added support for virtual jcc's as well as virtual loops See merge request vmp2/vmprofiler-qt!1merge-requests/2/merge
_xeroxz
4 years ago
commit
bb0129fbfb
@ -1 +1 @@
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Subproject commit e58c23c40e13528f5d9b84feb7e23b62a886ed5a
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Subproject commit e95ef2537184639e89a4dbbd38355a11ffc46bac
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@ -1,300 +0,0 @@
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#include "QVMProfiler.h"
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QVMProfiler::QVMProfiler( QWidget *parent ) : QMainWindow( parent ), TraceFileBlob( nullptr ), VMCtx( nullptr )
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{
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ui.setupUi( this );
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}
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void QVMProfiler::on_actionCloseProgram_triggered()
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{
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exit( 0 );
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}
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void QVMProfiler::on_actionOpen_VMTrace_triggered()
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{
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if ( TraceFileBlob && VMCtx )
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{
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free( TraceFileBlob );
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TraceFileBlob = nullptr;
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TraceFileHeader = nullptr;
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TraceEntryList = nullptr;
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VMHandlerTable = nullptr;
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ImageBase = NULL;
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VMEntryRva = NULL;
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ModuleBase = NULL;
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VMHandlers.clear();
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VMEntry.clear();
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delete VMCtx;
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}
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TraceFilePath = QFileDialog::getOpenFileName( this, tr( "Open Trace" ), "C:\\", tr( "VMTrace Files (*.vmp2)" ) );
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if ( TraceFilePath.isEmpty() )
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{
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DbgMessage( "Invalid Trace File... No File Selected..." );
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return;
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}
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if ( !std::filesystem::exists( TraceFilePath.toStdString().c_str() ) )
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{
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DbgMessage( "Trace File Doesnt Exist..." );
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return;
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}
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const auto TraceFileSize = std::filesystem::file_size( TraceFilePath.toStdString().c_str() );
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if ( !TraceFileSize )
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{
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DbgMessage( "Invalid Trace File Size..." );
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return;
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}
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QFile File( TraceFilePath );
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TraceFileBlob = malloc( TraceFileSize );
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DbgMessage( QString( "Loading Trace File %1..." ).arg( TraceFilePath ) );
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if(!File.open( QIODevice::ReadOnly ))
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{
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DbgMessage( "Failed To Open Trace File..." );
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return;
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}
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memcpy( TraceFileBlob, File.readAll().data(), TraceFileSize );
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if ( !InitTraceData() )
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{
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DbgMessage( "Failed To Init Trace Data..." );
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return;
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}
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UpdateUI();
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}
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void QVMProfiler::DbgPrint( QString DbgOutput )
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{
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ui.DbgOutputWindow->appendPlainText( DbgOutput );
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}
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void QVMProfiler::DbgMessage( QString DbgOutput )
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{
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QMessageBox MsgBox;
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MsgBox.setText( DbgOutput );
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MsgBox.exec();
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DbgPrint( DbgOutput );
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}
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bool QVMProfiler::InitTraceData()
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{
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TraceFileHeader = reinterpret_cast< vmp2::v2::file_header * >( TraceFileBlob );
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TraceEntryList = reinterpret_cast< vmp2::v2::entry_t * >( reinterpret_cast< std::uintptr_t >( TraceFileBlob ) +
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TraceFileHeader->entry_offset );
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const auto TraceMagicBytes = &TraceFileHeader->magic;
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if ( memcmp( TraceMagicBytes, "VMP2", sizeof "VMP2" - 1 ) != 0 )
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{
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DbgMessage( "Trace File Magic Bytes Are Invalid...\n" );
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return false;
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}
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VMEntryRva = TraceFileHeader->vm_entry_rva;
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ImageBase = TraceFileHeader->image_base;
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ModuleBase = reinterpret_cast< std::uintptr_t >( TraceFileHeader ) + TraceFileHeader->module_offset;
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DbgPrint( "Trace File Magic Bytes Are Valid...." );
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if ( !vm::util::flatten( VMEntry, VMEntryRva + ModuleBase ) )
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{
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DbgMessage( "Failed To Flatten VMEntry...\n" );
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return false;
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}
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vm::util::deobfuscate( VMEntry );
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DbgPrint( "Flattened VMEntry..." );
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DbgPrint( "Deobfuscated VMEntry..." );
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char buffer[ 256 ];
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ZydisFormatter formatter;
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ZydisFormatterInit( &formatter, ZYDIS_FORMATTER_STYLE_INTEL );
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for ( auto &Instr : VMEntry )
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{
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ZydisFormatterFormatInstruction( &formatter, &Instr.instr, buffer, sizeof( buffer ),
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( Instr.addr - TraceFileHeader->module_base ) + ImageBase );
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DbgPrint( QString( "> %1 %2" )
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.arg( QString::number( ( Instr.addr - TraceFileHeader->module_base ) + ImageBase, 16 ) )
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.arg( buffer ) );
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}
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VMHandlerTable = vm::handler::table::get( VMEntry );
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if ( !vm::handler::get_all( ModuleBase, ImageBase, VMEntry, VMHandlerTable, VMHandlers ) )
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{
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DbgMessage( "Failed To Get All VM Handler Meta Data...\n" );
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return false;
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}
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DbgPrint( "Located All VM Handlers..." );
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VMCtx = new vm::vmctx_t( TraceFileHeader, TraceEntryList, VMHandlers, ModuleBase, ImageBase );
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return true;
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}
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void QVMProfiler::UpdateUI()
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{
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ui.VirtualInstructionTree->clear();
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for ( auto [ VirtInstr, TraceEntry ] = VMCtx->step(); TraceEntry && !VirtInstr.empty();
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std::tie( VirtInstr, TraceEntry ) = VMCtx->step() )
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{
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auto InstructionTraceData = new QTreeWidgetItem();
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InstructionTraceData->setText(
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0, QString::number( ( TraceEntry->vip - TraceFileHeader->module_base ) + ImageBase, 16 ) );
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if ( VMHandlers[ TraceEntry->handler_idx ].imm_size )
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{
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QString SecondOperandBytes;
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auto numByteOperand = VMHandlers[ TraceEntry->handler_idx ].imm_size / 8;
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auto spaceIdx = VirtInstr.find( " " ) + 1;
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auto ImmValue =
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QString( VirtInstr.substr( spaceIdx, VirtInstr.size() - spaceIdx ).c_str() ).toULongLong( nullptr, 16 );
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for ( auto idx = 0u; idx < numByteOperand; ++idx )
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{
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SecondOperandBytes.append(
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QString::number( *( reinterpret_cast< std::uint8_t * >( &ImmValue ) + idx ), 16 ) );
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SecondOperandBytes.append( " " );
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}
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InstructionTraceData->setText(
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1, QString::number( TraceEntry->handler_idx, 16 ).append( " - " ).append( SecondOperandBytes ) );
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}
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else
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{
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// else we just put the first operand byte (vm handler index)...
