def filter_intents_by_folder(rule_file,intent_filters_folder):
files = get_all_in_dir(intent_filters_folder,"*")
lines_to_remove = []
filtered_file = rule_file+".filtered"
for file in files:
with open(file,'r') as r:
lines_to_remove.extend([line[:-1] for line in r.readlines()])
with open(filtered_file,'w') as f, open(rule_file,'r') as rulef:
rule_lines = rulef.readlines()
final_lines = [rule for rule in rule_lines if len([line for line in lines_to_remove if line in rule])==0]
f.writelines(final_lines)
return filtered_file
def filter_intents_by_folder(rule_file, intent_filters_folder):
files = get_all_in_dir(intent_filters_folder, "*")
lines_to_remove = []
filtered_file = rule_file + ".filtered"
for file in files:
with open(file, 'r') as r:
lines_to_remove.extend([line[:-1] for line in r.readlines()])
with open(filtered_file, 'w') as f, open(rule_file, 'r') as rulef:
rule_lines = rulef.readlines()
final_lines = [
rule for rule in rule_lines
if len([line for line in lines_to_remove if line in rule]) == 0
]
f.writelines(final_lines)
return filtered_file
def generate_facts(app_folder,result_prefix,rules,storage=None):
files = get_all_in_dir(app_folder,"*")
send_intent_actions_stats = Counter()
recv_intent_actions_stats = Counter()
len_files = 0
is_apk = None
for file in files:
logging.info("Analyzing file %s",file)
try:
a,d, dx = AnalyzeAPK(file)
is_apk = True
# Create package to file relations
except:
is_apk = None
print "Not valid APK file: "+file
try:
if is_apk:
with open(result_prefix+"_packages.txt", 'a') as f:
f.write("package('"+a.get_package()+"','"+ntpath.basename(file)+"').\n")
# Permissions
permissions = []
permissions.extend([(str(a.get_package()), permission) for permission in a.get_permissions()])
with open(result_prefix+"_uses_aux.txt", 'a') as f:
for permission in permissions:
f.write("uses('"+permission[0]+"','"+permission[1]+"').\n")
# Intents
logging.info("Looking for Intent Sends")
sends = Set()
sends.update([(str(a.get_package()),"i_"+intent.action) for intent in get_implicit_intents(a,d,dx)])
send_intent_actions_stats.update([send[1] for send in sends])
# Shared Prefs
logging.info("Looking for Shared Prefs Sends")
sends.update([(str(a.get_package()),"sp_"+shared.package+"_"+shared.preference_file) for shared in get_shared_preferences_writes(a,d,dx)])
with open(result_prefix+"_trans_aux.txt", 'a') as f:
for send in sends:
f.write("trans('"+send[0]+"','"+escape_quotes(send[1])+"').\n")
# Receivers
logging.info("Looking for Dynamic Receivers")
receives = Set()
receives.update([(str(a.get_package()),"i_"+receiver.get_action()) for receiver in get_dynamic_receivers(a,d,dx)])
logging.info("Looking for Static Receivers")
receives.update([(str(a.get_package()),"i_"+receiver.get_action()) for receiver in get_static_receivers(a)])
recv_intent_actions_stats.update([receive[1] for receive in receives])
# Shared Prefs
logging.info("Looking for Shared Prefs Receives")
receives.update([(str(a.get_package()),"sp_"+shared.package+"_"+shared.preference_file) for shared in get_shared_preferences_reads(a,d,dx)])
with open(result_prefix+"_recv_aux.txt", 'a') as f:
for receive in receives:
f.write("recv('"+receive[0]+"','"+escape_quotes(receive[1])+"').\n")
len_files += 1
utils.remove_duplicate_lines(result_prefix+"_uses_aux.txt",result_prefix+"_uses.txt",True)
utils.remove_duplicate_lines(result_prefix+"_trans_aux.txt",result_prefix+"_trans.txt",True)
utils.remove_duplicate_lines(result_prefix+"_recv_aux.txt",result_prefix+"_recv.txt",True)
except:
print "Error during analysis: "+file
traceback.print_exc()
if rules != "":
with open(os.path.splitext(rules)[0]+"_program.pl", 'w') as f:
#write packages
with open(result_prefix+"_packages.txt", 'r') as to_read:
f.writelines(to_read.readlines())
#write uses
with open(result_prefix+"_uses.txt", 'r') as to_read:
f.writelines(to_read.readlines())
#write trans
with open(result_prefix+"_trans.txt", 'r') as to_read:
f.writelines(to_read.readlines())
if storage:
f.write("trans(A,'external_storage'):- uses(A,'android.permission.WRITE_EXTERNAL_STORAGE').\n")
#write receives
with open(result_prefix+"_recv.txt", 'r') as to_read:
f.writelines(to_read.readlines())
if storage:
f.write("recv(A,'external_storage'):- uses(A,'android.permission.WRITE_EXTERNAL_STORAGE').\n")
f.write("recv(A,'external_storage'):- uses(A,'android.permission.READ_EXTERNAL_STORAGE').\n")
with open(rules, 'r') as to_read:
f.writelines(to_read.readlines())
with open(result_prefix+"_intent_send_stats",'w') as send_stats_file:
send_stats_file.write("**** Results for send intent analysis ****\n")
send_stats_file.write("Files analized: ")
send_stats_file.write(str(len_files))
send_stats_file.write("\n")
for send_stat in send_intent_actions_stats.most_common():
freq = send_stat[1]/len_files
send_stats_file.write(send_stat[0]+", "+"{0:.2f}".format(round(freq,2))+", "+str(send_stat[1])+"\n")
with open(result_prefix+"_intent_recv_stats",'w') as recv_stats_file:
recv_stats_file.write("**** Results for send intent analysis ****\n")
recv_stats_file.write("Files analized: ")
recv_stats_file.write(str(len_files))
recv_stats_file.write("\n")
for recv_stat in recv_intent_actions_stats.most_common():
freq = recv_stat[1]/len_files
recv_stats_file.write(recv_stat[0]+", "+"{0:.2f}".format(round(freq,2))+", "+str(recv_stat[1])+"\n")
logging.info("Results saved in %s files",result_prefix)
return os.path.splitext(rules)[0]+"_program.pl"
