├── .github └── workflows │ └── publish-release.yaml ├── Invoke-ArgFuscator.ps1 ├── Invoke-ArgFuscator.psd1 ├── Invoke-ArgFuscator.psm1 ├── LICENSE ├── Modifiers ├── CharacterInsertion.psm1 ├── FilePathTransformer.psm1 ├── OptionCharSubstitution.psm1 ├── QuoteInsertion.psm1 ├── RandomCase.psm1 ├── Regex.psm1 ├── Sed.psm1 ├── Shorthands.psm1 └── UrlTransformer.psm1 ├── README.md └── Types ├── Modifier.psm1 ├── Sed.psm1 └── Token.psm1 /.github/workflows/publish-release.yaml: -------------------------------------------------------------------------------- 1 | name: Publish PowerShell Module 2 | on: 3 | release: 4 | types: [created] 5 | 6 | jobs: 7 | publish-powershell-gallery: 8 | runs-on: ubuntu-latest 9 | steps: 10 | - name: checkout 11 | uses: actions/checkout@v2 12 | - name: publishing 13 | run: | 14 | curl -L https://github.com/wietze/ArgFuscator.net/archive/refs/heads/main.zip -o ArgFuscator.zip && unzip ArgFuscator.zip && rm ArgFuscator.zip 15 | mv ./ArgFuscator.net-main/models . 16 | rm -rf ./ArgFuscator.net-main 17 | rm ./Invoke-ArgFuscator.ps1 18 | Publish-Module -Path '.' -NuGetApiKey ${{ secrets.PGALLERY }} 19 | shell: pwsh 20 | -------------------------------------------------------------------------------- /Invoke-ArgFuscator.ps1: -------------------------------------------------------------------------------- 1 | Import-Module ./Invoke-ArgFuscator.psm1 2 | 3 | $n_default = 1 4 | if ($args.Length -eq 0) { 5 | Write-Host "░█░█▄░█░█▒█░▄▀▄░█▄▀▒██▀░▒░" -NoNewline 6 | Write-Host " ▄▀▄▒█▀▄░▄▀▒▒" -NoNewline -f Blue 7 | Write-Host "█▀░█▒█░▄▀▀░▄▀▀▒▄▀▄░▀█▀░▄▀▄▒█▀▄░" -f DarkGray 8 | Write-Host "░█░█▒▀█░▀▄▀░▀▄▀░█▒█░█▄▄░▀▀░" -NoNewline 9 | Write-Host "█▀█░█▀▄░▀▄█░" -NoNewline -f Blue 10 | Write-Host "█▀░▀▄█▒▄██░▀▄▄░█▀█░▒█▒░▀▄▀░█▀▄░" -f DarkGray 11 | Write-Host "By " -NoNewline 12 | Write-Host "@Wietze" -f Blue -NoNewline 13 | Write-Host ", (c) 2024-2025`n" 14 | 15 | $InputFile = Read-Host "Path to configuration file" 16 | if (!($n = Read-Host "Number of commands to generate [default=$n_default]")) { $n = $n_default } 17 | $Arguments = @{ InputFile = $InputFile; n = $n; Interactive = $true }; 18 | } 19 | 20 | Invoke-ArgFuscator @Arguments 21 | -------------------------------------------------------------------------------- /Invoke-ArgFuscator.psd1: -------------------------------------------------------------------------------- 1 | @{ 2 | 3 | # Script module or binary module file associated with this manifest. 4 | RootModule = 'Invoke-ArgFuscator.psm1' 5 | 6 | # Version number of this module. 7 | ModuleVersion = '1.2.0' 8 | 9 | # ID used to uniquely identify this module 10 | GUID = '844d9edc-57ad-4fcc-9fd5-77a69d4bf569' 11 | 12 | # Author of this module 13 | Author = 'wietze' 14 | 15 | # Description of the functionality provided by this module 16 | Description = 'A PowerShell module that generate obfuscated command-lines for common system-native executables' 17 | 18 | # Minimum version of the Windows PowerShell engine required by this module 19 | PowerShellVersion = '5.0' 20 | 21 | # Modules that must be imported into the global environment prior to importing this module 22 | RequiredModules = @() 23 | 24 | # Script files (.ps1) that are run in the caller's environment prior to importing this module. 25 | ScriptsToProcess = @() 26 | 27 | # Functions to export from this module 28 | FunctionsToExport = @('Invoke-ArgFuscator') 29 | 30 | # Cmdlets to export from this module 31 | CmdletsToExport = @() 32 | 33 | # Variables to export from this module 34 | VariablesToExport = @() 35 | 36 | # Aliases to export from this module 37 | AliasesToExport = @() 38 | 39 | # Private data to pass to the module specified in RootModule/ModuleToProcess 40 | PrivateData = @{ 41 | PSData = @{ 42 | # A URL to the license for this module. 43 | LicenseUri = 'https://github.com/wietze/Invoke-ArgFuscator/blob/main/LICENSE' 44 | 45 | # A URL to the main website for this project. 46 | ProjectUri = 'https://github.com/wietze/Invoke-ArgFuscator' 47 | } 48 | } 49 | 50 | NestedModules = @() 51 | 52 | } 53 | -------------------------------------------------------------------------------- /Invoke-ArgFuscator.psm1: -------------------------------------------------------------------------------- 1 | using module "Types\Token.psm1" 2 | using module "Modifiers\CharacterInsertion.psm1" 3 | using module "Modifiers\FilePathTransformer.psm1" 4 | using module "Modifiers\OptionCharSubstitution.psm1" 5 | using module "Modifiers\QuoteInsertion.psm1" 6 | using module "Modifiers\RandomCase.psm1" 7 | using module "Modifiers\Regex.psm1" 8 | using module "Modifiers\Sed.psm1" 9 | using module "Modifiers\Shorthands.psm1" 10 | using module "Modifiers\UrlTransformer.psm1" 11 | 12 | $OutputEncoding = [ System.Text.Encoding]::UTF8 13 | function Invoke-TokeniseCommand { 14 | param( 15 | [string]$InputCommand 16 | ) 17 | 18 | if ($null -eq $InputCommand) { return $null } 19 | $SeparationChar = ' ' 20 | $QuoteChars = @('"', "'") 21 | $ValueChars = @('=', ':') 22 | $CommonOptionChars = @('/', '-') 23 | 24 | $InQuote = $null 25 | [Token[]]$Tokens = @() # Explicitly type the array as Token[] 26 | $TokenContent = @() 27 | $SeenValueChar = $false 28 | 29 | for ($i = 0; $i -lt $InputCommand.Length; $i++) { 30 | if ($TokenContent.Count -eq 0) { $SeenValueChar = $false } 31 | $Char = $InputCommand[$i].ToString() 32 | 33 | if (($null -eq $InQuote) -and ( 34 | ($Char -eq $SeparationChar) -or ( 35 | (-not $SeenValueChar) -and 36 | ((($i -eq $InputCommand.Length) -or (-not @('\\', '/') -contains $InputCommand[$i + 1])) -and 37 | $ValueChars.contains($Char)) 38 | ) 39 | )) { 40 | if ($Char -ne $SeparationChar) { 41 | $TokenContent += $Char 42 | } 43 | 44 | if ($TokenContent.Count -gt 0) { 45 | $Tokens += [Token]::new($TokenContent) 46 | } 47 | $TokenContent = @() 48 | } 49 | else { 50 | if (($null -ne $InQuote) -and ($Char -eq $InQuote)) { 51 | $InQuote = $null 52 | } 53 | elseif (($null -eq $InQuote) -and ($QuoteChars | Where-Object { $_ -eq $Char })) { 54 | $InQuote = $Char 55 | } 56 | 57 | $TokenContent += $Char 58 | } 59 | $SeenValueChar = $SeenValueChar -or ($ValueChars | Where-Object { $_ -eq $Char }) 60 | } 61 | 62 | if ($TokenContent.Count -gt 0) { 63 | $Tokens += [Token]::new($TokenContent) 64 | } 65 | 66 | # Find matching template, if available 67 | $Tokens[0].Type = "command" 68 | 69 | $Tokens | Select-Object -Skip 1 | ForEach-Object -Begin { $i = 0 } -Process { 70 | $TokenText = $_.ToString() 71 | $_TokenText = $TokenText -replace "(['`"])(.*?)\1", '$2' #Remove any surrounding quotes 72 | 73 | # If previous token ends with a ValueChar, assume this token denotes a 'value' type; 74 | # or, if no option char present, designate it as 'value', unless overwritten further down 75 | if (($ValueChars | Where-Object { $Tokens[$i].TokenContent[-1] -eq $_ }) -or -not ($CommonOptionChars | Where-Object { $_TokenText.StartsWith($_) })) { 76 | $_.Type = 'value' 77 | 78 | # Special case: WMIC 79 | if ($Tokens[0].ToString() -match 'wmic(\.exe)?'` 80 | -and -not ($Tokens[1..($i + 1)] | Where-Object { $_.GetType() -eq 'disabled' })` 81 | -and -not ($Tokens[$i].GetType() -eq 'argument' -and ($ValueChars | Where-Object { $Tokens[$i].TokenContent[-1] -eq $_ }))) { 82 | Write-Host $Tokens[$i] 83 | $_.Type = 'disabled' 84 | } 85 | } 86 | 87 | if ($_TokenText -match '^(?:\\\\[^\\]+|[a-zA-Z]:|\.[\\/])((?:\\[^\\]+)+\\)?([^<>:]*)$' -or $_TokenText -match '^[^<>:]+\.[a-zA-Z0-9]{2,4}$') { 88 | $_.Type = 'path' # Windows file path format 89 | } 90 | if ($_TokenText -match '^(HKLM|HKCC|HKCR|HKCU|HKU|HKEY_(LOCAL_MACHINE|CURRENT_CONFIG|CLASSES_ROOT|CURRENT_USER|USERS))\\?') { 91 | $_.Type = 'disabled' # Windows Registry 92 | } 93 | if ($_TokenText.StartsWith('http:') -or $_TokenText.StartsWith('https:') -or $_TokenText -match '[12]?\d?\d\.[12]?\d?\d\.[12]?\d?\d\.[12]?\d?\d') { 94 | $_.Type = 'url' #URLs (including IP addresses) 95 | } 96 | 97 | $i++ 98 | } 99 | 100 | $result = @() 101 | $Tokens | ForEach-Object { 102 | $hashtable = @{} 103 | $hashtable[$_.Type] = ($_.TokenContent -join '') 104 | $result += $hashtable 105 | } 106 | 107 | return $result 108 | } 109 | 110 | function Invoke-ArgFuscator { 111 | [CmdletBinding()] 112 | Param ( 113 | [Parameter(Mandatory = $true, ParameterSetName = "FromFile")] 114 | [ValidateScript({ if ((Test-Path $_ -PathType 'Leaf') -and ((Get-Item $_ | Select-Object -Expand Extension) -eq ".json" )) { 115 | return $true 116 | } 117 | else { 118 | throw "Make sure the file exists, and has a '.json' extension." 119 | } })] 120 | [string]$InputFile, 121 | 122 | [Parameter(Mandatory = $true, ParameterSetName = "FromCommand")] 123 | [ValidateNotNullOrEmpty()] 124 | [string]$Command, 125 | 126 | [Parameter(ParameterSetName = "FromCommand")] 127 | [ValidateScript({ 128 | $platformPath = Join-Path $PSScriptRoot "models" $_ 129 | if (Test-Path $platformPath -PathType Container) { 130 | return $true 131 | } 132 | else { 133 | throw "Platform '$_' not found. Make sure the platform directory exists in the models folder ($platformPath)." 134 | } 135 | })] 136 | [string]$Platform = "windows", 137 | [int]$n = 1, 138 | [switch]$Interactive 139 | ) 140 | <# 141 | .SYNOPSIS 142 | Obfuscates a command provided in a JSON-formatted configuration file or command string. 143 | 144 | .DESCRIPTION 145 | Obfuscates a command provided in a JSON-formatted configuration file/command string by applying specified obfuscation options to the provided command. 146 | 147 | .PARAMETER InputFile 148 | Specifies the path to the JSON-formatted config file. 149 | 150 | .PARAMETER Command 151 | Specifies the command as string. 152 | 153 | .PARAMETER Platform 154 | Specifies the platform (windows, linux, macos). Default value is windows. 155 | 156 | .PARAMETER n 157 | Specifies the number of obfuscated commands to generate. Default value is 1. 