I opened and ran the software first and found that it was of no use. Just use exe info pe to check the shell
If it is 32-bit, use IDA32 to open it.
Go and have a look in main0
If you give it directly, then just put the flag on it.
flag{
49d3c93df25caad81232130f3d2ebfad}
This question is similar to the first question of BUU. I feel it is not as difficult as the second and third questions. The second and third questions at least require reading pseudocode and converting characters. This question is not as difficult as the first question directly with IDA. For the first reverse WP article, I should have written the first few WP questions first, but the previous seniors had given guidance and I could not write it independently. It’s just a beginner, I hope to make some achievements in Reverse!