Hey, I’m Jean, aka Wintxx / IamWin

Introduction This guide covers the pivoting process using Ligolo-NG, with a focus on assessment environments such as the CPTS (Certified Penetration Testing Specialist). The objective is to provide a clear, structured technical reference that enables the reader to understand and replicate the configuration of multiple pivot hops across segmented networks. The infrastructure used throughout this guide has the following topology: Setting Up the Ligolo-NG Proxy The first step is to start the Ligolo-NG proxy component on the attacker machine. This requires having the proxy and agent binaries available beforehand. Both can be obtained from the official repository: ...

Introduction A few days ago I was working through an AI Offensive course where I covered several interesting topics. Some of them I had already explored on my own out of curiosity, but studying a subject more than once reinforces the concepts and improves retention. In this case, I will focus on the integration of a Mythic C2 MCP server with OpenCode, my current LLM of choice. I previously used Claude — the course itself uses it — but I repeatedly ran into guardrails that block anything related to C2 infrastructure, implants, malware, and similar topics, which limits the learning experience considerably. OpenCode does not impose the same restrictions, making it the tool I rely on most for assistance with tooling syntax, language-specific questions, payload concepts, and similar offensive research tasks. ...

Introduction In the field of offensive security and Red Teaming, memory credential access remains one of the most common vectors for achieving lateral movement within a Windows environment. Historically, Mimikatz (developed by Benjamin Delpy) has been the go-to tool for extracting credentials from the LSASS (Local Security Authority Subsystem Service) process. However, in modern enterprise environments, Mimikatz signatures are heavily detected by antivirus solutions, Windows Defender, and EDRs. To understand how these activities are protected and detected, it is essential to understand how LSASS memory dumps can be performed using native operating system tools (LOLBins) or legitimate administrative utilities, avoiding the use of well-known offensive tools. ...

Introduction About 2 weeks ago I found out about the existence of an MCP (Model Context Protocol) server for BloodHound that allows us to integrate it with Claude. Below I share the publications I read on the topic: SpecterOps article: BloodHound MCP: One Year Later — What I Learned About MCPs, Models, and Context GitHub Repository: BloodHound MCP - GitHub Repository What is this? The BloodHound MCP allows you to query your Active Directory data in natural language directly from Claude Desktop. Instead of writing Cypher queries manually, you ask Claude things like “show me all Domain Admins” or “find kerberoastable users.” ...

Summary ESC8 is an AD CS vulnerability where the Certificate Enrollment Web Service is enabled over HTTP (without HTTPS). This allows intercepting a Domain Controller’s authentication and relaying it to the CA to request a certificate. With that certificate we can impersonate the DC, perform DCSync, and take full control of the domain. Requirements Valid domain user credentials (Rosie.Powell:Cicada123) The CA has Web Enrollment over HTTP enabled NTLM disabled in the domain (authentication must use Kerberos) Machine Account Quota > 0 (allows adding DNS records, default is 10) Step-by-step Walkthrough 1. Initial Setup Ensure correct DNS resolution in /etc/hosts: ...

Introduction ESC11 is a vulnerability in Active Directory Certificate Services (ADCS) that occurs when the RPC interface of the Certificate Authority (CA) — specifically the ICertPassage (MS-ICPR) interface — does not enforce signing or encryption for certificate enrollment requests. This happens because the IF_ENFORCEENCRYPTICERTREQUEST flag is disabled on the CA. Since no packet signing or encryption is required on this RPC interface, it becomes vulnerable to NTLM Relay attacks. If an attacker manages to coerce the NTLM authentication of a privileged account (such as the machine account of a Domain Controller or a Domain Admin), they can relay that authentication to the CA’s RPC port and request a valid certificate on behalf of the victim. ...

Introduction ESC8 is a vulnerability in Active Directory Certificate Services (ADCS) that occurs when the Web Enrollment service is enabled over HTTP without encryption, or over HTTPS without Channel Binding (EPA) enabled. The vulnerable endpoint is: http://<CA>/certsrv/certfnsh.asp This endpoint accepts NTLM authentication without signing or channel binding, making it susceptible to NTLM Relay attacks. In essence, an attacker can intercept the NTLM authentication of a privileged account (such as the Domain Controller’s machine account) and relay it to the ADCS service to obtain a valid certificate on behalf of that account. ...

INTRODUCTION Domain Trust relationships in Active Directory are fundamental to allowing users from one domain to access resources in other domains. However, from a Red Teaming perspective, these relationships represent an excellent vector for privilege escalation and lateral movement. In this post, we will explore how to abuse a Child-to-Parent trust relationship within the same forest to escalate privileges from a fully compromised subdomain to the root domain. KEY CONCEPTS What is a Domain Trust? It is a trust mechanism between two domains that enables cross-domain authentication. Its key properties are: ...

ANÉCDOTA Hace como un año, estaba en el séptimo ciclo de Ingeniería de Sistemas sintiéndome en un callejón sin salida. Con el título cada vez más cerca, ni siquiera tenía un currículum definido; si bien es cierto que había realizado muchos proyectos de software y gestión, honestamente, no me llenaban. Había tenido un primer roce con la Seguridad Informática y Linux en un curso de la facultad y me había enganchado, pero en ese momento lo veía más como un sueño lejano que como una carrera real. ...

ANECDOTE About a year ago, I was in my seventh semester of Systems Engineering, feeling like I was at a dead end. With graduation getting closer every day, I didn’t even have a defined resume. While it’s true I had completed many software and management projects, honestly, they didn’t fulfill me. I’d had a first encounter with Information Security and Linux in a faculty course and got hooked, but at that time, I saw it more as a distant dream than a real career path. ...