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@ -1,7 +1,9 @@
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#define NOMINMAX
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#include <Windows.h>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <vtil/vtil>
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#include <ZydisExportConfig.h>
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#include <cli-parser.hpp>
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@ -24,6 +26,9 @@ int __cdecl main( int argc, const char *argv[] )
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.name( "--showblockinstrs" )
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.description( "show the virtual instructions of a specific code block..." );
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parser.add_argument().name( "--showallblocks" ).description( "shows all information for all code blocks..." );
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parser.add_argument()
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.name( "--devirt" )
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.description( "lift to VTIL IR and apply optimizations, then display the output..." );
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parser.enable_help();
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auto err = parser.parse( argc, argv );
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@ -180,6 +185,61 @@ int __cdecl main( int argc, const char *argv[] )
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}
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}
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if ( parser.exists( "devirt" ) )
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{
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vtil::basic_block *rtn = nullptr;
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for ( auto [ code_block, code_block_num ] = std::tuple{ first_block, 0u };
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code_block_num < file_header->code_block_count;
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code_block = reinterpret_cast< vmp2::v3::code_block_t * >(
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reinterpret_cast< std::uintptr_t >( code_block ) + code_block->next_block_offset ),
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++code_block_num )
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{
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rtn = rtn ? rtn->fork(
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ABS_TO_IMG( code_block->vip_begin, file_header->module_base, file_header->image_base ) )
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: vtil::basic_block::begin(
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ABS_TO_IMG( code_block->vip_begin, file_header->module_base, file_header->image_base ) );
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for ( auto idx = 0u; idx < code_block->vinstr_count; ++idx )
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{
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auto vinstr = &code_block->vinstr[ idx ];
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if ( vinstr->mnemonic_t == vm::handler::INVALID )
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{
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std::printf(
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"> unable to lift to VTIL... unknown virtual instruction handler #%d... "
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"please define a vm handler profile for this virtual instruction and try again..."
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" you can also create your first contribution to this open source project by submitting"
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" a merge request with your changes! :)\n",
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vinstr->opcode );
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return -1;
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}
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const auto result = std::find_if(
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vm::lifters::all.begin(), vm::lifters::all.end(),
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[ & ]( vm::lifters::lifter_t *lifter ) -> bool { return lifter->first == vinstr->mnemonic_t; } );
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if ( result == vm::lifters::all.end() )
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{
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std::printf(
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"> unable to lift to VTIL... unknown virtual instruction handler lifter for #%d... "
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"please define a vm handler lifter for this vm handler and try again..."
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" you can also create your first contribution to this open source project by submitting"
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" a merge request with your changes! :)\n",
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vinstr->opcode );
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return -1;
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}
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// lift the virtual instruction...
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( *result )->second( rtn, vinstr );
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}
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}
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vtil::optimizer::apply_all( rtn );
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vtil::debug::dump( rtn );
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return {};
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}
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if ( parser.exists( "showblockinstrs" ) )
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{
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const auto block_img_addr = parser.get< std::string >( "showblockinstrs" );
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_xeroxz
4 years ago