forked from InQuest/iocextract
-
Notifications
You must be signed in to change notification settings - Fork 0
/
tests.py
877 lines (744 loc) · 41.2 KB
/
tests.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
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
import sys
import base64
import unittest
import binascii
import iocextract
import regex as re
print(sys.version_info)
if sys.version_info >= (3,10):
import collections
collections.Callable = collections.abc.Callable
# Helper functions
def _wrap_spaces(content):
return ' {c} '.format(c=content)
def _wrap_tabs(content):
return '\t\t{c}\t\t'.format(c=content)
def _wrap_newlines(content):
return '\r\n{c}\r\n'.format(c=content)
def _wrap_words(content):
return 'words{c}words'.format(c=content)
def _wrap_nonwords(content):
return '.!@..{c}!@#-'.format(c=content)
# Begin test cases
class TestExtractors(unittest.TestCase):
def test_corpus_results(self):
input_data = open('test_data/input.txt', 'r').read()
valid_results = open('test_data/valid.txt', 'r').read().splitlines()
invalid_results = open('test_data/invalid.txt', 'r').read().splitlines()
out_data = list(iocextract.extract_iocs(input_data))
for expected in valid_results:
self.assertIn(expected, out_data)
for unexpected in invalid_results:
self.assertNotIn(unexpected, out_data)
def test_md5_extract(self):
content = '68b329da9893e34099c7d8ad5cb9c940'
self.assertEqual(list(iocextract.extract_md5_hashes(content))[0], content)
self.assertEqual(list(iocextract.extract_md5_hashes(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_md5_hashes(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_md5_hashes(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_md5_hashes(_wrap_words(content)))[0], content)
self.assertEqual(list(iocextract.extract_md5_hashes(_wrap_nonwords(content)))[0], content)
def test_sha1_extract(self):
content = 'adc83b19e793491b1c6ea0fd8b46cd9f32e592fc'
self.assertEqual(list(iocextract.extract_sha1_hashes(content))[0], content)
self.assertEqual(list(iocextract.extract_sha1_hashes(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha1_hashes(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha1_hashes(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha1_hashes(_wrap_words(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha1_hashes(_wrap_nonwords(content)))[0], content)
def test_sha256_extract(self):
content = '01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b'
self.assertEqual(list(iocextract.extract_sha256_hashes(content))[0], content)
self.assertEqual(list(iocextract.extract_sha256_hashes(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha256_hashes(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha256_hashes(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha256_hashes(_wrap_words(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha256_hashes(_wrap_nonwords(content)))[0], content)
def test_sha512_extract(self):
content = 'be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09'
self.assertEqual(list(iocextract.extract_sha512_hashes(content))[0], content)
self.assertEqual(list(iocextract.extract_sha512_hashes(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha512_hashes(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha512_hashes(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha512_hashes(_wrap_words(content)))[0], content)
self.assertEqual(list(iocextract.extract_sha512_hashes(_wrap_nonwords(content)))[0], content)
def test_md5_not_in_shax(self):
content = 'adc83b19e793491b1c6ea0fd8b46cd9f32e592fc'
self.assertEqual(len(list(iocextract.extract_md5_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_nonwords(content)))), 0)
content = '01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b'
self.assertEqual(len(list(iocextract.extract_md5_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_nonwords(content)))), 0)
content = 'be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09'
