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
|
import binascii
from chrysacase import ChrysalideTestCase
from gi._constants import TYPE_INVALID
from pychrysalide.analysis.scan import ScanExpression
from pychrysalide.analysis.scan import ScanOptions
from pychrysalide.analysis.scan import find_token_modifiers_for_name
from pychrysalide.glibext import ComparableItem
class TestRostPythonAPI(ChrysalideTestCase):
"""TestCase for the ROST Python API."""
def testEmptyOptions(self):
"""Check default scan options."""
ops = ScanOptions()
self.assertEqual(ops.backend_for_data, TYPE_INVALID)
def testDirectInstancesOfExpression(self):
"""Reject direct instances of ROST expressions."""
with self.assertRaisesRegex(RuntimeError, 'pychrysalide.analysis.scan.ScanExpression is an abstract class'):
e = ScanExpression()
def testBooleanComparison(self):
"""Compare custom scan expressions."""
class StrLenExpr(ScanExpression):
def __init__(self, value):
super().__init__(ScanExpression.ScanReductionState.REDUCED)
self._value = value
def _cmp_rich(self, other, op):
if op == ComparableItem.RichCmpOperation.EQ:
return len(self._value) == len(other._value)
e0 = StrLenExpr('00000000000')
e1 = StrLenExpr('00000000000')
e2 = StrLenExpr('000000000000000000000000000')
self.assertTrue(e0 == e1)
# !?
# Python teste e0 != e1 (non implémenté), puis e1 != e0 (pareil) et en déduit une différence !
# self.assertFalse(e0 != e1)
self.assertFalse(e0 == e2)
# TypeError: '<' not supported between instances of 'StrLenExpr' and 'StrLenExpr'
with self.assertRaisesRegex(TypeError, '\'<\' not supported between instances'):
self.assertTrue(e0 < e1)
def testBytePatternModifiers(self):
"""Validate the bytes produced by modifiers."""
mod = find_token_modifiers_for_name('plain')
self.assertIsNotNone(mod)
source = b'ABC'
transformed = mod.transform(source)
self.assertEqual(source, transformed[0])
mod = find_token_modifiers_for_name('hex')
self.assertIsNotNone(mod)
source = b'ABC'
transformed = mod.transform(source)
self.assertEqual(binascii.hexlify(source), transformed[0])
mod = find_token_modifiers_for_name('rev')
self.assertIsNotNone(mod)
source = b'ABC'
transformed = mod.transform(source)
self.assertEqual(source[::-1], transformed[0])
mod = find_token_modifiers_for_name('lower')
self.assertIsNotNone(mod)
source = b'AbC'
transformed = mod.transform(source)
self.assertEqual(source.lower(), transformed[0])
mod = find_token_modifiers_for_name('upper')
self.assertIsNotNone(mod)
source = b'AbC'
transformed = mod.transform(source)
self.assertEqual(source.upper(), transformed[0])
mod = find_token_modifiers_for_name('wide')
self.assertIsNotNone(mod)
source = b'ABC'
transformed = mod.transform(source)
self.assertEqual(source.decode('ascii'), transformed[0].decode('utf-16-le'))
mod = find_token_modifiers_for_name('base64')
self.assertIsNotNone(mod)
source = b'ABC'
transformed = mod.transform(source)
self.assertEqual(len(transformed), 3)
self.assertEqual(transformed[0], b'QUJD')
self.assertEqual(transformed[1], b'FCQw')
self.assertEqual(transformed[2], b'BQkM')
mod = find_token_modifiers_for_name('ror13')
self.assertIsNotNone(mod)
source = b'GetProcAddress'
transformed = mod.transform(source)
self.assertEqual(transformed[0], b'\xaa\xfc\x0d\x7c')
def testBytePatternModifiersAPI(self):
"""Validate the API for pattern modifiers."""
mod = find_token_modifiers_for_name('plain')
self.assertIsNotNone(mod)
source = [ b'ABC', b'01234' ]
transformed = mod.transform(source)
self.assertEqual(len(source), len(transformed))
self.assertEqual(source[0], transformed[0])
self.assertEqual(source[1], transformed[1])
mod = find_token_modifiers_for_name('xor')
self.assertIsNotNone(mod)
source = [ b'ABC' ]
transformed = mod.transform(source, 0x20)
self.assertEqual(transformed[0], b'abc')
|
