/// <param name="rip">The instruction pointer to start disassembly on</param>
/// <param name="pid">The PID to the process to get memory from</param>
/// <param name="disasmBox">The listbox to dump disasm to</param>
/// <param name="methodIntPtr">The trueIntPtr of the Method that we want to attack so that our jmp,call,etc are at the correct offsets.</param>
public void disassembler(byte[] bytesToDisassam, System.Windows.Forms.RichTextBox disasmBox, IntPtr methodIntPtr)
{
try
{
var disasm = new Disasm();
IntPtr disasmPtr = Marshal.AllocHGlobal(Marshal.SizeOf(disasm));
int result = 0;
if (IntPtr.Size == 8)
{
disasm.Archi = 64;
}
else
disasm.Archi = 32;
disasm.Options = 0x200; //display in NASM syntax
int size = bytesToDisassam.Length;
//IntPtr executionPointer = System.Runtime.InteropServices.Marshal.AllocHGlobal(size);
// System.Runtime.InteropServices.Marshal.Copy(bytesToDisassam, 0, executionPointer, size);
disasm.EIP = methodIntPtr;
var EIPrange = (methodIntPtr.ToInt64() + size / 2);
while (true)
{
System.Runtime.InteropServices.Marshal.StructureToPtr(disasm, disasmPtr, false);
if (IntPtr.Size == 8)
{
result = BeaEngine.Disasm64(disasmPtr);
Marshal.PtrToStructure(disasmPtr, disasm);
}
else
result = BeaEngine.Disasm(disasm);
//Marshal.PtrToStructure(disasmPtr, disasm);
if (result == (int)BeaConstants.SpecialInfo.UNKNOWN_OPCODE)
{
disasmBox.AppendText("Beaengine error: unknown opcode \n");
break;
}
disasmBox.AppendText("0x" + disasm.Instruction.Opcode.ToString("X") + " " + disasm.CompleteInstr.ToString() + "\n");
if (disasm.Instruction.Opcode.ToString("X") == "C3")
break;
disasm.EIP = new IntPtr(disasm.EIP.ToInt64() + result);
}
}
catch (Exception ex)
{
disasmBox.AppendText("Beaengine error: " + ex.Message.ToString() + "\n");
}
}
public static extern int Disasm([In, Out, MarshalAs(UnmanagedType.LPStruct)] Disasm disasm);
/// <param name="rip">The instruction pointer to start disassembly on</param>
/// <param name="pid">The PID to the process to get memory from</param>
/// <param name="disasmBox">The listbox to dump disasm to</param>
/// <param name="methodIntPtr">The trueIntPtr of the Method that we want to attack so that our jmp,call,etc are at the correct offsets.</param>
public void disassembler(byte[] bytesToDisassam, System.Windows.Forms.RichTextBox disasmBox, IntPtr methodIntPtr)
{
try
{
var disasm = new Disasm();
IntPtr disasmPtr = Marshal.AllocHGlobal(Marshal.SizeOf(disasm));
int result = 0;
if (IntPtr.Size == 8)
{
disasm.Archi = 64;
}
else
{
disasm.Archi = 32;
}
disasm.Options = 0x200; //display in NASM syntax
int size = bytesToDisassam.Length;
//IntPtr executionPointer = System.Runtime.InteropServices.Marshal.AllocHGlobal(size);
// System.Runtime.InteropServices.Marshal.Copy(bytesToDisassam, 0, executionPointer, size);
disasm.EIP = methodIntPtr;
var EIPrange = (methodIntPtr.ToInt64() + size / 2);
while (true)
{
System.Runtime.InteropServices.Marshal.StructureToPtr(disasm, disasmPtr, false);
if (IntPtr.Size == 8)
{
result = BeaEngine.Disasm64(disasmPtr);
Marshal.PtrToStructure(disasmPtr, disasm);
}
else
{
result = BeaEngine.Disasm(disasm);
}
//Marshal.PtrToStructure(disasmPtr, disasm);
if (result == (int)BeaConstants.SpecialInfo.UNKNOWN_OPCODE)
{
disasmBox.AppendText("Beaengine error: unknown opcode \n");
break;
}
disasmBox.AppendText("0x" + disasm.Instruction.Opcode.ToString("X") + " " + disasm.CompleteInstr.ToString() + "\n");
if (disasm.Instruction.Opcode.ToString("X") == "C3")
{
break;
}
disasm.EIP = new IntPtr(disasm.EIP.ToInt64() + result);
}
}
catch (Exception ex)
{
disasmBox.AppendText("Beaengine error: " + ex.Message.ToString() + "\n");
}
}