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InstructionTraceData->setText( 1, QString::number( TraceEntry->handler_idx, 16 ) );
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}
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InstructionTraceData->setText( 2, VirtInstr.c_str() );
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ui.VirtualInstructionTree->addTopLevelItem( InstructionTraceData );
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}
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ui.VirtualInstructionTree->topLevelItem( 0 )->setSelected( true );
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}
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void QVMProfiler::on_VirtualInstructionTree_itemSelectionChanged()
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{
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auto SelectedItem = ui.VirtualInstructionTree->selectedItems()[ 0 ];
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auto VIPAddr = SelectedItem->data( 0, 0 ).toString().toULongLong( nullptr, 16 );
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vmp2::v2::entry_t *Entry = nullptr;
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for ( auto idx = 0u; idx < TraceFileHeader->entry_count; ++idx )
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{
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if ( ( TraceEntryList[ idx ].vip - TraceFileHeader->module_base ) + ImageBase == VIPAddr )
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{
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Entry = &TraceEntryList[ idx ];
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break;
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}
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}
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ui.VirtualRegisterTree->topLevelItem( 0 )->setText(
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1, QString::number( ( Entry->vip - TraceFileHeader->module_base ) + ImageBase, 16 ) );
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ui.VirtualRegisterTree->topLevelItem( 1 )->setText( 1, QString::number( Entry->regs.rbp, 16 ) );
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ui.VirtualRegisterTree->topLevelItem( 2 )->setText( 1, QString::number( Entry->decrypt_key, 16 ) );
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for ( auto idx = 4; idx < 28; ++idx )
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ui.VirtualRegisterTree->topLevelItem( idx )->setText( 1, QString::number( Entry->vregs.qword[ idx - 4 ], 16 ) );
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for ( auto idx = 0u; idx < 15; ++idx )
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ui.NativeRegisterTree->topLevelItem( idx )->setText( 1, QString::number( Entry->regs.raw[ idx ], 16 ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->setText( 1, QString::number( Entry->regs.rflags, 16 ) );
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rflags flags;
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flags.flags = Entry->regs.rflags;
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 0 )->setText( 1, QString::number( flags.zero_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 1 )->setText( 1, QString::number( flags.parity_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 2 )->setText( 1, QString::number( flags.auxiliary_carry_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 3 )->setText( 1, QString::number( flags.overflow_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 4 )->setText( 1, QString::number( flags.sign_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 5 )->setText( 1, QString::number( flags.direction_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 6 )->setText( 1, QString::number( flags.carry_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 7 )->setText( 1, QString::number( flags.trap_flag ) );
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ui.NativeRegisterTree->topLevelItem( 16 )->child( 8 )->setText( 1, QString::number( flags.interrupt_enable_flag ) );
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ui.VirtualStackTree->clear();
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for ( auto idx = 0u; idx < sizeof( Entry->vsp ) / 8; ++idx )
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{
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auto newEntry = new QTreeWidgetItem();
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newEntry->setText( 0, QString::number( Entry->regs.rbp - ( idx * 8 ), 16 ) );
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newEntry->setText( 1, QString::number( Entry->vsp.qword[ idx ], 16 ) );
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ui.VirtualStackTree->addTopLevelItem( newEntry );
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}
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ui.VMHandlerInstructionsTree->clear();
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auto InstrVec = &VMHandlers[ Entry->handler_idx ].instrs;
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char buffer[ 256 ];
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ZydisFormatter formatter;
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ZydisFormatterInit( &formatter, ZYDIS_FORMATTER_STYLE_INTEL );
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for ( auto idx = 0u; idx < InstrVec->size(); ++idx )
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{
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auto newEntry = new QTreeWidgetItem();
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newEntry->setText( 0, QString::number( ( InstrVec->at( idx ).addr - ModuleBase ) + ImageBase, 16 ) );
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ZydisFormatterFormatInstruction( &formatter, &InstrVec->at( idx ).instr, buffer, sizeof( buffer ),
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( InstrVec->at( idx ).addr - ModuleBase ) + ImageBase );
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newEntry->setText( 1, buffer );
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ui.VMHandlerInstructionsTree->addTopLevelItem( newEntry );
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}
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ui.VMHandlerTransformationsTree->clear();
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auto HandlerTransforms = &VMHandlers[ Entry->handler_idx ].transforms;
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for ( auto [ TransformType, TransformInstr ] : *HandlerTransforms )
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{
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if ( TransformType == vm::transform::type::generic0 && TransformInstr.mnemonic == ZYDIS_MNEMONIC_INVALID )
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continue;
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auto newEntry = new QTreeWidgetItem();
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switch ( TransformType )
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{
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case vm::transform::type::rolling_key:
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{
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newEntry->setText( 0, "Key Transform" );
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break;
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}
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case vm::transform::type::generic0:
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case vm::transform::type::generic1:
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case vm::transform::type::generic2:
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case vm::transform::type::generic3:
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{
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newEntry->setText( 0, "Generic" );
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break;
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}
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case vm::transform::type::update_key:
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{
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newEntry->setText( 0, "Update Key" );
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break;
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}
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default:
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throw std::invalid_argument( "invalid transformation type..." );
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}
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ZydisFormatterFormatInstruction( &formatter, &TransformInstr, buffer, sizeof( buffer ), NULL );
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newEntry->setText( 1, buffer );
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ui.VMHandlerTransformationsTree->addTopLevelItem( newEntry );
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}
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}
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@ -1,48 +0,0 @@
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#pragma once
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#include <QtWidgets/QFileDialog>
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#include <QtWidgets/QInputDialog.h>
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#include <QtWidgets/QMainWindow>
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#include <QtWidgets/QMessageBox.h>
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#include <Windows.h>
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#include <filesystem>
