//CallAddressEx usage
//public void Function(Arg1, Arg2, Arg3);
//CallAddressEx(FunctionAddress, null, false, Arg1, Arg2, Arg3);
//assembly:
//push Arg3
//push Arg2
//push Arg1
//call Function
/// <summary>
/// Extended function call with optional context, arguments, and return value. Average execution time of 1.3ms without return or 1.75ms with return.
/// </summary>
/// <param name="address">Xbox procedure address.</param>
/// <param name="context">Cpu context. This parameter may be null.</param>
/// <param name="pushArgs">Arguments to be pushed before the call is made. These are optional of course.</param>
/// <returns></returns>
public uint CallAddressEx(uint address, CPUContext context, bool returnValue, params object[] pushArgs)
{
#region Build Call Script
// buffer to hold our call data
System.IO.MemoryStream callScript = new System.IO.MemoryStream();
BinaryWriter call = new BinaryWriter(callScript);
call.BaseStream.Position = 0;
// push arguments in reverse order
for (int i = pushArgs.Length - 1; i >= 0; i--)
{
call.Write((byte)0x68); //push
call.Write(Convert.ToUInt32(pushArgs[i]));
}
if (context != null)
{
// assign registers
if (context.Eax != null)
{
call.Write((byte)0xB8); //mov eax
call.Write(Convert.ToUInt32(context.Eax));
}
if (context.Ebx != null)
{
call.Write((byte)0xBB); //mov ebx
call.Write(Convert.ToUInt32(context.Ebx));
}
if (context.Ecx != null)
{
call.Write((byte)0xB9); //mov ecx
call.Write(Convert.ToUInt32(context.Ecx));
}
if (context.Edx != null)
{
call.Write((byte)0xBA); //mov edx
call.Write(Convert.ToUInt32(context.Edx));
}
if (context.Esi != null)
{
call.Write((byte)0xBE); //mov esi
call.Write(Convert.ToUInt32(context.Esi));
}
if (context.Edi != null)
{
call.Write((byte)0xBF); //mov edi
call.Write(Convert.ToUInt32(context.Edi));
}
if (context.Esp != null)
{
call.Write((byte)0xBC); //mov esp
call.Write(Convert.ToUInt32(context.Esp));
}
if (context.Ebp != null)
{
call.Write((byte)0xBD); //mov ebp
call.Write(Convert.ToUInt32(context.Ebp));
}
// assign xmm registers
// remember that its a pointer, not a value you are db'ing
// so we need to dump the values somewhere, then store the pointers to those...
uint XmmContextBuffer = 0x10004;
if (context.Xmm0 != null)
{
SetMemory(XmmContextBuffer, Convert.ToSingle(context.Xmm0));
call.Write(0x05100FF3); //movss xmm0
call.Write(XmmContextBuffer); //dword ptr ds:[addr]
}
if (context.Xmm1 != null)
{
SetMemory(XmmContextBuffer + 4, Convert.ToSingle(context.Xmm1));
call.Write(0x0D100FF3); //movss xmm1
call.Write(XmmContextBuffer + 4);
}
if (context.Xmm2 != null)
{
SetMemory(XmmContextBuffer + 8, Convert.ToSingle(context.Xmm2));
call.Write(0x15100FF3); //movss xmm2
call.Write(XmmContextBuffer + 8);
}
if (context.Xmm3 != null)
{
SetMemory(XmmContextBuffer + 12, Convert.ToSingle(context.Xmm3));
call.Write(0x1D100FF3); //movss xmm3
call.Write(XmmContextBuffer + 12);
}
if (context.Xmm4 != null)
{
SetMemory(XmmContextBuffer + 16, Convert.ToSingle(context.Xmm4));
call.Write(0x25100FF3); //movss xmm4
call.Write(XmmContextBuffer + 16);
}
if (context.Xmm5 != null)
{
SetMemory(XmmContextBuffer + 20, Convert.ToSingle(context.Xmm5));
call.Write(0x2D100FF3); //movss xmm5
call.Write(XmmContextBuffer + 20);
}
if (context.Xmm6 != null)
{
SetMemory(XmmContextBuffer + 24, Convert.ToSingle(context.Xmm6));
call.Write(0x35100FF3); //movss xmm6
call.Write(XmmContextBuffer + 24);
}
if (context.Xmm7 != null)
{
SetMemory(XmmContextBuffer + 28, Convert.ToSingle(context.Xmm7));
call.Write(0x3D100FF3); //movss xmm7
call.Write(XmmContextBuffer + 28);
}
}
// call address and store result
//call dword ptr ds:[CallAddress]
//mov dword ptr ds:[ReturnAddress], eax
//mov eax, 02DB0000h ;fake success
//retn 10h
call.Write((ushort)0x15FF);
call.Write((uint)(ScriptBufferAddress + call.BaseStream.Position + 17));
call.Write((byte)0xA3);
call.Write((uint)0x10000);
call.Write(0x00DB02B8);
call.Write(0x0010C200);
call.Write(address);
#endregion
// inject call script
if (callScript.Length > ScriptBufferSize) throw new Exception("Script too big. Try allocating more memory and specifying new script buffer information.");
SetMemory(ScriptBufferAddress, callScript.ToArray());
call.Close();
// execute script via hijacked crashdump function
FlushSocketBuffer();
SendCommand("crashdump");
// return the value of eax after the call
if (returnValue) return GetUInt32(0x10000);
else return 0;
}
//CallAddressEx usage
//public void Function(Arg1, Arg2, Arg3);
//CallAddressEx(FunctionAddress, null, false, Arg1, Arg2, Arg3);
//assembly:
//push Arg3
//push Arg2
//push Arg1
//call Function
/// <summary>
/// Extended function call with optional context, arguments, and return value. Average execution time of 1.3ms without return or 1.75ms with return.
