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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_ef99456410776b930b88f5850437ce61.html">obf</a></li><li class="navelem"><a class="el" href="dir_fa1ee7704f0ab8e5fd961a68bf21be50.html">transform</a></li> </ul>
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<div class="title">gen.hpp</div> </div>
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<a href="gen_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright (c) 2022, _xeroxz</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// modification, are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">// 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// and/or other materials provided with the distribution.</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="transform_8hpp.html">obf/transform/transform.hpp</a>&gt;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="reloc_8hpp.html">recomp/reloc.hpp</a>&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacetheo_1_1obf_1_1transform.html">theo::obf::transform</a> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704"> 45</a></span>&#160;<span class="keyword">inline</span> std::vector&lt;std::uint8_t&gt; <a class="code" href="namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704">generate</a>(xed_decoded_inst_t* inst,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <a class="code" href="classtheo_1_1recomp_1_1reloc__t.html">recomp::reloc_t</a>* reloc,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; std::uint8_t low,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; std::uint8_t high) {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">auto</span> num_transforms = <a class="code" href="classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(low, high);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">auto</span> num_ops = <a class="code" href="namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>.size();</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; std::vector&lt;std::uint8_t&gt; new_inst_bytes;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; std::uint32_t inst_len = {};</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; std::uint8_t inst_buff[XED_MAX_INSTRUCTION_BYTES];</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; xed_encoder_request_t req;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; xed_state_t istate{XED_MACHINE_MODE_LONG_64, XED_ADDRESS_WIDTH_64b};</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; xed_encoder_request_zero_set_mode(&amp;req, &amp;istate);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; xed_encoder_request_set_effective_operand_width(&amp;req, 64);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; xed_encoder_request_set_iclass(&amp;req, XED_ICLASS_PUSHFQ);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; xed_encode(&amp;req, inst_buff, <span class="keyword">sizeof</span>(inst_buff), &amp;inst_len);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; new_inst_bytes.insert(new_inst_bytes.end(), inst_buff, inst_buff + inst_len);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">auto</span> cnt = 0u; cnt &lt; num_transforms; ++cnt) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; std::uint32_t imm = <a class="code" href="classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; 0, std::numeric_limits&lt;std::int32_t&gt;::max());</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">auto</span> itr = <a class="code" href="namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>.begin();</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; std::advance(itr, <a class="code" href="classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">transform::operation_t::random</a>(0, num_ops - 1));</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">auto</span> transform_bytes = itr-&gt;second-&gt;native(inst, imm);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; new_inst_bytes.insert(new_inst_bytes.end(), transform_bytes.begin(),</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; transform_bytes.end());</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; reloc-&gt;<a class="code" href="classtheo_1_1recomp_1_1reloc__t.html#ab5214a9ff9135672e25f40406c37fb10">add_transform</a>(</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; {<a class="code" href="namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">transform::operations</a>[itr-&gt;second-&gt;inverse()]-&gt;get_transform(), imm});</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; xed_encoder_request_zero_set_mode(&amp;req, &amp;istate);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; xed_encoder_request_set_effective_operand_width(&amp;req, 64);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; xed_encoder_request_set_iclass(&amp;req, XED_ICLASS_POPFQ);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; xed_encode(&amp;req, inst_buff, <span class="keyword">sizeof</span>(inst_buff), &amp;inst_len);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; new_inst_bytes.insert(new_inst_bytes.end(), inst_buff, inst_buff + inst_len);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="comment">// inverse the order in which the transformations are executed...