Arsc Decompiler -

from androguard.core.androguard import APK a = APK("app.apk") for pkg in a.get_packages(): print(pkg.get_name()) for res in pkg.get_resources(): print(res.get_key(), res.get_value()) Security researchers writing automated scanners. 4. jadx (with resource decoding) Jadx focuses on DEX decompilation, but its resource decoder can output resources.arsc as res/values/strings.xml .

jadx app.apk --show-raw-res – Not Recommended for Sensitive APKs Websites like “APK Decompiler Online” offer ARSC extraction. Avoid these for proprietary code—they may steal resources. Part 5: Advanced ARSC Decompilation Techniques Reconstructing R.java from resources.arsc The decompiler can generate a fake R.java : arsc decompiler

apktool d app.apk This produces a res/ folder with decoded values/strings.xml and a public.xml file. from androguard

Introduction: What is an ARSC File? If you have ever peeked inside an Android APK file (by renaming it to .zip and unzipping it), you have likely encountered a file named resources.arsc . While classes.dex contains the app’s code and AndroidManifest.xml declares its structure, the resources.arsc file is the silent backbone of every Android application. jadx app

def parse_string_pool(self): chunk_type = self.read_uint32() # should be 0x0001 chunk_size = self.read_uint32() string_count = self.read_uint32() # Simplified: skip style count, flags, etc. self.pos += 20 offsets = [] for _ in range(string_count): offsets.append(self.read_uint32()) for off in offsets: # Strings are UTF-16, but we'll read until null str_pos = self.pos + off end = str_pos while self.data[end:end+2] != b'\x00\x00': end += 2 raw = self.data[str_pos:end].decode('utf-16le') self.string_pool.append(raw)

def read_uint32(self): val = struct.unpack("<I", self.data[self.pos:self.pos+4])[0] self.pos += 4 return val

def parse_package(self): # Simplified: skip to string pool self.pos += 4 + 4 + 4 + 256 # skip id, name, type strings offset self.parse_string_pool() # Now you can parse entry values using string_pool indices print("Found strings:", self.string_pool[:5]) with open("resources.arsc", "rb") as f: parser = ARSCParser(f.read()) parser.parse()