158 | 159 | .EXAMPLE 160 | PS> Invoke-Argfuscator some_config.json 5 161 | 162 | .LINK 163 | https://www.twitter.com/wietze 164 | 165 | .LINK 166 | https://www.github.com/wietze/Invoke-Argfuscator 167 | #> 168 | 169 | if ($PSCmdlet.ParameterSetName -eq "FromFile") { 170 | $JSONData = Get-Content -Encoding UTF8 -Path $InputFile | ConvertFrom-Json 171 | } 172 | else { 173 | $CommandData = Invoke-TokeniseCommand $Command 174 | $cmd = $CommandData[0]["command"] 175 | $filePath = Join-Path -Path $PSScriptRoot -ChildPath "\models\$Platform\$cmd.json" 176 | if (Test-Path $filePath) { 177 | $ModelData = Get-Content -Encoding UTF8 -Path $filePath | ConvertFrom-Json 178 | # Create a PSCustomObject that matches the expected format 179 | $JSONData = [PSCustomObject]@{ 180 | "command" = ($CommandData | ConvertTo-JSON | ConvertFrom-Json) 181 | "modifiers" = $ModelData.modifiers 182 | } 183 | } 184 | else { 185 | Write-Error ("Command '{0}' could not be found in models folder ({1} does not exist)" -f $cmd, $filePath) 186 | return $null 187 | } 188 | } 189 | $ErrorModifiers = @(); 190 | for ($i = 0; $i -lt $n; $i++) { 191 | $Tokens = [System.Collections.ArrayList]@(); 192 | $OriginalTokens = [System.Collections.ArrayList]@(); 193 | 194 | # Ensure a command is provided 195 | if (!(Get-Member -InputObject $JSONData -name "command" -Membertype Properties) -or ($JSONData.command.Length -le 0)) { 196 | if ($Interactive.IsPresent) { 197 | Write-Warning "No command was specified in the provided JSON file." 198 | while (($null -eq $CommandInput) -or ($CommandInput.Length -eq 0)) { 199 | $CommandInput = Read-Host "Enter your command here" 200 | } 201 | $JSONData.command = (Invoke-TokeniseCommand $CommandInput | ConvertTo-JSON | ConvertFrom-Json) 202 | } 203 | else { 204 | Write-Error "No command was specified in the provided JSON file." -RecommendedAction "Either define a tokenised command in your file, or use interactive mode by specifying -Interactive." -Category InvalidData 205 | return $null; 206 | } 207 | } 208 | 209 | foreach ($type_value in $JSONData.command) { 210 | $Token = [Token]::new($type_value.PSObject.Properties.Value.ToCharArray()); 211 | $Token.Type = $type_value.PSObject.Properties.Name; 212 | $Tokens.Add($Token) | Out-Null; 213 | 214 | $Token = [Token]::new($type_value.PSObject.Properties.Value.ToCharArray()); 215 | $Token.Type = $type_value.PSObject.Properties.Name; 216 | $OriginalTokens.Add($Token) | Out-Null; 217 | } 218 | 219 | 220 | foreach ($modifier_params in $JSONData.modifiers.PSObject.Properties) { 221 | $ModifierName = $modifier_params.Name -replace "^(?i)regex$", "RegularExpression"; # Regex is a reserved name, hence this rename for the Modifier class 222 | $Modifier = ($ModifierName -as [type]) 223 | 224 | if ($null -eq $Modifier) { 225 | if ($ErrorModifiers -cnotcontains $ModifierName) { 226 | Write-Error("Modifier {0} could not be found." -f $ModifierName) 227 | $ErrorModifiers += $ModifierName; 228 | } 229 | continue 230 | } 231 | 232 | # Create dictionary with arguments and values 233 | $ModifierArguments = @{InputCommandTokens = [Token[]]$Tokens; AppliesTo = [string[]]@() }; 234 | foreach ($param in $modifier_params.Value.PSObject.Properties) { 235 | if ($ModifierArguments.ContainsKey($param.Name)) { 236 | $ModifierArguments[$param.Name] = $param.Value; 237 | } 238 | else { 239 | $ModifierArguments.Add($param.Name, $param.Value) | Out-Null; 240 | } 241 | } 242 | 243 | # Create an (ordered) list with the arguments to pass 244 | $ModifierArgumentsList = [System.Collections.ArrayList]@(); 245 | foreach ($Argument in $Modifier.GetConstructors()[0].GetParameters()) { 246 | $ModifierArgumentsList.Add($ModifierArguments[$Argument.Name]) | Out-Null; 247 | } 248 | 249 | # Create Modifier object and generate output 250 | $Modifier = New-Object -TypeName $Modifier.FullName -ArgumentList $ModifierArgumentsList; 251 | $Modifier.GenerateOutput(); 252 | } 253 | 254 | # Show final result 255 | $Output = $tokens[0] 256 | if ($Tokens.Count -gt 1) { 257 | ForEach ($Index in (1..($Tokens.Count - 1))) { 258 | $Output = -join ($Output, $(if (($Tokens[$Index - 1].Type -eq "argument" -or $Tokens[$Index - 1].Type -eq "value") -and ($OriginalTokens[$Index - 1].TokenContent[-1] -match '[=:]')) { "" } else { " " }), ($Tokens[$Index].ToString())) 259 | } 260 | } 261 | 262 | Write-Output $Output.ToString(); 263 | } 264 | } 265 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Modifiers/CharacterInsertion.