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### **Best tool to look for Windows local privilege escalation vectors:** [**WinPEAS**](https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/winPEAS)
You can learn how to turn this on in [https://sid-500.com/2017/11/07/powershell-enabling-transcription-logging-by-using-group-policy/](https://sid-500.com/2017/11/07/powershell-enabling-transcription-logging-by-using-group-policy/)
It records the pipeline execution details of PowerShell. This includes the commands which are executed including command invocations and some portion of the scripts. It may not have the entire detail of the execution and the output results.\
You can enable this following the link of the last section (Transcript files) but enabling "Module Logging" instead of "Powershell Transcription".
It records block of code as they are executed therefore it captures the complete activity and full content of the script. It maintains the complete audit trail of each activity which can be used later in forensics and to study the malicious behavior. It records all the activity at time of execution thus provides the complete details.
The Script Block logging events can be found in Windows Event viewer under following path: _Application and Sevices Logs > Microsoft > Windows > Powershell > Operational_\
In orther to exploit this vulnerabilities you can use tools like: [Wsuxploit](https://github.com/pimps/wsuxploit), [pyWSUS ](https://github.com/GoSecure/pywsus)- These are MiTM weaponized exploits scripts to inject 'fake' updates into non-SSL WSUS traffic.
[**Read the complete report here**](https://www.gosecure.net/blog/2020/09/08/wsus-attacks-part-2-cve-2020-1013-a-windows-10-local-privilege-escalation-1-day/).\
Basically, this is the flaw that this bug exploits:
> If we have the power to modify our local user proxy, and Windows Updates uses the proxy configured in Internet Explorer’s settings, we therefore have the power to run [PyWSUS](https://github.com/GoSecure/pywsus) locally to intercept our own traffic and run code as an elevated user on our asset.
>
> Furthermore, since the WSUS service uses the current user’s settings, it will also use its certificate store. If we generate a self-signed certificate for the WSUS hostname and add this certificate into the current user’s certificate store, we will be able to intercept both HTTP and HTTPS WSUS traffic. WSUS uses no HSTS-like mechanisms to implement a trust-on-first-use type validation on the certificate. If the certificate presented is trusted by the user and has the correct hostname, it will be accepted by the service.
This is essentially a universal no-fix **local privilege escalation** in windows **domain** environments where **LDAP signing is not enforced,** where the **user has self rights** (to configure **RBCD**) and where the **user can create computers in the domain.**\
Even if the attack is For more information about the flow of the attack check [https://research.nccgroup.com/2019/08/20/kerberos-resource-based-constrained-delegation-when-an-image-change-leads-to-a-privilege-escalation/](https://research.nccgroup.com/2019/08/20/kerberos-resource-based-constrained-delegation-when-an-image-change-leads-to-a-privilege-escalation/)
**If** these 2 registers are **enabled** (value is **0x1**), then users of any privilege can **install** (execute) `*.msi` files as NT AUTHORITY\\**SYSTEM**.
Use the `Write-UserAddMSI` command from power-up to create inside the current directory a Windows MSI binary to escalate privileges. This script writes out a precompiled MSI installer that prompts for a user/group addition (so you will need GIU access):
Read this tutorial to learn how to create a MSI wrapper using this tools. Note that you can wrap a "**.bat**" file if you **just** want to **execute****command lines**
**LAPS** allows you to **manage the local Administrator password** (which is **randomised**, unique, and **changed regularly**) on domain-joined computers. These passwords are centrally stored in Active Directory and restricted to authorised users using ACLs. Passwords are protected in transit from the client to the server using Kerberos v5 and AES.
When using LAPS, 2 new attributes appear in the computer objects of the domain: _ms-msc-AdmPwd_ and _ms-mcs-AdmPwdExpirationTime._ These attributes contains the plain-text admin password and the expiration time. Then, in a domain environment, it could be interesting to check which users can read these attributes...
Microsoft in **Windows 8.1 and later** has provided additional protection for the LSA to **prevent** untrusted processes from being able to **read its memory** or to inject code.\
**Credential Guard** is a new feature in Windows 10 (Enterprise and Education edition) that helps to protect your credentials on a machine from threats such as pass the hash.\
**Domain credentials** are used by operating system components and are **authenticated** by the **Local****Security Authority** (LSA). Typically, domain credentials are established for a user when a registered security package authenticates the user's logon data.\
UAC is used to allow an **administrator user to not give administrator privileges to each process executed**. This is **achieved using default** the **low privileged token** of the user.\
If you **belongs to some privileged group you may be able to escalate privileges**. Learn about privileged groups and how to abuse them to escalate privileges here:
Check if you can **overwrite some binary running** or if you have write permissions of the binary folder to exploit possible [**DLL Hijacking attacks**](dll-hijacking.md):
Always check for possible [**electron/cef/chromium debuggers** running, you could abuse it to escalate privileges](../../linux-hardening/privilege-escalation/electron-cef-chromium-debugger-abuse.md).
