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<h1>Source code for windows.debug.localdbg</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">collections</span> <span class="k">import</span> <span class="n">defaultdict</span>
<span class="kn">from</span> <span class="nn">contextlib</span> <span class="k">import</span> <span class="n">contextmanager</span>
<span class="kn">import</span> <span class="nn">windows</span>
<span class="kn">import</span> <span class="nn">windows.winobject.exception</span> <span class="k">as</span> <span class="nn">winexception</span>
<span class="kn">from</span> <span class="nn">windows</span> <span class="k">import</span> <span class="n">winproxy</span>
<span class="kn">from</span> <span class="nn">windows.generated_def</span> <span class="k">import</span> <span class="n">windef</span>
<span class="kn">from</span> <span class="nn">windows.generated_def.winstructs</span> <span class="k">import</span> <span class="o">*</span>
<span class="kn">from</span> <span class="nn">.breakpoints</span> <span class="k">import</span> <span class="o">*</span>
<div class="viewcode-block" id="LocalDebugger"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger">[docs]</a><span class="k">class</span> <span class="nc">LocalDebugger</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;A debugger interface around :func:`AddVectoredExceptionHandler`.</span>
<span class="sd"> Handle:</span>
<span class="sd"> * Standard BP (int3)</span>
<span class="sd"> * Hardware-Exec BP (DrX)&quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_reput_breakpoint</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">dict</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">callback_vectored</span> <span class="o">=</span> <span class="n">winexception</span><span class="o">.</span><span class="n">VectoredException</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">callback</span><span class="p">)</span>
<span class="n">winproxy</span><span class="o">.</span><span class="n">AddVectoredExceptionHandler</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">callback_vectored</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_callback_vectored</span> <span class="o">=</span> <span class="n">winexception</span><span class="o">.</span><span class="n">VectoredException</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_callback</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hxbp_info</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">windows</span><span class="o">.</span><span class="n">native_exec</span><span class="o">.</span><span class="n">create_function</span><span class="p">(</span><span class="s2">&quot;</span><span class="se">\xcc\xc3</span><span class="s2">&quot;</span><span class="p">,</span> <span class="p">[</span><span class="n">PVOID</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">veh_depth</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">exceptions_stack</span> <span class="o">=</span> <span class="p">[</span><span class="kc">None</span><span class="p">]</span>
<span class="nd">@contextmanager</span>
<span class="k">def</span> <span class="nf">NewCurrentException</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="k">try</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">exceptions_stack</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exc</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span> <span class="o">=</span> <span class="n">exc</span>
<span class="bp">self</span><span class="o">.</span><span class="n">veh_depth</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="k">yield</span> <span class="n">exc</span>
<span class="k">finally</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">exceptions_stack</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">exceptions_stack</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">veh_depth</span> <span class="o">-=</span> <span class="mi">1</span>
<div class="viewcode-block" id="LocalDebugger.get_exception_code"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.get_exception_code">[docs]</a> <span class="k">def</span> <span class="nf">get_exception_code</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Return ExceptionCode of current exception&quot;&quot;&quot;</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">ExceptionRecord</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">ExceptionCode</span></div>
<div class="viewcode-block" id="LocalDebugger.get_exception_context"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.get_exception_context">[docs]</a> <span class="k">def</span> <span class="nf">get_exception_context</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Return context of current exception&quot;&quot;&quot;</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">ContextRecord</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span></div>
<div class="viewcode-block" id="LocalDebugger.single_step"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.single_step">[docs]</a> <span class="k">def</span> <span class="nf">single_step</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Make the current thread to single step&quot;&quot;&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">EEFlags</span><span class="o">.</span><span class="n">TF</span> <span class="o">=</span> <span class="mi">1</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_EXECUTION</span></div>
<span class="k">def</span> <span class="nf">_pass_breakpoint</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">addr</span><span class="p">,</span> <span class="n">single_step</span><span class="p">):</span>
<span class="k">with</span> <span class="n">windows</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">VirtualProtected</span><span class="p">(</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">PAGE_EXECUTE_READWRITE</span><span class="p">):</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">addr</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span><span class="p">[</span><span class="n">addr</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_reput_breakpoint</span><span class="p">[</span><span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">[</span><span class="n">addr</span><span class="p">],</span> <span class="n">single_step</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">single_step</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">NewCurrentException</span><span class="p">(</span><span class="n">exc</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">handle_exception</span><span class="p">(</span><span class="n">exc</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">handle_exception</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="n">exp_code</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_code</span><span class="p">()</span>
<span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span>
<span class="n">exp_addr</span> <span class="o">=</span> <span class="n">context</span><span class="o">.</span><span class="n">pc</span>
