Nmap deluge-rpc-brute NSE Script

Script Overview

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Script source code: https://github.com/nmap/nmap/tree/master/scripts/deluge-rpc-brute.nse
Script categories: intrusive, brute
Target service / protocol: deluge-rpc
Target network port(s): 58846
List of CVEs: -

Script Description

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The deluge-rpc-brute.nse script performs brute force password auditing against the DelugeRPC daemon.

Deluge-rpc-brute NSE Script Arguments

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This is a full list of arguments supported by the deluge-rpc-brute.nse script:

creds.global

Credentials to be returned by Credentials.getCredentials regardless of the service.

creds.[service]

Credentials to be returned by Credentials.getCredentials for [service]. E.g. creds.http=admin:password

passdb

The filename of an alternate password database. Default: nselib/data/passwords.lst

unpwdb.passlimit

The maximum number of passwords passwords will return (default unlimited).

unpwdb.timelimit

The maximum amount of time that any iterator will run before stopping. The value is in seconds by default and you can follow it with ms, s, m, or h for milliseconds, seconds, minutes, or hours. For example, unpwdb.timelimit=30m or unpwdb.timelimit=.5h for 30 minutes. The default depends on the timing template level (see the module description). Use the value 0 to disable the time limit.

unpwdb.userlimit

The maximum number of usernames usernames will return (default unlimited).

userdb

The filename of an alternate username database. Default: nselib/data/usernames.lst

brute.credfile

A file containing username and password pairs delimited by '/'

brute.delay

The number of seconds to wait between guesses (default: 0)

brute.emptypass

Guess an empty password for each user (default: false)

brute.firstonly

Stop guessing after first password is found (default: false)

brute.guesses

The number of guesses to perform against each account. (default: 0 (unlimited)). The argument can be used to prevent account lockouts.

brute.mode

Can be user, pass or creds and determines what mode to run the engine in.

• user - the unpwdb library is used to guess passwords, every password Password is tried for each user. (The user iterator is in the outer loop)
• pass - the unpwdb library is used to guess passwords, each password Is tried for every user. (The password iterator is in the outer loop)
• creds - a set of credentials (username and password pairs) are Guessed against the service. This allows for lists of known or common username and password combinations to be tested. If no mode is specified and the script has not added any custom iterator the pass mode will be enabled.

brute.passonly

Iterate over passwords only for services that provide only a password for authentication. (default: false)

brute.retries

The number of times to retry if recoverable failures occur. (default: 2)

brute.start

The number of threads the engine will start with. (default: 5).

brute.threads

The number of initial worker threads, the number of active threads will be automatically adjusted.

brute.unique

Make sure that each password is only guessed once (default: true)

brute.useraspass

Guess the username as password for each user (default: true)

creds.[service]

Credentials to be returned by Credentials.getCredentials for [service]. E.g. creds.http=admin:password

- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=deluge-rpc-brute --script-args creds.global=value,creds.\[service]=value <target>

Deluge-rpc-brute NSE Script Example Usage

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Here's an example of how to use the deluge-rpc-brute.nse script:

nmap --script deluge-rpc-brute -p 58846 <host>

Deluge-rpc-brute NSE Script Example Output

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Here's a sample output from the deluge-rpc-brute.nse script:

PORT      STATE SERVICE REASON  TTL
58846/tcp open  unknown syn-ack 0
| deluge-rpc-brute:
|   Accounts
|     admin:default - Valid credentials
|   Statistics
|_    Performed 8 guesses in 1 seconds, average tps: 8

Deluge-rpc-brute NSE Script Example XML Output

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There is no sample XML output for this module. However, by providing the -oX <file> option, Nmap will produce a XML output and save it in the file.xml file.

