Bytecode Obfuscator — Console UI Design

Protect artifact

Rewrites classes through ASM, then re-verifies every frame before writing output

Input

📦

ekyc-sdk-release.aar

4.8 MB · 812 classes

Symbol renaming

Classes, methods, fields

Recompute frames

COMPUTE_FRAMES on rewrite

Verify after write

Catch bad frames at build time

String encryption

Planned — not yet enabled

Keep rules rules.kts

// Public SDK surface must survive renaming —
// integrators compile against these names.
keep "com.example.ekyc.api.**" {
    methods = Visibility.PUBLIC
    fields  = Visibility.PUBLIC
}

// Entry points resolved reflectively at runtime.
keep "com.example.ekyc.ui.*Activity"
keep "**.*Serializer"

// Native bridges — JNI looks these up by name.
keepNames "com.example.ekyc.native.**" {
    annotatedWith = "@JniEntry"
}

// Everything else is fair game.
rename "com.example.ekyc.internal.**" {
    dictionary = Dictionary.SHORT_ALPHA
}

Frame recomputation is the part that actually decides whether the artifact runs. A renamed class with a stale stack map passes the build and then fails verification on device — so the pass re-verifies every rewritten class before anything is written to disk.

In-House Bytecode Obfuscator