self.assertEqual(len(list(iocextract.extract_md5_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_md5_hashes(_wrap_nonwords(content)))), 0)
def test_sha1_not_in_shaxxx(self):
content = '01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b'
self.assertEqual(len(list(iocextract.extract_sha1_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_nonwords(content)))), 0)
content = 'be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09'
self.assertEqual(len(list(iocextract.extract_sha1_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha1_hashes(_wrap_nonwords(content)))), 0)
def test_sha256_not_in_sha512(self):
content = 'be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09'
self.assertEqual(len(list(iocextract.extract_sha256_hashes(content))), 0)
self.assertEqual(len(list(iocextract.extract_sha256_hashes(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha256_hashes(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha256_hashes(_wrap_newlines(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha256_hashes(_wrap_words(content)))), 0)
self.assertEqual(len(list(iocextract.extract_sha256_hashes(_wrap_nonwords(content)))), 0)
def test_hash_extract(self):
content = """
68b329da9893e34099c7d8ad5cb9c940
adc83b19e793491b1c6ea0fd8b46cd9f32e592fc
01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09
"""
processed = list(iocextract.extract_hashes(content))
self.assertEqual(len(processed), 4)
self.assertEqual(processed[0], '68b329da9893e34099c7d8ad5cb9c940')
def test_email_extract(self):
content_list = [
'myuser @example[.]com',
'myuser@ example[.]com',
'myuser @ example[.]com',
'myuser @ example [ . ] com',
'myuser @ example.com',
'myuser@example [.] com',
'myuser@example[.]com[.]tld',
'myuser@example(.)com[.tld',
'myuser@example[.]com.tld',
'myuser@example [.] com.tld',
'myuser@example [.] com [.] tld',
'myuser@example [.] com [.tld',
'myuser@example [ . ] com',
'myuser@example [ . ] com [ .tld',
'myuser@example [[[[ [ [ [ . )]) com',
'myuser@example [[[[ [ [ [ dot )]) com',
'myuser at example [[[[ [ [ [ dot )]) com',
'myuser at example [ dot ] com',
'myuser at example[ dot ]com',
'myuser at example[dot]com',
'myuser at example [dot] com',
'myuser [at] example dot com',
'myuser at example dot com',
'myuser AT example DOT com',
'myuser[@]example.com',
'myuser[@]example[.com',
'myuser [ at ] example.com',
'myuser [at] example.com',
'myuser[at]example.com',
'myuser[ at ]example.com',
'myuser/AT/example/DOT/com',
]
for content in content_list:
try:
self.assertEqual(list(iocextract.extract_emails(content))[0], content)
self.assertEqual(list(iocextract.extract_emails(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_emails(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_emails(_wrap_newlines(content)))[0], content)
except IndexError:
pass
invalid_list = [
'@a.co',
'myuser@',
'@',
# Don't extract non-fqdn emails
'a@a',
'myuser @ word more words',
'myuser @ word more words.period',
'myuser @ words. Sentence',
'myuser@example . com',
'myuser@example .]com',
'myuseratexampledotcom',
'myuseratexample dot com',
'myuser at exampledotcom',
]
for content in invalid_list:
self.assertEqual(len(list(iocextract.extract_emails(content))), 0)
self.assertEqual(len(list(iocextract.extract_emails(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_emails(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_emails(_wrap_newlines(content)))), 0)
expected = 'myuser@example [.] com'
partial_list = [
'myuser@example [.] com. tld',
'myuser@example [.] com . tld',
'myuser@example [.] com!!!???',
]
for content in partial_list:
self.assertEqual(list(iocextract.extract_emails(content))[0], expected)
self.assertEqual(list(iocextract.extract_emails(_wrap_spaces(content)))[0], expected)
self.assertEqual(list(iocextract.extract_emails(_wrap_tabs(content)))[0], expected)
self.assertEqual(list(iocextract.extract_emails(_wrap_newlines(content)))[0], expected)
def test_email_included_in_iocs(self):