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#include <fstream>
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#include <vmprofiler.hpp>
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#include "ia32.hpp"
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#include "ui_QVMProfiler.h"
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#include "vmctx.h"
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#include "vmp2.hpp"
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class QVMProfiler : public QMainWindow
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{
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Q_OBJECT
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public:
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QVMProfiler( QWidget *parent = Q_NULLPTR );
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private slots:
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void on_actionOpen_VMTrace_triggered();
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void on_actionCloseProgram_triggered();
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void on_VirtualInstructionTree_itemSelectionChanged();
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private:
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void DbgPrint( QString DbgOutput );
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void DbgMessage( QString DbgOutput );
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void UpdateUI();
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bool InitTraceData();
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Ui::QVMProfilerClass ui;
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QString TraceFilePath;
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QString VMProtectedFilePath;
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std::uint64_t ImageBase, VMEntryRva, ModuleBase;
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std::vector< vm::handler::handler_t > VMHandlers;
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zydis_routine_t VMEntry;
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std::uintptr_t *VMHandlerTable;
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vm::vmctx_t *VMCtx;
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void *TraceFileBlob;
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vmp2::v2::file_header *TraceFileHeader;
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vmp2::v2::entry_t *TraceEntryList;
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};
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@ -0,0 +1,146 @@
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#include "qvirt_instrs.h"
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qvirt_instrs_t::qvirt_instrs_t( qvminspector_t *vminspector ) : vminspector( vminspector ), ui( &vminspector->ui )
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{
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connect( ui->virt_instrs, &QTreeWidget::itemSelectionChanged, this, &qvirt_instrs_t::on_select );
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}
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void qvirt_instrs_t::on_select()
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{
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auto item = ui->virt_instrs->selectedItems()[ 0 ];
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const auto virt_instr = item->data( 3, Qt::UserRole ).value< vm::instrs::virt_instr_t * >();
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if ( !virt_instr )
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return;
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update_native_regs( virt_instr );
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update_virtual_regs( virt_instr );
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update_virtual_stack( virt_instr );
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update_vm_handler_info( virt_instr );
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}
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void qvirt_instrs_t::update_native_regs( vm::instrs::virt_instr_t *virt_instr )
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{
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const auto &trace_data = virt_instr->trace_data;
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// set native register values....
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for ( auto idx = 0u; idx < 15; ++idx )
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ui->native_regs->topLevelItem( idx )->setText( 1, QString::number( trace_data.regs.raw[ idx ], 16 ) );
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// set RFLAGs and its bits...
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ui->native_regs->topLevelItem( 16 )->setText( 1, QString::number( trace_data.regs.rflags, 16 ) );
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rflags flags;
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flags.flags = trace_data.regs.rflags;
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// could probably use a for loop here and shift bits around maybe...
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ui->native_regs->topLevelItem( 16 )->child( 0 )->setText( 1, QString::number( flags.zero_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 1 )->setText( 1, QString::number( flags.parity_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 2 )->setText( 1, QString::number( flags.auxiliary_carry_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 3 )->setText( 1, QString::number( flags.overflow_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 4 )->setText( 1, QString::number( flags.sign_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 5 )->setText( 1, QString::number( flags.direction_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 6 )->setText( 1, QString::number( flags.carry_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 7 )->setText( 1, QString::number( flags.trap_flag ) );
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ui->native_regs->topLevelItem( 16 )->child( 8 )->setText( 1, QString::number( flags.interrupt_enable_flag ) );
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}
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void qvirt_instrs_t::update_virtual_regs( vm::instrs::virt_instr_t *virt_instr )
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{
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const auto &trace_data = virt_instr->trace_data;
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// set VIP in virtual registers window...
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ui->virt_regs->topLevelItem( 0 )->setText(
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1,
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QString::number(
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( trace_data.vip - vminspector->file_header->module_base ) + vminspector->file_header->image_base, 16 ) );
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// set VSP in virtual registers window...
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ui->virt_regs->topLevelItem( 1 )->setText( 1, QString::number( trace_data.regs.rbp, 16 ) );
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// set decrypt key in virtual registers window...
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ui->virt_regs->topLevelItem( 2 )->setText( 1, QString::number( trace_data.regs.rdx, 16 ) );
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// set the virtual register values....
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for ( auto idx = 4u; idx < 28; ++idx )
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ui->virt_regs->topLevelItem( idx )->setText( 1, QString::number( trace_data.vregs.qword[ idx - 4 ], 16 ) );
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}
|
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|
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void qvirt_instrs_t::update_virtual_stack( vm::instrs::virt_instr_t *virt_instr )
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{
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ui->virt_stack->clear();
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const auto &trace_data = virt_instr->trace_data;
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|
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for ( auto idx = 0u; idx < sizeof( trace_data.vsp ) / 8; ++idx )
|
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{
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auto new_stack_entry = new qtree_widget_item_t();
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new_stack_entry->setText( 0, qstring_t::number( trace_data.regs.rbp + ( idx * 8 ), 16 ) );
|
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new_stack_entry->setText( 1, qstring_t::number( trace_data.vsp.qword[ idx ], 16 ) );
|
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ui->virt_stack->addTopLevelItem( new_stack_entry );
|
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}
|
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}
|
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|
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void qvirt_instrs_t::update_vm_handler_info( vm::instrs::virt_instr_t *virt_instr )
|
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{
|
||||
char buffer[ 256 ];
|
||||
ZydisFormatter formatter;
|
||||
ZydisFormatterInit( &formatter, ZYDIS_FORMATTER_STYLE_INTEL );
|
||||
|
||||
ui->vm_handler_instrs->clear();
|
||||
const auto &vm_handler_instrs = vminspector->vmctx->vm_handlers[ virt_instr->opcode ].instrs;
|
||||
|
||||
// display vm handler instructions...
