private IntPtr CreateAsmFunction(string[] function)
{
var result = _assembler.Assemble(function);
var address = _memory.Allocate(result.Length);
_memory.WriteRaw(address, result);
return(address);
}
/* Building functions to hook. */
private void BuildAdd()
{
string[] addFunction = new string[]
{
$"{_use32}",
$"push {_ebp}",
$"mov {_ebp}, {_esp}",
$"mov {_eax}, {_edx}", // Right Parameter
$"add {_eax}, {_ecx}", // Left Parameter
$"pop {_ebp}",
$"ret"
};
var result = _assembler.Assemble(addFunction);
Add = _memory.Allocate(result.Length);
_memory.WriteRaw(Add, result);
}
private void BuildAdd()
{
string[] addFunction = new string[]
{
$"use64",
$"lea eax, [rcx+rdx]",
$"ret",
};
var result = _assembler.Assemble(addFunction);
Add = _memory.Allocate(result.Length);
_memory.WriteRaw(Add, result);
}
private void BuildAdd()
{
string[] addFunction = new string[]
{
$"use32",
$"mov eax, [esp+8]", // Right Parameter
$"add eax, [esp+4]", // Left Parameter
$"ret 8",
};
var result = _assembler.Assemble(addFunction);
Add = _memory.Allocate(result.Length);
_memory.WriteRaw(Add, result);
}
private void BuildNativeFunction()
{
int wordSize = IntPtr.Size;
string[] addFunction = new string[]
{
$"{_use32}",
$"push {_ebp}",
$"mov {_ebp}, {_esp}",
$"mov {_eax}, [{_ebp} + {wordSize * 2}]", // Left Parameter
$"mov {_ecx}, [{_ebp} + {wordSize * 3}]", // Right Parameter
$"add {_eax}, {_ecx}",
$"pop {_ebp}",
$"ret"
};
var result = _assembler.Assemble(addFunction);
var func = _memory.Allocate(result.Length);
_memory.WriteRaw(func, result);
_nativeFunctions.Add(func);
}
