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BataBo

BataBo

Here is one of the solutions:

Spoiler

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACsbHDTcxIP0LWYgmPM663d4ylbijmKAs0o0gXodxQEb

It uses cryptography to decrypt a string provided withing the key,key also contains RV and salt,which I both set to all \0,if it succeeds then it prints hi <DecrytpedString> thanks for registering,if it fails it prints invalid serial

 

Edit:

Decrypted Validate function:

Spoiler

ValidateFunc.png.81d689de80e36125f19de28f995784fd.png

 

BataBo

BataBo

Here is one of the solutions:

Spoiler

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACsbHDTcxIP0LWYgmPM663d4ylbijmKAs0o0gXodxQEb

It uses cryptography to decrypt a string provided withing the key,key also contains RV and salt,which I both set to all \0,if it succeeds then it prints hi <DecrytpedString> thanks for registering,if it fails it prints invalid serial

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