libscompile

compiler and obfuscator for frida scripts (v13-17). packs js into ast-obfuscated byte arrays with rc4 encryption and magic signature checks.

install

git clone https://github.com/krkshs/libscompile.git
cd libscompile
npm install

build

node realese/cli.js script.js

outputs script.obf.js and a session key.

inject (python)

if the key is stripped from the build (e.g. main branch), pass it to the frida environment before eval:

import frida

with open("script.obf.js", "r") as f:
    code = f.read()

payload = f"var libskey = 'your_key_here';\n" + code

session = frida.attach("target")
session.create_script(payload).load()

internals

• AST Obfuscation: Native code transformation (introduced in 0.1.3(2))
• javascript-obfuscator backend
• Variables, strings, and control flow dynamically encrypted
• fridahash: SHA256 of the original script
• byahash: SHA256 derived from the session key
• The obfuscation seed is cryptographically tied to the session key
• magic signature verification (LIBSMETA_OK)
• silent abort on decryption failure
• byte array compilation format

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@krkshs