0WhiteDev

0WhiteDev / Detranspiler

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Recover Java source from JNI-native binaries

10
1
69% credibility
Found May 30, 2026 at 11 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
Python
AI Summary

Detranspiler is a reverse-engineering tool that recovers Java-like source code from native library binaries (DLL, SO, dylib) that contain embedded Java logic, producing reviewable source files, HTML reports, and interactive relationship maps for security research and analysis.

How It Works

1
🔍 Find a mysterious native library

You discover a DLL or SO file that contains hidden Java logic inside it, and you want to understand what it does.

2
📦 Optionally add the companion JAR

If you have the original Java archive file, you can attach it to help the tool recover more accurate method signatures and names.

3
⚙️ Let the tool do its analysis

The tool automatically examines the binary, traces Java native calls, rebuilds method structures, and decrypts hidden strings.

4
📊 Review the interactive report

You explore a colorful HTML report showing recovery statistics, detected obfuscation patterns, and the relationships between Java and native code.

5
📁 Browse recovered Java source

You navigate through the recovered Java-like files, seeing method bodies that were reconstructed from the native binary.

6
🗺️ Explore the relationship map

You use an interactive graph to see which native functions connect to which Java methods, tracing the full call chain.

✅ You understand the hidden Java logic

You've recovered readable Java-like source from a native binary and can now analyze or continue the work manually with full context.

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AI-Generated Review

What is Detranspiler?

Detranspiler is a Python-based reverse-engineering pipeline that recovers Java-like source code from native binaries. If you've ever faced a Java application where critical logic lives inside DLLs, SOs, or dylibs, this tool attempts to reconstruct the missing Java layer by tracing JNI calls, decompiling native code with Ghidra, and stitching together class files from multiple sources. You run it from the command line against a native library, optionally provide the accompanying JAR, and get back readable Java sources with HTML reports and an interactive relationship map showing how Java methods connect to native functions.

Why is it gaining traction?

The niche appeal is clear: tools that decompile Java are plentiful, but nothing else handles the case where your target ships logic in native code. Detranspiler combines three capabilities that rarely coexist -- Ghidra integration for native disassembly, CFR-based JAR decompilation, and custom JNIC/Radioegor deobfuscation passes. The interactive RE Map visualization and native method browser in the desktop GUI make it practical for exploring recovered code rather than staring at raw JSON. It handles the tedious work of decrypting obfuscated strings, reconstructing RegisterNatives tables, and merging multiple decompilation layers into coherent output.

Who should use this?

Security researchers analyzing Java applications with native components, developers recovering source from third-party libraries, and reverse engineers working with obfuscated JNIC loaders will find this most useful. The tool assumes comfort with command-line tooling and binary analysis concepts. If you need to recover source from a native-obfuscated Android library or a transpiled Java application with bytecode-to-native compilation, this addresses exactly that scenario. Casual Java developers looking for a decompiler should look elsewhere -- this is purpose-built for native-heavy targets.

Verdict

Detranspiler is a specialized tool that fills a genuine gap, but its credibility score of 0.699999988079071% and modest star count reflect its early-stage status and narrow audience. The documentation is thorough and the architecture is well-thought-out, but test coverage and community feedback are minimal. Worth evaluating for specific reverse-engineering tasks, but approach with caution for anything mission-critical.

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