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class CharacterInsertion : Modifier { 5 | [float]$Probability; 6 | [string[]]$Characters; 7 | [int]$Offset; 8 | 9 | CharacterInsertion([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [string[]]$Characters, [int]$Offset) : base($InputCommandTokens, $AppliesTo, $Probability) { 10 | $this.Characters = $Characters; 11 | $this.Offset = $Offset; 12 | } 13 | 14 | [void]GenerateOutput() { 15 | foreach ($Token in $this.InputCommandTokens) { 16 | if ($this.AppliesTo.Contains($Token.Type)) { 17 | $NewTokenContent = [System.Collections.ArrayList]@(); 18 | $Token.TokenContent | Select-Object -First $this.Offset | ForEach-Object { $NewTokenContent.Add($_) } 19 | 20 | $j = $this.Offset; 21 | foreach ($Char in ($Token.TokenContent | Select-Object -Skip $this.Offset)) { 22 | $NewTokenContent.Add($Char); 23 | if(($j -eq ($Token.TokenContent.Length - 1)) -and ([Modifier]::ValueChars -contains $Char)){ 24 | continue; 25 | } 26 | $i = 0; 27 | if ([Modifier]::CoinFlip($this.Probability)) { 28 | do { 29 | $chosen = [Modifier]::ChooseRandom($this.Characters) 30 | $NewTokenContent.Add($chosen); 31 | $i++; 32 | } while ([Modifier]::CoinFlip($this.Probability * [Math]::Pow(0.9, $i))); 33 | } 34 | $j += 1 35 | } 36 | 37 | $Token.TokenContent = ($NewTokenContent -join "").ToCharArray(); 38 | } 39 | } 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /Modifiers/FilePathTransformer.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class FilePathTransformer : Modifier { 5 | [float]$Probability; 6 | [boolean]$PathTraversal; 7 | [boolean]$SubstituteSlashes; 8 | [boolean]$ExtraSlashes; 9 | 10 | FilePathTransformer([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [boolean]$PathTraversal, [boolean]$SubstituteSlashes, [boolean]$ExtraSlashes) : base($InputCommandTokens, $AppliesTo, $Probability) { 11 | $this.PathTraversal = $PathTraversal; 12 | $this.SubstituteSlashes = $SubstituteSlashes; 13 | $this.ExtraSlashes = $ExtraSlashes; 14 | } 15 | 16 | [void]GenerateOutput() { 17 | foreach ($Token in $this.InputCommandTokens) { 18 | $NewTokenContent = $Token.ToString(); 19 | 20 | if ($this.AppliesTo.Contains($Token.Type)) { 21 | # Path Traversal 22 | if ($this.PathTraversal) { 23 | $NewTokenContent = [regex]::replace($NewTokenContent, "([^\\/])([\\/])([^\\/])", { 24 | $slash = $args[0].groups[2].value; 25 | if ([Modifier]::CoinFlip($this.Probability)) { 26 | $subpath = $slash + [Modifier]::ChooseRandom([Modifier]::Keywords) + $slash + ".." + $slash; 27 | return $args[0].groups[1].value + $subpath + $args[0].groups[3].value; 28 | } 29 | return $args[0].groups[0].value; 30 | }); 31 | } 32 | 33 | # Substitute slashes 34 | if ($this.SubstituteSlashes) { 35 | $NewTokenContent = [regex]::replace($NewTokenContent, "[/\\]+", { 36 | if (($args[0].index -gt 0) -and [Modifier]::CoinFlip($this.Probability)) { 37 | if ($args[0].value.StartsWith("/")) { 38 | return "\\" * $args[0].value.length 39 | } 40 | return "/" * $args[0].value.length 41 | } 42 | return $args[0].value; 43 | }); 44 | } 45 | 46 | # Extra slashes 47 | if ($this.ExtraSlashes) { 48 | $NewTokenContent = [regex]::replace($NewTokenContent, "([^\\/])([\\/])([^\\/])", { 49 | $slash = $args[0].groups[2].value; 50 | if ([Modifier]::CoinFlip($this.Probability)) { 51 | $extra_slashes = $slash * [Modifier]::ChooseRandom(@(2, 3, 4)); 52 | return $args[0].groups[1].value + $extra_slashes + $args[0].groups[3].value; 53 | } 54 | return $args[0].groups[0].value; 55 | }); 56 | } 57 | } 58 | $Token.TokenContent = $NewTokenContent; 59 | } 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /Modifiers/OptionCharSubstitution.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class OptionCharSubstitution : Modifier { 5 | [char[]]$OutputOptionChars; 6 | 7 | OptionCharSubstitution([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [object]$OutputOptionChars) : base($InputCommandTokens, $AppliesTo, $Probability) { 8 | $this.OutputOptionChars = $OutputOptionChars; 9 | } 10 | 11 | [void]GenerateOutput() { 12 | foreach ($Token in $this.InputCommandTokens) { 13 | if ($this.AppliesTo.Contains($Token.Type) -and ($this.OutputOptionChars | ForEach-Object {$_ -eq $Token.TokenContent[0] }) -contains $true) { 14 | $Token.TokenContent[0] = [Modifier]::ChooseRandom($this.OutputOptionChars); 15 | } 16 | } 17 | } 18 | } 19 | -------------------------------------------------------------------------------- /Modifiers/QuoteInsertion.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class QuoteInsertion : Modifier { 5 | [float]$Probability; 6 | static [char]$QuoteChar = '"'; 7 | 8 | QuoteInsertion([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability) : base($InputCommandTokens, $AppliesTo, $Probability) { 9 | 10 | } 11 | 12 | [string[]]AddQuotes([string[]]$Token) { 13 | $NewTokenContent = [System.Collections.ArrayList]@(); 14 | $index = 0; 15 | # if([Modifier]::CoinFlip($this.Probability)){ 16 | # $NewTokenContent.Add([QuoteInsertion]::QuoteChar); 17 | # } 18 | foreach ($Char in $Token) { 19 | $nextChar = if ($index -lt ($Token.Length)) { $Token[$index + 1] } else { "" } 20 | 21 | $NewTokenContent.Add($Char); 22 | 23 | 24 | if ([Modifier]::CoinFlip($this.Probability) ` 25 | -and ($Char -match '^[a-zA-Z0-9\-\/]$') -and ($nextChar -match '^[a-zA-Z0-9\-\/]{0,1}$') ` 26 | ) { 27 | $NewTokenContent.Add([QuoteInsertion]::QuoteChar); 28 | } 29 | $index++; 30 | 31 | } 32 | 33 | if (((($Token | Where-Object { $_ -eq [QuoteInsertion]::QuoteChar })).length % 2) -ne ((($NewTokenContent | Where-Object { $_ -eq [QuoteInsertion]::QuoteChar })).length % 2)) { 34 | $j = -1; 35 | $NewTokenContent | ForEach-Object { $i = 0 } { if ($_ -eq [QuoteInsertion]::QuoteChar) { $j = $i } $i++ }; 36 | 37 | $NewTokenContent.RemoveAt($j); 38 | } 39 | # 40 | return $NewTokenContent; 41 | } 42 | 43 | [void]GenerateOutput() { 44 | foreach ($Token in $this.InputCommandTokens) { 45 | if ($this.AppliesTo.Contains($Token.Type)) { 46 | $parts = $Token.ToString().split(" "); 47 | 48 | $Token.TokenContent = ($parts | ForEach-Object { $this.AddQuotes($_.ToCharArray()) -join "" }) -join " " 49 | ; 50 | } 51 | } 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /Modifiers/RandomCase.