content = '[email protected]'
self.assertEqual(list(iocextract.extract_iocs(content))[0], content)
def test_ipv4_extract(self):
content_list = [
'127.0.0.1',
'192.168.255.255',
'1.1.1.1',
'1[.]1[.]1[.]1',
'1(.)1(.)1(.)1',
'111[.]111[.]111[.]111',
'111[.]111.111[.]111',
'111[.111.]111[.111',
'0.0.0.0',
'100.100.100.100',
'200.200.200.200',
'200.201.210.209',
'105.105.105.105',
'250.250.250.250',
'26.26.26.26',
'255.255.255.255',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_ipv4s(content))[0], content)
self.assertEqual(list(iocextract.extract_ipv4s(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv4s(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv4s(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv4s(_wrap_words(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv4s(_wrap_nonwords(content)))[0], content)
invalid_list = [
'192.168.1',
'192.168.a.1',
'11111.1111.1111.1111',
]
for content in invalid_list:
self.assertEqual(len(list(iocextract.extract_ipv4s(content))), 0)
self.assertEqual(len(list(iocextract.extract_ipv4s(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_ipv4s(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_ipv4s(_wrap_newlines(content)))), 0)
def test_ipv4_included_in_ips(self):
content = '127.0.0.1'
self.assertEqual(list(iocextract.extract_ips(content))[0], content)
def test_ipv4_included_in_iocs(self):
content = '127.0.0.1'
self.assertEqual(list(iocextract.extract_iocs(content))[0], content)
def test_url_extract(self):
domain_list = [
'example.com',
'a.a',
'192.168.1.1',
'a[.]a',
'example[.]com',
'example[.com',
'example',
'192[.]168.1.1',
'192[.168.1.1',
'asda.asdasdas.acasc.example.com',
'12.123.asdas.com',
'example .com',
]
prepend_list = [
"http://",
"hxxp://",
"https://",
"hxxps://",
"tcp://",
"ftp://",
"http__",
"https__",
"https:__",
"http:\\\\",
"ftx://",
"udp://",
"sftp://",
"ftps://",
"http:// ",
"HXXP://",
]
append_list = [
'/test.com?asd=qwe%20_#zxc',
'/test.com?asd=qwe#zxc',
'/test.com',
'/test',
'/',
'//',
'',
' /test/path',
]
content_list = []
for domain in domain_list:
for prepend in prepend_list:
for append in append_list:
content_list.append(prepend + domain + append)
content_list += [
'example[.]com',
'example [.] com',
'a [.] b [.] example [.] com',
'a[.]b[.]example[.]com',
'a[.]b [.] example[.]com',
'a[.]b[.] example[.]com',
'example[.]com/path!#&%?+='
'example(.)com/test',
'example (.) com/test',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_urls(content))[0], content)
def test_url_included_in_iocs(self):
content = 'http://domain.com/test'
self.assertEqual(list(iocextract.extract_iocs(content))[0], content)
def test_ipv6_extract(self):
content_list = [
'2001:0db8:85a3:0000:0000:8a2e:0370:7334',
'2001:db8:85a3:0:0:8a2e:370:7334',
'2001:db8:85a3::8a2e:370:7334',
'2001:db8::1',
'2001:0db8::0001',
'2001:db8:0:0:0:0:2:1',
'2001:db8::2:1',
'2001:db8:0000:1:1:1:1:1',
'2001:db8:0:1:1:1:1:1',
'2001:db8::1:0:0:1',
'2001:db8:1234:0000:0000:0000:0000:0000',
'2001:db8:1234:ffff:ffff:ffff:ffff:ffff',
'fe80::1ff:fe23:4567:890a',
]
for content in content_list:
try:
self.assertEqual(list(iocextract.extract_ipv6s(content))[0], content)
self.assertEqual(list(iocextract.extract_ipv6s(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv6s(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv6s(_wrap_newlines(content)))[0], content)
self.assertEqual(list(iocextract.extract_ipv6s(_wrap_nonwords(content)))[0], content)
except IndexError:
pass
invalid_list = [
'192.168.1',
# Not caught
'::1',
'::',
]
for content in invalid_list:
self.assertEqual(len(list(iocextract.extract_ipv6s(content))), 0)
self.assertEqual(len(list(iocextract.extract_ipv6s(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_ipv6s(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_ipv6s(_wrap_newlines(content)))), 0)
def test_ipv6_included_in_ips(self):
content = '2001:0db8:85a3:0000:0000:8a2e:0370:7334'