<span class="k">if</span> <span class="n">exp_code</span> <span class="o">==</span> <span class="n">EXCEPTION_BREAKPOINT</span> <span class="ow">and</span> <span class="n">exp_addr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">[</span><span class="n">exp_addr</span><span class="p">]</span><span class="o">.</span><span class="n">trigger</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">)</span>
<span class="n">single_step</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">EEFlags</span><span class="o">.</span><span class="n">TF</span> <span class="c1"># single step activated by breakpoint</span>
<span class="k">if</span> <span class="n">exp_addr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">:</span> <span class="c1"># Breakpoint deleted itself ?</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pass_breakpoint</span><span class="p">(</span><span class="n">exp_addr</span><span class="p">,</span> <span class="n">single_step</span><span class="p">)</span>
<span class="k">return</span> <span class="n">EXCEPTION_CONTINUE_EXECUTION</span>
<span class="k">if</span> <span class="n">exp_code</span> <span class="o">==</span> <span class="n">EXCEPTION_SINGLE_STEP</span> <span class="ow">and</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reput_breakpoint</span><span class="p">:</span>
<span class="n">bp</span><span class="p">,</span> <span class="n">single_step</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reput_breakpoint</span><span class="p">[</span><span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span> <span class="o">=</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">read_memory</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">with</span> <span class="n">windows</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">VirtualProtected</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">PAGE_EXECUTE_READWRITE</span><span class="p">):</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\xcc</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reput_breakpoint</span><span class="p">[</span><span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">]</span>
<span class="k">if</span> <span class="n">single_step</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">on_exception</span><span class="p">(</span><span class="n">exc</span><span class="p">)</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_EXECUTION</span>
<span class="k">elif</span> <span class="n">exp_code</span> <span class="o">==</span> <span class="n">EXCEPTION_SINGLE_STEP</span> <span class="ow">and</span> <span class="n">exp_addr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">]:</span>
<span class="n">res</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">][</span><span class="n">exp_addr</span><span class="p">]</span><span class="o">.</span><span class="n">trigger</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">)</span>
<span class="n">context</span><span class="o">.</span><span class="n">EEFlags</span><span class="o">.</span><span class="n">RF</span> <span class="o">=</span> <span class="mi">1</span>
<span class="k">return</span> <span class="n">EXCEPTION_CONTINUE_EXECUTION</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">on_exception</span><span class="p">(</span><span class="n">exc</span><span class="p">)</span>
<div class="viewcode-block" id="LocalDebugger.on_exception"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.on_exception">[docs]</a> <span class="k">def</span> <span class="nf">on_exception</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Called on exception&quot;&quot;&quot;</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_code</span><span class="p">()</span> <span class="ow">in</span> <span class="n">winexception</span><span class="o">.</span><span class="n">exception_name_by_value</span><span class="p">:</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_SEARCH</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_EXECUTION</span></div>
<div class="viewcode-block" id="LocalDebugger.del_bp"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.del_bp">[docs]</a> <span class="k">def</span> <span class="nf">del_bp</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bp</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Delete a breakpoint&quot;&quot;&quot;</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">STANDARD_BP</span><span class="p">:</span>
<span class="k">with</span> <span class="n">windows</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">VirtualProtected</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">PAGE_EXECUTE_READWRITE</span><span class="p">):</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">])</span>
<span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span>
<span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span>
<span class="k">return</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">HARDWARE_EXEC_BP</span><span class="p">:</span>
<span class="n">threads_by_tid</span> <span class="o">=</span> <span class="p">{</span><span class="n">t</span><span class="o">.</span><span class="n">tid</span><span class="p">:</span> <span class="n">t</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">threads</span><span class="p">}</span>
<span class="k">for</span> <span class="n">tid</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">:</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">addr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">tid</span><span class="p">]</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">tid</span><span class="p">][</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span> <span class="o">==</span> <span class="n">bp</span><span class="p">:</span>
<span class="k">if</span> <span class="n">tid</span> <span class="o">==</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_self_thread</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_other_thread</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="n">threads_by_tid</span><span class="p">[</span><span class="n">tid</span><span class="p">])</span>
<span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">tid</span><span class="p">][</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span>
<span class="k">return</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s2">&quot;Unknow BP type </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">type</span><span class="p">))</span></div>
<div class="viewcode-block" id="LocalDebugger.add_bp"><a class="viewcode-back" href="../../../debug.html#windows.debug.LocalDebugger.add_bp">[docs]</a> <span class="k">def</span> <span class="nf">add_bp</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bp</span><span class="p">,</span> <span class="n">targets</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Add a breakpoint, bp is a &quot;class:`Breakpoint`</span>
<span class="sd"> If the ``bp`` type is ``STANDARD_BP``, target must be None.</span>
