_xeroxz
4 years ago
parent
5246236cd3
commit
0e8d76b564
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#include <coff/archive.hpp>
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#include <coff/image.hpp>
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#include <theo/obf_pass.hpp>
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namespace theo
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{
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class engine_t
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{
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class swapchain_t
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{
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std::vector< std::uint8_t > front, back;
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std::vector< std::vector< std::uint8_t > > objs;
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public:
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class iff_t
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{
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/// <summary>
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/// swapchain_t is the only one who needs to call iff_t::flush...
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/// so its a friend class... flush is also private...
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/// </summary>
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friend class swapchain_t;
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public:
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struct section_t
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{
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coff::section_header_t header;
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std::vector< std::pair< std::uint32_t, coff::symbol_t > > symbols;
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};
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explicit iff_t( coff::image_t *img );
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std::vector< section_t > sections;
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private:
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/// <summary>
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/// flush changes from "sections" back to img...
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/// </summary>
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void flush();
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coff::image_t *img;
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};
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explicit swapchain_t( const std::vector< std::uint8_t > &img );
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std::shared_ptr< swapchain_t > make( const std::vector< std::uint8_t > &img );
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void swap( std::vector< iff_t > &iffs );
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};
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public:
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explicit engine_t( const std::vector< std::uint8_t > &lib_img );
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void add_pass( const obf_pass_t &pass );
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void run( std::vector< std::uint8_t > &result );
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private:
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swapchain_t swap;
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std::vector< theo::obf_pass_t > passes;
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};
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} // namespace theo
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@ -0,0 +1,23 @@
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#include <xtils.hpp>
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#include <theo/symbol.hpp>
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namespace theo
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{
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class obf_pass_t
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{
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friend class engine_t;
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public:
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enum class lvl_t
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{
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l_section,
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l_function,
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l_instr
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};
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obf_pass_t( const lvl_t &pass_lvl );
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private:
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virtual void callback() = 0;
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lvl_t lvl;
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};
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} // namespace theo
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@ -0,0 +1,10 @@
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#include <xtils.hpp>
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namespace llo
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{
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class symbol_t
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{
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public:
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};
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}
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@ -0,0 +1,49 @@
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#include <theo/engine.hpp>
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namespace theo
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{
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engine_t::swapchain_t::iff_t::iff_t( coff::image_t *img )
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{
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// add sections to iff...
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std::for_each( img->get_sections(), img->get_sections() + img->file_header.num_sections,
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[ & ]( const coff::section_header_t §ion_header ) {
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sections.emplace_back( section_header );
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// add symbols to section...
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const auto num_symbols = img->file_header.num_symbols;
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for ( auto idx = 0u; idx < num_symbols; ++idx )
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// important to note that we are making a COPY of this symbol...
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sections.back().symbols.push_back( { idx, *img->get_symbol( idx ) } );
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} );
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}
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void engine_t::swapchain_t::iff_t::flush()
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{
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// for each section, loop over symbols to see if they have changed...
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std::for_each( sections.begin(), sections.end(), [ & ]( const iff_t::section_t &iff_section ) {
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std::for_each( iff_section.symbols.begin(), iff_section.symbols.end(), [ & ]( const auto &symbol_data ) {
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const auto &[ symbol_idx, symbol ] = symbol_data;
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img->get_symbol( symbol_idx )->value = symbol.value;
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} );
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} );
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}
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engine_t::swapchain_t::swapchain_t( const std::vector< std::uint8_t > &img ) : front( img ), back( img )
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{
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ar::view lib( front.data(), front.size() );
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// extract obj files from lib archive...
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std::for_each( lib.begin(), lib.end(), [ & ]( const auto &coff_data ) {
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const auto &[ coff_name, coff_img ] = coff_data;
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objs.push_back( { coff_img.begin(), coff_img.end() } );
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} );
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}
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std::shared_ptr< engine_t::swapchain_t > engine_t::swapchain_t::make( const std::vector< std::uint8_t > &img )
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{
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return std::make_shared< engine_t::swapchain_t >( img );
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}
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engine_t::engine_t( const std::vector< std::uint8_t > &lib_img ) : swap{ lib_img }
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{
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}
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} // namespace theo
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