First of all, I used the winhex tool to load the "Houpu Simulation Test System .exe", and casually looked at some bytecodes.
It can be seen that the program is a piece of software written in C#, as shown in the figure below:
Then, I found that the software was only a few hundred KB, but there were thousands of test questions, and I found that there was a data.dll file under the directory.
Intuition, tell me that this is a database file, not a dynamically linked library, and then I change the suffix to mdb format and use the mdb database browser
The structure proves that my conjecture is correct! However, a password is required, as shown in the figure below:
Alas, I tried some simple passwords, such as: 123456, admin, pass, etc., but they all failed to log in.
Then, I thought of starting from the Houpu simulation test system, because .exe the software was not encrypted, I searched for keywords such as the string "Microsoft.Jet.OLEDB" in the connection database.
The result was searched, and the password turned out to be: houputest, then opened the data.mdb, entered the password: houputest, and logged in successfully!
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