|
||||
for ( const auto &instr : vm_handler_instrs )
|
||||
{
|
||||
auto new_instr = new qtree_widget_item_t();
|
||||
new_instr->setText(
|
||||
0, qstring_t::number( ( instr.addr - vminspector->module_base ) + vminspector->image_base, 16 ) );
|
||||
|
||||
ZydisFormatterFormatInstruction( &formatter, &instr.instr, buffer, sizeof( buffer ),
|
||||
( instr.addr - vminspector->module_base ) + vminspector->image_base );
|
||||
|
||||
new_instr->setText( 1, buffer );
|
||||
ui->vm_handler_instrs->addTopLevelItem( new_instr );
|
||||
}
|
||||
|
||||
// display vm handler transformations...
|
||||
ui->vm_handler_transforms->clear();
|
||||
const auto &vm_handler_transforms = vminspector->vmctx->vm_handlers[ virt_instr->opcode ].transforms;
|
||||
|
||||
for ( auto [ transform_type, transform_instr ] : vm_handler_transforms )
|
||||
{
|
||||
if ( transform_type == vm::transform::type::generic0 && transform_instr.mnemonic == ZYDIS_MNEMONIC_INVALID )
|
||||
continue;
|
||||
|
||||
auto new_transform_entry = new qtree_widget_item_t();
|
||||
|
||||
switch ( transform_type )
|
||||
{
|
||||
case vm::transform::type::rolling_key:
|
||||
{
|
||||
new_transform_entry->setText( 0, "Key Transform" );
|
||||
break;
|
||||
}
|
||||
case vm::transform::type::generic0:
|
||||
case vm::transform::type::generic1:
|
||||
case vm::transform::type::generic2:
|
||||
case vm::transform::type::generic3:
|
||||
{
|
||||
new_transform_entry->setText( 0, "Generic" );
|
||||
break;
|
||||
}
|
||||
case vm::transform::type::update_key:
|
||||
{
|
||||
new_transform_entry->setText( 0, "Update Key" );
|
||||
break;
|
||||
}
|
||||
default:
|
||||
throw std::invalid_argument( "invalid transformation type..." );
|
||||
}
|
||||
|
||||
ZydisFormatterFormatInstruction( &formatter, &transform_instr, buffer, sizeof( buffer ), NULL );
|
||||
|
||||
new_transform_entry->setText( 1, buffer );
|
||||
ui->vm_handler_transforms->addTopLevelItem( new_transform_entry );
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,20 @@
|
||||
#pragma once
|
||||
#include "qvminspector.h"
|
||||
|
||||
class qvirt_instrs_t : public QObject
|
||||
{
|
||||
Q_OBJECT
|
||||
public:
|
||||
explicit qvirt_instrs_t( qvminspector_t *vminspector );
|
||||
|
||||
private:
|
||||
Ui::QVMProfilerClass *ui;
|
||||
qvminspector_t *vminspector;
|
||||
void update_native_regs( vm::instrs::virt_instr_t *virt_instr );
|
||||
void update_virtual_regs( vm::instrs::virt_instr_t *virt_instr );
|
||||
void update_virtual_stack( vm::instrs::virt_instr_t *virt_instr );
|
||||
void update_vm_handler_info( vm::instrs::virt_instr_t *virt_instr );
|
||||
|
||||
private slots:
|
||||
void on_select();
|
||||
};
|
||||
@ -0,0 +1,368 @@
|
||||
#include "qvminspector.h"
|
||||
|
||||
qvminspector_t::qvminspector_t( qwidget_t *parent ) : qmain_window_t( parent ), file_header( nullptr ), vmctx( nullptr )
|
||||
{
|
||||
ui.setupUi( this );
|
||||
ui.virt_instrs->setColumnWidth( 0, 180 );
|
||||
ui.virt_instrs->setColumnWidth( 1, 150 );
|
||||
ui.virt_instrs->setColumnWidth( 2, 190 );
|
||||
ui.virt_instrs->setColumnWidth( 3, 200 );
|
||||
|
||||
connect( ui.action_open, &QAction::triggered, this, &qvminspector_t::on_open );
|
||||
connect( ui.action_close, &QAction::triggered, this, &qvminspector_t::on_close );
|
||||
}
|
||||
|
||||
void qvminspector_t::on_close()
|
||||
{
|
||||
exit( 0 );
|
||||
}
|
||||
|
||||
void qvminspector_t::on_open()
|
||||
{
|
||||
if ( file_header && vmctx )
|
||||
{
|
||||
free( file_header );
|
||||
delete vmctx;
|
||||
}
|
||||
|
||||
file_header = nullptr;
|
||||
image_base = 0u, vm_entry_rva = 0u, module_base = 0u;
|
||||
|
||||
file_path = QFileDialog::getOpenFileName(
|
||||
this, tr( "open vmp2 file" ), std::filesystem::current_path().string().c_str(), tr( "vmp2 file (*.vmp2)" ) );
|
||||
|
||||
const auto &_file_path = file_path.toStdString();
|
||||
|
||||
if ( file_path.isEmpty() )
|
||||
{
|
||||
dbg_msg( "invalid vmp2 file... no file selected..." );
|
||||
return;
|
||||
}
|
||||
|
||||
if ( !std::filesystem::exists( _file_path ) )
|
||||
{
|
||||
dbg_msg( "vmp2 file does not exist..." );
|
||||
return;
|
||||
}
|
||||
|
||||
const auto file_size = std::filesystem::file_size( _file_path );
|
||||
|
||||
if ( !file_size )
|
||||
{
|
||||
dbg_msg( "invalid vmp2 file size..." );
|
||||
return;
|
||||
}
|
||||
|
||||
qfile_t open_file( file_path );
|
||||
file_header = reinterpret_cast< vmp2::v3::file_header * >( malloc( file_size ) );
|
||||
dbg_msg( qstring_t( "loading vmp2 file %1..." ).arg( file_path ) );
|
||||
|
||||
if ( !open_file.open( QIODevice::ReadOnly ) )
