public static uint InjectCode(AppProcess process, uint address, int replacedInstructionSize, byte[] newCode)
{
if (replacedInstructionSize < 5)
{
throw new Exception("Replaced instruction size much be greater than 5.");
}
//Allocate the memory required
uint allocatedMem = process.AllocateMemory((uint)(newCode.Length + replacedInstructionSize + JMPSize));
//Write the new code in the allocated memory
process.WriteBytes((int)allocatedMem, newCode);
//Copy the old code
CopyInstructions(process, address, allocatedMem + (uint)newCode.Length, replacedInstructionSize);
//Write jump at the end of the allocated memory
WriteJump(process, allocatedMem + (uint)newCode.Length + (uint)replacedInstructionSize, address + (uint)replacedInstructionSize);
//Write jump address
WriteJump(process, address, allocatedMem);
//Write nops to be clean
WriteNOPs(process, address + JMPSize, replacedInstructionSize - JMPSize);
return(allocatedMem);
}
public void Activate()
{
//Allocate the memory required
mAllocatedMemory = mProcess.AllocateMemory((uint)(mNewCode.Length + mReplacedInstructionSize + Hack.JMPSize));
if (mAllocatedMemory == 0)
{
throw new Exception();
}
//Write the new code in the allocated memory
mProcess.WriteBytes((int)mAllocatedMemory, mNewCode);
//Copy the old code
Hack.CopyInstructions(mProcess, mAddress, mAllocatedMemory + (uint)mNewCode.Length, mReplacedInstructionSize);
//Write jump at the end of the allocated memory
Hack.WriteJump(mProcess, mAllocatedMemory + (uint)mNewCode.Length + (uint)mReplacedInstructionSize, mAddress + (uint)mReplacedInstructionSize);
//Write jump address
Hack.WriteJump(mProcess, mAddress, mAllocatedMemory);
//Write nops to be clean
Hack.WriteNOPs(mProcess, mAddress + Hack.JMPSize, mReplacedInstructionSize - Hack.JMPSize);
}