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Introduction:
NetExec v1.5.0 has arrived, marking the first major update in nine months to one of the most formidable tools in a penetration tester’s arsenal. This release transforms the landscape of internal network and Active Directory security assessments by automating complex attack paths, integrating critical external tools, and exposing new, subtle vectors for privilege escalation. For defenders, understanding these capabilities is no longer optional—it’s essential for hardening environments against the very techniques attackers will now deploy with a single command.
Learning Objectives:
- Understand and execute the new automated forest privilege escalation path using the `raisechild` module.
- Leverage built-in LDAP security checks to identify relay-resistant targets before launching attacks.
- Utilize integrated tools like Certipy to pivot from network access to full AD Certificate Services compromise.
- Perform credential dumping via unconventional services like MSSQL to evade detection.
- Execute commands through RDP sessions, expanding remote code execution options.
You Should Know:
1. Automatic Forest Domination with `raisechild`
The new `raisechild` module automates a complex forest-level privilege escalation attack, dramatically lowering the barrier for an attacker to move from a compromised child domain to full forest administrator privileges. This attack exploits trust relationships between domains in an Active Directory forest, a process that previously required manual steps and deep knowledge of inter-domain trusts.
Step‑by‑step guide explaining what this does and how to use it.
Concept: In a multi-domain Active Directory forest, attackers can sometimes abuse the default `Enterprise Admins` group membership, which resides in the forest root domain, to take over the entire forest. The `raisechild` module automates the process of creating a cross-domain trust attack, manipulating Kerberos tickets (specifically, the `msDS-AllowedToActOnBehalfOfOtherIdentity` property), to gain control.
Prerequisites: You need an initial foothold with administrative privileges in a child domain.
Command Execution:
Use NetExec to run the raisechild module against a Domain Controller in the child domain nxc smb dc.child.domain.local -d CHILD -u AdminUser -p Password123 -M raisechild --parent-dc ROOT-DC.root.domain.local --parent-user ForestAdmin --parent-hash <NTLM_Hash>
Process: The module will create a computer account in the child domain, configure resource-based constrained delegation on it, and then use S4U2Self and S4U2Proxy Kerberos extensions to request a service ticket from the root domain controller. This grants the attacker a Ticket-Granting Ticket (TGT) for the forest root domain, effectively making them Enterprise Admin.
Defense: Closely monitor for abnormal computer account creation and modifications to the `msDS-AllowedToActOnBehalfOfOtherIdentity` attribute. Enforce Selective Authentication on forest trusts instead of the default Domain-wide Authentication.
2. Built-in LDAP Hardening Audits
NetExec v1.5.0 now performs built-in checks for LDAP signing and channel binding directly during host enumeration. This means an attacker can instantly see which Domain Controllers are vulnerable to NTLM relay attacks to LDAP, a critical vector for escalating privileges. Previously, this required a separate tool or module like ldap-checker, which had issues with accuracy.
Step‑by‑step guide explaining what this does and how to use it.
Concept: LDAP signing and channel binding are security measures that prevent NTLM credential relay attacks. If not enforced, an attacker can intercept an authentication and relay it to a Domain Controller to perform malicious LDAP operations, such as adding a user to a privileged group.
How to Use: The check is now automatic. Simply scanning a target with the LDAP protocol will reveal its security posture in the banner.
nxc ldap 192.168.1.10 -u '' -p ''
Sample Output:
LDAP 192.168.1.10 389 DC01 [] Windows Server 2019 Build 17763 (name:DC01) (domain:LAB.LOCAL) (Signing:NOT_ENFORCED) (Channel Binding:NOT_SUPPORTED) (ssl)
Interpretation: A result showing `Signing:NOT_ENFORCED` and `Channel Binding:NOT_SUPPORTED` indicates the DC is vulnerable to LDAP relay attacks. The attacker can then proceed with tools like ntlmrelayx.py.
Defense: Enforce LDAP signing and channel binding via Group Policy. The `Signing:NOT_ENFORCED` state in NetExec’s output should be treated as a critical finding requiring immediate remediation.
3. Certipy Integration for AD CS Pivots
The integration of certipy find functionality allows NetExec to seamlessly interact with Active Directory Certificate Services (AD CS) during an assessment. This bridges the gap between network penetration and the complex world of PKI attacks, enabling an attacker to find and exploit misconfigured certificate templates directly from a NetExec session.
Step‑by‑step guide explaining what this does and how to use it.
Concept: AD CS is a prime target for privilege escalation. Misconfigured certificate templates can allow a low-privilege user to request a certificate for a high-privilege account (e.g., Domain Admin). Certipy is the leading tool for auditing and exploiting these weaknesses.
Prerequisites: Valid domain credentials.
Command Execution:
Use NetExec to run a Certipy-based audit for vulnerable certificate templates nxc ldap dc.lab.local -d LAB -u standard_user -p 'Passw0rd!' -M certipy-find
Process: The module queries the AD CS configuration, enumerates all certificate templates, and highlights those vulnerable to attacks like `ESC1` (allows for domain authentication) or `ESC8` (allows for NTLM relay to the web enrollment service). An attacker can then use the standalone Certipy tool to request a forged certificate and obtain a Ticket-Granting-Ticket (TGT).
