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@ -3,7 +3,7 @@
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qvminspector_t::qvminspector_t( qwidget_t *parent ) : qmain_window_t( parent ), file_header( nullptr ), vmctx( nullptr )
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{
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ui.setupUi( this );
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ui.virt_instrs->setColumnWidth( 0, 115 );
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ui.virt_instrs->setColumnWidth( 0, 175 );
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ui.virt_instrs->setColumnWidth( 1, 140 );
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ui.virt_instrs->setColumnWidth( 2, 200 );
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ui.virt_instrs->setColumnWidth( 3, 200 );
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@ -125,6 +125,117 @@ bool qvminspector_t::init_data()
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return true;
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}
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void qvminspector_t::add_branch_children( qtree_widget_item_t *item, std::uintptr_t branch_addr )
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{
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if ( std::find( code_block_addrs.begin(), code_block_addrs.end(), branch_addr ) != code_block_addrs.end() )
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return;
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code_block_addrs.push_back( branch_addr );
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// for each code block find the one that starts with the desired branch...
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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 * >( reinterpret_cast< std::uintptr_t >( code_block ) +
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code_block->next_block_offset ),
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++code_block_num )
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{
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// skip if this code block begin address is not branch_addr...
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if ( code_block->vip_begin != branch_addr && code_block->vip_begin != branch_addr - 2 &&
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code_block->vip_begin != branch_addr - 1)
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continue;
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dbg_print( qstring_t( "> code block %1 (block_%2), number of vinstrs = %3..." )
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.arg( code_block_num )
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.arg( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base, 0, 16 )
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.arg( code_block->vinstr_count ) );
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// for each virtual instruction inside of this code block...
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for ( auto idx = 0u; idx < code_block->vinstr_count; ++idx )
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{
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const auto virt_instr = &code_block->vinstr[ idx ];
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const auto profile = vm::handler::get_profile( virt_instr->mnemonic_t );
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auto virt_instr_entry = new qtree_widget_item_t;
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// virtual instruction image base'ed rva... (column 1)...
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virt_instr_entry->setText( 0, qstring_t::number( ( virt_instr->trace_data.vip - file_header->module_base ) +
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file_header->image_base,
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16 ) );
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// virtual instruction operand bytes... (column 2)...
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qstring_t operand_bytes;
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operand_bytes.append( QString( "%1" ).arg( virt_instr->opcode, 0, 16 ) );
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// if virt instruction has an imm... grab its bytes...
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if ( virt_instr->operand.has_imm )
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{
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operand_bytes.append( " - " );
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for ( auto _idx = 0u; _idx < virt_instr->operand.imm.imm_size / 8; ++_idx )
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operand_bytes.append( QString( "%1 " ).arg(
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reinterpret_cast< std::uint8_t * >( &virt_instr->operand.imm.u )[ _idx ], 0, 16 ) );
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}
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virt_instr_entry->setText( 1, operand_bytes );
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// virtual instruction string, includes imm... (colume 3)...
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QString decoded_instr( QString( "%1" ).arg(
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profile ? profile->name : QString( "UNK(%1)" ).arg( virt_instr->opcode, 0, 16 ) ) );
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if ( virt_instr->operand.has_imm ) // if there is a second operand (imm) put its value...
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decoded_instr.append( QString( " %1" ).arg( virt_instr->operand.imm.u, 0, 16 ) );
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virt_instr_entry->setText( 2, decoded_instr );
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// add comments to the virtual instruction... (colume 4)...
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if ( virt_instr->mnemonic_t == vm::handler::LREGQ || virt_instr->mnemonic_t == vm::handler::SREGQ )
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virt_instr_entry->setText( 3, QString( "; vreg%1..." )
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.arg( virt_instr->operand.imm.u ? ( virt_instr->operand.imm.u / 8 ) -
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1 /* zero based vreg... */
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: 0u ) );
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if ( virt_instr->mnemonic_t == vm::handler::JMP && code_block->jcc.has_jcc )
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{
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virt_instr_entry->setText(
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3,
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QString( "; { %1, %2 }" )
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.arg( ( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base,
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0, 16 )
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.arg( ( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base,
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0, 16 ) );
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auto branch_entry1 = new qtree_widget_item_t(), branch_entry2 = new qtree_widget_item_t();
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const auto block1_addr =
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( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base;
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const auto block2_addr =
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( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base;
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branch_entry1->setText( 0, QString( "%1" ).arg( block1_addr, 0, 16 ) );
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branch_entry1->setText( 3, QString( "; block_%1" ).arg( block1_addr, 0, 16 ) );
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branch_entry2->setText( 0, QString( "%1" ).arg( block2_addr, 0, 16 ) );
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branch_entry2->setText( 3, QString( "; block_%1" ).arg( block2_addr, 0, 16 ) );
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add_branch_children( branch_entry1, code_block->jcc.block_addr[ 0 ] );
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add_branch_children( branch_entry2, code_block->jcc.block_addr[ 1 ] );
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virt_instr_entry->addChildren( { branch_entry1, branch_entry2 } );
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// if its a JMP with branches we want to insert the next code block
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// instructions into the child widget entries...
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item->addChild( virt_instr_entry );
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return;
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}
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else if ( virt_instr->mnemonic_t == vm::handler::JMP )
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{
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// else if this jmp doesnt have two branches add the next code block to it...
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item->addChild( virt_instr_entry );
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add_branch_children( item, code_block->jcc.block_addr[ 0 ] );
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}
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item->addChild( virt_instr_entry );
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}
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}
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}
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void qvminspector_t::update_ui()
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{
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// for each code block insert their virtual instructions
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@ -138,6 +249,7 @@ void qvminspector_t::update_ui()
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code_block->next_block_offset ),
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++code_block_num )
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{
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code_block_addrs.push_back( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base );
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dbg_print( qstring_t( "> code block %1 (block_%2), number of vinstrs = %3..." )
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.arg( code_block_num )
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.arg( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base, 0, 16 )
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@ -187,6 +299,7 @@ void qvminspector_t::update_ui()
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: 0u ) );
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if ( virt_instr->mnemonic_t == vm::handler::JMP && code_block->jcc.has_jcc )
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{
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virt_instr_entry->setText(
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3,
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QString( "; { %1, %2 }" )
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@ -195,6 +308,29 @@ void qvminspector_t::update_ui()
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.arg( ( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base,
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0, 16 ) );
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auto branch_entry1 = new qtree_widget_item_t(), branch_entry2 = new qtree_widget_item_t();
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const auto block1_addr =
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( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base;
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const auto block2_addr =
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( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base;
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branch_entry1->setText( 0, QString( "%1" ).arg( block1_addr, 0, 16 ) );
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branch_entry1->setText( 3, QString( "; block_%1" ).arg( block1_addr, 0, 16 ) );
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branch_entry2->setText( 0, QString( "%1" ).arg( block2_addr, 0, 16 ) );
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branch_entry2->setText( 3, QString( "; block_%1" ).arg( block2_addr, 0, 16 ) );
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add_branch_children( branch_entry1, code_block->jcc.block_addr[ 0 ] );
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add_branch_children( branch_entry2, code_block->jcc.block_addr[ 1 ] );
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virt_instr_entry->addChildren( { branch_entry1, branch_entry2 } );
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// if its a JMP with branches we want to insert the next code block
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// instructions into the child widget entries...
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ui.virt_instrs->addTopLevelItem( virt_instr_entry );
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return;
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}
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ui.virt_instrs->addTopLevelItem( virt_instr_entry );
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}
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}
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