Hey, I've run into this exact issue before when working with boofuzz on Windows 7 SP1, so let's break down what might be going on and how to fix it, given your Python 2.7.9 64-bit setup:

1. Architecture Mismatch or Permissions Issue #

Windows 7 SP1's 64-bit system has strict rules for the DebugActiveProcess API, especially if there's a bitness mismatch between your Python process and the target process you're trying to fuzz.

• First, confirm your Python 2.7.9's architecture: run python -c "import platform; print(platform.architecture())" in your command prompt. Make sure this matches the target process's bitness (32 vs 64-bit).
• Always run your boofuzz script as Administrator. Debugging APIs almost always require elevated privileges to work correctly on Windows—this is a super common fix for this exact error.

2. Outdated boofuzz Version #

Python 2.7 is end-of-life, and older boofuzz versions might have compatibility bugs with Windows 7 64-bit.

• Try installing the last stable boofuzz version that supports Python 2.7: run pip install boofuzz==0.2.0. This version was one of the last to maintain Python 2 compatibility, and it fixed several Windows-specific debugging issues I encountered.

3. Target Process State Problems #

The changing PID in your error suggests you might be trying to attach to a process that's either just starting up (and not ready for debugging) or has already exited.

• Double-check the timing in your fuzz(dst, dport) function: make sure the target process is fully running before calling any debugging-related code.
• You can verify the PID exists right before the error by running tasklist /FI "PID eq [YOUR_PID]" in a command prompt—replace [YOUR_PID] with the dynamic PID from your error message.

4. Windows Security Policy Restrictions #

Windows 7's default security policies might block your user account from using debugging APIs. Here's how to adjust that:

• Press Win+R, type secpol.msc and hit Enter to open Local Security Policy.
• Navigate to Local Policies > User Rights Assignment.
• Find the Debug programs policy, add your user account to the list of allowed users.
• Restart your computer and try running the script again.

Also, take a look at the process-launching code in your fuzz function—if you're spawning the target process yourself, make sure you aren't using flags like CREATE_NO_WINDOW or other attributes that might prevent external debugging tools from attaching.

内容的提问来源于stack exchange，提问作者plast1K