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111 lines
6.3 KiB
111 lines
6.3 KiB
\hypertarget{classtheo_1_1obf_1_1reloc__transform__pass__t}{}\doxysection{theo\+::obf\+::reloc\+\_\+transform\+\_\+pass\+\_\+t Class Reference}
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\label{classtheo_1_1obf_1_1reloc__transform__pass__t}\index{theo::obf::reloc\_transform\_pass\_t@{theo::obf::reloc\_transform\_pass\_t}}
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this pass is like the next\+\_\+inst\+\_\+pass, however, relocations are encrypted with transformations instead of the address of the next instruction. this pass only runs at the instruction level and appends transformations into the reloc\+\_\+t object of the instruction symbol.
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{\ttfamily \#include $<$reloc\+\_\+transform\+\_\+pass.\+hpp$>$}
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Inheritance diagram for theo\+::obf\+::reloc\+\_\+transform\+\_\+pass\+\_\+t\+:\begin{figure}[H]
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\begin{center}
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\leavevmode
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\includegraphics[height=2.000000cm]{dc/d39/classtheo_1_1obf_1_1reloc__transform__pass__t}
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\end{center}
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\end{figure}
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\doxysubsection*{Public Member Functions}
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\begin{DoxyCompactItemize}
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\item
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void \mbox{\hyperlink{classtheo_1_1obf_1_1reloc__transform__pass__t_a24e122f6be18a88ea1809252ab3ec0b9}{run}} (\mbox{\hyperlink{classtheo_1_1decomp_1_1symbol__t}{decomp\+::symbol\+\_\+t}} $\ast$sym)
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\begin{DoxyCompactList}\small\item\em virtual method which must be implimented by the pass that inherits this class. \end{DoxyCompactList}\end{DoxyCompactItemize}
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\doxysubsection*{Static Public Member Functions}
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\begin{DoxyCompactItemize}
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\item
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static \mbox{\hyperlink{classtheo_1_1obf_1_1reloc__transform__pass__t}{reloc\+\_\+transform\+\_\+pass\+\_\+t}} $\ast$ \mbox{\hyperlink{classtheo_1_1obf_1_1reloc__transform__pass__t_a89aa46da5f721057cd8cf5189207d464}{get}} ()
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\end{DoxyCompactItemize}
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\doxysubsection{Detailed Description}
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this pass is like the next\+\_\+inst\+\_\+pass, however, relocations are encrypted with transformations instead of the address of the next instruction. this pass only runs at the instruction level and appends transformations into the reloc\+\_\+t object of the instruction symbol.
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given the following code\+: \begin{DoxyVerb}mov rax, &MessageBoxA
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\end{DoxyVerb}
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this pass will generate a random number of transformations to encrypt the address of \char`\"{}\+Message\+Box\+A\char`\"{}. These transformations will then be applied by theodosius internally when resolving relocations. \begin{DoxyVerb}mov rax, enc_MessageBoxA
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xor rax, 0x389284324
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add rax, 0x345332567
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ror rax, 0x5353
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\end{DoxyVerb}
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\doxysubsection{Member Function Documentation}
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\mbox{\Hypertarget{classtheo_1_1obf_1_1reloc__transform__pass__t_a89aa46da5f721057cd8cf5189207d464}\label{classtheo_1_1obf_1_1reloc__transform__pass__t_a89aa46da5f721057cd8cf5189207d464}}
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\index{theo::obf::reloc\_transform\_pass\_t@{theo::obf::reloc\_transform\_pass\_t}!get@{get}}
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\index{get@{get}!theo::obf::reloc\_transform\_pass\_t@{theo::obf::reloc\_transform\_pass\_t}}
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\doxysubsubsection{\texorpdfstring{get()}{get()}}
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{\footnotesize\ttfamily \mbox{\hyperlink{classtheo_1_1obf_1_1reloc__transform__pass__t}{reloc\+\_\+transform\+\_\+pass\+\_\+t}} $\ast$ theo\+::obf\+::reloc\+\_\+transform\+\_\+pass\+\_\+t\+::get (\begin{DoxyParamCaption}{ }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [static]}}
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\begin{DoxyCode}{0}
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\DoxyCodeLine{34 \{}
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\DoxyCodeLine{35 \textcolor{keyword}{static} reloc\_transform\_pass\_t obj;}
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\DoxyCodeLine{36 \textcolor{keywordflow}{return} \&obj;}
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\DoxyCodeLine{37 \}}
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\end{DoxyCode}
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\mbox{\Hypertarget{classtheo_1_1obf_1_1reloc__transform__pass__t_a24e122f6be18a88ea1809252ab3ec0b9}\label{classtheo_1_1obf_1_1reloc__transform__pass__t_a24e122f6be18a88ea1809252ab3ec0b9}}
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\index{theo::obf::reloc\_transform\_pass\_t@{theo::obf::reloc\_transform\_pass\_t}!run@{run}}
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\index{run@{run}!theo::obf::reloc\_transform\_pass\_t@{theo::obf::reloc\_transform\_pass\_t}}
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\doxysubsubsection{\texorpdfstring{run()}{run()}}
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{\footnotesize\ttfamily void theo\+::obf\+::reloc\+\_\+transform\+\_\+pass\+\_\+t\+::run (\begin{DoxyParamCaption}\item[{\mbox{\hyperlink{classtheo_1_1decomp_1_1symbol__t}{decomp\+::symbol\+\_\+t}} $\ast$}]{sym }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [virtual]}}
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virtual method which must be implimented by the pass that inherits this class.
