A typical ARSC decompiler (like the one inside apktool or androguard ) follows this algorithm:
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) arsc decompiler
The "modding" community relies heavily on ARSC decompilation. If a developer wants to translate an app into a language not officially supported, they must decompile the resources.arsc file, modify the string values, and recompile the APK. This process is also common for aesthetic "theming" where layout and color values are altered. Competitive Analysis and Learning A typical ARSC decompiler (like the one inside
You might ask: Doesn't apktool already decode resources.arsc? This process is also common for aesthetic "theming"
Visual editing.
AndroGuard includes a ARSCDecoder class that decompiles resources.arsc into a Python object structure. It's less user-friendly for single edits but unparalleled for static analysis.
An "ARSC decompiler" is a specialized resource table parser and reconstructor, not a code decompiler. The most robust implementation is within , which can recover near-original resource structures, albeit without comments or exact original XML formatting. Future improvements could include: