A simple and small Java bytecode obfuscator written in Kotlin.
- StringPooler
- StringEncryptor
- StringSplitter (very stupid, shouldn't use except for testing)
- NumberPooler
- FieldRenamer
- MethodRenamer
- ClassRenamer
- MemberShuffler
- FullAccessFlags
- DebugInfoRemover
- NOPRemover
- LineNumberRemover
- GotoInliner
- GotoReturnInliner
To run nebulous, you must first create a json config file with the template below. You can omit any transformers and they will be automatically set to false.
Example config.json:
{
"input": "input.jar",
"output": "output.jar",
"libraries": [
"/path/to/external/dependency/"
],
"exclusions": [
"some/package/path/",
"some/actual/Class"
],
"StringPooler": true,
"StringEncryptor": true,
"NumberPooler": true,
"FieldRenamer": true,
"MethodRenamer": true,
"ClassRenamer": true,
"ClassRenamerPrefix": "dev/tigr/ares/",
"MemberShuffler": true,
"FullAccessFlags": true,
"DebugInfoRemover": true,
"NOPRemover": true,
"LineNumberRemover": true,
"GotoInliner": true,
"GotoReturnInliner": true
}
Then to run it:
java -jar nebulous.jar config.json
Credit to jasmo and radon for being helpful to learn obfuscation techniques
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