<span class="sd"> If the ``bp`` type is ``HARDWARE_EXEC_BP``, target can be None (all threads), or some threads of the process</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">HARDWARE_EXEC_BP</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">add_bp_hxbp</span><span class="p">(</span><span class="n">bp</span><span class="p">,</span> <span class="n">targets</span><span class="p">)</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">type</span> <span class="o">!=</span> <span class="n">STANDARD_BP</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s2">&quot;Unknow BP type </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">type</span><span class="p">))</span>
<span class="k">if</span> <span class="n">targets</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;LocalDebugger: STANDARD_BP doest not support targets </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">targets</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">breakpoints</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span> <span class="o">=</span> <span class="n">bp</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_memory_save</span><span class="p">[</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span> <span class="o">=</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">read_memory</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">with</span> <span class="n">windows</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">VirtualProtected</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">PAGE_EXECUTE_READWRITE</span><span class="p">):</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\xcc</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="k">return</span></div>
<span class="k">def</span> <span class="nf">add_bp_hxbp</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bp</span><span class="p">,</span> <span class="n">targets</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">bp</span><span class="o">.</span><span class="n">type</span> <span class="o">!=</span> <span class="n">HARDWARE_EXEC_BP</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s2">&quot;Add non standard-BP in LocalDebugger&quot;</span><span class="p">)</span>
<span class="k">if</span> <span class="n">targets</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">targets</span> <span class="o">=</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">threads</span>
<span class="k">for</span> <span class="n">thread</span> <span class="ow">in</span> <span class="n">targets</span><span class="p">:</span>
<span class="k">if</span> <span class="n">thread</span><span class="o">.</span><span class="n">owner</span><span class="o">.</span><span class="n">pid</span> <span class="o">!=</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">pid</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Cannot add HXBP to target in remote process </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">thread</span><span class="p">))</span>
<span class="k">if</span> <span class="n">thread</span><span class="o">.</span><span class="n">tid</span> <span class="o">==</span> <span class="n">windows</span><span class="o">.</span><span class="n">current_thread</span><span class="o">.</span><span class="n">tid</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_self_thread</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_other_thread</span><span class="p">(</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">,</span> <span class="n">thread</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_hxbp_breakpoint</span><span class="p">[</span><span class="n">thread</span><span class="o">.</span><span class="n">tid</span><span class="p">][</span><span class="n">bp</span><span class="o">.</span><span class="n">addr</span><span class="p">]</span> <span class="o">=</span> <span class="n">bp</span>
<span class="k">def</span> <span class="nf">setup_hxbp_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">NewCurrentException</span><span class="p">(</span><span class="n">exc</span><span class="p">):</span>
<span class="n">exp_code</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_code</span><span class="p">()</span>
<span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span>
<span class="n">exp_addr</span> <span class="o">=</span> <span class="n">context</span><span class="o">.</span><span class="n">pc</span>
<span class="n">hxbp_used</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_in_context</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">exp_addr</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\x90</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="c1"># Raising in the VEH is a bad idea..</span>
<span class="c1"># So better give the information to triggerer..</span>
<span class="k">if</span> <span class="n">hxbp_used</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">Eax</span> <span class="o">=</span> <span class="n">exp_addr</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">Eax</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_EXECUTION</span>
<span class="k">def</span> <span class="nf">remove_hxbp_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exc</span><span class="p">):</span>
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">NewCurrentException</span><span class="p">(</span><span class="n">exc</span><span class="p">):</span>
<span class="n">exp_code</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_code</span><span class="p">()</span>
<span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span>
<span class="n">exp_addr</span> <span class="o">=</span> <span class="n">context</span><span class="o">.</span><span class="n">pc</span>
<span class="n">hxbp_used</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_in_context</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">exp_addr</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\x90</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="c1"># Raising in the VEH is a bad idea..</span>
<span class="c1"># So better give the information to triggerer..</span>
<span class="k">if</span> <span class="n">hxbp_used</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">Eax</span> <span class="o">=</span> <span class="n">exp_addr</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">()</span><span class="o">.</span><span class="n">Eax</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">return</span> <span class="n">windef</span><span class="o">.</span><span class="n">EXCEPTION_CONTINUE_EXECUTION</span>
<span class="k">def</span> <span class="nf">setup_hxbp_in_context</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">,</span> <span class="n">addr</span><span class="p">):</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">4</span><span class="p">):</span>
<span class="n">is_used</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="p">,</span> <span class="s2">&quot;L&quot;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