Author

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• Claudiu Perta [email protected]>

References

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• https://nmap.org/nsedoc/scripts/deluge-rpc-brute.html
• https://github.com/nmap/nmap/tree/master/scripts/deluge-rpc-brute.nse
• http://git.deluge-torrent.org/deluge/tree/deluge/rencode.py

See Also

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Visit Nmap NSE Library for more scripts.

The deluge-rpc-brute.nse script may fail with the following error messages. Check for the possible causes by using the code snippets highlighted below found in the script source code. This can often times help in identifying the root cause of the problem.

Failed to connect to server

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Here is a relevant code snippet related to the "Failed to connect to server" error message:

98:	    self.socket:set_timeout(
99:	      ((self.host.times and self.host.times.timeout) or 8) * 1000)
100:	
101:	    local status, err = self.socket:connect(self.host, self.port, "ssl")
102:	    if not status then
103:	      return false, brute.Error:new("Failed to connect to server")
104:	    end
105:	
106:	    return true
107:	  end,
108:	

Invalid user

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Here is a relevant code snippet related to the "Invalid user" error message:

110:	    self.socket:close()
111:	  end,
112:	
113:	  login = function(self, username, password)
114:	    if (self.invalid_users[username]) then
115:	      return false, brute.Error:new("Invalid user")
116:	    end
117:	
118:	    local request, err = rencoded_login_request(username, password)
119:	    if not request then
120:	      return false, brute.Error:new(err)

Login error

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Here is a relevant code snippet related to the "Login error" error message:

120:	      return false, brute.Error:new(err)
121:	    end
122:	    local status, err = self.socket:send(zlib.compress(request))
123:	
124:	    if not status then
125:	      return false, brute.Error:new("Login error")
126:	    end
127:	
128:	    local status, response = self.socket:receive()
129:	    if not status  then
130:	

Login error

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Here is a relevant code snippet related to the "Login error" error message:

126:	    end
127:	
128:	    local status, response = self.socket:receive()
129:	    if not status  then
130:	
131:	      return false, brute.Error:new("Login error")
132:	    end
133:	
134:	    response = zlib.decompress(response)
135:	    if response:match("BadLoginError") then
136:	      local error_message = "Login error"

Login error

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Here is a relevant code snippet related to the "Login error" error message:

131:	      return false, brute.Error:new("Login error")
132:	    end
133:	
134:	    response = zlib.decompress(response)
135:	    if response:match("BadLoginError") then
136:	      local error_message = "Login error"
137:	      if response:match("Username does not exist") then
138:	        self.invalid_users[username] = true
139:	        error_message = "Username not found"
140:	      elseif response:match("Password does not match") then
141:	        error_message = "Username not found"

Username not found

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Here is a relevant code snippet related to the "Username not found" error message:

134:	    response = zlib.decompress(response)
135:	    if response:match("BadLoginError") then
136:	      local error_message = "Login error"
137:	      if response:match("Username does not exist") then
138:	        self.invalid_users[username] = true
139:	        error_message = "Username not found"
140:	      elseif response:match("Password does not match") then
141:	        error_message = "Username not found"
142:	      end
143:	      return false, brute.Error:new(error_message)
144:	    end

Username not found

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Here is a relevant code snippet related to the "Username not found" error message:

136:	      local error_message = "Login error"
137:	      if response:match("Username does not exist") then
138:	        self.invalid_users[username] = true
139:	        error_message = "Username not found"
140:	      elseif response:match("Password does not match") then
141:	        error_message = "Username not found"
142:	      end
143:	      return false, brute.Error:new(error_message)
144:	    end
145:	
146:	    return true, creds.Account:new(username, password, creds.State.VALID)

Error: zlib required!

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Here is a relevant code snippet related to the "Error: zlib required!" error message:

152:	}
153:	
154:	action = function(host, port)
155:	
156:	  if not have_zlib then
157:	    return "Error: zlib required!"
158:	  end
159:	
160:	  local invalid_users = {}
161:	  local engine = brute.Engine:new(Driver, host, port, invalid_users)
162: