/usr/lib/python2.7/dist-packages/rekall/plugins/tools/profile_tool_test.py is in python-rekall-core 1.6.0+dfsg-2.
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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 | """Tests for profile_tool."""
import logging
import unittest
from rekall import session
from rekall import testlib
from rekall.plugins.tools import profile_tool
class BuildIndexTester(profile_tool.BuildIndex):
def __init__(self, profiles=None, **kwargs):
super(BuildIndexTester, self).__init__(**kwargs)
self.profiles = profiles
def _LoadRawProfile(self, filepath):
self.profiles[self._ProfileIdFromPath(filepath)]
def _FindNewProfiles(self, *args, **kwargs):
return self.profiles
class BuildSymbolOffsetIndexTest(testlib.RekallBaseUnitTestCase):
def setUp(self):
# This is the set of profiles we're trying to index. It covers all
# the edge cases I've seen "in the wild" so far.
self.raw_profiles = {
# P1 is a profile that will have a single symbol trait = c:3 once
# we remove duplicates.
"P1": {
"$CONSTANTS":
{
"a": 1,
"b": 2,
"c": 3
}
},
# P1-DUPLICATE is simply a duplicate profile from P1, to test that
# we detect and discard profiles that are new and duplicates with
# other new profiles.
"P1-DUPLICATE": {
"$CONSTANTS":
{
"a": 1,
"b": 2,
"c": 3,
}
},
# P1-1 is simply a newer version of P1. Simulates the usual
# minor kernel version bump where some symbols are readjusted.
# Single symbol traits = c:4
"P1-1": {
"$CONSTANTS":
{
"a": 1,
"b": 2,
"c": 4
}
},
# P1-2 simulates a slightly newer P1 profile that's virtually the
# same but has an artifact of a static function that's been
# chunked by GCC and its symbol made public.
#
# Real-world example:
# * Ubuntu precise 3.19.0-21-generic
# * Ubuntu precise 3.19.0-22-generic
#
# P1-2 should be considered a duplicate of P1.
"P1-2": {
#
# function that's been chunked by GCC and its symbol
# made public.
"$CONSTANTS":
{
"a": 1,
"b": 2,
"c": 3,
"d.part.3": 4
}
},
# P3 is a completely different profile.
# Single symbol traits = b:3, c:5, d:6
"P3": {
"$CONSTANTS":
{
"b": 3,
"c": 5,
"d": 6
}
},
# Next is an example of profiles that collectively clash with
# another profile. DOPPLE-1 and DOPPLE-2 make DOPPLE not have any
# single-symbol trait. This forces us to compute traits with a
# pair of symbols.
#
# Real-world example:
# * Ubuntu precise 3.2.0-72-generic
# * Ubuntu precise 3.2.0-73-generic
# * Ubuntu precise 3.2.0-74-generic
# Single-symbol traits = d:9
"DOPPLE-1": {
"$CONSTANTS":
{
"b": 7,
"c": 8,
"d": 9
}
},
# The clashing profile.
# Double-symbol trait = (b:7, d:10)
"DOPPLE": {
"$CONSTANTS":
{
"b": 7,
"c": 8,
"d": 10
}
},
# Single-symbol traits = b:1
"DOPPLE-2": {
"$CONSTANTS":
{
"b": 1,
"c": 8,
"d": 10
}
},
}
self.build_index = BuildIndexTester(profiles=self.raw_profiles,
session=session.Session())
# A dict of profile_symbols.
self.symbols_dict = dict([(x[0], x[1].get("$CONSTANTS"))
for x in self.raw_profiles.iteritems()])
def testFindTraits(self):
traits = self.build_index._FindTraits(
profile_id="P3",
profiles=self.symbols_dict,
num_traits=3, trait_length=1)
self.assertListEqual(sorted(traits),
[
[("b", 3)],
[("c", 5)],
[("d", 6)]
])
# We can't find any traits when there are duplicates
traits = self.build_index._FindTraits(
profile_id="P1",
profiles=self.symbols_dict,
num_traits=3, trait_length=1)
self.assertListEqual(sorted(traits), [])
# But if we remove duplicates, we find them.
symbols_dict_nodups = self.symbols_dict.copy()
symbols_dict_nodups.pop("P1-DUPLICATE")
symbols_dict_nodups.pop("P1-2")
traits = self.build_index._FindTraits(
profile_id="P1",
profiles=symbols_dict_nodups,
num_traits=3, trait_length=1)
self.assertListEqual(sorted(traits),
[
[("c", 3)]
])
# Some profiles simply don't have single symbol traits..
traits = self.build_index._FindTraits(
profile_id="DOPPLE",
profiles=self.symbols_dict,
num_traits=3, trait_length=1)
self.assertListEqual(sorted(traits), [])
# But we can find 2-symbol traits.
traits = self.build_index._FindTraits(
profile_id="DOPPLE",
profiles=self.symbols_dict,
num_traits=3, trait_length=2)
self.assertListEqual(sorted(traits),
[
[("b", 7), ("d", 10)],
])
def testFindProfilesWithSymbolOffset(self):
results = self.build_index._FindProfilesWithSymbolOffset(
"b", 7, profiles=self.symbols_dict)
self.assertEqual(results,
set(["DOPPLE-1", "DOPPLE"]))
results = self.build_index._FindProfilesWithSymbolOffset(
"NONEXISTING", 12, profiles=self.symbols_dict)
self.assertEqual(results, set())
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
unittest.main()
|