mirror of
https://github.com/QuasarApp/LIEF.git
synced 2025-05-20 23:29:32 +00:00
b94900ca7f
Major changes (features):
* Enable adding multiple sections/segments - Executable (PIE or not), Library
* Enable adding multiple dynamic entries (DT_NEEDED, DT_INIT etc)
* Enable adding multiple relocations
* Enable adding multiple dynamic symbols
* Enable segment replacement
Major changes (API):
* Getters Binary::get_*name*() has been renamed to "name()"
* Binary::add(const DynamicEntry& entry) - To add an entry in the dynamic table
* Section& Binary::add(const Section& section, bool loaded = true) - To add a section(s)
* Segment& Binary::add(const Segment& segment, uint64_t base = 0) - To add segments
* Segment& replace(const Segment& new_segment, const Segment& original_segment, uint64_t base = 0)
* Binary's last_offset_section(), last_offset_segment(), next_virtual_address()
to have information about offset
* Binary's add_library(), get_library(), has_library() to handle
DT_NEEDED entries
Other changes:
* Binary::insert_content() - Use add(const Section&) or add(const Segment&) instead
* ELF's DataHandler has been cleaned
* Through LIEF::Section one can look for integers, strings, data
within the section (see LIEF::Section::search,
LIEF::Section::search_all)
* Through LIEF::Binary one can get *xref* of a number (or address)
see LIEF::Binary::xref function
* To access to the Abstract binary in Python, one can now use
the 'abstract' attribute. (e.g. binary.abstract.header.is_32)
Resolve: #83
Resolve: #66
Resolve: #48
219 lines
7.5 KiB
Python
219 lines
7.5 KiB
Python
#!/usr/bin/env python
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import unittest
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import logging
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import os
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import sys
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import stat
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import re
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import subprocess
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import tempfile
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import shutil
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from subprocess import Popen
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import lief
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from lief.ELF import Segment
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from lief import Logger
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#Logger.set_level(lief.LOGGING_LEVEL.DEBUG)
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from unittest import TestCase
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from utils import get_sample
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CURRENT_DIRECTORY = os.path.dirname(os.path.abspath(__file__))
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class TestAddSegment(TestCase):
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def setUp(self):
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self.logger = logging.getLogger(__name__)
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self.tmp_dir = tempfile.mkdtemp(suffix='_lief_test_add_segment')
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self.logger.debug("temp dir: {}".format(self.tmp_dir))
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@unittest.skipUnless(sys.platform.startswith("linux"), "requires Linux")
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def test_simple(self):
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sample_path = get_sample('ELF/ELF64_x86-64_binary_ls.bin')
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stub = lief.parse(os.path.join(CURRENT_DIRECTORY, "hello_lief.bin"))
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output = os.path.join(self.tmp_dir, "ls.segment")
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target = lief.parse(sample_path)
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for i in range(4):
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segment = stub.segments[0]
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original_va = segment.virtual_address
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segment.virtual_address = 0
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segment = target.add(segment)
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new_ep = (stub.header.entrypoint - original_va) + segment.virtual_address
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target.header.entrypoint = new_ep
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target.write(output)
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st = os.stat(output)
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os.chmod(output, st.st_mode | stat.S_IEXEC)
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p = Popen(output, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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stdout, _ = p.communicate()
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self.logger.debug(stdout.decode("utf8"))
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self.assertIsNotNone(re.search(r'LIEF is Working', stdout.decode("utf8")))
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@unittest.skipUnless(sys.platform.startswith("linux"), "requires Linux")
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def test_gcc(self):
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sample_path = get_sample('ELF/ELF64_x86-64_binary_gcc.bin')
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stub = lief.parse(os.path.join(CURRENT_DIRECTORY, "hello_lief.bin"))
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output = os.path.join(self.tmp_dir, "gcc.segment")
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target = lief.parse(sample_path)
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segment = stub.segments[0]
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original_va = segment.virtual_address
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segment.virtual_address = 0
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segment = target.add(segment)
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new_ep = (stub.header.entrypoint - original_va) + segment.virtual_address
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target.header.entrypoint = new_ep
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target.write(output)
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st = os.stat(output)
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os.chmod(output, st.st_mode | stat.S_IEXEC)
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p = Popen(output, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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stdout, _ = p.communicate()
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self.logger.debug(stdout.decode("utf8"))
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self.assertIsNotNone(re.search(r'LIEF is Working', stdout.decode("utf8")))
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@unittest.skipUnless(sys.platform.startswith("linux"), "requires Linux")
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def test_static(self):
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sample_path = get_sample('ELF/ELF64_x86-64_binary_static-binary.bin')
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stub = lief.parse(os.path.join(CURRENT_DIRECTORY, "hello_lief.bin"))
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output = os.path.join(self.tmp_dir, "static.segment")
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target = lief.parse(sample_path)
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segment = stub.segments[0]
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original_va = segment.virtual_address
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segment.virtual_address = 0
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segment = target.add(segment)
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new_ep = (stub.header.entrypoint - original_va) + segment.virtual_address