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class RandomCase : Modifier { 5 | [float]$Probability; 6 | 7 | RandomCase([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability) : base($InputCommandTokens, $AppliesTo, $Probability) { 8 | } 9 | 10 | [void]GenerateOutput() { 11 | foreach ($Token in $this.InputCommandTokens) { 12 | if ($this.AppliesTo.Contains($Token.Type)) { 13 | $NewTokenContent = [System.Collections.ArrayList]@(); 14 | foreach ($Char in $Token.TokenContent) { 15 | if ([Modifier]::CoinFlip($this.Probability)) { 16 | $NewTokenContent.Add([char](($char.ToString().ToUpper(), $char.ToString().ToLower())[!($Char.ToString().ToUpper() -eq $Char.ToString())])); 17 | } 18 | else { 19 | $NewTokenContent.Add($char); 20 | } 21 | $Token.TokenContent = $NewTokenContent; 22 | } 23 | } 24 | } 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /Modifiers/Regex.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | # 'Regex' is taken, hence 'RegularExpression' 5 | class RegularExpression : Modifier { 6 | [float]$Probability; 7 | [string]$RegexMatch; 8 | [string]$RegexReplace; 9 | 10 | RegularExpression([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [string]$RegexMatch, [string]$RegexReplace, [boolean]$CaseSensitive) : base($InputCommandTokens, $AppliesTo, $Probability) { 11 | $this.RegexMatch = $RegexMatch; 12 | if (!$CaseSensitive) { 13 | $this.RegexMatch = "(?i)" + $this.RegexMatch; 14 | } 15 | $this.RegexReplace = $RegexReplace; 16 | } 17 | 18 | [void]GenerateOutput() { 19 | foreach ($Token in $this.InputCommandTokens) { 20 | $NewTokenContent = $Token.ToString(); 21 | 22 | if ($this.AppliesTo.Contains($Token.Type) -and [Modifier]::CoinFlip($this.Probability)) { 23 | $RegexReplacer = [regex]::replace($this.RegexReplace, "\`$(\d+)\[(\d+):(\d+(?:-x?(?:\d+)?)?)\]", { 24 | [int]$rIndex = $args[0].groups[1].value 25 | [int]$start = $args[0].groups[2].value 26 | [string]$end = $args[0].groups[3].value 27 | if ($NewTokenContent -match $this.RegexMatch) { 28 | $match = $Matches[$rIndex] 29 | if ($end.IndexOf('-') -ge 0) { 30 | $ids = $end.split('-') 31 | if ($ids[1] -eq '') { $ids[1] = $match.length; } 32 | [int]$end = Get-Random -Minimum ([int]($ids[0])) -Maximum ([int]($ids[1])); 33 | } 34 | return $match.substring($start, $end); 35 | } 36 | return $args[0].value; 37 | }); 38 | 39 | $RegexMatchr = $this.RegexMatch -replace "`$RANDOM", ( -join ((65..90) + (97..122) | Get-Random -Count (Get-Random -minimum 1 -Maximum 20) | ForEach-Object { [char]$_ })) 40 | 41 | $NewTokenContent = [regex]::replace($NewTokenContent, $RegexMatchr, $RegexReplacer) 42 | $Token.TokenContent = $NewTokenContent; 43 | } 44 | } 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /Modifiers/Sed.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | using module "..\Types\Sed.psm1" 4 | 5 | class Sed : Modifier { 6 | [float]$Probability; 7 | [SedStatement[]]$SedStatements; 8 | 9 | Sed([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [string]$SedStatements) : base($InputCommandTokens, $AppliesTo, $Probability) { 10 | $this.SedStatements = @(); 11 | $SedStatements.Split("`n") | Where-Object { $null -ne $_ } | Foreach-Object { 12 | $this.SedStatements += (New-Object SedStatement -ArgumentList @($_)) 13 | } 14 | } 15 | 16 | [void]GenerateOutput() { 17 | foreach ($Token in $this.InputCommandTokens) { 18 | $NewTokenContent = $Token.ToString(); 19 | if ($this.AppliesTo.Contains($Token.Type)) { 20 | $SedMatches = $this.SedStatements | Where-Object { $_.StringIndex($Token.ToString()) -ge 0 } 21 | 22 | foreach ($Match in $SedMatches) { 23 | $Instance = $match.StringIndex($NewTokenContent); 24 | while ($Instance -ge 0) { 25 | $Replacement = [Modifier]::ChooseRandom($Match.Replace); 26 | if ([Modifier]::CoinFlip($this.Probability)) { 27 | $NewTokenContent = $NewTokenContent.Substring(0, $instance) + $Replacement + $NewTokenContent.substring($instance + $match.Find.length); 28 | } 29 | $instance = $NewTokenContent.IndexOf($Match.Find, [Math]::Min($instance + $Replacement.Length, $NewTokenContent.Length)); 30 | } 31 | } 32 | $Token.TokenContent = $NewTokenContent.ToCharArray() 33 | } 34 | } 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /Modifiers/Shorthands.