self.assertEqual(list(iocextract.extract_ips(content))[0], content)
def test_ipv6_included_in_iocs(self):
content = '2001:0db8:85a3:0000:0000:8a2e:0370:7334'
self.assertEqual(list(iocextract.extract_iocs(content))[0], content)
def test_yara_extract(self):
content_list = [
'rule testRule { condition: true }',
'rule testRule {\r\n condition: true\r\n}',
'rule testRule {\r\n\r\n condition: true\r\n\r\n\r\n}',
"""rule silent_banker : banker
{
meta:
description = "This is just an example"
thread_level = 3
in_the_wild = true
strings:
$a = {6A 40 68 00 30 00 00 6A 14 8D 91}
$b = {8D 4D B0 2B C1 83 C0 27 99 6A 4E 59 F7 F9}
$c = "UVODFRYSIHLNWPEJXQZAKCBGMT"
condition:
$a or $b or $c
}""",
"""private global rule silent_banker : banker
{
strings:
$a = {6A 40 68 00 30 00 00 6A 14 8D 91}
condition:
$a
}""",
'private rule testRule { condition: true }',
'global rule testRule { condition: true }',
'include "test.yar"\r\n\r\nrule testRule { condition: true }',
'include "test.yar"\r\ninclude "test2.yar"\r\n\r\nrule testRule { condition: true }',
'import "pe"\r\nimport "cuckoo"\r\n\r\nrule testRule { condition: true }',
'import "pe"\r\ninclude "test.yar"\r\nimport "cuckoo"\r\n\r\nrule testRule { condition: true }',
'include "test.yar"\r\nimport "cuckoo"\r\ninclude "test2.yar"\r\n\r\nrule testRule { condition: true }',
'include "test.yar"\r\n\r\nprivate rule testRule : Tags { condition: true }',
"""import "androguard"
include "../../../mytest.yar"
// test
/* test
*/
include "tesssssst.yara"
import "pe"
import "cuckoo"
private global rule silent_banker : banker
{
strings:
$a = {6A 40 68 00 30 00 00 6A 14 8D 91}
condition:
$a
}""",
'rule testRule { condition: "}" in string }',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_yara_rules(content))[0], content)
self.assertEqual(list(iocextract.extract_yara_rules(_wrap_spaces(content)))[0], content)
self.assertEqual(list(iocextract.extract_yara_rules(_wrap_tabs(content)))[0], content)
self.assertEqual(list(iocextract.extract_yara_rules(_wrap_newlines(content)))[0], content)
# Seperate combined rules
content_block = '\r\n'.join(content_list)
parsed_rules = list(iocextract.extract_yara_rules(content_block))
self.assertEqual(len(parsed_rules), 15)
for content in content_list:
self.assertIn(content, parsed_rules)
# Invalid rules
invalid_list = [
'rule testRule { conditio: true }',
'rule testRule { condition true }',
'rule testRule { condition: true ',
'ule testRule { condition: true }',
'rule testRule condition: true }',
'Rule testRule { conditioN: true }',
'// the rule keyword\r\ntestRule { condition: true }',
'/* rule */ testRule { condition: true }',
'a sentence with the word rule in it. Then { a condition: like this? }',
]
for content in invalid_list:
self.assertEqual(len(list(iocextract.extract_yara_rules(content))), 0)
self.assertEqual(len(list(iocextract.extract_yara_rules(_wrap_spaces(content)))), 0)
self.assertEqual(len(list(iocextract.extract_yara_rules(_wrap_tabs(content)))), 0)
self.assertEqual(len(list(iocextract.extract_yara_rules(_wrap_newlines(content)))), 0)
def test_yara_included_in_iocs(self):
content = 'rule testRule { condition: true }'
self.assertEqual(list(iocextract.extract_iocs(content))[0], content)
def test_yara_inside_other_text_extracted_correctly(self):
content = """
This is just a paragraph of text. It might have <html> in it. It might have
keywords like rule or import or special characters like { .
import "androguard"
include "../../../mytest.yar"
// test
/* test
*/
include "tesssssst.yara"
import "pe"
import "cuckoo"
private global rule silent_banker : banker
{
strings:
$a = {6A 40 68 00 30 00 00 6A 14 8D 91}
condition:
$a
}
import "pe"
include "mytest.yar"
// test
/* test
*/
import "pe"
import "cuckoo"
private global rule silent_banker : banker
{
strings:
$a = {6A 40 68 00 30 00 00 6A 14 8D 91}
condition:
$a
}
Even if there are more weird words over here } this should just be
ignored.
rule testRule { condition: true }
And stuff after.
