1/25/2024 0 Comments Packing and unpackingWhen we pick up and pack your belongings, we’ll bolt our containers for safety and compile a specific inventory of all your items. Our professional packers will handle all communication with origin agents, destination agents, freight carriers, customs brokers, surveyors, inland haulers, third-party service providers, and overseas partners. The result? The relocation process runs like clockwork. At each of these stages, we’ll provide the right people with the right information. We’ll contact the transferee during each stage of relocation: packing, loading, and delivery. We work closely with ocean and freight transportation companies, which lets us optimize the international corporate relocation process. Our overseas movers and packers will prepare all the necessary travel documents that you need (including transit insurance coverage documentation) and will choose the right containers and equipment to transport your belongings to your chosen destination. We’ll also tell you which items you can and can’t export to your host country. Our professional packers specialize in delivering fragile and high-value items. We offer a full pack, wrap and load service for our customers who are relocating abroad. Our experienced team of corporate movers strives for the highest levels of care, service, and efficiency during every single international move. Our professional packers and movers provide you with expert advice on export and import requirements in your origin and host countries, which streamlines the entire relocation process. We do more than just packing boxes, though. “RIDERSOFTHESTORM”.We’ve got international packing and unpacking wrapped up. So, now to get the original password, we need to XOR the Hex of ‘Messing_in_bytes’ and 1F 2C 37 36 3B 3D 28 19 3D 26 1A 31 2D 3B 37 3E So, the string being returned from 004013B8 is starting from the address 00402150 ie, 1F 2C 37 36 3B 3D 28 19 3D 26 1A 31 2D 3B 37 3E. In next call, CALL CRACKME2.004013B8, the result is being compared with the correct XOR result in 004013B8. After XORing, the result is being pushed at address 0040217E. So that means our password length also should be 16. So, it has given us the hint that our password supplied is being XORed with the string at address 004021A3 (Messing_in_bytes), which is of 16 characters long. And it keeps doing that till our passwords last letter (‘I’) is finished. XOR BL,CL does an XOR operation with ‘M’ and ‘N’. The instruction MOV BL,BYTE PTR DS: transfers one byte to BL (our password’s first letter ‘N’). The instruction MOV CL,BYTE PTR DS: picks up one character, starting at 004021A3 from Hex dump and moving to CL (‘M’). Now the control goes to address 00401399. The same instructions are repeated until the next letter ‘i’ is converted to ‘I’. Olly lands at the following instructions: Once loaded, press F8 and step through the instructions to get an idea about the code. Now again, press CTRL+F2, this will reload the CrackMe2.exe into Olly (Fig-10). This is my way of doing that and it may differ with the method of others. How and which routines/functions we need to inspect is entirely one’s personal way of doing that based on intuition, but more or less it will be similar approach. Again, there may lots of ways to break this functionality and that depends on the software’s behavior, but the ultimate goal is to bypass the password check. We’ll carefully go through the assembly, understand the logic behind this and try to overcome the password checking. The second one is a bit easier as you only need to directly go and see how we can go to the logical end, and can then change the flow. The first option is a bit difficult as you really need to dive in each and every routine/subroutine and understand the logic.
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