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class Shorthands : Modifier { 5 | [float]$Probability; 6 | [boolean]$CaseSensitive; 7 | [System.Collections.HashTable]$Substitutions; #[string, string[]] 8 | static [char]$Separator = ','; 9 | 10 | Shorthands([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [string]$ShorthandCommands, [bool]$CaseSensitive) : base($InputCommandTokens, $AppliesTo, $Probability) { 11 | $this.CaseSensitive = $CaseSensitive; 12 | $this.Substitutions = @{}; 13 | $Commands = $ShorthandCommands.split([Shorthands]::Separator) | ForEach-Object { $this.NormaliseArgument($_, $True) } 14 | 15 | $Commands | Where-Object { $null -ne $_ } | Foreach-Object { 16 | $command = $_ 17 | if ($command.length -le 1) { return; } 18 | $suffix = ($command[-1], "")[!([Modifier]::ValueChars -contains $command[-1])]; 19 | 20 | $command_other_s = [System.Collections.Generic.HashSet[string]]$Commands; 21 | $command_other_s.Remove($command); 22 | 23 | for ($i = 1; $i -lt $command.length; $i++) { 24 | $command_shortened = $command.substring(0, $i); 25 | if (!(($command_other_s | ForEach-Object { ($i -lt $_.length) -and ($_.substring(0, $i) -eq $command_shortened) }) -contains $true)) { 26 | $options = ($i..($command.length - $suffix.length)) | ForEach-Object { $command.substring(0, $_) + $suffix }; 27 | $this.Substitutions.Add($command, $options); 28 | $options | ForEach-Object { $this.Substitutions[$_] = $options } 29 | break; 30 | } 31 | } 32 | 33 | } 34 | } 35 | 36 | [string]NormaliseArgument([string]$argument, [bool]$strip_option_char) { 37 | $result = $argument; 38 | if ($strip_option_char -and (([Modifier]::CommonOptionChars | ForEach-Object { $argument.StartsWith($_) }) -contains $true)) { 39 | $result = $result.Substring(1); 40 | } 41 | 42 | if (!$this.CaseSensitive) { 43 | $result = $result.ToLower(); 44 | } 45 | 46 | return $result; 47 | } 48 | 49 | [void]GenerateOutput() { 50 | foreach ($Token in $this.InputCommandTokens) { 51 | if ($this.AppliesTo.Contains($Token.Type) -and [Modifier]::CoinFlip($this.Probability)) { 52 | $NewTokenContent = $this.NormaliseArgument($Token.ToString(), $True); 53 | if ($this.Substitutions.ContainsKey($NewTokenContent)) { 54 | $OriginalToken = $this.NormaliseArgument($Token.ToString(), $False); 55 | $Token.TokenContent = $OriginalToken.Replace($NewTokenContent, [Modifier]::ChooseRandom($this.Substitutions[$NewTokenContent])).ToCharArray(); 56 | } 57 | } 58 | } 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /Modifiers/UrlTransformer.psm1: -------------------------------------------------------------------------------- 1 | using module "..\Types\Modifier.psm1" 2 | using module "..\Types\Token.psm1" 3 | 4 | class UrlTransformer : Modifier { 5 | [float]$Probability; 6 | [boolean]$LeaveOutProtocol; 7 | [boolean]$LeaveOutDoubleSlashes; 8 | [boolean]$SubstituteSlashes; 9 | [boolean]$IpToHex; 10 | [boolean]$PathTraversal; 11 | 12 | UrlTransformer([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability, [boolean]$LeaveOutProtocol, [boolean]$LeaveOutDoubleSlashes, [boolean]$SubstituteSlashes, [boolean]$IpToHex, [boolean]$PathTraversal) : base($InputCommandTokens, $AppliesTo, $Probability) { 13 | $this.LeaveOutProtocol = $LeaveOutProtocol; 14 | $this.SubstituteSlashes = $SubstituteSlashes; 15 | $this.IpToHex = $IpToHex; 16 | $this.PathTraversal = $PathTraversal; 17 | } 18 | 19 | [void]GenerateOutput() { 20 | foreach ($Token in $this.InputCommandTokens) { 21 | $NewTokenContent = $Token.ToString(); 22 | 23 | if ($this.AppliesTo.Contains($Token.Type)) { 24 | # Leave out protocol 25 | if ($this.LeaveOutProtocol -and [Modifier]::CoinFlip($this.Probability)) { 26 | $NewTokenContent = [regex]::replace($NewTokenContent, "\w+:\/\/", "://"); 27 | } 28 | 29 | # Path Traversal 30 | if ($this.PathTraversal) { 31 | [int]$i = 0; 32 | do { 33 | $NewTokenContent = [regex]::replace($NewTokenContent, "([^/])([/])([^/])", { 34 | $slash = $args[0].groups[2].value; 35 | if ([Modifier]::CoinFlip($this.Probability)) { 36 | $subpath = $slash + [Modifier]::ChooseRandom([Modifier]::Keywords) + $slash + ".." + $slash; 37 | return $args[0].groups[1].value + $subpath + $args[0].groups[3].value; 38 | } 39 | return $args[0].groups[0].value; 40 | }); 41 | $i++; 42 | } while ([Modifier]::CoinFlip($this.Probability * [Math]::Pow(0.9, $i))); 43 | } 44 | 45 | # Change double slashes 46 | if ($this.LeaveOutDoubleSlashes -and [Modifier]::CoinFlip($this.Probability)) { 47 | $NewTokenContent = [regex]::replace($NewTokenContent, "\:\/\/", ":/"); 48 | } 49 | 50 | # Substitute slashes 51 | if ($this.SubstituteSlashes) { 52 | $NewTokenContent = [regex]::replace($NewTokenContent, "\/+", { 53 | if ([Modifier]::CoinFlip($this.Probability)) { 54 | return "\" * $args[0].value.length; 55 | } 56 | return $args[0].value; 57 | }); 58 | } 59 | 60 | # IP Transform 61 | if ($this.IpToHex -and [Modifier]::CoinFlip($this.Probability)) { 62 | $NewTokenContent = [regex]::replace($NewTokenContent, "(?:[0-9]{1,3}\.){3}[0-9]{1,3}", { 63 | $ints = $args[0].value.split('.'); 64 | [array]::reverse($ints); 65 | [int]$decimal = 0; 66 | $ints | ForEach-Object { $i = 0 } { $decimal += ([int]$_ * [Math]::Pow(256, $i++)) }; 67 | 68 | if ([Modifier]::CoinFlip(0.5)) { 69 | return $decimal; 70 | } 71 | else { 72 | return '0x{0:x}' -f $decimal; 73 | } 74 | }) 75 | } 76 | $Token.TokenContent = $NewTokenContent; 77 | } 78 | } 79 | } 80 | } 81 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ``` 2 | ░█░█▄░█░█▒█░▄▀▄░█▄▀▒██▀░▒░ ▄▀▄▒█▀▄░▄▀▒▒█▀░█▒█░▄▀▀░▄▀▀▒▄▀▄░▀█▀░▄▀▄▒█▀▄░ 3 | ░█░█▒▀█░▀▄▀░▀▄▀░█▒█░█▄▄░▀▀░█▀█░█▀▄░▀▄█░█▀░▀▄█▒▄██░▀▄▄░█▀█░▒█▒░▀▄▀░█▀▄░ 4 | ``` 5 | 6 | # Invoke-ArgFuscator 7 | 8 | Invoke-ArgFuscator is an open-source, cross-platform PowerShell module that helps generate obfuscated command-lines for common system-native executables. 