</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="comment">//</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; std::reverse(reloc-&gt;<a class="code" href="classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">get_transforms</a>().begin(), reloc-&gt;<a class="code" href="classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">get_transforms</a>().end());</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">return</span> new_inst_bytes;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;} <span class="comment">// namespace theo::obf::transform</span></div>
<div class="ttc" id="aclasstheo_1_1obf_1_1transform_1_1operation__t_html_aaa5859bc3c7f95d99d4d726289593488"><div class="ttname"><a href="classtheo_1_1obf_1_1transform_1_1operation__t.html#aaa5859bc3c7f95d99d4d726289593488">theo::obf::transform::operation_t::random</a></div><div class="ttdeci">static std::size_t random(std::size_t lowest, std::size_t largest)</div><div class="ttdoc">generate a random number in a range.</div><div class="ttdef"><b>Definition:</b> <a href="operation_8hpp_source.html#l00148">operation.hpp:148</a></div></div>
<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html"><div class="ttname"><a href="classtheo_1_1recomp_1_1reloc__t.html">theo::recomp::reloc_t</a></div><div class="ttdoc">meta data about a relocation for a symbol</div><div class="ttdef"><b>Definition:</b> <a href="reloc_8hpp_source.html#l00041">reloc.hpp:41</a></div></div>
<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html_ab5214a9ff9135672e25f40406c37fb10"><div class="ttname"><a href="classtheo_1_1recomp_1_1reloc__t.html#ab5214a9ff9135672e25f40406c37fb10">theo::recomp::reloc_t::add_transform</a></div><div class="ttdeci">void add_transform(std::pair&lt; obf::transform::transform_t *, std::uint32_t &gt; entry)</div><div class="ttdoc">adds a transformation to be applied to the relocation prior to writing it into the symbol.</div><div class="ttdef"><b>Definition:</b> <a href="reloc_8hpp_source.html#l00091">reloc.hpp:91</a></div></div>
<div class="ttc" id="aclasstheo_1_1recomp_1_1reloc__t_html_ad49901bf8b6b0e3963e64d17d4b51aec"><div class="ttname"><a href="classtheo_1_1recomp_1_1reloc__t.html#ad49901bf8b6b0e3963e64d17d4b51aec">theo::recomp::reloc_t::get_transforms</a></div><div class="ttdeci">std::vector&lt; std::pair&lt; obf::transform::transform_t *, std::uint32_t &gt; &gt; &amp; get_transforms()</div><div class="ttdoc">gets the vector of transformation.</div><div class="ttdef"><b>Definition:</b> <a href="reloc_8hpp_source.html#l00101">reloc.hpp:101</a></div></div>
<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html"><div class="ttname"><a href="namespacetheo_1_1obf_1_1transform.html">theo::obf::transform</a></div><div class="ttdoc">this namespace encompasses the code for transforming relocations.</div><div class="ttdef"><b>Definition:</b> <a href="add__op_8hpp_source.html#l00034">add_op.hpp:34</a></div></div>
<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html_a416c6c93ce55a4ab9f70592951d15704"><div class="ttname"><a href="namespacetheo_1_1obf_1_1transform.html#a416c6c93ce55a4ab9f70592951d15704">theo::obf::transform::generate</a></div><div class="ttdeci">std::vector&lt; std::uint8_t &gt; generate(xed_decoded_inst_t *inst, recomp::reloc_t *reloc, std::uint8_t low, std::uint8_t high)</div><div class="ttdoc">generate a sequence of transformations given an instruction that has a relocation in it.</div><div class="ttdef"><b>Definition:</b> <a href="gen_8hpp_source.html#l00045">gen.hpp:45</a></div></div>
<div class="ttc" id="anamespacetheo_1_1obf_1_1transform_html_a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0"><div class="ttname"><a href="namespacetheo_1_1obf_1_1transform.html#a6a4b1d5c0c9c2ea1f0b4ec8f5aba48b0">theo::obf::transform::operations</a></div><div class="ttdeci">std::map&lt; xed_iclass_enum_t, operation_t * &gt; operations</div><div class="ttdoc">map of all of the operations and their type.</div><div class="ttdef"><b>Definition:</b> <a href="transform_8hpp_source.html#l00042">transform.hpp:42</a></div></div>
<div class="ttc" id="areloc_8hpp_html"><div class="ttname"><a href="reloc_8hpp.html">reloc.hpp</a></div></div>
<div class="ttc" id="atransform_8hpp_html"><div class="ttname"><a href="transform_8hpp.html">transform.hpp</a></div></div>
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