I download BFF and install it on my win11 arm64 virtual machine.But it report a error:

Yeah,I solve this problem.I replace the two prerequisites: <div class="snippet-cli

Run BFF on win11 arm64 about certfuzz HOT 6 CLOSED

certcc commented on September 25, 2024

Run BFF on win11 arm64

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Comments (6)

yuhui518 commented on September 25, 2024

It seems that Win11-ARM64 does not support the python2.7-Win32com library

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yuhui518 commented on September 25, 2024

Yeah,I solve this problem.I replace the two prerequisites:

double click pywin32-228.win-amd64-py2.7.exe
pip install numpy-1.13.0-cp27-none-win_amd64.whl

download pywin32-228.win-amd64-py2.7.exe from "https://github.com/mhammond/pywin32/releases/download/b228/pywin32-228.win-amd64-py2.7.exe";
download numpy-1.13.0-cp27-none-win_amd64.whl from "https://pypi.org/project/numpy/1.13.0/#files".

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yuhui518 commented on September 25, 2024

I will encounter many crashes when running BFF on Windows x64,but I did not encounter any crashes when running BFF on Windows arm64.Is there any problem on Windows arm64?

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ahouseholder commented on September 25, 2024

We never tested BFF for Windows on ARM, so unfortunately I can't say what you should expect.

BFF was primarily built to run on Intel 32-bit & 64-bit systems. While the python code itself should be fine on any architecture that can run python 2.7, some of that python is parsing debugger outputs, and so there could be architecture dependencies there.

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yuhui518 commented on September 25, 2024

We never tested BFF for Windows on ARM, so unfortunately I can't say what you should expect.

BFF was primarily built to run on Intel 32-bit & 64-bit systems. While the python code itself should be fine on any architecture that can run python 2.7, some of that python is parsing debugger outputs, and so there could be architecture dependencies there.

Thank you very much for your reply.Windows arm64 can run x64 applicatio,If there is code that relies on the CPU architecture, some problems may arise.

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ahouseholder commented on September 25, 2024

So I don't think we are going to do anything about arm64 support in the near term, but just to leave a breadcrumb for posterity, I did find at least one place where a potential improvement could be made to call attention to the fact that arm64 is not supported.

certfuzz/src/certfuzz/analyzers/cdbanalyze.py

Lines 10 to 11 in 3162f91

 _platforms = ['Windows'] 

 _platform_is_supported = platform.system() in _platforms

in cdbanalyzer.py there is a platform check that just checks to see that platform.system() returns "Windows". This could be replaced with a more robust check that, for example, platform.machine() or platform.processor() returns the expected strings.s

For example, I expect we might run into similar problems with macOS on Apple M* hardware since BFF was written in the age of Intel Macs. A check there could look for machine=x86_64 or processor=i386 etc.

Addressing the larger question of actually supporting Windows on arm64, certfuzz.debuggers.output_parsers.msec_file is probably the place to start, specifically focusing on

certfuzz/src/certfuzz/debuggers/output_parsers/msec_file.py

Lines 58 to 89 in 3162f91

 def _find_exploitability(self, line): 

 if line.startswith('Exploitability Classification'): 

 exploitability = self.split_and_strip(line) 

 # Count it as a crash as long as it has a classification 

 if exploitability and exploitability != 'NOT_AN_EXCEPTION': 

 self.passed.add('exploitability') 

 self.exp = exploitability 

 self.line_callbacks.remove(self._find_exploitability) 

 def _find_efa(self, line): 

 if line.startswith('Exception Faulting Address'): 

 efa = self.split_and_strip(line) 

 # turn it into a properly formatted string 

 self.faddr = '0x%08x' % int(efa, 16) 

 self.line_callbacks.remove(self._find_efa) 

 def _find_hash(self, line): 

 if line.startswith('Exception Hash'): 

 crash_hash = self.split_and_strip(line) 

 # count it as a crash as long as it has a hash 

 if crash_hash: 

 self.passed.add('crash_hash') 

 self.crash_hash = crash_hash 

 self.line_callbacks.remove(self._find_hash) 

 def _find_secondchance(self, line): 

 if '!!! second chance !!!' in line: 

 self.secondchance = True 

 self.line_callbacks.remove(self._find_secondchance)

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Run BFF on win11 arm64 about certfuzz HOT 6 CLOSED

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	_platforms = ['Windows']
	_platform_is_supported = platform.system() in _platforms

	def _find_exploitability(self, line):
	if line.startswith('Exploitability Classification'):
	exploitability = self.split_and_strip(line)

	# Count it as a crash as long as it has a classification
	if exploitability and exploitability != 'NOT_AN_EXCEPTION':
	self.passed.add('exploitability')

	self.exp = exploitability
	self.line_callbacks.remove(self._find_exploitability)

	def _find_efa(self, line):
	if line.startswith('Exception Faulting Address'):
	efa = self.split_and_strip(line)
	# turn it into a properly formatted string
	self.faddr = '0x%08x' % int(efa, 16)
	self.line_callbacks.remove(self._find_efa)

	def _find_hash(self, line):
	if line.startswith('Exception Hash'):
	crash_hash = self.split_and_strip(line)
	# count it as a crash as long as it has a hash
	if crash_hash:
	self.passed.add('crash_hash')

	self.crash_hash = crash_hash
	self.line_callbacks.remove(self._find_hash)

	def _find_secondchance(self, line):
	if '!!! second chance !!!' in line:
	self.secondchance = True
	self.line_callbacks.remove(self._find_secondchance)