"""
parsed_rules = list(iocextract.extract_yara_rules(content))
self.assertEqual(len(parsed_rules), 3)
self.assertTrue(parsed_rules[0].startswith('import "androguard'))
self.assertTrue(parsed_rules[1].startswith('import "pe'))
self.assertTrue(parsed_rules[2].startswith('rule test'))
for rule in parsed_rules:
self.assertTrue(rule.endswith('}'))
def test_refang_ipv4(self):
content_list = [
'111.111.111.111',
'111[.]111[.]111[.]111',
'111(.)111(.)111(.)111',
'111[.]111[.]111[.]111',
'111[.]111.111[.]111',
'111[.111.]111[.111',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_ipv4s(content, refang=True))[0], '111.111.111.111')
self.assertEqual(iocextract.refang_ipv4(content), '111.111.111.111')
def test_refang_data(self):
content_list = [
'http://example.com/test',
'http:// example .com /test',
'http://example[.]com/test',
'http://example[.]com[/]test',
'http://example(.)com(/)test',
'http://example[dot]com/test',
'hxxp://example.com/test',
'example [.] com/test',
'example(.)com/test',
'hxxp://example[.com/test',
'hxxp://example.]com/test',
'hxxp://exampledot]com/test',
'hxxp://example[dotcom/test',
'hxxp://example.com[/test',
'http__example.com/test',
'http:__example.com/test',
'http:\\\\example.com/test',
]
for content in content_list:
self.assertEqual(iocextract.refang_data(content), 'http://example.com/test')
self.assertEqual(iocextract.refang_data('ftx://example.com/test'), 'ftp://example.com/test')
# IPv6 works as expected
content = 'http://[2001:db8:85a3:0:0:8a2e:370:7334]:80/test'
self.assertEqual(iocextract.refang_data(content), content)
self.assertEqual(list(iocextract.extract_urls(content, refang=True))[0], content)
# HXXPS
for content in ['hxxps://example[.]com/test', 'hXXps://example[dot]com/test']:
self.assertEqual(iocextract.refang_data(content), 'https://example.com/test')
def test_url_extraction_handles_punctuation(self):
self.assertEqual(list(iocextract.extract_urls('example[.]com!'))[0], 'example[.]com')
self.assertEqual(list(iocextract.extract_urls('example[.]com!!!!'))[0], 'example[.]com')
self.assertEqual(list(iocextract.extract_urls('example[.]com/!!!!'))[0], 'example[.]com/')
self.assertEqual(list(iocextract.extract_urls('example[.]com/!'))[0], 'example[.]com/')
self.assertEqual(list(iocextract.extract_urls('example[.]com/?'))[0], 'example[.]com/')
self.assertEqual(list(iocextract.extract_urls('example[.]com/!path'))[0], 'example[.]com/!path')
self.assertEqual(list(iocextract.extract_urls('example[.]com/?path'))[0], 'example[.]com/?path')
self.assertEqual(list(iocextract.extract_urls('example[.]com?'))[0], 'example[.]com')
self.assertEqual(list(iocextract.extract_urls('example[.]com.'))[0], 'example[.]com')
self.assertEqual(list(iocextract.extract_urls('example[.]com/?q=test???'))[0], 'example[.]com/?q=test')
self.assertEqual(list(iocextract.extract_urls('example[.]com/ ...'))[0], 'example[.]com/')
self.assertEqual(list(iocextract.extract_urls('example[.]com/)'))[0], 'example[.]com/')
self.assertEqual(list(iocextract.extract_urls('example[.]com/\''))[0], 'example[.]com/')
def test_url_extraction_end_punctuation(self):
"""
Any url ending with a punctuation character defined in `END_PUNCTUATION` should be extracted without the punctuation.
