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metasploit-gs/api/Msf/Exe/SegmentAppender.html
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Class: Msf::Exe::SegmentAppender
&mdash; Documentation by YARD 0.9.37
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<div id="content"><h1>Class: Msf::Exe::SegmentAppender
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName"><span class='object_link'><a href="SegmentInjector.html" title="Msf::Exe::SegmentInjector (class)">SegmentInjector</a></span></span>
<ul class="fullTree">
<li>Object</li>
<li class="next"><span class='object_link'><a href="SegmentInjector.html" title="Msf::Exe::SegmentInjector (class)">SegmentInjector</a></span></li>
<li class="next">Msf::Exe::SegmentAppender</li>
</ul>
<a href="#" class="inheritanceTree">show all</a>
</dd>
</dl>
<dl>
<dt>Defined in:</dt>
<dd>lib/msf/core/exe/segment_appender.rb</dd>
</dl>
</div>
<h2>Instance Attribute Summary</h2>
<h3 class="inherited">Attributes inherited from <span class='object_link'><a href="SegmentInjector.html" title="Msf::Exe::SegmentInjector (class)">SegmentInjector</a></span></h3>
<p class="inherited"><span class='object_link'><a href="SegmentInjector.html#arch-instance_method" title="Msf::Exe::SegmentInjector#arch (method)">#arch</a></span>, <span class='object_link'><a href="SegmentInjector.html#buffer_register-instance_method" title="Msf::Exe::SegmentInjector#buffer_register (method)">#buffer_register</a></span>, <span class='object_link'><a href="SegmentInjector.html#payload-instance_method" title="Msf::Exe::SegmentInjector#payload (method)">#payload</a></span>, <span class='object_link'><a href="SegmentInjector.html#secname-instance_method" title="Msf::Exe::SegmentInjector#secname (method)">#secname</a></span>, <span class='object_link'><a href="SegmentInjector.html#template-instance_method" title="Msf::Exe::SegmentInjector#template (method)">#template</a></span></p>
<h2>
Instance Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#generate_pe-instance_method" title="#generate_pe (instance method)">#<strong>generate_pe</strong> &#x21d2; Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#payload_stub-instance_method" title="#payload_stub (instance method)">#<strong>payload_stub</strong>(prefix) &#x21d2; Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
</ul>
<h3 class="inherited">Methods inherited from <span class='object_link'><a href="SegmentInjector.html" title="Msf::Exe::SegmentInjector (class)">SegmentInjector</a></span></h3>
<p class="inherited"><span class='object_link'><a href="SegmentInjector.html#create_thread_stub-instance_method" title="Msf::Exe::SegmentInjector#create_thread_stub (method)">#create_thread_stub</a></span>, <span class='object_link'><a href="SegmentInjector.html#create_thread_stub_x64-instance_method" title="Msf::Exe::SegmentInjector#create_thread_stub_x64 (method)">#create_thread_stub_x64</a></span>, <span class='object_link'><a href="SegmentInjector.html#create_thread_stub_x86-instance_method" title="Msf::Exe::SegmentInjector#create_thread_stub_x86 (method)">#create_thread_stub_x86</a></span>, <span class='object_link'><a href="SegmentInjector.html#dll_prefix-instance_method" title="Msf::Exe::SegmentInjector#dll_prefix (method)">#dll_prefix</a></span>, <span class='object_link'><a href="SegmentInjector.html#initialize-instance_method" title="Msf::Exe::SegmentInjector#initialize (method)">#initialize</a></span>, <span class='object_link'><a href="SegmentInjector.html#is_warbird%3F-instance_method" title="Msf::Exe::SegmentInjector#is_warbird? (method)">#is_warbird?</a></span>, <span class='object_link'><a href="SegmentInjector.html#processor-instance_method" title="Msf::Exe::SegmentInjector#processor (method)">#processor</a></span></p>
<div id="constructor_details" class="method_details_list">
<h2>Constructor Details</h2>
<p class="notice">This class inherits a constructor from <span class='object_link'><a href="SegmentInjector.html#initialize-instance_method" title="Msf::Exe::SegmentInjector#initialize (method)">Msf::Exe::SegmentInjector</a></span></p>
</div>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="generate_pe-instance_method">
#<strong>generate_pe</strong> &#x21d2; <tt>Object</tt>
</h3><table class="source_code">
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<pre class="code"><span class="info file"># File 'lib/msf/core/exe/segment_appender.rb', line 14</span>
<span class='kw'>def</span> <span class='id identifier rubyid_generate_pe'>generate_pe</span>
<span class='comment'># Copy our Template into a new PE
</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span> <span class='op'>=</span> <span class='const'>Metasm</span><span class='op'>::</span><span class='const'>PE</span><span class='period'>.</span><span class='id identifier rubyid_decode_file'>decode_file</span><span class='lparen'>(</span><span class='id identifier rubyid_template'>template</span><span class='rparen'>)</span>
<span class='id identifier rubyid_pe'>pe</span> <span class='op'>=</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_mini_copy'>mini_copy</span>
<span class='comment'># Copy the headers and exports
</span> <span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_mz'>mz</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span> <span class='op'>=</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span><span class='lbracket'>[</span><span class='int'>0</span><span class='comma'>,</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_coff_offset'>coff_offset</span><span class='op'>-</span><span class='int'>4</span><span class='rbracket'>]</span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_mz'>mz</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span><span class='period'>.</span><span class='id identifier rubyid_export'>export</span> <span class='op'>=</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span><span class='lbracket'>[</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>512</span><span class='rbracket'>]</span><span class='period'>.</span><span class='id identifier rubyid_export'>export</span><span class='period'>.</span><span class='id identifier rubyid_dup'>dup</span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_header'>header</span><span class='period'>.</span><span class='id identifier rubyid_time'>time</span> <span class='op'>=</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_header'>header</span><span class='period'>.</span><span class='id identifier rubyid_time'>time</span>