You can create a memory dump of a running process using **procdump** from sysinternals. Services like FTP have the **credentials in clear text in memory**, try to dump the memory and read the credentials.
If the group "Authenticated users" has **SERVICE\_ALL\_ACCESS** in a service, then it can modify the binary that is being executed by the service. To modify it and execute **nc** you can do:
**Check if you can modify the binary that is executed by a service** or if you have **write permissions on the folder** where the binary is located ([**DLL Hijacking**](dll-hijacking.md))**.**\
You can **check** your **permissions** over a service **registry** doing:
```bash
reg query hklm\System\CurrentControlSet\Services /s /v imagepath #Get the binary paths of the services
#Try to write every service with its current content (to check if you have write permissions)
for /f %a in ('reg query hklm\system\currentcontrolset\services') do del %temp%\reg.hiv 2>nul & reg save %a %temp%\reg.hiv 2>nul && reg restore %a %temp%\reg.hiv 2>nul && echo You can modify %a
Check if **Authenticated Users** or **NT AUTHORITY\INTERACTIVE** have FullControl. In that case you can change the binary that is going to be executed by the service.
If you have this permission over a registry this means to **you can create sub registries from this one**. In case of Windows services this is **enough to execute arbitrary code:**
It's possible to indicate Windows what it should do[ when executing a service this fails](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc753662\(v=ws.11\)?redirectedfrom=MSDN). If that setting is pointing a binary and this binary can be overwritten you may be able to escalate privileges.
Check **permissions of the binaries** (maybe you can overwrite one and escalate privileges) and of the **folders** ([DLL Hijacking](dll-hijacking.md)).
Check if you can modify some config file to read some special file or if you can modify some binary that is going to be executed by an Administrator account (schedtasks).
If you get root user you can listen on any port (the first time you use `nc.exe` to listen on a port it will ask via GUI if `nc` should be allowed by the firewall).
You can explore the `WSL` filesystem in the folder `C:\Users\%USERNAME%\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs\`
From [https://www.neowin.net/news/windows-7-exploring-credential-manager-and-windows-vault](https://www.neowin.net/news/windows-7-exploring-credential-manager-and-windows-vault)\
The Windows Vault stores user credentials for servers, websites and other programs that **Windows** can **log in the users automaticall**y. At first instance, this might look like now users can store their Facebook credentials, Twitter credentials, Gmail credentials etc., so that they automatically log in via browsers. But it is not so.
Windows Vault stores credentials that Windows can log in the users automatically, which means that any **Windows application that needs credentials to access a resource** (server or a website) **can make use of this Credential Manager**& Windows Vault and use the credentials supplied instead of users entering the username and password all the time.
Unless the applications interact with Credential Manager, I don't think it is possible for them to use the credentials for a given resource. So, if your application wants to make use of the vault, it should somehow **communicate with the credential manager and request the credentials for that resource** from the default storage vault.
Then you can use `runas` with the `/savecred` options in order to use the saved credentials. The following example is calling a remote binary via an SMB share.
Note that mimikatz, lazagne, [credentialfileview](https://www.nirsoft.net/utils/credentials\_file\_view.html), [VaultPasswordView](https://www.nirsoft.net/utils/vault\_password\_view.html), or from [Empire Powershells module](https://github.com/EmpireProject/Empire/blob/master/data/module\_source/credentials/dumpCredStore.ps1).
In theory, the Data Protection API can enable symmetric encryption of any kind of data; in practice, its primary use in the Windows operating system is to perform symmetric encryption of asymmetric private keys, using a user or system secret as a significant contribution of entropy.
**DPAPI allows developers to encrypt keys using a symmetric key derived from the user's logon secrets**, or in the case of system encryption, using the system's domain authentication secrets.
The DPAPI keys used for encrypting the user's RSA keys are stored under `%APPDATA%\Microsoft\Protect\{SID}` directory, where {SID} is the [Security Identifier](https://en.wikipedia.org/wiki/Security\_Identifier) of that user. **The DPAPI key is stored in the same file as the master key that protects the users private keys**. It usually is 64 bytes of random data. (Notice that this directory is protected so you cannot list it using`dir` from the cmd, but you can list it from PS).