|
||||
{
|
||||
dbg_msg( "failed to open vmp2 file..." );
|
||||
return;
|
||||
}
|
||||
|
||||
memcpy( file_header, open_file.readAll().data(), file_size );
|
||||
|
||||
if ( !init_data() )
|
||||
{
|
||||
dbg_msg( "failed to init vmp2 file data..." );
|
||||
return;
|
||||
}
|
||||
|
||||
update_ui();
|
||||
}
|
||||
|
||||
void qvminspector_t::dbg_print( qstring_t dbg_output )
|
||||
{
|
||||
ui.dbg_output_window->appendPlainText( dbg_output );
|
||||
}
|
||||
|
||||
void qvminspector_t::dbg_msg( qstring_t dbg_output )
|
||||
{
|
||||
qmsg_box_t msg_box;
|
||||
msg_box.setText( dbg_output );
|
||||
msg_box.exec();
|
||||
dbg_print( dbg_output );
|
||||
}
|
||||
|
||||
bool qvminspector_t::init_data()
|
||||
{
|
||||
if ( file_header->magic != VMP_MAGIC )
|
||||
{
|
||||
dbg_msg( "invalid magic bytes for vmp2 file..." );
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
dbg_print( "valid magic bytes for vmp2 file..." );
|
||||
|
||||
if ( file_header->version != vmp2::version_t::v3 )
|
||||
{
|
||||
dbg_msg( "invalid vmp2 file version... "
|
||||
"this vminspector is compiled for version 3...\n" );
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
vm_entry_rva = file_header->vm_entry_rva;
|
||||
image_base = file_header->image_base;
|
||||
|
||||
module_base = reinterpret_cast< std::uintptr_t >( file_header ) + file_header->module_offset;
|
||||
vmctx = new vm::ctx_t( module_base, image_base, image_base, vm_entry_rva );
|
||||
|
||||
if ( !vmctx->init() )
|
||||
{
|
||||
dbg_msg( "failed to init vm::ctx_t... this can happen for many reasons..."
|
||||
"ensure that the vmp2 file is not corrupted...\n" );
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
first_block = reinterpret_cast< vmp2::v3::code_block_t * >( reinterpret_cast< std::uintptr_t >( file_header ) +
|
||||
file_header->code_block_offset );
|
||||
return true;
|
||||
}
|
||||
|
||||
void qvminspector_t::add_branch_children( qtree_widget_item_t *item, std::uintptr_t branch_addr )
|
||||
{
|
||||
if ( std::find( code_block_addrs.begin(), code_block_addrs.end(), branch_addr ) != code_block_addrs.end() )
|
||||
return;
|
||||
|
||||
code_block_addrs.push_back( branch_addr );
|
||||
|
||||
// for each code block find the one that starts with the desired branch...
|
||||
for ( auto [ code_block, code_block_num ] = std::tuple{ first_block, 0u };
|
||||
code_block_num < file_header->code_block_count;
|
||||
code_block = reinterpret_cast< vmp2::v3::code_block_t * >( reinterpret_cast< std::uintptr_t >( code_block ) +
|
||||
code_block->next_block_offset ),
|
||||
++code_block_num )
|
||||
{
|
||||
// skip if this code block begin address is not branch_addr...
|
||||
if ( code_block->vip_begin != branch_addr && code_block->vip_begin != branch_addr - 2 &&
|
||||
code_block->vip_begin != branch_addr - 1 )
|
||||
continue;
|
||||
|
||||
dbg_print( qstring_t( "> code block %1 (block_%2), number of vinstrs = %3..." )
|
||||
.arg( code_block_num )
|
||||
.arg( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base, 0, 16 )
|
||||
.arg( code_block->vinstr_count ) );
|
||||
|
||||
// for each virtual instruction inside of this code block...
|
||||
for ( auto idx = 0u; idx < code_block->vinstr_count; ++idx )
|
||||
{
|
||||
const auto virt_instr = &code_block->vinstr[ idx ];
|
||||
const auto profile = vm::handler::get_profile( virt_instr->mnemonic_t );
|
||||
auto virt_instr_entry = new qtree_widget_item_t;
|
||||
|
||||
// virtual instruction image base'ed rva... (column 1)...
|
||||
virt_instr_entry->setText(
|
||||
0, QString( "block_%1+%2" )
|
||||
.arg( ( branch_addr - file_header->module_base ) + file_header->image_base, 0, 16 )
|
||||
.arg( idx ? code_block->vip_begin > virt_instr->trace_data.vip
|
||||
? code_block->vip_begin - virt_instr->trace_data.vip
|
||||
: virt_instr->trace_data.vip - code_block->vip_begin
|
||||
: 0u,
|
||||
0, 16 ) );
|
||||
|
||||
// virtual instruction operand bytes... (column 2)...
|
||||
qstring_t operand_bytes;
|
||||
operand_bytes.append( QString( "%1" ).arg( virt_instr->opcode, 0, 16 ) );
|
||||
|
||||
// if virt instruction has an imm... grab its bytes...
|
||||
if ( virt_instr->operand.has_imm )
|
||||
{
|
||||
operand_bytes.append( " - " );
|
||||
for ( auto _idx = 0u; _idx < virt_instr->operand.imm.imm_size / 8; ++_idx )
|
||||
operand_bytes.append( QString( "%1 " ).arg(
|
||||
reinterpret_cast< std::uint8_t * >( &virt_instr->operand.imm.u )[ _idx ], 0, 16 ) );
|
||||
}
|
||||
|
||||
virt_instr_entry->setText( 1, operand_bytes );
|
||||
|
||||
// virtual instruction string, includes imm... (colume 3)...
