Created
April 11, 2018 17:06
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Short smali analyser to generate call hierarchy and inspect methods...
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import glob | |
from collections import defaultdict | |
classes = defaultdict(lambda: defaultdict(list)) | |
class Klass: | |
def __init__(self, name, project): | |
self.name = name | |
self.project = project | |
self.methods = {} | |
def get_or_create_method(self, method_name): | |
if method_name not in self.methods: | |
self.methods[method_name] = Method(name=method_name, klass=self) | |
return self.methods[method_name] | |
class Method: | |
def __init__(self, name, klass=None): | |
self.name = name | |
self.calls = [] | |
self.called_by = [] | |
self.klass = klass | |
def add_calls(self, method): | |
self.calls.append(method) | |
def add_called_by(self, method): | |
self.called_by.append(method) | |
def __str__(self): | |
return """Name: {} | |
Class: {} | |
Calls:{} | |
Called By:{}""".format(self.name, self.klass.name, "\n -".join([" "] + ["{}->{}".format(c.klass.name, c.name) for c in self.calls]),"\n -".join([" "] + ["{}->{}".format(c.klass.name, c.name) for c in self.called_by])) | |
class Project: | |
def __init__(self): | |
self.classes = {} | |
def get_or_create_class(self, class_name): | |
if class_name not in self.classes: | |
self.classes[class_name] = Klass(name=class_name, project=self) | |
return self.classes[class_name] | |
def find_method(self, name): | |
for klass in self.classes.values(): | |
for method in klass.methods.values(): | |
if method.name == name: | |
print(method) | |
proj = Project() | |
for cf in glob.glob("**/*.smali", recursive=True): | |
with open(cf, 'r') as class_file: | |
klass = None | |
method = None | |
for line in class_file: | |
line = line.strip() | |
if line.startswith(".class"): | |
class_name = line.split()[-1] | |
klass = proj.get_or_create_class(class_name) | |
elif line.startswith(".super"): | |
klass.super = line.split()[-1] | |
elif line.startswith(".method"): | |
method_name = line.split()[-1] | |
method = klass.get_or_create_method(method_name) | |
elif line.startswith(".end method"): | |
method_name = None | |
elif line.startswith("invoke-"): | |
called_class_name = line.split()[-1].split("->")[0] | |
called_method_name = line.split()[-1].split("->")[-1] | |
called_class = proj.get_or_create_class(called_class_name) | |
called_method = called_class.get_or_create_method(called_method_name) | |
method.add_calls(called_method) | |
called_method.add_called_by(method) | |
proj.find_method("a(Lcom/arxnet/otetvgo/models/mem/node/Vod;ZZ)V") |
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