Installers are **run with SYSTEM privileges**, many are vulnerable to **DLL Sideloading (Info from** [**https://github.com/enjoiz/Privesc**](https://github.com/enjoiz/Privesc)**).**
reg query "HKCU\Software\SimonTatham\PuTTY\Sessions" /s | findstr "HKEY_CURRENT_USER HostName PortNumber UserName PublicKeyFile PortForwardings ConnectionSharing ProxyPassword ProxyUsername" #Check the values saved in each session, user/password could be there
SSH private keys can be stored inside the registry key `HKCU\Software\OpenSSH\Agent\Keys` so you should check if there is anything interesting in there:
If you find any entry inside that path it will probably be a saved SSH key. It is stored encrypted but can be easily decrypted using [https://github.com/ropnop/windows\_sshagent\_extract](https://github.com/ropnop/windows\_sshagent\_extract).\
More information about this technique here: [https://blog.ropnop.com/extracting-ssh-private-keys-from-windows-10-ssh-agent/](https://blog.ropnop.com/extracting-ssh-private-keys-from-windows-10-ssh-agent/)
It looks like this technique isn't valid anymore. I tried to create some ssh keys, add them with `ssh-add` and login via ssh to a machine. The registry HKCU\Software\OpenSSH\Agent\Keys doesn't exist and procmon didn't identify the use of `dpapi.dll` during the asymmetric key authentication.
Before KB2928120 (see MS14-025), some Group Policy Preferences could be configured with a custom account. This feature was mainly used to deploy a custom local administrator account on a group of machines. There were two problems with this approach though. First, since the Group Policy Objects are stored as XML files in SYSVOL, any domain user can read them. The second problem is that the password set in these GPPs is AES256-encrypted with a default key, which is publicly documented. This means that any authenticated user could potentially access very sensitive data and elevate their privileges on their machine or even the domain. This function will check whether any locally cached GPP file contains a non-empty "cpassword" field. If so, it will decrypt it and return a custom PS object containing some information about the GPP along with the location of the file.
Search in `C:\ProgramData\Microsoft\Group Policy\history` or in _**C:\Documents and Settings\All Users\Application Data\Microsoft\Group Policy\history** (previous to W Vista)_ for these files:
You can always **ask the user to enter his credentials of even the credentials of a different user** if you think he can know them (notice that **asking** the client directly for the **credentials** is really **risky**):
To **recover passwords** saved by several programs you can use: [http://www.nirsoft.net/password\_recovery\_tools.html](http://www.nirsoft.net/password\_recovery\_tools.html)
[**MSF-Credentials Plugin**](https://github.com/carlospolop/MSF-Credentials) **is a msf** plugin I have created this plugin to **automatically execute every metasploit POST module that searches for credentials** inside the victim.\
[**Winpeas**](https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite) automatically search for all the files containing passwords mentioned in this page.\
The tool [**SessionGopher**](https://github.com/Arvanaghi/SessionGopher) search for **sessions**, **usernames** and **passwords** of several tools that save this data in clear text (PuTTY, WinSCP, FileZilla, SuperPuTTY, and RDP)
Imagine that **a process running as SYSTEM open a new process** (`OpenProcess()`) with **full access**. The same process **also create a new process** (`CreateProcess()`) **with low privileges but inheriting all the open handles of the main process**.\
Then, if you have **full access to the low privileged process**, you can grab the **open handle to the privileged process created** with `OpenProcess()` and **inject a shellcode**.\
[Read this example for more information about **how to detect and exploit this vulnerability**.](leaked-handle-exploitation.md)\
[Read this **other post for a more complete explanation on how to test and abuse more open handlers of processes and threads inherited with different levels of permissions (not only full access)**](http://dronesec.pw/blog/2019/08/22/exploiting-leaked-process-and-thread-handles/).
A `pipe` is a block of shared memory that processes can use for communication and data exchange.
`Named Pipes` is a Windows mechanism that enables two unrelated processes to exchange data between themselves, even if the processes are located on two different networks. It's very similar to client/server architecture as notions such as `a named pipe server` and a named `pipe client` exist.
When a **client writes on a pipe**, the **server** that created the pipe can **impersonate** the **client** if it has **SeImpersonate** privileges. Then, if you can find a **privileged process that is going to write on any pipe that you can impersonate**, you could be able to **escalate privileges** impersonating that process after it writes inside your created pipe. [**You can read this to learn how to perform this attack**](named-pipe-client-impersonation.md)**.**
[**Read this to learn about Integrity Levels**](integrity-levels.md) **and** [**this to learn what is UAC**](../authentication-credentials-uac-and-efs.md#uac)**, then read how to**[ **bypass it**](../authentication-credentials-uac-and-efs.md#uac)**.**
From a High Integrity process you could try to **enable the AlwaysInstallElevated registry entries** and **install** a reverse shell using a _**.msi**_ wrapper.\
If you have those token privileges (probably you will find this in an already High Integrity process), you will be able to **open almost any process** (not protected processes) with the SeDebug privilege, **copy the token** of the process, and create an **arbitrary process with that token**.\
Using this technique is usually **selected any process running as SYSTEM with all the token privileges** (_yes, you can find SYSTEM processes without all the token privileges_).\
This technique is used by meterpreter to escalate in `getsystem`. The technique consists on **creating a pipe and then create/abuse a service to write on that pipe**. Then, the **server** that created the pipe using the **`SeImpersonate`** privilege will be able to **impersonate the token** of the pipe client (the service) obtaining SYSTEM privileges.\
If you want to read an example of [**how to go from high integrity to System using name pipes you should read this**](from-high-integrity-to-system-with-name-pipes.md).
