Awesome

Wallbreaker

🔨 Break Java Reverse Engineering form Memory World!

WTF?

Wallbreaker is a useful tool to live analyzing Java heap, powered by frida. Provide some commands to search object or class from the memory, and beautifully visualize the real structure of the target.

Want to know real data content? list item? map entries? Want to know about implementation of the interface? Try it! What you see is what you get!

How to start?

1. Install objection

pip3 install objection

2. Download wallbreaker

mkdir -p ~/.objection/plugins/
git clone https://github.com/hluwa/Wallbreaker ~/.objection/plugins/Wallbreaker

3. Loading as objection plugin

objection -g com.app.name explore -P ~/.objection/plugins

objection -g com.app.name explore
plugin load ~/.objection/plugins/Wallbreaker

4. Use wallbreaker command

plugin wallbreaker objectsearch java.util.HashMap
plugin wallbreaker objectdump <object-handle>

Commands

Search

<details> <summary> wallbreaker classsearch <type-pattern> </summary>

[return all matched class]

</details> <details> <summary> wallbreaker objectsearch <instance-class-name> </summary>

[return all matched object-handle and toString]

</details>

Dump

<details> <summary> wallbreaker classdump <class-name> [--fullname] </summary>

[
   pretty print class structure: fields declare, static field value, methods declare.
      set --fullname to display package name of type name.
]

</details> <details> <summary> wallbreaker objectdump <object-handle> [--fullname] [--as-class class-name] </summary>

[
   pretty print object structure: fields declare and value, methods declare.
      set --fullname to display package name of type name;
      set --as-class to cast instance type(super class, not interface).
   if instance is a collection or map, dump all entries.
]