"""
end_punctuation = ['.', '?', '>', '"', '\'', '`', ')', '!', ',', '}', ':', ';', '\u201d', '\u2019', '\uff1e', '\uff1c', ']']
unicode_end = ['\u201d', '\u2019', '\uff1e', '\uff1c']
# extracted url should not end with the punctuation
for end in end_punctuation:
self.assertEqual(list(iocextract.extract_urls('https://example.com' + end))[0], 'https://example.com')
# extracted url should still contain the punctuation if it is mid-url
for end in end_punctuation:
# skip unicode punctuation
if end in unicode_end:
continue
self.assertEqual(list(iocextract.extract_urls('https://example.com/a' + end + 'b'))[0], 'https://example.com/a' + end + 'b')
def test_hex_url_extraction(self):
if sys.version_info[0] == 3:
hexconvert = lambda x: str(binascii.hexlify(bytes(x, 'ascii')), 'ascii')
else:
hexconvert = lambda x: binascii.hexlify(x)
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert('http://example.com/pa_th.doc?q=a#b'),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert(_wrap_spaces('http://example.com/pa_th.doc?q=a#b')),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert(_wrap_newlines('http://example.com/pa_th.doc?q=a#b')),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert(_wrap_tabs('http://example.com/pa_th.doc?q=a#b')),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert('wordshttp://example.com/pa_th.doc?q=a#b words'),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
self.assertEqual(list(iocextract.extract_encoded_urls(hexconvert('http://example.com/pa_th.doc?q=a#b').upper(),
refang=True))[0], 'http://example.com/pa_th.doc?q=a#b')
def test_urlencoded_url_extraction(self):
self.assertEqual(list(iocextract.extract_encoded_urls('rget="http%3A%2F%2Fexample%2Ecom%2Fwhite%2Ehta"/>',
refang=True))[0], 'http://example.com/white.hta')
self.assertEqual(list(iocextract.extract_encoded_urls('http%3A%2F%2Fexample%2Ecom',
refang=True))[0], 'http://example.com')
self.assertEqual(list(iocextract.extract_encoded_urls('http%3A%2F%2Fexample%2Ecom'))[0], 'http%3A%2F%2Fexample%2Ecom')
self.assertEqual(list(iocextract.extract_encoded_urls('http%3A%2F%2Fexa-mple%2Ecom',
refang=True))[0], 'http://exa-mple.com')
def test_refang_never_excepts_from_urlparse(self):
try:
iocextract.refang_data('hxxp__test]')
iocextract.refang_data('CDATA[^h00ps://test.com/]]>')
except ValueError as e:
self.fail('Unhandled parsing error in refang: {e}'.format(e=e))
def test_url_bracket_regex_tight_edge_cases(self):
self.assertEqual(list(iocextract.extract_urls('CDATA[^h00ps://test(.)com/]]>'))[1], 'h00ps://test(.)com/')
def test_url_generic_regex_tight_edge_cases(self):
self.assertEqual(len(list(iocextract.extract_urls('https://[test]/'))), 1)
self.assertEqual(len(list(iocextract.extract_urls('https:// test /'))), 1)
def test_refang_removes_some_backslash_escaped_characters(self):
self.assertEqual(iocextract.refang_data('https://example\(.)com/'), 'https://example.com/')
self.assertEqual(iocextract.refang_data('https://example\(.\)com/test\.html'), 'https://example.com/test.html')
def test_ip_regex_allows_multiple_brackets(self):
self.assertEqual(list(iocextract.extract_ips('10.10.10.]]]10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10.10.10.)))10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10.10.10[[[.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10[[[[.]]]]10[[[.]]10[.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10(((.]]]]10([[.)10.)10', refang=True))[0], '10.10.10.10')
def test_ip_regex_allows_backslash_escape(self):
self.assertEqual(list(iocextract.extract_ips('10.10.10\.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10.10.10\\\\\\\\.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10\.10\.10\.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10\\\\\\\\\.10\\.10\.10', refang=True))[0], '10.10.10.10')
self.assertEqual(list(iocextract.extract_ips('10[.]10(.10\.10', refang=True))[0], '10.10.10.10')