<span class='comment'># Don&#39;t rebase if we can help it since Metasm doesn&#39;t do relocations well
</span> <span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_optheader'>optheader</span><span class='period'>.</span><span class='id identifier rubyid_dll_characts'>dll_characts</span><span class='period'>.</span><span class='id identifier rubyid_delete'>delete</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>DYNAMIC_BASE</span><span class='tstring_end'>&quot;</span></span><span class='rparen'>)</span>
<span class='comment'># TODO: Look at supporting DLLs in the future
</span> <span class='id identifier rubyid_prefix'>prefix</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_end'>&#39;</span></span>
<span class='comment'># Create a new section
</span> <span class='id identifier rubyid_s'>s</span> <span class='op'>=</span> <span class='const'>Metasm</span><span class='op'>::</span><span class='const'>PE</span><span class='op'>::</span><span class='const'>Section</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span>
<span class='kw'>if</span> <span class='id identifier rubyid_secname'>secname</span><span class='period'>.</span><span class='id identifier rubyid_blank?'>blank?</span>
<span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_name'>name</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>.</span><span class='tstring_end'>&#39;</span></span> <span class='op'>+</span> <span class='const'><span class='object_link'><a href="../../Rex.html" title="Rex (module)">Rex</a></span></span><span class='op'>::</span><span class='const'>Text</span><span class='period'>.</span><span class='id identifier rubyid_rand_text_alpha_lower'>rand_text_alpha_lower</span><span class='lparen'>(</span><span class='int'>4</span><span class='rparen'>)</span>
<span class='kw'>else</span>
<span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_name'>name</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>.</span><span class='tstring_end'>&#39;</span></span> <span class='op'>+</span> <span class='id identifier rubyid_secname'>secname</span><span class='period'>.</span><span class='id identifier rubyid_downcase'>downcase</span>
<span class='kw'>end</span>
<span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span> <span class='op'>=</span> <span class='id identifier rubyid_payload_stub'>payload_stub</span> <span class='id identifier rubyid_prefix'>prefix</span>
<span class='id identifier rubyid_s'>s</span><span class='period'>.</span><span class='id identifier rubyid_characteristics'>characteristics</span> <span class='op'>=</span> <span class='qwords_beg'>%w[</span><span class='tstring_content'>MEM_READ</span><span class='words_sep'> </span><span class='tstring_content'>MEM_WRITE</span><span class='words_sep'> </span><span class='tstring_content'>MEM_EXECUTE</span><span class='tstring_end'>]</span></span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_sections'>sections</span> <span class='op'>&lt;&lt;</span> <span class='id identifier rubyid_s'>s</span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_invalidate_header'>invalidate_header</span>
<span class='comment'># Change the entrypoint to our new section
</span> <span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_optheader'>optheader</span><span class='period'>.</span><span class='id identifier rubyid_entrypoint'>entrypoint</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>new_entrypoint</span><span class='tstring_end'>&#39;</span></span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_cpu'>cpu</span> <span class='op'>=</span> <span class='id identifier rubyid_pe_orig'>pe_orig</span><span class='period'>.</span><span class='id identifier rubyid_cpu'>cpu</span>
<span class='id identifier rubyid_pe'>pe</span><span class='period'>.</span><span class='id identifier rubyid_encode_string'>encode_string</span>
<span class='kw'>end</span></pre>
</td>
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</table>
</div>
<div class="method_details ">
<h3 class="signature " id="payload_stub-instance_method">
#<strong>payload_stub</strong>(prefix) &#x21d2; <tt>Object</tt>
</h3><table class="source_code">
<tr>
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<pre class="code"><span class="info file"># File 'lib/msf/core/exe/segment_appender.rb', line 7</span>
<span class='kw'>def</span> <span class='id identifier rubyid_payload_stub'>payload_stub</span><span class='lparen'>(</span><span class='id identifier rubyid_prefix'>prefix</span><span class='rparen'>)</span>
<span class='comment'># TODO: Implement possibly helpful payload obfuscation
</span> <span class='id identifier rubyid_asm'>asm</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>new_entrypoint:\n</span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_prefix'>prefix</span><span class='embexpr_end'>}</span><span class='tstring_content'>\n</span><span class='tstring_end'>&quot;</span></span>
<span class='id identifier rubyid_shellcode'>shellcode</span> <span class='op'>=</span> <span class='const'>Metasm</span><span class='op'>::</span><span class='const'>Shellcode</span><span class='period'>.</span><span class='id identifier rubyid_assemble'>assemble</span><span class='lparen'>(</span><span class='id identifier rubyid_processor'>processor</span><span class='comma'>,</span> <span class='id identifier rubyid_asm'>asm</span><span class='rparen'>)</span>
<span class='id identifier rubyid_shellcode'>shellcode</span><span class='period'>.</span><span class='id identifier rubyid_encoded'>encoded</span> <span class='op'>+</span> <span class='ivar'>@payload</span>
<span class='kw'>end</span></pre>
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Generated on Fri May 8 17:03:31 2026 by
<a href="https://yardoc.org" title="Yay! A Ruby Documentation Tool" target="_parent">yard</a>
0.9.37 (ruby-3.1.5).
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