9 | 10 | 👉 **Use the interactive version of ArgFuscator on [ArgFuscator.net](https://argfuscator.net/)** 🚀 11 | 12 | ## Summary 13 | 14 | Command-Line Obfuscation ([T1027.010](https://attack.mitre.org/techniques/T1027/010/)) is the masquerading of a command's true intention through the manipulation of a process' command line. Across [Windows](https://www.wietzebeukema.nl/blog/windows-command-line-obfuscation), Linux and MacOS, many applications parse passed command-line arguments in unexpected ways, leading to situations in which insertion, deletion and/or subsitution of certain characters does not change the program's execution flow. Successful command-line obfuscation is likely to frustrate defensive measures such as AV and EDR software, in some cases completely bypassing detection altogether. 15 | 16 | Although previous research has highlighted the risks of command-line obfuscation, mostly with anecdotal examples of vulnerable (system-native) applications, there is an knowledge vacuum surrounding this technique. This project aims to overcome this by providing a centralised resource that documents and demonstrates various command-line obfuscation techniques, and records the subsceptability of popular applications for each. 17 | 18 | ## Usage 19 | 20 | ### Prerequisites 21 | 22 | This module works on any operating system supporting PowerShell/pwsh; this includes Windows, macOS and Linux. 23 | 24 | * **Windows**: If you are using a Microsoft-supported version of Windows, such as Windows 10 or Windows 11, PowerShell will be pre-installed on your device. 25 | * **macOS**: If you have `brew` preinstalled, run `brew install powershell/tap/powershell` to install the latest version of PowerShell. For alternative installation options, refer to Microsoft's [documentation](https://learn.microsoft.com/en-us/powershell/scripting/install/installing-powershell-on-macos). 26 | * **Linux**: Refer to Microsoft's [documentation](https://learn.microsoft.com/en-us/powershell/scripting/install/installing-powershell-on-linux) to see how you can install PowerShell on your distribution. 27 | 28 | ### Installation & usage 29 | 30 | 1. The simplest way to install this module is via the following PowerShell command: 31 | 32 | ```pwsh 33 | Install-Module -Name Invoke-ArgFuscator 34 | ``` 35 | 36 | 2. To use the module, call the function `Invoke-ArgFuscator` from within PowerShell, for example: 37 | 38 | a. To pass a command line you want to obfuscate as a command-line argument (assuming it is supported by [ArgFuscator.net](https://github.com/wietze/Argfuscator.net)): 39 | 40 | ```bash 41 | # Windows 42 | powershell /c "Invoke-ArgFuscator -Command 'certutil /f /urlcache https://www.example.org/ homepage.txt'" 43 | 44 | # macOS and Linux 45 | pwsh -c "Invoke-ArgFuscator -Command 'certutil /f /urlcache https://www.example.org/ homepage.txt'" 46 | ``` 47 | 48 | b. To use your own model files[^1]: 49 | 50 | ```bash 51 | # Windows 52 | powershell /c "Invoke-ArgFuscator -InputFile path\to\file.json" 53 | 54 | # macOS and Linux 55 | pwsh -c "Invoke-ArgFuscator -InputFile path/to/file.json" 56 | ``` 57 | 58 | ## Local Development 59 | 60 | 1. Clone this repository to your device. 61 | 2. Call `Invoke-ArgFuscator.ps1` via PowerShell, for example: 62 | 63 | a. To run interactively pass the path of a model file[^1] via the standard input (stdin): 64 | 65 | ```bash 66 | # Windows 67 | powershell .\Invoke-ArgFuscator.ps1 68 | 69 | # macOS and Linux 70 | pwsh ./Invoke-ArgFuscator.ps1 71 | ``` 72 | 73 | b. To pass the path to the model file[^1] as a command-line argument: 74 | 75 | ```bash 76 | # Windows 77 | powershell .\Invoke-ArgFuscator.ps1 -InputFile "path\to\file.json" 78 | 79 | # macOS and Linux 80 | pwsh ./Invoke-ArgFuscator.ps1 -InputFile "path/to/file.json" 81 | ``` 82 | 83 | c. To pass a command line you want to obfuscate as a command-line argument: 84 | 85 | *Note that this requires the [models/](https://github.com/wietze/ArgFuscator.net/tree/main/models) folder to be present in the same folder as `Invoke-ArgFuscator.ps1`.* 86 | 87 | ```bash 88 | # Windows 89 | powershell .