PcAnywhere Login Scanner - Metasploit


This page contains detailed information about how to use the auxiliary/scanner/pcanywhere/pcanywhere_login metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: PcAnywhere Login Scanner
Module: auxiliary/scanner/pcanywhere/pcanywhere_login
Source code: modules/auxiliary/scanner/pcanywhere/pcanywhere_login.rb
Disclosure date: -
Last modification time: 2020-09-22 02:56:51 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 5631
List of CVEs: CVE-1999-0502

This module will test pcAnywhere logins on a range of machines and report successful logins.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/pcanywhere/pcanywhere_login
msf auxiliary(pcanywhere_login) > show options
    ... show and set options ...
msf auxiliary(pcanywhere_login) > set RHOSTS ip-range
msf auxiliary(pcanywhere_login) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(pcanywhere_login) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(pcanywhere_login) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(pcanywhere_login) > set RHOSTS file:/tmp/ip_list.txt

Required Options

  • RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

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Msfconsole Usage

Here is how the scanner/pcanywhere/pcanywhere_login auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/pcanywhere/pcanywhere_login

msf6 auxiliary(scanner/pcanywhere/pcanywhere_login) > show info

       Name: PcAnywhere Login Scanner
     Module: auxiliary/scanner/pcanywhere/pcanywhere_login
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  theLightCosine <[email protected]>

Check supported:
  No

Basic options:
  Name              Current Setting  Required  Description
  ----              ---------------  --------  -----------
  BLANK_PASSWORDS   false            no        Try blank passwords for all users
  BRUTEFORCE_SPEED  5                yes       How fast to bruteforce, from 0 to 5
  DB_ALL_CREDS      false            no        Try each user/password couple stored in the current database
  DB_ALL_PASS       false            no        Add all passwords in the current database to the list
  DB_ALL_USERS      false            no        Add all users in the current database to the list
  PASSWORD                           no        A specific password to authenticate with
  PASS_FILE                          no        File containing passwords, one per line
  RHOSTS                             yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT             5631             yes       The target port (TCP)
  STOP_ON_SUCCESS   false            yes       Stop guessing when a credential works for a host
  THREADS           1                yes       The number of concurrent threads (max one per host)
  USERNAME                           no        A specific username to authenticate as
  USERPASS_FILE                      no        File containing users and passwords separated by space, one pair per line
  USER_AS_PASS      false            no        Try the username as the password for all users
  USER_FILE                          no        File containing usernames, one per line
  VERBOSE           true             yes       Whether to print output for all attempts

Description:
  This module will test pcAnywhere logins on a range of machines and 
  report successful logins.

References:
  https://nvd.nist.gov/vuln/detail/CVE-1999-0502

Module Options

This is a complete list of options available in the scanner/pcanywhere/pcanywhere_login auxiliary module:

msf6 auxiliary(scanner/pcanywhere/pcanywhere_login) > show options

Module options (auxiliary/scanner/pcanywhere/pcanywhere_login):

   Name              Current Setting  Required  Description
   ----              ---------------  --------  -----------
   BLANK_PASSWORDS   false            no        Try blank passwords for all users
   BRUTEFORCE_SPEED  5                yes       How fast to bruteforce, from 0 to 5
   DB_ALL_CREDS      false            no        Try each user/password couple stored in the current database
   DB_ALL_PASS       false            no        Add all passwords in the current database to the list
   DB_ALL_USERS      false            no        Add all users in the current database to the list
   PASSWORD                           no        A specific password to authenticate with
   PASS_FILE                          no        File containing passwords, one per line
   RHOSTS                             yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT             5631             yes       The target port (TCP)
   STOP_ON_SUCCESS   false            yes       Stop guessing when a credential works for a host
   THREADS           1                yes       The number of concurrent threads (max one per host)
   USERNAME                           no        A specific username to authenticate as
   USERPASS_FILE                      no        File containing users and passwords separated by space, one pair per line
   USER_AS_PASS      false            no        Try the username as the password for all users
   USER_FILE                          no        File containing usernames, one per line
   VERBOSE           true             yes       Whether to print output for all attempts

Advanced Options

Here is a complete list of advanced options supported by the scanner/pcanywhere/pcanywhere_login auxiliary module:

msf6 auxiliary(scanner/pcanywhere/pcanywhere_login) > show advanced

Module advanced options (auxiliary/scanner/pcanywhere/pcanywhere_login):

   Name                  Current Setting  Required  Description
   ----                  ---------------  --------  -----------
   CHOST                                  no        The local client address
   CPORT                                  no        The local client port
   ConnectTimeout        10               yes       Maximum number of seconds to establish a TCP connection
   MaxGuessesPerService  0                no        Maximum number of credentials to try per service instance. If set to zero or a non-number, this option will not be used.
   MaxGuessesPerUser     0                no        Maximum guesses for a particular username for the service instance. Note that users are considered unique among different services, so a user at 10.1.1.1:22 is different from one at 10.2.2.2:
                                                    22, and both will be tried up to the MaxGuessesPerUser limit. If set to zero or a non-number, this option will not be used.
   MaxMinutesPerService  0                no        Maximum time in minutes to bruteforce the service instance. If set to zero or a non-number, this option will not be used.
   PASSWORD_SPRAY        false            yes       Reverse the credential pairing order. For each password, attempt every possible user.
   Proxies                                no        A proxy chain of format type:host:port[,type:host:port][...]
   REMOVE_PASS_FILE      false            yes       Automatically delete the PASS_FILE on module completion
   REMOVE_USERPASS_FILE  false            yes       Automatically delete the USERPASS_FILE on module completion
   REMOVE_USER_FILE      false            yes       Automatically delete the USER_FILE on module completion
   SSL                   false            no        Negotiate SSL/TLS for outgoing connections
   SSLCipher                              no        String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
   SSLVerifyMode         PEER             no        SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
   SSLVersion            Auto             yes       Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
   ShowProgress          true             yes       Display progress messages during a scan
   ShowProgressPercent   10               yes       The interval in percent that progress should be shown
   TRANSITION_DELAY      0                no        Amount of time (in minutes) to delay before transitioning to the next user in the array (or password when PASSWORD_SPRAY=true)
   WORKSPACE                              no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the scanner/pcanywhere/pcanywhere_login module can do:

msf6 auxiliary(scanner/pcanywhere/pcanywhere_login) > show actions

Auxiliary actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the scanner/pcanywhere/pcanywhere_login auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(scanner/pcanywhere/pcanywhere_login) > show evasion

