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119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/**
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* @file detach.cpp
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* @author Sina Karvandi (sina@rayanfam.com)
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* @brief .detach command
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* @details
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* @version 0.1
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* @date 2020-08-28
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*
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* @copyright This project is released under the GNU Public License v3.
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*
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*/
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#include "pch.h"
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//
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// Global Variables
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//
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extern DEBUGGING_STATE g_DebuggingState;
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/**
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* @brief help of .detach command
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*
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* @return VOID
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*/
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VOID CommandDetachHelp() {
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ShowMessages(".detach : detach from debugging a user-mode process.\n\n");
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ShowMessages("syntax : \t.detach\n");
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}
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/**
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* @brief perform detach from process
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*
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* @return VOID
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*/
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VOID DetachFromProcess() {
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BOOLEAN Status;
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ULONG ReturnedLength;
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DEBUGGER_ATTACH_DETACH_USER_MODE_PROCESS DetachRequest = {0};
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ShowMessages("This command is not supported on this version.\n");
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return;
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//
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// Check if we attached to a process or not
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//
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if (!g_DebuggingState.IsAttachedToUsermodeProcess) {
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ShowMessages("you're not attached to any thread.\n");
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return;
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}
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//
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// Check if debugger is loaded or not
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//
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if (!g_DeviceHandle) {
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ShowMessages("Handle not found, probably the driver is not loaded. Did you "
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"use 'load' command?\n");
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return;
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}
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//
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// We wanna detach from a process
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//
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DetachRequest.IsAttach = FALSE;
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DetachRequest.ProcessId = g_DebuggingState.ConnectedProcessId;
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DetachRequest.ThreadId = g_DebuggingState.ConnectedThreadId;
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//
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// Send the request to the kernel
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//
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Status = DeviceIoControl(
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g_DeviceHandle, // Handle to device
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IOCTL_DEBUGGER_ATTACH_DETACH_USER_MODE_PROCESS, // IO Control
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// code
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&DetachRequest, // Input Buffer to driver.
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SIZEOF_DEBUGGER_ATTACH_DETACH_USER_MODE_PROCESS, // Input buffer length
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&DetachRequest, // Output Buffer from driver.
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SIZEOF_DEBUGGER_ATTACH_DETACH_USER_MODE_PROCESS, // Length of output
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// buffer in bytes.
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&ReturnedLength, // Bytes placed in buffer.
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NULL // synchronous call
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);
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if (!Status) {
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ShowMessages("ioctl failed with code 0x%x\n", GetLastError());
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return;
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}
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//
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// Check if attaching was successful then we can set the attached to true
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//
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if (DetachRequest.Result == DEBUGEER_OPERATION_WAS_SUCCESSFULL) {
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g_DebuggingState.IsAttachedToUsermodeProcess = FALSE;
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g_DebuggingState.ConnectedProcessId = NULL;
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g_DebuggingState.ConnectedThreadId = NULL;
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}
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}
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/**
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* @brief .detach command handler
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*
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* @param SplittedCommand
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* @param Command
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* @return VOID
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*/
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VOID CommandDetach(vector<string> SplittedCommand) {
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if (SplittedCommand.size() >= 2) {
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ShowMessages("incorrect use of '.detach'\n\n");
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CommandDetachHelp();
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return;
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}
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//
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// Perform detach from the process
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//
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DetachFromProcess();
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}
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