When an application is being created, the Compiler will compile the application source code into several object files made of machine language code. Then the object files are linked together to create the final executable.

Figure 1: Compilation of your source code

In the same manner that the source code of an application is converted into machine code at compilation time, there are tools that can convert a compiled application into assembly language or a higher programming language. These tools are known as dissemblers and de-compilers.

Figure 2: Decompilation of your application

An attacker can use a dissembler or de-compiler to study how a specific application works and what a specific routine does. When the attacker has a good knowledge of the target application, he can modify the compiled application to alter his behavior. For example, the attacker could bypass the routine that checks for the trial period in an application and make it run forever or even worse, cause the application to behave as if it was registered.

Software protectors where created to keep an attacker from directly inspecting or modifying a compiled application. A software protector is like a shield that keeps an application encrypted and protected against possible attacks. When a protected application is going to be run by the operating system, the software protector will first take control of the CPU and check for possible cracking tools (dissemblers or de-compilers) that may be running on the system. If everything is safe the software protector will proceed to decrypting the protected application and giving it the control of the CPU to be executed as normal.

The advantages of using a Software Protector are:

• Protect an application against piracy.
• Prevents attackers from studying how an application is implemented.
• Will not allow attackers to modify an application to change its behavior .

Since software protectors were born, many attackers have centered most of their efforts on attacking the software protectors themselves instead of the applications. Many tools have been developed that aid in the attacking of software protectors. These attacks often result in the attacker obtaining the original application that is decrypted and has the protection wrapper removed.

Figure 3: Common software protectors philosophy

The main problem with software protectors is that they use protection techniques very well known by crackers, so they can be easily bypassed with traditional cracking tools.

Another important problem in software protectors is that they have restricted execution by the operating system, that is, they run with normal application privileges. Because of this attackers can use cracking tools that run at the same priority level as the operating system allowing them to fully supervise what a software protector is doing at a certain time and attack it in specific places.

With Themida® , we have centered in the main weakness that software protectors have thus providing a complete solution to overcome those problems. Themida® uses the SecureEngine® protection technology that, when running in the highest priority level, implements never seen before protection techniques to protect applications against advanced software cracking.

Figure 4: Themida® protection procedure

Click here to see all Themida® features.

SecureEngine® defeats all current cracking tools that can be used against protected applications and it will make sure that your protected applications are only run in safe environments.

Figure 5: SecureEngine® technology adds more strength to the existing protection

Click here to learn more about SecureEngine®

Software protection programming is not a very well known field for most programmers. Software protection techniques are not like "visible" features that can be seen and compared. Because of this most software protection authors could talk about impressive techniques that are included deep inside the protection scheme, when many times most of these techniques hardly exist or they are much simpler than what they seem.

Most software protectors reiterate a lot about using very strong cryptographic algorithms like RSA, Elliptic curves and AES hoping that the final user will believe that those protectors and the cryptic algorithms are unbreakable. This if far from the truth as software protection is very different from data protection. Even if a software protector encrypts the protected application with the most robust cryptographic algorithm, sooner or later the protected application needs to be decrypted in order to be run by the CPU. It is in this phase when most attackers will start their work by dumping the decrypted application from memory to disk thus not having to deal with the cryptographic algorithm and reconstructing of the original application.

In Themida® we want to be realistic about which weakness can be exploiting by attackers and what we really need to pay attention to protect an application with the highest security possible against software cracking.

고액결제의 경우 안전을 위해 카드사에서 확인전화를 드릴 수도 있습니다. 확인과정에서 도난 카드의 사용이나 타인 명의의 주문등 정상적인 주문이 아니라고 판단될 경우 임의로 주문을 보류 또는 취소할 수 있습니다.  

무통장 입금은 상품 구매 대금은 PC뱅킹, 인터넷뱅킹, 텔레뱅킹 혹은 가까운 은행에서 직접 입금하시면 됩니다.  
주문시 입력한 입금자명과 실제입금자의 성명이 반드시 일치하여야 하며, 7일 이내로 입금을 하셔야 하며 입금되지 않은 주문은 자동취소 됩니다.

• 배송 방법 : 택배
• 배송 지역 : 전국지역
• 배송 비용 : 무료
• 배송 기간 : 3일 ~ 7일
• 배송 안내 : - 산간벽지나 도서지방은 별도의 추가금액을 지불하셔야 하는 경우가 있습니다.
  고객님께서 주문하신 상품은 입금 확인후 배송해 드립니다. 다만, 상품종류에 따라서 상품의 배송이 다소 지연될 수 있습니다.
  

교환 및 반품이 가능한 경우
- 상품을 공급 받으신 날로부터 7일이내 단, 가전제품의
  경우 포장을 개봉하였거나 포장이 훼손되어 상품가치가 상실된 경우에는 교환/반품이 불가능합니다.
- 공급받으신 상품 및 용역의 내용이 표시.광고 내용과
  다르거나 다르게 이행된 경우에는 공급받은 날로부터 3월이내, 그사실을 알게 된 날로부터 30일이내

교환 및 반품이 불가능한 경우
- ESD(Electronic Software Distribution), 이메일로 설치key, 설치파일 또는 사용증서로 납품되는 제품의 경우는 제품 자체에 심각한 문제가 있는 경우를 제외하고는

  반품이 불가 합니다.

- 고객님의 책임 있는 사유로 상품등이 멸실 또는 훼손된 경우. 단, 상품의 내용을 확인하기 위하여
  포장 등을 훼손한 경우는 제외
- 포장을 개봉하였거나 포장이 훼손되어 상품가치가 상실된 경우
  (예 : 가전제품, 식품, 음반 등, 단 액정화면이 부착된 노트북, LCD모니터, 디지털 카메라 등의 불량화소에
  따른 반품/교환은 제조사 기준에 따릅니다.)
- 고객님의 사용 또는 일부 소비에 의하여 상품의 가치가 현저히 감소한 경우 단, 화장품등의 경우 시용제품을
  제공한 경우에 한 합니다.
- 시간의 경과에 의하여 재판매가 곤란할 정도로 상품등의 가치가 현저히 감소한 경우
- 복제가 가능한 상품등의 포장을 훼손한 경우
  (자세한 내용은 고객만족센터 Q&A게시판 또는 E-MAIL상담을 이용해 주시기 바랍니다.)

※ 고객님의 마음이 바뀌어 교환, 반품을 하실 경우 상품반송 비용은 고객님께서 부담하셔야 합니다.
  (색상 교환, 사이즈 교환 등 포함)

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