def test_defang(self):
self.assertEqual(iocextract.defang_data('http://example.com/some/lo.ng/path.ext/'), 'hxxp://example[.]com/some/lo.ng/path.ext/')
self.assertEqual(iocextract.defang_data('http://example.com/path.ext'), 'hxxp://example[.]com/path.ext')
self.assertEqual(iocextract.defang_data('http://127.0.0.1/path.ext'), 'hxxp://127[.]0[.]0[.]1/path.ext')
self.assertEqual(iocextract.defang_data('http://example.com/'), 'hxxp://example[.]com/')
self.assertEqual(iocextract.defang_data('https://example.com/'), 'hxxps://example[.]com/')
self.assertEqual(iocextract.defang_data('ftp://example.com/'), 'fxp://example[.]com/')
self.assertEqual(iocextract.defang_data('example.com'), 'example[.]com')
self.assertEqual(iocextract.defang_data('example.com/'), 'example[.]com/')
self.assertEqual(iocextract.defang_data('example.com/some/lo.ng/path.ext/'), 'example[.]com/some/lo.ng/path.ext/')
self.assertEqual(iocextract.defang_data('127.0.0.1'), '127[.]0[.]0[.]1')
def test_email_refang(self):
content_list = [
'myuser@example[.]com[.]tld',
'myuser @example[.]com[.]tld',
'myuser @ example.com.tld',
'myuser@example(.)com[.tld',
'myuser@example[.]com.tld',
'myuser@example [.] com.tld',
'myuser@example [.] com [.] tld',
'myuser@example [.] com [.tld',
'myuser@example [[[ . ])] com [.tld',
'myuser[@]example [[[ . ])] com [.tld',
'myuser [ @ ] example [[[ . ])] com [.tld',
'myuser { @ ) example [[[ . ])] com [.tld',
'myuser { @ ) example { . ])] com [.tld',
'myuser { at ) example { . ])] com [.tld',
'myuser { at ) example { doT ])] com [dot tld',
'myuser At example DOT com DOT tld',
'myuser[@]example[.com[.tld]',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_emails(content, refang=True))[0], '[email protected]')
self.assertEqual(iocextract.refang_email(content), '[email protected]')
def test_path_refang(self):
content_list = [
'http://example.com/test[.]htm',
'http://example[.]com/test[.]htm',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_urls(content, refang=True))[0], 'http://example.com/test.htm')
self.assertEqual(iocextract.refang_data(content), 'http://example.com/test.htm')
def test_b64_url_extraction_just_url(self):
content_list = [
base64.b64encode(b'http://example.com').decode('ascii'),
base64.b64encode(b'http://example.com/some/url').decode('ascii'),
base64.b64encode(b'http://example.com/some/url').decode('ascii'),
base64.b64encode(b'FtP://example.com/some/url').decode('ascii'),
]
for content in content_list:
self.assertEqual(list(iocextract.extract_urls(content))[0], content)
def test_b64_url_extraction_with_wrappers(self):
content_list = [
base64.b64encode(b' http://example.com/test ').decode('ascii'),
base64.b64encode(b'words in front http://example.com/test ').decode('ascii'),
base64.b64encode(b' http://example.com/test words after').decode('ascii'),
base64.b64encode(b' http://example.com/test\x99\x80 ').decode('ascii'),
base64.b64encode(b'sadasdasdasdhttp://example.com/test ').decode('ascii'),
base64.b64encode(b'adasdasdasdhttp://example.com/test ').decode('ascii'),
base64.b64encode(b'dasdasdasdhttp://example.com/test ').decode('ascii'),
base64.b64encode(b'asdasdasdhttp://example.com/test ').decode('ascii'),
base64.b64encode(b'sdasdasdhttp://example.com/test ').decode('ascii'),
base64.b64encode(b'reallylongreallylongreallylongreallylongreallylongreallylongreallylonghttp://example.com/test reallylong').decode('ascii'),
]
for content in content_list:
self.assertEqual(list(iocextract.extract_encoded_urls(content, refang=True))[0], 'http://example.com/test')
def test_b64_url_extraction_bad_pad(self):
content_list = [
# Good
'aHR0cDovL2V4YW1wbGUuY29t',
'aHR0cDovL2V4YW1wbGUuY29tIA==',
'aHR0cDovL2V4YW1wbGUuY29tICA=',
'aHR0cDovL2V4YW1wbGUuY29tICAg',
# Bad
'aHR0cDovL2V4YW1wbGUuY29t=',
'aHR0cDovL2V4YW1wbGUuY29tIA=',
'aHR0cDovL2V4YW1wbGUuY29tICA',
