#include"SYSD.h"


bool InsertSysdHook() {
	
	/*
	* Sample games:
	* https://vndb.org/v2069
	*/
	const BYTE bytes[] = {
		0xC1, 0xE9, 0x02,              // shr ecx,02      <- hook here
		0xF3, 0xA5,                    // repe movsd 
		0x8B, 0xCA,                    // mov ecx,edx
		0x83, 0xE1, 0x03,              // and ecx,03
		0xF3, 0xA4,                    // repe movsb 
		0x5F,                          // pop edi
		0xB8, 0x01, 0x00, 0x00, 0x00   // mov eax,00000001
	};

	ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
	ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
	if (!addr) {
		ConsoleOutput("Sysd: pattern not found");
		return false;
	}

	HookParam hp;
	hp.address = addr;
	hp.offset=get_reg(regs::esi);
    hp.index = 0;
    hp.padding = 0x12;
	hp.split = get_stack(2);
	hp.split_index = 0;
	hp.type = USING_STRING | NO_CONTEXT | USING_SPLIT;
	hp.filter_fun = NewLineCharFilterA;
	ConsoleOutput("INSERT Sysd");
	return NewHook(hp, "Sysd");
}

bool SYSD::attach_function() { 
    return InsertSysdHook();
}