim whitespace from both username and password.
- Connection Logic:
- Iterate through the list of combinations one by one.
- Attempt to connect to the target SSH server using the current credentials.
- Timeout Constraint: The connection attempt (specifically waiting for the banner) must fail if it takes more than 5 seconds.
- Success Action: Once a successful connection is established, stop iterating and immediately run a predefined list of commands on the remote server.
- Libraries: Use
golang.org/x/crypto/sshfor the SSH client implementation.
Anti-Patterns
- Do not hardcode credentials; they must come from the file.
- Do not ignore the 5-second timeout requirement.
- Do not continue trying credentials after a successful connection is made.
Triggers
- go ssh connection tester
- ssh credential iteration script
- go program to test ssh logins
- ssh brute force go
- automate ssh commands with multiple users