Module evasion options:

   Name                Current Setting  Required  Description
   ----                ---------------  --------  -----------
   TCP::max_send_size  0                no        Maxiumum tcp segment size.  (0 = disable)
   TCP::send_delay     0                no        Delays inserted before every send.  (0 = disable)

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Error Messages

This module may fail with the following error messages:

Error Messages

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Problem Sending Login: <RES.INSPECT>

Here is a relevant code snippet related to the "Problem Sending Login: <RES.INSPECT>" error message:

108:	      res = nsock.get_once(-1,5)
109:	    end
110:	
111:	    # Check if we are now at the password prompt
112:	    unless res and res.include? 'Enter password'
113:	      print_error("Problem Sending Login: #{res.inspect}")
114:	      return :abort
115:	    end
116:	
117:	    epass = encryption_header(encrypt(pass))
118:	    nsock.put(epass)

Handshake(1) failed on Host <IP> aborting. Error: <RES.INSPECT>

Here is a relevant code snippet related to the "Handshake(1) failed on Host <IP> aborting. Error: <RES.INSPECT>" error message:

131:	  def pca_handshake(ip, nsock=self.sock)
132:	    print_status('Handshaking with the pcAnywhere service')
133:	    nsock.put("\x00\x00\x00\x00")
134:	    res = nsock.get_once(-1,5)
135:	    unless res and res.include? 'Please press <Enter>'
136:	      print_error("Handshake(1) failed on Host #{ip} aborting. Error: #{res.inspect}")
137:	      return :handshake_failed
138:	    end
139:	
140:	    nsock.put("\x6F\x06\xff")
141:	    res = nsock.get_once(-1,5)

Handshake(2) failed on Host <IP> aborting. Error: <RES.INSPECT>

Here is a relevant code snippet related to the "Handshake(2) failed on Host <IP> aborting. Error: <RES.INSPECT>" error message:

138:	    end
139:	
140:	    nsock.put("\x6F\x06\xff")
141:	    res = nsock.get_once(-1,5)
142:	    unless res and res.include? "\x78\x02\x1b\x61"
143:	      print_error("Handshake(2) failed on Host #{ip} aborting. Error: #{res.inspect}")
144:	      return :handshake_failed
145:	    end
146:	
147:	    nsock.put("\x6f\x61\x00\x09\x00\xfe\x00\x00\xff\xff\x00\x00\x00\x00")
148:	    res = nsock.get_once(-1,5)

Handshake(3) failed on Host <IP> aborting. Error: <RES.INSPECT>

Here is a relevant code snippet related to the "Handshake(3) failed on Host <IP> aborting. Error: <RES.INSPECT>" error message:

145:	    end
146:	
147:	    nsock.put("\x6f\x61\x00\x09\x00\xfe\x00\x00\xff\xff\x00\x00\x00\x00")
148:	    res = nsock.get_once(-1,5)
149:	    unless res and res == "\x1b\x62\x00\x02\x00\x00\x00"
150:	      print_error("Handshake(3) failed on Host #{ip} aborting. Error: #{res.inspect}")
151:	      return :handshake_failed
152:	    end
153:	
154:	    nsock.put("\x6f\x62\x01\x02\x00\x00\x00")
155:	    res = nsock.get_once(-1,5)

Handshake(4) failed on Host <IP> aborting. Error: <RES.INSPECT>

Here is a relevant code snippet related to the "Handshake(4) failed on Host <IP> aborting. Error: <RES.INSPECT>" error message:

152:	    end
153:	
154:	    nsock.put("\x6f\x62\x01\x02\x00\x00\x00")
155:	    res = nsock.get_once(-1,5)
156:	    unless res and res.include? "\x00\x7D\x08"
157:	      print_error("Handshake(4) failed on Host #{ip} aborting. Error: #{res.inspect}")
158:	      return :handshake_failed
159:	    end
160:	
161:	    res = nsock.get_once(-1,5) unless pca_at_login?(res)
162:	    unless pca_at_login?(res)

Handshake(5) failed on Host <IP> aborting. Error: <RES.INSPECT>

Here is a relevant code snippet related to the "Handshake(5) failed on Host <IP> aborting. Error: <RES.INSPECT>" error message:

158:	      return :handshake_failed
159:	    end
160:	
161:	    res = nsock.get_once(-1,5) unless pca_at_login?(res)
162:	    unless pca_at_login?(res)
163:	      print_error("Handshake(5) failed on Host #{ip} aborting. Error: #{res.inspect}")
164:	      return :handshake_failed
165:	    end
166:	  end
167:	
168:	  def pca_at_login?(res)

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References

See Also

Check also the following modules related to this module:

Related Nessus plugins:

Authors

  • theLightCosine

Version

This page has been produced using Metasploit Framework version 6.1.29-dev. For more modules, visit the Metasploit Module Library.

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