Hook Address Finder

DWORD AirMemory::AutoVMHook(DWORD Address, void *Function, DWORD *RetAddr, DWORD MinAddr){
    DWORD i, VMSection, VMSection_Ret;

    Address = GetAbsoluteAddress(Address);

    for(i=Address; ;i++){
        if(*(BYTE *)i == JMP){
            VMSection = *(DWORD *)(i + 1) + i + 5;
            if((VMSection > Memory_Start) && (VMSection < Memory_End)){
                break;
            }
        }
    }

    for(i=VMSection; ;i++){
        switch(*(BYTE *)i){
        case JMP:
            VMSection_Ret =  *(DWORD *)(i + 1) + i + 5;
            if((VMSection_Ret > Memory_Start) && (VMSection_Ret < Memory_End)){
                if(MinAddr && i < MinAddr){
                    i = VMSection_Ret;
                    break;
                }
                WriteHook(i, JMP, Function);
                *RetAddr = VMSection_Ret;
                return i;
            }
            break;

        case CALL:
            VMSection_Ret =  *(DWORD *)(i + 1) + i + 5;
            if((VMSection_Ret > Memory_Start) && (VMSection_Ret < Memory_End)){
                if(MinAddr && i < MinAddr){
                    i = VMSection_Ret;
                    break;
                }
                WriteHook(i, CALL, Function);
                *RetAddr = VMSection_Ret;
                return i;
            }
            break;

        default:
            break;
        }
    }
}