\Invoke-ArgFuscator.ps1 -Command "certutil /f /urlcache https://www.example.org/ homepage.txt" 90 | 91 | # macOS and Linux 92 | pwsh ./Invoke-ArgFuscator.ps1 -Command "certutil /f /urlcache https://www.example.org/ homepage.txt" 93 | ``` 94 | 95 | ## Integration 96 | 97 | Because Invoke-ArgFuscator is a PowerShell module, you can add this project's functionality to your own PowerShell project. 98 | 99 | To leverage Invoke-ArgFuscator, add 100 | 101 | ```pwsh 102 | Import-Module Invoke-ArgFuscator 103 | ``` 104 | 105 | to your PowerShell file, and call it as either of the following: 106 | 107 | ```pwsh 108 | Invoke-ArgFuscator -InputFile $InputFile -n $n 109 | Invoke-ArgFuscator -Command $Command -Platform $Platform -n $n 110 | ``` 111 | 112 | with 113 | 114 | * `$InputFile` a `string` containing a (relative/absolute) file path to the model file, and `$n` an `integer` greater than 0 for the number of obfuscated command-line equivalents that should be produced (optional); or, 115 | * `$Command` a `string` containing the command line you wish to obfuscate, `$Platform` a `string` with the relevant platform (e.g. `windows`, optional), and `$n` an `integer` greater than 0 for the number of obfuscated command-line equivalents that should be produced (optional). 116 | 117 | [^1]: These can be generated via [ArgFuscator.net](https://argfuscator.net/) via the 'Download' option, or downloaded from [GitHub](https://github.com/wietze/Argfuscator.net/tree/main/models). 118 | -------------------------------------------------------------------------------- /Types/Modifier.psm1: -------------------------------------------------------------------------------- 1 | using module ".\Token.psm1" 2 | class Modifier { 3 | [Token[]]$InputCommandTokens; 4 | [string[]]$AppliesTo = $(); 5 | [bool]$Probability; 6 | static [char]$SeparationChar = ' '; 7 | static [char[]]$QuoteChars = @('"', ''''); 8 | static [string[]]$ValueChars = @("=", ":"); 9 | static [string[]]$CommonOptionChars = @("/", "-"); 10 | static [string[]]$Keywords = @("debug", "system32", "compile", "winsxs", "temp", "update") 11 | 12 | Modifier([Token[]]$InputCommandTokens, [string[]]$AppliesTo, [float]$Probability) { 13 | $this.InputCommandTokens = $InputCommandTokens; 14 | $this.AppliesTo += $AppliesTo; 15 | $this.Probability = $Probability; 16 | } 17 | 18 | static [boolean]CoinFlip([float]$Probability) { 19 | return (Get-Random -Minimum 0.0 -Maximum 1.0) -gt (1 - $Probability); 20 | } 21 | 22 | static [object]ChooseRandom([object[]]$Items) { 23 | return Get-Random -InputObject $Items; 24 | } 25 | 26 | static [System.Collections.ArrayList]Tokenise([string]$InputCommand) { 27 | $InQuote = $null; 28 | $Tokens = [System.Collections.ArrayList]@(); #[Token[]] 29 | $TokenContent = [System.Collections.ArrayList]@(); #[char[]] 30 | 31 | for ($i = 0; $i -lt $InputCommand.Length; $i++) { 32 | [char]$Char = $InputCommand[$i]; 33 | if ($null -eq $InQuote -and $Char -eq [Modifier]::SeparationChar) { 34 | if ($TokenContent.Length -gt 0) { 35 | $Tokens.Add([Token]::new($TokenContent)); 36 | } 37 | $TokenContent = [System.Collections.ArrayList]@(); 38 | } 39 | else { 40 | if ($null -ne $InQuote -and $InQuote -eq $Char) { 41 | $InQuote = $null; 42 | } 43 | elseif ($null -eq $InQuote -and [Modifier]::QuoteChars.Contains($Char)) { 44 | $InQuote = $Char; 45 | } 46 | 47 | $TokenContent.Add($Char); 48 | } 49 | } 50 | if ($TokenContent.Length -gt 0) { 51 | $Tokens.Add([Token]::new($TokenContent)); 52 | } 53 | 54 | return $Tokens; 55 | } 56 | 57 | [void]GenerateOutput() { 58 | Write-Host("NOT IMPLEMENTED"); 59 | } 60 | } 61 | -------------------------------------------------------------------------------- /Types/Sed.psm1: -------------------------------------------------------------------------------- 1 | class SedStatement { 2 | $FORMAT = [regex]"^s/(?(?:[^/\\]|\\(?:\\|/))+?)/(?(?:[^/\\]|\\(?:\\|/))*?)/(?[ig])?$" 3 | [string]$Find; 4 | [string[]]$Replace; 5 | [boolean]$CaseInsensitive; 6 | 7 | SedStatement([string]$Statement) { 8 | $results = $this.FORMAT.Matches($Statement) 9 | $this.Find = [regex]::Replace($results.Groups[1].Value, "/\\(\\|/)/g", "`1"); 10 | $this.Replace = [regex]::Replace($results.Groups[2].Value, "/\\(\\|/)/g", "`1").Split("|"); 11 | $this.CaseInsensitive = ($null -eq $results.Groups[3].Value) -or $results.Groups[3].Value.IndexOf('i') -ge 0; 12 | } 13 | 14 | [int32]StringIndex([string]$Content){ 15 | if($this.CaseInsensitive){ 16 | return $Content.ToUpper().IndexOf($this.Find.ToUpper()); 17 | } 18 | return $Content.IndexOf($this.Find); 19 | } 20 | } 21 | -------------------------------------------------------------------------------- /Types/Token.psm1: -------------------------------------------------------------------------------- 1 | class Token { 2 | [string]$Type; 3 | [char[]]$TokenContent; 4 | 5 | Token([char[]]$Content) { 6 | $this.TokenContent = $Content; 7 | $this.Type = "argument"; 8 | } 9 | 10 | [string]ToString(){ 11 | return [string]($this.TokenContent -join "") 12 | } 13 | } 14 | --------------------------------------------------------------------------------