https://github.com/theunknownsoul/java-hashcode-breaker

Utility for dictionary attack on Java Object Hashcode.
https://github.com/theunknownsoul/java-hashcode-breaker

cli crack hashcode jar java

Last synced: 3 months ago
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Utility for dictionary attack on Java Object Hashcode.

• Host: GitHub
• URL: https://github.com/theunknownsoul/java-hashcode-breaker
• Owner: TheUnknownSoul
• License: mit
• Created: 2023-11-24T10:47:10.000Z (about 2 years ago)
• Default Branch: master
• Last Pushed: 2023-12-05T14:34:11.000Z (about 2 years ago)
• Last Synced: 2025-05-30T03:37:14.862Z (7 months ago)
• Topics: cli, crack, hashcode, jar, java
• Language: Java
• Homepage:
• Size: 16.9 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# JAVA HASHCODE BREAKER

# Motivation

The most popular and powerful tools such as [Hashcat](https://github.com/hashcat)

or [John The Ripper](https://www.openwall.com/john/) used to be as default

hash cracking tools. But to some unknown reasons neither hashcat no john couldn't crack simple Java Object hashcode

function. And even a lot of instruments couldn't identify such type of hash. This is very strange because sometimes Java

developers converts users passwords with simple hashcode function and pushes in to database which make dictionary

attack reasonable. Also, if you don't want to pay to crack you hash on resources

as [Hashes.com](https://hashes.com/en/credits) you may use this tool for testing.

### Some additional information

[Hashcat: issue Java hashCode() Token Length Exception with Hex integer](https://github.com/hashcat/hashcat/issues/3559)

![simple_java_hash.png](assets%2Fsimple_java_hash.png)

![hash_unknown_hash.png](assets%2Fhash_unknown_hash.png)

![hashid_unknown_hash.png](assets%2Fhashid_unknown_hash.png)

![hashcat_unknown_hash.png](assets%2Fhashcat_unknown_hash.png)

![john_unknown_hash.png](assets%2Fjohn_unknown_hash.png)

# Usage

1. Clone the repository

2. Change path to builds 

    ```

    cd java_hashcode_breaker/builds

    ```

3. Run .jar file with options below

    ```

    java -jar .jar -h  -w 

   ```

4. You can add -v option for verbose output 

    ```

    java -jar .jar -h  -w  -v

    ```

5. Happy cracking.

### Example of work

Without verbosity

![example.png](assets%2Fexample.png)

With -v option

![example_verbose.png](assets%2Fexample_verbose.png)