/// </summary>
/// <param name="address">Xbox procedure address.</param>
/// <param name="context">Cpu context. This parameter may be null.</param>
/// <param name="pushArgs">Arguments to be pushed before the call is made. These are optional of course.</param>
/// <returns></returns>
public uint CallAddressEx(uint address, CPUContext context, bool returnValue, params object[] pushArgs)
{
// NOTE: Documented execution timing is probably different now that we don't use straight up objects in the CPUContext
// buffer to hold our call data
using (System.IO.MemoryStream callScript = new System.IO.MemoryStream())
using (BinaryWriter call = new BinaryWriter(callScript))
{
call.Write(LowLevel.Intel.x86.pushad);
// push arguments in reverse order
for (int i = pushArgs.Length - 1; i >= 0; i--)
{
call.Write(LowLevel.Intel.x86.push_prefix_dword);
call.Write(Util.ObjectToDwordBytes(pushArgs[i])); // hack: improper conversion of floating point values
}
if (context != null)
{
// assign registers
if (context.Eax.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_eax_prefix_dword);
call.Write(context.Eax.Value);
}
if (context.Ebx.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_ebx_prefix_dword);
call.Write(context.Ebx.Value);
}
if (context.Ecx.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_ecx_prefix_dword);
call.Write(context.Ecx.Value);
}
if (context.Edx.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_edx_prefix_dword);
call.Write(context.Edx.Value);
}
if (context.Esi.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_esi_prefix_dword);
call.Write(context.Esi.Value);
}
if (context.Edi.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_edi_prefix_dword);
call.Write(context.Edi.Value);
}
if (context.Esp.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_esp_prefix_dword);
call.Write(context.Esp.Value);
}
if (context.Ebp.HasValue)
{
call.Write(LowLevel.Intel.x86.mov_ebp_prefix_dword);
call.Write(context.Ebp.Value);
}
// assign xmm registers
// remember that its a pointer, not a value you are db'ing
// so we need to dump the values somewhere, then store the pointers to those...
if (context.Xmm0.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer, (float)context.Xmm0.Value); // shouldnt assume its floating point input but meh
call.Write(LowLevel.Intel.SSE.movss_xmm0_prefix_addr);
call.Write(kAddressOfXmmContextBuffer); //dword ptr ds:[addr]
}
if (context.Xmm1.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 4, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm1_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 4);
}
if (context.Xmm2.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 8, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm2_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 8);
}
if (context.Xmm3.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 12, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm3_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 12);
}
if (context.Xmm4.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 16, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm4_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 16);
}
if (context.Xmm5.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 20, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm5_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 20);
}
if (context.Xmm6.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 24, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm6_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 24);
}
if (context.Xmm7.HasValue)
{
SetMemory(kAddressOfXmmContextBuffer + 28, (float)context.Xmm0.Value);
call.Write(LowLevel.Intel.SSE.movss_xmm7_prefix_addr);
call.Write(kAddressOfXmmContextBuffer + 28);
}
}
// call address and store result
//pushad
//push Arg3
//push Arg2
//push Arg1
//call dword ptr ds:[CallAddress]
//mov dword ptr ds:[ReturnAddress], eax
//popad
//mov eax, 02DB0000h ;fake success
//retn 10h
call.Write(LowLevel.Intel.x86.call_prefix_absolute);
call.Write((uint)(XboxHistory.ScriptBufferAddress + call.BaseStream.Position + 18));
call.Write((byte)0xA3);
call.Write(kAddressOfReturnValue);
call.Write(LowLevel.Intel.x86.popad);
call.Write(0xDB0000B8);
call.Write(0x0010C202);
call.Write(address);
// inject call script
if (callScript.Length > XboxHistory.ScriptBufferSize) throw new Exception("Script too big. Try allocating more memory and specifying new script buffer information.");
SetMemory(XboxHistory.ScriptBufferAddress, callScript.ToArray());
}
// execute script via hijacked crashdump function
SendCommand("crashdump");
// return the value of eax after the call
if (returnValue) return GetUInt32(kAddressOfReturnValue);
else return 0;
}