Post-Exploitation with Certipy:
If a vulnerable CA is found, request a certificate for a Domain Admin certipy req 'lab.local/standard_user:[email protected]' -ca 'LAB-CA' -template 'VulnerableTemplate' -upn '[email protected]' Use the certificate to authenticate and get the target's NT hash certipy auth -pfx 'administrator.pfx' -dc-ip 192.168.1.10
Defense: Regularly audit certificate templates using Microsoft’s guidance or the PSPKIAudit tool. Remove enrollment rights for normal users on sensitive templates and disable NTLM on the Certificate Authority web enrollment service.
4. Dumping LSA/SAM Secrets via MSSQL
A novel technique introduced in v1.5.0 allows attackers to dump the local SAM database and LSA secrets through a compromised Microsoft SQL Server. This is a significant evolution in credential access, as it uses a common enterprise service (MSSQL) as a proxy to achieve what was traditionally done via SMB, potentially bypassing network segmentation or host-based controls focused on standard ports.
Step‑by‑step guide explaining what this does and how to use it.
Concept: The Local Security Authority (LSA) stores secrets like cached domain passwords and service account credentials. Dumping these requires local administrator privileges. This module allows an attacker with `sysadmin` privileges on MSSQL to execute code on the underlying Windows host (via `xp_cmdshell` or other methods) and retrieve these secrets through the SQL service.
Prerequisites: `sysadmin` role on the target MSSQL server.
Command Execution:
nxc mssql sqlserver.lab.local -d LAB -u sql_admin -p 'S@Pass!' -M dump-sam
Process: The module first enables `xp_cmdshell` if necessary, then uses built-in Windows utilities or .NET assemblies to dump the registry hives containing the SAM and SECURITY databases. It exfiltrates the data back through the SQL connection for offline parsing with tools like secretsdump.py.
Defense: Adhere to the principle of least privilege for SQL `sysadmin` logins. Regularly audit accounts with this role. Enable and monitor alerts for the enabling of `xp_cmdshell` or the execution of suspicious commands via SQL Agent jobs.
5. RDP as a Command Execution Vector
NetExec now supports RDP command execution, formally adding the Remote Desktop Protocol to its portfolio of remote code execution options like SMB, WMI, and WinRM. This provides an attacker with an alternative method for lateral movement, which may be useful if standard ports are blocked or monitored, but RDP (port 3389) is allowed.
Step‑by‑step guide explaining what this does and how to use it.
Concept: Instead of just using RDP for graphical logins, NetExec leverages the protocol to execute commands in the background. This can be used for deploying payloads, running reconnaissance commands, or establishing persistence.
Prerequisites: Credentials for a user with remote desktop privileges on the target.
Command Execution:
nxc rdp 192.168.1.20 -d LAB -u VictimUser -p 'Pass123!' -x 'whoami /all'
Process: NetExec establishes an RDP connection and uses techniques to execute a command in the user’s session without spawning a visible desktop, often by abusing the `cmd.exe /c` command or similar mechanisms. The output is captured and returned to the attacker’s console.
Defense: Restrict RDP access via the “Allow log on through Remote Desktop Services” User Rights Assignment policy. Implement Network Level Authentication (NLA). Use an EDR or SIEM to detect anomalous RDP connections that are followed immediately by command-line execution, especially from non-standard sources.
What Undercode Say:
Automation is the New Weaponization: NetExec v1.5.0 isn’t just adding features; it’s automating complex, multi-stage AD attack chains. The `raisechild` module turns a theoretical forest escalation path into a one-click exploit, fundamentally changing the risk model for multi-domain enterprises.
Convergence of Tooling is a Critical Trend: The deep integration of Certipy signifies a move towards unified offensive platforms. Attackers no longer need to context-switch between tools; they can discover a vulnerability with NetExec and exploit it within the same operational flow, increasing speed and efficiency.
Analysis:
This release solidifies NetExec’s position as the central nervous system for internal network penetration tests. By baking in checks for LDAP security settings, it directly addresses the reconnaissance phase, saving attackers time and reducing noise. More importantly, by integrating forest escalation and AD CS attacks, it demonstrates a shift in offensive tooling from performing discrete actions to orchestrating complete compromise sequences. For blue teams, the message is clear: point-in-time vulnerability scans are insufficient. Continuous monitoring for abnormal activity—such as the creation of computer accounts for delegation (raisechild), unexpected LDAP queries following failed sign-ins, or SAM dumping via non-SMB protocols—is now mandatory. The barrier to executing advanced AD attacks has been permanently lowered.
Prediction:
The trends evidenced in NetExec v1.5.0 point toward a future where autonomous penetration testing agents become feasible. The next evolution will likely involve AI-assisted decision-making within such tools, where the platform not only executes modules but analyzes output to choose the next optimal attack path (e.g., “LDAP signing is enforced, but Certipy found an ESC8 vulnerability; auto-pivot to an NTLM relay attack”). Defensively, this will force a greater adoption of Zero Trust principles, moving beyond hardening individual protocols to implementing application-level allow lists, strict lateral movement controls, and pervasive credential guard technologies to render stolen hashes and tickets useless. The era of manual attack chaining is ending, and the era of automated compromise engines has arrived.
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Reported By: Alexander Neff – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