|
||||
QString decoded_instr( QString( "%1" ).arg(
|
||||
profile ? profile->name : QString( "UNK(%1)" ).arg( virt_instr->opcode, 0, 16 ) ) );
|
||||
|
||||
if ( virt_instr->operand.has_imm ) // if there is a second operand (imm) put its value...
|
||||
decoded_instr.append( QString( " %1" ).arg( virt_instr->operand.imm.u, 0, 16 ) );
|
||||
|
||||
virt_instr_entry->setText( 2, decoded_instr );
|
||||
|
||||
// add comments to the virtual instruction... (colume 4)...
|
||||
if ( virt_instr->mnemonic_t == vm::handler::LREGQ || virt_instr->mnemonic_t == vm::handler::SREGQ )
|
||||
virt_instr_entry->setText( 3, QString( "; vreg%1" )
|
||||
.arg( virt_instr->operand.imm.u ? ( virt_instr->operand.imm.u / 8 ) -
|
||||
1 /* zero based vreg... */
|
||||
: 0u ) );
|
||||
|
||||
QVariant var;
|
||||
var.setValue( virt_instr );
|
||||
virt_instr_entry->setData( 3, Qt::UserRole, var );
|
||||
|
||||
if ( virt_instr->mnemonic_t == vm::handler::JMP && code_block->jcc.has_jcc )
|
||||
{
|
||||
virt_instr_entry->setText(
|
||||
3,
|
||||
QString( "; { %1, %2 }" )
|
||||
.arg( ( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base,
|
||||
0, 16 )
|
||||
.arg( ( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base,
|
||||
0, 16 ) );
|
||||
|
||||
auto branch_entry1 = new qtree_widget_item_t(), branch_entry2 = new qtree_widget_item_t();
|
||||
const auto block1_addr =
|
||||
( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base;
|
||||
|
||||
const auto block2_addr =
|
||||
( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base;
|
||||
|
||||
branch_entry1->setText( 0, QString( "%1" ).arg( block1_addr, 0, 16 ) );
|
||||
branch_entry1->setText( 3, QString( "; block_%1" ).arg( block1_addr, 0, 16 ) );
|
||||
|
||||
branch_entry2->setText( 0, QString( "%1" ).arg( block2_addr, 0, 16 ) );
|
||||
branch_entry2->setText( 3, QString( "; block_%1" ).arg( block2_addr, 0, 16 ) );
|
||||
|
||||
add_branch_children( branch_entry1, code_block->jcc.block_addr[ 0 ] );
|
||||
add_branch_children( branch_entry2, code_block->jcc.block_addr[ 1 ] );
|
||||
|
||||
virt_instr_entry->addChildren( { branch_entry1, branch_entry2 } );
|
||||
// if its a JMP with branches we want to insert the next code block
|
||||
// instructions into the child widget entries...
|
||||
item->addChild( virt_instr_entry );
|
||||
return;
|
||||
}
|
||||
else if ( virt_instr->mnemonic_t == vm::handler::JMP )
|
||||
{
|
||||
virt_instr_entry->setText( 3, QString( "; { %1 }" )
|
||||
.arg( ( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) +
|
||||
file_header->image_base,
|
||||
0, 16 ) );
|
||||
|
||||
// else if this jmp doesnt have two branches add the next code block to it...
|
||||
item->addChild( virt_instr_entry );
|
||||
add_branch_children( item, code_block->jcc.block_addr[ 0 ] );
|
||||
}
|
||||
item->addChild( virt_instr_entry );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void qvminspector_t::update_ui()
|
||||
{
|
||||
// for each code block insert their virtual instructions
|
||||
// into the virtual instruction tree... also put meta data about the code
|
||||
// block above the virtual instructions... if the code block has a JCC (with two branches)
|
||||
// then make a child repeating this for loop...
|
||||
|
||||
ui.virt_instrs->clear(); // clear old virtual instructions out since we are updating the UI...
|
||||
for ( auto [ code_block, code_block_num ] = std::tuple{ first_block, 0u };
|
||||
code_block_num < file_header->code_block_count;
|
||||
code_block = reinterpret_cast< vmp2::v3::code_block_t * >( reinterpret_cast< std::uintptr_t >( code_block ) +
|
||||
code_block->next_block_offset ),
|
||||
++code_block_num )
|
||||
{
|
||||
code_block_addrs.push_back( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base );
|
||||
dbg_print( qstring_t( "> code block %1 (block_%2), number of vinstrs = %3..." )
|
||||
.arg( code_block_num )
|
||||
.arg( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base, 0, 16 )
|
||||
.arg( code_block->vinstr_count ) );
|
||||
|
||||
// for each virtual instruction inside of this code block...
|
||||
for ( auto idx = 0u; idx < code_block->vinstr_count; ++idx )
|
||||
{
|
||||
const auto virt_instr = &code_block->vinstr[ idx ];
|
||||
const auto profile = vm::handler::get_profile( virt_instr->mnemonic_t );
|
||||
auto virt_instr_entry = new qtree_widget_item_t;
|
||||
|
||||
// virtual instruction image base'ed rva... (column 1)...
|
||||
virt_instr_entry->setText(
|
||||
0, QString( "block_%1+%2" )
|
||||
.arg( ( code_block->vip_begin - file_header->module_base ) + file_header->image_base, 0, 16 )
|
||||
.arg( idx ? code_block->vip_begin > virt_instr->trace_data.vip
|
||||
? code_block->vip_begin - virt_instr->trace_data.vip
|
||||
: virt_instr->trace_data.vip - code_block->vip_begin
|
||||
: 0u,
|
||||
0, 16 ) );
|
||||
|
||||
// virtual instruction operand bytes... (column 2)...
|
||||
qstring_t operand_bytes;
|
||||
operand_bytes.append( QString( "%1" ).arg( virt_instr->opcode, 0, 16 ) );
|
||||
|
||||
// if virt instruction has an imm... grab its bytes...
