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scripts: test for MACHO control flow instrumentation

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fanquake 2021-05-09 11:33:41 +08:00
parent 469a5bc4fa
commit 42b589d18f
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2 changed files with 22 additions and 6 deletions
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16
contrib/devtools/security-check.py
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@ -188,6 +188,19 @@ def check_NX(executable) -> bool:
binary = lief.parse(executable)
return binary.has_nx
def check_control_flow(executable) -> bool:
'''
Check for control flow instrumentation
'''
binary = lief.parse(executable)
content = binary.get_content_from_virtual_address(binary.entrypoint, 4, lief.Binary.VA_TYPES.AUTO)
if content == [243, 15, 30, 250]: # endbr64
return True
return False
CHECKS = {
'ELF': [
('PIE', check_ELF_PIE),
@ -208,7 +221,8 @@ CHECKS = {
('NOUNDEFS', check_MACHO_NOUNDEFS),
('NX', check_NX),
('LAZY_BINDINGS', check_MACHO_LAZY_BINDINGS),
('Canary', check_MACHO_Canary)
('Canary', check_MACHO_Canary),
('CONTROL_FLOW', check_control_flow),
]
}

12
contrib/devtools/test-security-check.py
View file

@ -77,16 +77,18 @@ class TestSecurityChecks(unittest.TestCase):
write_testcode(source)
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-Wl,-allow_stack_execute','-fno-stack-protector']),
(1, executable+': failed PIE NOUNDEFS NX LAZY_BINDINGS Canary'))
(1, executable+': failed PIE NOUNDEFS NX LAZY_BINDINGS Canary CONTROL_FLOW'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-Wl,-allow_stack_execute','-fstack-protector-all']),
(1, executable+': failed PIE NOUNDEFS NX LAZY_BINDINGS'))
(1, executable+': failed PIE NOUNDEFS NX LAZY_BINDINGS CONTROL_FLOW'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-flat_namespace','-fstack-protector-all']),
(1, executable+': failed PIE NOUNDEFS LAZY_BINDINGS'))
(1, executable+': failed PIE NOUNDEFS LAZY_BINDINGS CONTROL_FLOW'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-fstack-protector-all']),
(1, executable+': failed PIE LAZY_BINDINGS'))
(1, executable+': failed PIE LAZY_BINDINGS CONTROL_FLOW'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-bind_at_load','-fstack-protector-all']),
(1, executable+': failed PIE CONTROL_FLOW'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-no_pie','-Wl,-bind_at_load','-fstack-protector-all', '-fcf-protection=full']),
(1, executable+': failed PIE'))
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-pie','-Wl,-bind_at_load','-fstack-protector-all']),
self.assertEqual(call_security_check(cc, source, executable, ['-Wl,-pie','-Wl,-bind_at_load','-fstack-protector-all', '-fcf-protection=full']),
(0, ''))
clean_files(source, executable)