> For the complete documentation index, see [llms.txt](https://angelica.gitbook.io/hacktricks/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://angelica.gitbook.io/hacktricks/windows-hardening/active-directory-methodology/ad-information-in-printers.md).
# AD information in printers
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There are several blogs in the Internet which **highlight the dangers of leaving printers configured with LDAP with default/weak** logon credentials.\
This is because an attacker could **trick the printer to authenticate against a rouge LDAP server** (typically a `nc -vv -l -p 444` is enough) and to capture the printer **credentials on clear-text**.
Also, several printers will contains **logs with usernames** or could even be able to **download all usernames** from the Domain Controller.
All this **sensitive information** and the common **lack of security** makes printers very interesting for attackers.
Some blogs about the topic:
*
*
### Printer Configuration
* **Location**: The LDAP server list is found at: `Network > LDAP Setting > Setting Up LDAP`.
* **Behavior**: The interface allows LDAP server modifications without re-entering credentials, aiming for user convenience but posing security risks.
* **Exploit**: The exploit involves redirecting the LDAP server address to a controlled machine and leveraging the "Test Connection" feature to capture credentials.
### Capturing Credentials
**For more detailed steps, refer to the original** [**source**](https://grimhacker.com/2018/03/09/just-a-printer/)**.**
#### Method 1: Netcat Listener
A simple netcat listener might suffice:
```bash
sudo nc -k -v -l -p 386
```
However, this method's success varies.
#### Method 2: Full LDAP Server with Slapd
A more reliable approach involves setting up a full LDAP server because the printer performs a null bind followed by a query before attempting credential binding.
1. **LDAP Server Setup**: The guide follows steps from [this source](https://www.server-world.info/en/note?os=Fedora_26\&p=openldap).
2. **Key Steps**:
* Install OpenLDAP.
* Configure admin password.
* Import basic schemas.
* Set domain name on LDAP DB.
* Configure LDAP TLS.
3. **LDAP Service Execution**: Once set up, the LDAP service can be run using:
```bash
slapd -d 2
```
### References
*
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