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Fix injection_thread.py #493

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self.get_argument returns a string so whether the target process and source process are equal or not, it always be true, so we need to convert it to integer

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Hello @para0x0dise, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request addresses an issue where the ProcessId argument obtained using self.get_argument was being treated as a string instead of an integer. This caused incorrect comparisons between the target process ID and the source process ID. To resolve this, I've converted the procid variable to an integer using int(self.get_argument(call, "ProcessId")) in the on_call method within the injection_thread.py file. This ensures accurate comparisons and fixes the original bug.

Highlights

  • Type Conversion: The core change involves converting the ProcessId argument to an integer to ensure correct comparisons.
  • Bug Fix: This change fixes a bug where process ID comparisons were always evaluating to true due to incorrect type handling.

Changelog

  • modules/signatures/windows/injection_thread.py
    • Converted the ProcessId argument from string to integer using int().
    • Ensured correct comparison between target and source process IDs.
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A string it was, causing much strife,
Compared to an int, a different life.
Now cast as a number,
The comparisons slumber,
And equality reigns, sharp as a knife.

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Code Review

The pull request aims to fix a bug where process IDs were being compared as strings instead of integers, leading to incorrect comparisons. The change converts the ProcessId argument to an integer to ensure accurate comparisons. This is a crucial fix for the correct functionality of the signature.

Summary of Findings

  • Type Conversion: The conversion of ProcessId to an integer is essential for correct comparison. The original code treated the process ID as a string, which always resulted in a true comparison, regardless of the actual values. Converting it to an integer ensures that the comparison is based on numerical values, leading to accurate results.

Merge Readiness

The code change addresses a critical bug that could lead to incorrect analysis results. The conversion to an integer is necessary for the correct comparison of process IDs. Given the importance of this fix, I recommend merging the pull request after addressing the review comments. I am unable to approve the pull request, and users should have others review and approve this code before merging.

@@ -35,8 +35,9 @@ def __init__(self, *args, **kwargs):
self.targetpid = []

def on_call(self, call, process):
procid = self.get_argument(call, "ProcessId")
procid = int(self.get_argument(call, "ProcessId"))
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high

Converting the ProcessId to an integer ensures that the comparison is done numerically rather than lexicographically. This is crucial for the correct logic of the signature. Consider adding a try-except block to handle potential ValueError if the argument is not a valid integer, to prevent the signature from crashing.

        try:
            procid = int(self.get_argument(call, "ProcessId"))
        except ValueError:
            procid = -1  # Or some other default value, and log the error

@para0x0dise para0x0dise changed the title Convert the target process id to integer for convenient comparison Fix injection_thread.py Apr 23, 2025
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