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target.header.entrypoint = new_ep
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target.write(output)
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st = os.stat(output)
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os.chmod(output, st.st_mode | stat.S_IEXEC)
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p = Popen(output, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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stdout, _ = p.communicate()
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self.logger.debug(stdout.decode("utf8"))
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self.assertIsNotNone(re.search(r'LIEF is Working', stdout.decode("utf8")))
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@unittest.skipUnless(sys.platform.startswith("linux"), "requires Linux")
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def test_misc(self):
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list_binaries = [
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'/usr/bin/ls',
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'/usr/bin/ssh',
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'/usr/bin/nm',
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'/usr/bin/openssl',
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'/usr/bin/bc',
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'/usr/bin/bzip2',
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'/usr/bin/cp',
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'/usr/bin/find',
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'/usr/bin/file',
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]
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for binary in list_binaries:
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self.logger.debug("Test with '{}'".format(binary))
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self.run_add_segment(binary)
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def run_add_segment(self, target):
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if not os.path.isfile(target):
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return
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name = os.path.basename(target)
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stub = lief.parse(os.path.join(CURRENT_DIRECTORY, "hello_lief.bin"))
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target = lief.parse(target)
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output = os.path.join(self.tmp_dir, "{}.segment".format(name))
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for i in range(6):
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segment = stub.segments[0]
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original_va = segment.virtual_address
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segment.virtual_address = 0
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segment = target.add(segment)
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new_ep = (stub.header.entrypoint - original_va) + segment.virtual_address
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target.header.entrypoint = new_ep
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target.write(output)
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st = os.stat(output)
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os.chmod(output, st.st_mode | stat.S_IEXEC)
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p = Popen(output, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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stdout, _ = p.communicate()
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self.logger.debug(stdout.decode("utf8"))
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self.assertIsNotNone(re.search(r'LIEF is Working', stdout.decode("utf8")))
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@unittest.skipUnless(False, "requires Linux")
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def test_libc(self):
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stub = lief.parse(os.path.join(CURRENT_DIRECTORY, "hello_lief.bin"))
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tmp_dir = tempfile.mkdtemp(suffix='_lief_test_add_segment_libc')
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self.logger.debug("temp dir: {}".format(tmp_dir))
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libc_name = "libc.so.6"
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for e in lief.parse("/bin/ls").libraries:
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if e.startswith("libc."):
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libc_name = e
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break;
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self.logger.debug("libc used: {}".format(libc_name))
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libc = lief.parse('/usr/lib/{}'.format(libc_name))
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out = os.path.join(tmp_dir, libc_name)
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for i in range(10):
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segment = stub.segments[0]
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original_va = segment.virtual_address
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segment.virtual_address = 0
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segment = libc.add(segment)
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new_ep = (stub.header.entrypoint - original_va) + segment.virtual_address
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if libc.has(lief.ELF.DYNAMIC_TAGS.INIT_ARRAY):
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init_array = libc.get(lief.ELF.DYNAMIC_TAGS.INIT_ARRAY)
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callbacks = init_array.array
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callbacks[0] = new_ep
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init_array.array = callbacks
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if libc.has(lief.ELF.DYNAMIC_TAGS.INIT):
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init = libc.get(lief.ELF.DYNAMIC_TAGS.INIT)
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init.value = new_ep
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libc.write(out)
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st = os.stat(out)
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os.chmod(out, st.st_mode | stat.S_IEXEC)
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p = Popen(["/usr/bin/ls"], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env={"LD_LIBRARY_PATH": tmp_dir})
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stdout, _ = p.communicate()
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self.logger.debug(stdout.decode("utf8"))
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self.assertIsNotNone(re.search(r'LIEF is Working', stdout.decode("utf8")))
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if os.path.isdir(tmp_dir):
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shutil.rmtree(tmp_dir)
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def tearDown(self):
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# Delete it
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if os.path.isdir(self.tmp_dir):
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shutil.rmtree(self.tmp_dir)
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if __name__ == '__main__':
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root_logger = logging.getLogger()
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root_logger.setLevel(logging.DEBUG)
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ch = logging.StreamHandler()
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ch.setLevel(logging.DEBUG)
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root_logger.addHandler(ch)
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unittest.main(verbosity=2)
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