<span class="n">empty_drx</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">is_used</span><span class="p">:</span>
<span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="o">.</span><span class="n">GE</span> <span class="o">=</span> <span class="mi">1</span>
<span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="o">.</span><span class="n">LE</span> <span class="o">=</span> <span class="mi">1</span>
<span class="nb">setattr</span><span class="p">(</span><span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="p">,</span> <span class="s2">&quot;L&quot;</span> <span class="o">+</span> <span class="n">empty_drx</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="nb">setattr</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="s2">&quot;Dr&quot;</span> <span class="o">+</span> <span class="n">empty_drx</span><span class="p">,</span> <span class="n">addr</span><span class="p">)</span>
<span class="k">return</span> <span class="n">i</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">remove_hxbp_in_context</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">,</span> <span class="n">addr</span><span class="p">):</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">4</span><span class="p">):</span>
<span class="n">target_drx</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">)</span>
<span class="n">is_used</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="p">,</span> <span class="s2">&quot;L&quot;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
<span class="n">draddr</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="s2">&quot;Dr&quot;</span> <span class="o">+</span> <span class="n">target_drx</span><span class="p">)</span>
<span class="k">if</span> <span class="n">is_used</span> <span class="ow">and</span> <span class="n">draddr</span> <span class="o">==</span> <span class="n">addr</span><span class="p">:</span>
<span class="nb">setattr</span><span class="p">(</span><span class="n">context</span><span class="o">.</span><span class="n">EDr7</span><span class="p">,</span> <span class="s2">&quot;L&quot;</span> <span class="o">+</span> <span class="n">target_drx</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="nb">setattr</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="s2">&quot;Dr&quot;</span> <span class="o">+</span> <span class="n">target_drx</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">return</span> <span class="n">i</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">setup_hxbp_self_thread</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">addr</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_in_context</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">(),</span> <span class="n">addr</span><span class="p">)</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not setup HXBP&quot;</span><span class="p">)</span>
<span class="k">return</span>
<span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="n">addr</span>
<span class="k">with</span> <span class="n">winexception</span><span class="o">.</span><span class="n">VectoredExceptionHandler</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_callback</span><span class="p">):</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">()</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not setup HXBP&quot;</span><span class="p">)</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\xcc</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="k">return</span>
<span class="k">def</span> <span class="nf">setup_hxbp_other_thread</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">addr</span><span class="p">,</span> <span class="n">thread</span><span class="p">):</span>
<span class="n">thread</span><span class="o">.</span><span class="n">suspend</span><span class="p">()</span>
<span class="n">ctx</span> <span class="o">=</span> <span class="n">thread</span><span class="o">.</span><span class="n">context</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">setup_hxbp_in_context</span><span class="p">(</span><span class="n">ctx</span><span class="p">,</span> <span class="n">addr</span><span class="p">)</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not setup HXBP in </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">thread</span><span class="p">))</span>
<span class="n">thread</span><span class="o">.</span><span class="n">set_context</span><span class="p">(</span><span class="n">ctx</span><span class="p">)</span>
<span class="n">thread</span><span class="o">.</span><span class="n">resume</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">remove_hxbp_self_thread</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">addr</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_exception</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_in_context</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get_exception_context</span><span class="p">(),</span> <span class="n">addr</span><span class="p">)</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not setup HXBP&quot;</span><span class="p">)</span>
<span class="k">return</span>
<span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="n">addr</span>
<span class="k">with</span> <span class="n">winexception</span><span class="o">.</span><span class="n">VectoredExceptionHandler</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_callback</span><span class="p">):</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">()</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not remove HXBP&quot;</span><span class="p">)</span>
<span class="n">windows</span><span class="o">.</span><span class="n">current_process</span><span class="o">.</span><span class="n">write_memory</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="s2">&quot;</span><span class="se">\xcc</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="k">return</span>
<span class="k">def</span> <span class="nf">remove_hxbp_other_thread</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">addr</span><span class="p">,</span> <span class="n">thread</span><span class="p">):</span>
<span class="n">thread</span><span class="o">.</span><span class="n">suspend</span><span class="p">()</span>
<span class="n">ctx</span> <span class="o">=</span> <span class="n">thread</span><span class="o">.</span><span class="n">context</span>
<span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">remove_hxbp_in_context</span><span class="p">(</span><span class="n">ctx</span><span class="p">,</span> <span class="n">addr</span><span class="p">)</span>
<span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Could not setup HXBP in </span><span class="si">{0}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">thread</span><span class="p">))</span>
<span class="n">thread</span><span class="o">.</span><span class="n">set_context</span><span class="p">(</span><span class="n">ctx</span><span class="p">)</span>
<span class="n">thread</span><span class="o">.</span><span class="n">resume</span><span class="p">()</span></div>
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