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\begin{DoxyParams}{Parameters}
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{\em sym} & a symbol of the same type of m\+\_\+sym\+\_\+type.\\
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\hline
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\end{DoxyParams}
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Implements \mbox{\hyperlink{classtheo_1_1obf_1_1pass__t_acfadc013ff0754d66a18baffdb1a61d1}{theo\+::obf\+::pass\+\_\+t}}.
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\begin{DoxyCode}{0}
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\DoxyCodeLine{39 \{}
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\DoxyCodeLine{40 std::optional<recomp::reloc\_t*> reloc;}
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\DoxyCodeLine{41 \textcolor{keywordflow}{if} (!(reloc = has\_legit\_reloc(sym)).has\_value())}
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\DoxyCodeLine{42 \textcolor{keywordflow}{return};}
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\DoxyCodeLine{43 }
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\DoxyCodeLine{44 spdlog::info(\textcolor{stringliteral}{"{}adding transformations to relocation in symbol: \{\}"{}},}
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\DoxyCodeLine{45 sym-\/>name());}
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\DoxyCodeLine{46 }
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\DoxyCodeLine{47 xed\_error\_enum\_t err;}
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\DoxyCodeLine{48 xed\_decoded\_inst\_t inst;}
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\DoxyCodeLine{49 xed\_state\_t istate\{XED\_MACHINE\_MODE\_LONG\_64, XED\_ADDRESS\_WIDTH\_64b\};}
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\DoxyCodeLine{50 xed\_decoded\_inst\_zero\_set\_mode(\&inst, \&istate);}
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\DoxyCodeLine{51 }
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\DoxyCodeLine{52 \textcolor{keywordflow}{if} ((err = xed\_decode(\&inst, sym-\/>data().data(), sym-\/>data().size())) !=}
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\DoxyCodeLine{53 XED\_ERROR\_NONE) \{}
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\DoxyCodeLine{54 spdlog::error(\textcolor{stringliteral}{"{}failed to decode instruction, reason: \{\} in symbol: \{\}"{}},}
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\DoxyCodeLine{55 xed\_error\_enum\_t2str(err), sym-\/>name());}
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\DoxyCodeLine{56 }
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\DoxyCodeLine{57 assert(err == XED\_ERROR\_NONE);}
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\DoxyCodeLine{58 \}}
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\DoxyCodeLine{59 }
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\DoxyCodeLine{60 \textcolor{keyword}{auto} transforms\_bytes = \mbox{\hyperlink{namespacetheo_1_1obf_1_1transform_a416c6c93ce55a4ab9f70592951d15704}{transform::generate}}(\&inst, reloc.value(), 3, 6);}
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\DoxyCodeLine{61 sym-\/>data().insert(sym-\/>data().end(), transforms\_bytes.begin(),}
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\DoxyCodeLine{62 transforms\_bytes.end());}
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\DoxyCodeLine{63 \};}
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\end{DoxyCode}
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The documentation for this class was generated from the following files\+:\begin{DoxyCompactItemize}
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\item
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include/obf/passes/\mbox{\hyperlink{reloc__transform__pass_8hpp}{reloc\+\_\+transform\+\_\+pass.\+hpp}}\item
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src/obf/passes/\mbox{\hyperlink{reloc__transform__pass_8cpp}{reloc\+\_\+transform\+\_\+pass.\+cpp}}\end{DoxyCompactItemize}
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