/** * @file d-u.cpp * @author Sina Karvandi (sina@hyperdbg.org) * @brief !u* u* , !d* d* commands * @details * @version 0.1 * @date 2020-05-27 * * @copyright This project is released under the GNU Public License v3. * */ #include "pch.h" // // Global Variables // extern BOOLEAN g_IsSerialConnectedToRemoteDebuggee; extern ACTIVE_DEBUGGING_PROCESS g_ActiveProcessDebuggingState; /** * @brief help of u* d* !u* !d* commands * * @return VOID */ VOID CommandReadMemoryAndDisassemblerHelp() { ShowMessages("db dc dd dq !db !dc !dd !dq & u !u u2 !u2 : reads the " "memory different shapes (hex) and disassembler\n"); ShowMessages("db Byte and ASCII characters\n"); ShowMessages("dc Double-word values (4 bytes) and ASCII characters\n"); ShowMessages("dd Double-word values (4 bytes)\n"); ShowMessages("dq Quad-word values (8 bytes). \n"); ShowMessages("u Disassembler at the target address (x64) \n"); ShowMessages("u2 Disassembler at the target address (x86) \n"); ShowMessages("\nIf you want to read physical memory then add '!' at the " "start of the command\n"); ShowMessages("you can also disassemble physical memory using '!u'\n\n"); ShowMessages("syntax : \tdb [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("syntax : \tdc [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("syntax : \tdd [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("syntax : \tdq [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("syntax : \tu [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("syntax : \tu2 [Address (hex)] [l Length (hex)] [pid ProcessId (hex)]\n"); ShowMessages("\n"); ShowMessages("\t\te.g : db nt!Kd_DEFAULT_Mask\n"); ShowMessages("\t\te.g : db nt!Kd_DEFAULT_Mask+10\n"); ShowMessages("\t\te.g : db @rax\n"); ShowMessages("\t\te.g : db @rax+50\n"); ShowMessages("\t\te.g : db fffff8077356f010\n"); ShowMessages("\t\te.g : !dq 100000\n"); ShowMessages("\t\te.g : !dq @rax+77\n"); ShowMessages("\t\te.g : u nt!ExAllocatePoolWithTag\n"); ShowMessages("\t\te.g : u nt!ExAllocatePoolWithTag+30\n"); ShowMessages("\t\te.g : u fffff8077356f010\n"); ShowMessages("\t\te.g : u fffff8077356f010+@rcx\n"); } /** * @brief u* d* !u* !d* commands handler * * @param SplittedCommand * @param Command * @return VOID */ VOID CommandReadMemoryAndDisassembler(vector SplittedCommand, string Command) { UINT32 Pid = 0; UINT32 Length = 0; UINT64 TargetAddress = 0; BOOLEAN IsNextProcessId = FALSE; BOOLEAN IsFirstCommand = TRUE; BOOLEAN IsNextLength = FALSE; vector SplittedCommandCaseSensitive {Split(Command, ' ')}; UINT32 IndexInCommandCaseSensitive = 0; string FirstCommand = SplittedCommand.front(); // // By default if the user-debugger is active, we use these commands // on the memory layout of the debuggee process // if (g_ActiveProcessDebuggingState.IsActive) { Pid = g_ActiveProcessDebuggingState.ProcessId; } if (SplittedCommand.size() == 1) { // // Means that user entered just a connect so we have to // ask to connect to what ? // ShowMessages("incorrect use of '%s' command\n\n", FirstCommand.c_str()); CommandReadMemoryAndDisassemblerHelp(); return; } for (auto Section : SplittedCommand) { IndexInCommandCaseSensitive++; if (IsFirstCommand) { IsFirstCommand = FALSE; continue; } if (IsNextProcessId == TRUE) { if (!ConvertStringToUInt32(Section, &Pid)) { ShowMessages("err, you should enter a valid process id\n\n"); return; } IsNextProcessId = FALSE; continue; } if (IsNextLength == TRUE) { if (!ConvertStringToUInt32(Section, &Length)) { ShowMessages("err, you should enter a valid length\n\n"); return; } IsNextLength = FALSE; continue; } if (!Section.compare("l")) { IsNextLength = TRUE; continue; } if (!Section.compare("pid")) { IsNextProcessId = TRUE; continue; } // // Probably it's address // if (TargetAddress == 0) { if (!SymbolConvertNameOrExprToAddress(SplittedCommandCaseSensitive.at(IndexInCommandCaseSensitive - 1), &TargetAddress)) { // // Couldn't resolve or unkonwn parameter // ShowMessages("err, couldn't resolve error at '%s'\n", SplittedCommandCaseSensitive.at(IndexInCommandCaseSensitive - 1).c_str()); return; } } else { // // User inserts two address // ShowMessages("err, incorrect use of '%s' command\n\n", FirstCommand.c_str()); CommandReadMemoryAndDisassemblerHelp(); return; } } if (!TargetAddress) { // // User inserts two address // ShowMessages("err, please enter a valid address\n\n"); return; } if (Length == 0) { // // Default length (user doesn't specified) // if (!FirstCommand.compare("u") || !FirstCommand.compare("!u")) { Length = 0x40; } else { Length = 0x80; } } if (IsNextLength || IsNextProcessId) { ShowMessages("incorrect use of '%s' command\n\n", FirstCommand.c_str()); CommandReadMemoryAndDisassemblerHelp(); return; } // // Check to prevent using process id in d* and u* commands // if (g_IsSerialConnectedToRemoteDebuggee && Pid != 0) { ShowMessages("err, you cannot specify 'pid' in the debugger mode\n"); return; } if (Pid == 0) { // // Default process we read from current process // Pid = GetCurrentProcessId(); } if (!FirstCommand.compare("db")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DB, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("dc")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DC, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("dd")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DD, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("dq")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DQ, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!db")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DB, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!dc")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DC, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!dd")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DD, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!dq")) { HyperDbgReadMemoryAndDisassemble(DEBUGGER_SHOW_COMMAND_DQ, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } // // Disassembler (!u or u or u2 !u2) // else if (!FirstCommand.compare("u")) { HyperDbgReadMemoryAndDisassemble( DEBUGGER_SHOW_COMMAND_DISASSEMBLE64, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!u")) { HyperDbgReadMemoryAndDisassemble( DEBUGGER_SHOW_COMMAND_DISASSEMBLE64, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("u2")) { HyperDbgReadMemoryAndDisassemble( DEBUGGER_SHOW_COMMAND_DISASSEMBLE32, TargetAddress, DEBUGGER_READ_VIRTUAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } else if (!FirstCommand.compare("!u2")) { HyperDbgReadMemoryAndDisassemble( DEBUGGER_SHOW_COMMAND_DISASSEMBLE32, TargetAddress, DEBUGGER_READ_PHYSICAL_ADDRESS, READ_FROM_KERNEL, Pid, Length, NULL); } }