|
||||
if ( virt_instr->operand.has_imm )
|
||||
{
|
||||
operand_bytes.append( " - " );
|
||||
for ( auto _idx = 0u; _idx < virt_instr->operand.imm.imm_size / 8; ++_idx )
|
||||
operand_bytes.append( QString( "%1 " ).arg(
|
||||
reinterpret_cast< std::uint8_t * >( &virt_instr->operand.imm.u )[ _idx ], 0, 16 ) );
|
||||
}
|
||||
|
||||
virt_instr_entry->setText( 1, operand_bytes );
|
||||
|
||||
// virtual instruction string, includes imm... (colume 3)...
|
||||
QString decoded_instr( QString( "%1" ).arg(
|
||||
profile ? profile->name : QString( "UNK(%1)" ).arg( virt_instr->opcode, 0, 16 ) ) );
|
||||
|
||||
if ( virt_instr->operand.has_imm ) // if there is a second operand (imm) put its value...
|
||||
decoded_instr.append( QString( " %1" ).arg( virt_instr->operand.imm.u, 0, 16 ) );
|
||||
|
||||
virt_instr_entry->setText( 2, decoded_instr );
|
||||
|
||||
// add comments to the virtual instruction... (colume 4)...
|
||||
if ( virt_instr->mnemonic_t == vm::handler::LREGQ || virt_instr->mnemonic_t == vm::handler::SREGQ )
|
||||
virt_instr_entry->setText(
|
||||
3,
|
||||
QString( "; vreg%1" ).arg( virt_instr->operand.imm.u ? ( virt_instr->operand.imm.u / 8 ) : 0u ) );
|
||||
|
||||
// add virt_instr_t pointer for this current virtual instruction...
|
||||
QVariant var;
|
||||
var.setValue( virt_instr );
|
||||
virt_instr_entry->setData( 3, Qt::UserRole, var );
|
||||
|
||||
if ( virt_instr->mnemonic_t == vm::handler::JMP && code_block->jcc.has_jcc )
|
||||
{
|
||||
virt_instr_entry->setText(
|
||||
3,
|
||||
QString( "; { %1, %2 }" )
|
||||
.arg( ( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base,
|
||||
0, 16 )
|
||||
.arg( ( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base,
|
||||
0, 16 ) );
|
||||
|
||||
auto branch_entry1 = new qtree_widget_item_t(), branch_entry2 = new qtree_widget_item_t();
|
||||
const auto block1_addr =
|
||||
( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) + file_header->image_base;
|
||||
|
||||
const auto block2_addr =
|
||||
( code_block->jcc.block_addr[ 1 ] - file_header->module_base ) + file_header->image_base;
|
||||
|
||||
branch_entry1->setText( 0, QString( "%1" ).arg( block1_addr, 0, 16 ) );
|
||||
branch_entry1->setText( 3, QString( "; block_%1" ).arg( block1_addr, 0, 16 ) );
|
||||
|
||||
branch_entry2->setText( 0, QString( "%1" ).arg( block2_addr, 0, 16 ) );
|
||||
branch_entry2->setText( 3, QString( "; block_%1" ).arg( block2_addr, 0, 16 ) );
|
||||
|
||||
add_branch_children( branch_entry1, code_block->jcc.block_addr[ 0 ] );
|
||||
add_branch_children( branch_entry2, code_block->jcc.block_addr[ 1 ] );
|
||||
|
||||
virt_instr_entry->addChildren( { branch_entry1, branch_entry2 } );
|
||||
// if its a JMP with branches we want to insert the next code block
|
||||
// instructions into the child widget entries...
|
||||
ui.virt_instrs->addTopLevelItem( virt_instr_entry );
|
||||
goto finish; // bad code...
|
||||
}
|
||||
else if ( virt_instr->mnemonic_t == vm::handler::JMP )
|
||||
virt_instr_entry->setText( 3, QString( "; { %1 }" )
|
||||
.arg( ( code_block->jcc.block_addr[ 0 ] - file_header->module_base ) +
|
||||
file_header->image_base,
|
||||
0, 16 ) );
|
||||
|
||||
ui.virt_instrs->addTopLevelItem( virt_instr_entry );
|
||||
}
|
||||
}
|
||||
|
||||
finish: // bad code...
