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I made every script follow a standard form: it starts with the id, followed by the description. The description is contained in [[ ]] delimiters. The description is in the global description variable, not in a LuaDoc comment. Other LuaDoc information such as @args and @usage follows the description in a comment. The first paragraph of each description is a a short summary of what the script does. More detailed information, if any, is given in following paragraphs. I also improved some wording and formatting in a few cases.
44 lines
832 B
Lua
44 lines
832 B
Lua
id = "Stealth SSH version"
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description = [[
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Connects to an SSH server and retrieves the version banner.
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\n\n
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This typically does not result in any logs of the connection being made.
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]]
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---
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-- @output
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-- 22/tcp open ssh\n
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-- |_ Stealth SSH version: SSH-2.0-OpenSSH_3.9p1\n
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author = "Diman Todorov <diman.todorov@gmail.com>"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"demo"}
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require "shortport"
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portrule = shortport.service("ssh")
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action = function(host, port)
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local result, socket
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local catch = function()
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socket:close()
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end
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local try = nmap.new_try(catch)
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result = ""
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socket = nmap.new_socket()
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try(socket:connect(host.ip, port.number))
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result = try(socket:receive_lines(1));
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try(socket:send(result))
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try(socket:close())
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return (string.gsub(result, "\n", ""))
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end
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