If you manages to **hijack a dll** being **loaded** by a **process** running as **SYSTEM** you will be able to execute arbitrary code with those permissions. Therefore Dll Hijacking is also useful to this kind of privilege escalation, and, moreover, if far **more easy to achieve from a high integrity process** as it will have **write permissions** on the folders used to load dlls.\
**You can** [**learn more about Dll hijacking here**](dll-hijacking.md)**.**
**Best tool to look for Windows local privilege escalation vectors:** [**WinPEAS**](https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/winPEAS)
[**PowerSploit-Privesc(PowerUP)**](https://github.com/PowerShellMafia/PowerSploit) **-- Check for misconfigurations and sensitive files (**[**check here**](../../windows/windows-local-privilege-escalation/broken-reference/)**). Detected.**\
[**JAWS**](https://github.com/411Hall/JAWS) **-- Check for some possible misconfigurations and gather info (**[**check here**](../../windows/windows-local-privilege-escalation/broken-reference/)**).**\
[**privesc** ](https://github.com/enjoiz/Privesc)**-- Check for misconfigurations**\
[**SessionGopher**](https://github.com/Arvanaghi/SessionGopher) **-- It extracts PuTTY, WinSCP, SuperPuTTY, FileZilla, and RDP saved session information. Use -Thorough in local.**\
[**Invoke-WCMDump**](https://github.com/peewpw/Invoke-WCMDump) **-- Extracts crendentials from Credential Manager. Detected.**\
[**DomainPasswordSpray**](https://github.com/dafthack/DomainPasswordSpray) **-- Spray gathered passwords across domain**\
[**Inveigh**](https://github.com/Kevin-Robertson/Inveigh) **-- Inveigh is a PowerShell ADIDNS/LLMNR/mDNS/NBNS spoofer and man-in-the-middle tool.**\
[**WindowsEnum**](https://github.com/absolomb/WindowsEnum/blob/master/WindowsEnum.ps1) **-- Basic privesc Windows enumeration**\
[~~**Sherlock**~~](https://github.com/rasta-mouse/Sherlock) **\~\~**\~\~ -- Search for known privesc vulnerabilities (DEPRECATED for Watson)\
[**Watson**](https://github.com/rasta-mouse/Watson) -- Search for known privesc vulnerabilities (needs to be compiled using VisualStudio) ([**precompiled**](https://github.com/carlospolop/winPE/tree/master/binaries/watson))\
[**SeatBelt**](https://github.com/GhostPack/Seatbelt) -- Enumerates the host searching for misconfigurations (more a gather info tool than privesc) (needs to be compiled) **(**[**precompiled**](https://github.com/carlospolop/winPE/tree/master/binaries/seatbelt)**)**\
[**LaZagne**](https://github.com/AlessandroZ/LaZagne) **-- Extracts credentials from lots of softwares (precompiled exe in github)**\
[~~**Beroot**~~](https://github.com/AlessandroZ/BeRoot) **\~\~**\~\~ -- Check for misconfiguration (executable precompiled in github). Not recommended. It does not work well in Win10.\
[~~**Windows-Privesc-Check**~~](https://github.com/pentestmonkey/windows-privesc-check) -- Check for possible misconfigurations (exe from python). Not recommended. It does not work well in Win10.
[**winPEASbat** ](https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/winPEAS)-- Tool created based in this post (it does not need accesschk to work properly but it can use it).
[**Windows-Exploit-Suggester**](https://github.com/GDSSecurity/Windows-Exploit-Suggester) -- Reads the output of **systeminfo** and recommends working exploits (local python)\
[**Windows Exploit Suggester Next Generation**](https://github.com/bitsadmin/wesng) -- Reads the output of **systeminfo** andrecommends working exploits (local python)
You have to compile the project using the correct version of .NET ([see this](https://rastamouse.me/2018/09/a-lesson-in-.net-framework-versions/)). To see the installed version of .NET on the victim host you can do:
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