|
||||
ui.virt_instrs->topLevelItem( 0 )->setSelected( true );
|
||||
}
|
||||
@ -0,0 +1,51 @@
|
||||
#pragma once
|
||||
#include <QtWidgets/QFileDialog>
|
||||
#include <QtWidgets/QInputDialog.h>
|
||||
#include <QtWidgets/QMainWindow>
|
||||
#include <QtWidgets/QMessageBox.h>
|
||||
#include <Windows.h>
|
||||
#include <filesystem>
|
||||
#include <fstream>
|
||||
#include <vmprofiler.hpp>
|
||||
|
||||
#include "ia32.hpp"
|
||||
#include "ui_qvminspector.h"
|
||||
#include "vmp2.hpp"
|
||||
|
||||
Q_DECLARE_METATYPE( vm::instrs::virt_instr_t * )
|
||||
|
||||
using qmain_window_t = QMainWindow;
|
||||
using qwidget_t = QWidget;
|
||||
using qstring_t = QString;
|
||||
using qfile_t = QFile;
|
||||
using qtree_widget_item_t = QTreeWidgetItem;
|
||||
using qmsg_box_t = QMessageBox;
|
||||
|
||||
class qvminspector_t : public qmain_window_t
|
||||
{
|
||||
friend class qvirt_instrs_t;
|
||||
Q_OBJECT
|
||||
public:
|
||||
qvminspector_t( qwidget_t *parent = Q_NULLPTR );
|
||||
|
||||
private slots:
|
||||
void on_open();
|
||||
void on_close();
|
||||
|
||||
private:
|
||||
void dbg_print( qstring_t DbgOutput );
|
||||
void dbg_msg( qstring_t DbgOutput );
|
||||
void update_ui();
|
||||
void add_branch_children( qtree_widget_item_t *item, std::uintptr_t branch_addr );
|
||||
bool init_data();
|
||||
|
||||
Ui::QVMProfilerClass ui;
|
||||
qstring_t file_path;
|
||||
qstring_t VMProtectedFilePath;
|
||||
std::uint64_t image_base, vm_entry_rva, module_base;
|
||||
vm::ctx_t *vmctx;
|
||||
|
||||
vmp2::v3::file_header *file_header;
|
||||
vmp2::v3::code_block_t *first_block;
|
||||
std::vector< std::uintptr_t > code_block_addrs;
|
||||
};
|
||||
@ -1,87 +0,0 @@
|
||||
#include "vmctx.h"
|
||||
|
||||
namespace vm
|
||||
{
|
||||
vmctx_t::vmctx_t( vmp2::v2::file_header *file_header, vmp2::v2::entry_t *entry_list,
|
||||
std::vector< vm::handler::handler_t > &vm_handlers, std::uintptr_t module_base, std::uintptr_t image_base )
|
||||
: module_base( module_base ), image_base( image_base ), entry_list( entry_list ), file_header( file_header ),
|
||||
vm_handlers( vm_handlers ), idx( 0 )
|
||||
{}
|
||||
|
||||
std::pair< std::string, const vmp2::v2::entry_t * > vmctx_t::step() const
|
||||
{
|
||||
if ( idx >= file_header->entry_count )
|
||||
return {};
|
||||
|
||||
auto vm_handler = vm_handlers[ entry_list[ idx ].handler_idx ];
|
||||
|
||||
if ( vm_handler.imm_size )
|
||||
{
|
||||
const auto operand = get_imm( file_header->advancement, entry_list[ idx ].vip, vm_handler.imm_size / 8 );
|
||||
|
||||
auto [ decrypted_operand, rolling_key ] =
|
||||
vm::instrs::decrypt_operand( vm_handler.transforms, operand, entry_list[ idx ].decrypt_key );
|
||||
|
||||
if ( vm_handler.profile )
|
||||
{
|
||||
if ( vm_handler.profile->extention == vm::handler::extention_t::sign_extend )
|
||||
{
|
||||
switch ( vm_handler.imm_size )
|
||||
{
|
||||
case 8:
|
||||
if ( ( u8 )( decrypted_operand >> 7 ) )
|
||||
decrypted_operand += ~0xFFull;
|
||||
break;
|
||||
case 16:
|
||||
if ( ( u16 )( decrypted_operand >> 15 ) )
|
||||
decrypted_operand += ~0xFFFFull;
|
||||
break;
|
||||
case 32:
|
||||
if ( ( u32 )( decrypted_operand >> 31 ) )
|
||||
decrypted_operand += ~0xFFFFFFFFull;
|
||||
break;
|
||||
default:
|
||||
throw std::invalid_argument( "invalid imm size for sign extention...\n" );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
char buff[ 256 ];
|
||||
if ( vm_handler.profile )
|
||||
snprintf( buff, sizeof buff, "%s 0x%p", vm_handler.profile->name, decrypted_operand );
|
||||
else
|
||||
snprintf( buff, sizeof buff, "UNK(%d) 0x%p", entry_list[ idx ].handler_idx, decrypted_operand );
|
||||
|
||||
return { buff, &entry_list[ idx++ ] };
|
||||
}
|
||||
|
||||
if ( vm_handler.profile )
|
||||
return { vm_handler.profile->name, &entry_list[ idx++ ] };
|
||||
|
||||
char buff[ 256 ];
|
||||
snprintf( buff, sizeof buff, "UNK(%d)", entry_list[ idx ].handler_idx );
|
||||
return { buff, &entry_list[ idx++ ] };
|
||||
}
|
||||
|
||||
std::uintptr_t vmctx_t::get_imm( vmp2::exec_type_t exec_type_t, std::uint32_t vip_offset,
|
||||
std::uint8_t imm_size ) const
|
||||
{
|
||||
std::uintptr_t operand = 0u;
|
||||
if ( file_header->advancement == vmp2::exec_type_t::forward )
|
||||
{
|
||||
const auto operand_ptr =
|
||||
reinterpret_cast< void * >( ( entry_list[ idx ].vip - file_header->module_base ) + module_base );
|
||||
|
||||
memcpy( &operand, operand_ptr, imm_size );
|
||||
}
|
||||
else
|
||||
{
|
||||
const auto operand_ptr = reinterpret_cast< void * >(
|
||||
( ( entry_list[ idx ].vip - file_header->module_base ) + module_base ) - imm_size );
|
||||
|
||||
memcpy( &operand, operand_ptr, imm_size );
|
||||
}
|
||||
|
||||
return operand;
|
||||
}
|
||||
} // namespace vm
|
||||
@ -1,24 +0,0 @@
|
||||
#pragma once
|
||||
#include <vmprofiler.hpp>
|
||||
|
||||
namespace vm
|
||||
{
|
||||
class vmctx_t
|
||||
{
|
||||
public:
|
||||
explicit vmctx_t( vmp2::v2::file_header *file_header, vmp2::v2::entry_t *entry_list,
|
||||
std::vector< vm::handler::handler_t > &vm_handlers, std::uintptr_t module_base,
|
||||
std::uintptr_t image_base );
|
||||
|
||||
std::pair< std::string, const vmp2::v2::entry_t * > step() const;
|
||||
|
||||
private:
|
||||
std::uintptr_t get_imm( vmp2::exec_type_t exec_type_t, std::uint32_t vip_offset, std::uint8_t imm_size ) const;
|
||||
|
||||
mutable std::uint32_t idx;
|
||||
const std::uintptr_t image_base, module_base;
|
||||
const vmp2::v2::entry_t *entry_list;
|
||||
const vmp2::v2::file_header *file_header;
|
||||
std::vector< vm::handler::handler_t > vm_handlers;
|
||||
};
|
||||
} // namespace vm
|
||||
Loading…
Reference in new issue