'aHR0cDovL2V4YW1wbGUuY29tI',
'aHR0cDovL2V4YW1wbGUuY29tba',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_encoded_urls(content, refang=True))[0], 'http://example.com')
def test_b64_url_extraction_whitespace(self):
content_list = [
'aHR0cDovL2V4 YW1wbGUuY29t',
'aHR0cD\r\n ovL2V4Y\r\n W1wbGUuY29tIA==',
'aHR0c\t\t\t\t\t\tDovL 2V4YW1wbGUuY29tI CA=',
'a H R 0 c D o v L 2 V 4 Y W 1 w b G U u Y 2 9 t I C A g ',
]
for content in content_list:
self.assertEqual(list(iocextract.extract_encoded_urls(content, refang=True))[0], 'http://example.com')
def test_extract_custom_extracts_from_list(self):
regex_list = [
r'(test\d)',
r't(..)t',
r'^(str.ng)$',
]
self.assertEqual(list(iocextract.extract_custom_iocs('test1', regex_list)), ['test1', 'es'])
self.assertEqual(list(iocextract.extract_custom_iocs('a test2 string', regex_list)), ['test2', 'es'])
self.assertEqual(list(iocextract.extract_custom_iocs('just testing', regex_list)), ['es'])
self.assertEqual(list(iocextract.extract_custom_iocs('string', regex_list)), ['string'])
self.assertEqual(list(iocextract.extract_custom_iocs('strong', regex_list)), ['strong'])
self.assertEqual(list(iocextract.extract_custom_iocs('strange', regex_list)), [])
self.assertEqual(list(iocextract.extract_custom_iocs('another one', regex_list)), [])
def test_extract_custom_iocs_empty_list_extracts_nothing(self):
self.assertEqual(list(iocextract.extract_custom_iocs('content', [])), [])
self.assertEqual(list(iocextract.extract_custom_iocs('', [])), [])
def test_extract_custom_iocs_empty_content_extracts_nothing(self):
self.assertEqual(list(iocextract.extract_custom_iocs('', [r'egex'])), [])
def test_extract_custom_iocs_no_match_extracts_nothing(self):
self.assertEqual(list(iocextract.extract_custom_iocs('words', [r'egex'])), [])
def test_extract_custom_iocs_excepts_on_bad_regex(self):
# Note: You have to use list() here because exceptions are only raised when the generator is executed
with self.assertRaises(re.error):
list(iocextract.extract_custom_iocs('', [r'(mismatched paren']))
list(iocextract.extract_custom_iocs('', [r'[mismatched bracket']))
with self.assertRaises(IndexError):
list(iocextract.extract_custom_iocs('', [r'no capture group']))
list(iocextract.extract_custom_iocs('', [r'']))
def test_unicode_space_terminates_urls(self):
self.assertEqual(list(iocextract.extract_urls('as\xa0example[.]com/Es3tC0deR3name.exe):')), ['example[.]com/Es3tC0deR3name.exe'])
self.assertEqual(list(iocextract.extract_urls('as\xa0example[.]com\xa0words):')), ['example[.]com'])
def test_bracket_url_dots_in_netloc(self):
content_list = [
'hXXps://192.168.149[.]100/api/info',
'hXXps://subdomain.example[.]com/some/path',
'h__ps__subdomain.example[.]com/some/path',
'http://subdomain.example.com/test[.]doc'
]
for content in content_list:
for extracted in iocextract.extract_urls(content):
self.assertEqual(extracted, content)
# We terminate on any character not in the allowed set of domain + scheme characters
# That means these will show up from the generic regex, but not the bracket regex.
# Note the space termination in the second result:
self.assertEqual(list(iocextract.extract_urls('hXXps:// 192.168.149[.]100/api/info')),
['hXXps:// 192.168.149[.]100/api/info', '192.168.149[.]100/api/info'])
def test_base64_error_when_whitespace_in_leading_characters(self):
content = 'ZyBodHRwOi8vIi4kd2ViLiRpbmouIm5uU3ByZWFkIFZpYSA6ICIuJHZpc2l0b3IuIm5uS2VybmVsIFZlcnNpb24gOiAiLiRhcmFuLiJublNhZmUgTW9kZSA6ICIuJHNhZmVtb2RlOyBtYWlsKCJrYW1laGFtZS5kcmFnb25AZ21haWwuY29tIiwiU2V0b3JhbiBCb3MgIi4kc2FmZW1vZGUsJGJvZHksJGZsb2F0KTs='
self.assertIn('http://".$web.$inj."nnSpread', list(iocextract.extract_urls(content, refang=True)))
def test_telephone_number_extraction(self):
content = "123-456-7890 (123) 456-7890 123.456.7890"
self.assertEqual(['456-7890', '456-7890', '456.7890'], list(iocextract.extract_telephone_nums(content)))