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<< @coffeegist | @Tw1sm >>
BOFHound is an offline BloodHound ingestor and LDAP result parser compatible with TrustedSec's ldapsearch BOF, the Python adaptation, pyldapsearch and Brute Ratel's LDAP Sentinel. ldapsearch BOF logs can also be parsed from Havoc logs.
By parsing log files generated by the aforementioned tools, BOFHound allows operators to utilize BloodHound's beloved interface while maintaining full control over the LDAP queries being run and the spped at which they are executed. This leaves room for operator discretion to account for potential honeypot accounts, expensive LDAP query thresholds and other detection mechanisms designed with the traditional, automated BloodHound collectors in mind.
Check this PR to the SA BOF repo for BOFs that collect session and local group membership data and can be parsed by BOFHound.
References
Blog Posts:
| Title | Date |
|---|---|
| BOFHound: AD CS Integration | Oct 30, 2024 |
| BOFHound: Session Integration | Jan 30, 2024 |
| Granularize Your AD Recon Game Part 2 | Jun 15, 2022 |
| Granularize Your AD Recon Game | May 10, 2022 |
Presentations:
| Conference | Materials | Date |
|---|---|---|
| SO-CON 2024 | Slides & Recording | Mar 11, 2024 |
Installation
BOFHound can be installed with pip3 install bofhound or by cloning this repository and running pip3 install .
Usage
Usage: bofhound [OPTIONS]
Generate BloodHound compatible JSON from logs written by ldapsearch BOF, pyldapsearch and Brute Ratel's
LDAP Sentinel
╭─ Options ────────────────────────────────────────────────────────────────────────────────────────────────╮
│ --input -i TEXT Directory or file containing logs of ldapsearch │
│ results │
│ [default: /opt/cobaltstrike/logs] │
│ --output -o TEXT Location to export bloodhound files [default: .] │
│ --properties-level -p [Standard|Member|All] Change the verbosity of properties exported to │
│ JSON: Standard - Common BH properties | Member - │
│ Includes MemberOf and Member | All - Includes all │
│ properties │
│ [default: Member] │
│ --parser [ldapsearch|BRC4|Havoc] Parser to use for log files. ldapsearch parser │
│ (default) supports ldapsearch BOF logs from Cobalt │
│ Strike and pyldapsearch logs │
│ [default: ldapsearch] │
│ --debug Enable debug output │
│ --zip -z Compress the JSON output files into a zip archive │
│ --help Show this message and exit. │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────╯
Example Usage
Parse ldapseach BOF results from Cobalt Strike logs (/opt/cobaltstrike/logs by default) to /data/
bofhound -o /data/
Parse pyldapsearch logs and only include all properties (vs other property levels)
bofhound -i ~/.pyldapsearch/logs/ --properties-level all
Parse LDAP Sentinel data from BRc4 logs (will change default input path to /opt/bruteratel/logs)
bofhound --parser brc4
Parse Havoc loot logs (will change default input path to /opt/havoc/data/loot) and zip the resulting JSON files
bofhound --parser havoc --zip
ldapsearch
Specify *,ntsecuritydescriptor as the attributes to return to be able to parse ACL edges. You are missing a ton of data if you don't include this in your ldapsearch queries!
Required Data
The following attributes are required for proper functionality:
samaccounttype
distinguishedname
objectsid
Some object classes rely on domain objects being populated within BOFHound. Domains can be queried with either of the following commands
ldapsearch (objectclass=domain) *,ntsecuritydescriptor
ldapsearch (distinguishedname=DC=windomain,DC=local) *,ntsecuritydescriptor
Example ldapsearch Queries
# Get All the Data (Maybe Run BloodHound Instead?)
ldapsearch (objectclass=*) *,ntsecuritydescriptor
# Retrieve All Schema Info
ldapsearch (schemaIDGUID=*) name,schemaidguid 0 3 "" CN=Schema,CN=Configuration,DC=windomain,DC=local
# Retrieve Only the ms-Mcs-AdmPwd schemaIDGUID
ldapsearch (name=ms-mcs-admpwd) name,schemaidguid 1 3 "" CN=Schema,CN=Configuration,DC=windomain,DC=local
# Retrieve Domain NetBIOS Names (useful if collecting data via `netsession2/netloggedon2` BOFs)
ldapsearch (netbiosname=*) * 0 3 "" "CN=Partitions,CN=Configuration,DC=windomain,DC=local"
# Unroll a group's nested members
ldapsearch (memberOf:1.2.840.113556.1.4.1941:=CN=TargetGroup,CN=Users,DC=windomain,DC=local) *,ntsecuritydescriptor
# Query domain trusts
ldapsearch (objectclass=trusteddomain) *,ntsecuritydescriptor
# Query across a trust
ldapsearch (objectclass=domain) *,ntsecuritydescriptor 0 3 dc1.trusted.windomain.local "DC=TRUSTED,DC=WINDOMAIN,DC=LOCAL"
#####
# Queries below populate objects for AD CS parsing
# Query the domain object
ldapsearch (objectclass=domain) *,ntsecuritydescriptor
# Query Enterprise CAs
ldapsearch (objectclass=pKIEnrollmentService) *,ntsecuritydescriptor 0 3 “” “CN=Configuration,DC=domain,DC=local”
# Query AIACAs, Root CAs and NTAuth Stores
ldapsearch (objectclass=certificationAuthority) *,ntsecuritydescriptor 0 3 “” “CN=Configuration,DC=domain,DC=local”
# Query Certificate Templates
ldapsearch (objectclass=pKICertificateTemplate) *,ntsecuritydescriptor 0 3 “” “CN=Configuration,DC=domain,DC=local”
# Query Issuance Policies
ldapsearch (objectclass=msPKI-Enterprise-Oid) *,ntsecuritydescriptor 0 3 “” “CN=Configuration,DC=domain,DC=local”
Versions
Check the tagged releases to download a specific version
- v0.4.0 and onward support parsing AD CS objects and edges
- v0.3.0 and onward support session/local group data
- v0.2.1 and onward are compatible with BloodHound CE
- v0.2.0 is the last release supporting BloodHound Legacy
Development
bofhound uses Poetry to manage dependencies. Install from source and setup for development with:
git clone https://github.com/fortalice/bofhound
cd bofhound
poetry install
poetry run bofhound --help
References and Credits
- @_dirkjan (and other contributors) for BloodHound.py
- TrustedSec for CS-Situational-Awareness-BOF
- P-aLu for collaboration on bofhoud's AD CS support