February 2012
Intermediate to advanced
800 pages
23h 55m
English
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Lab 16-2 Solutions
Short Answers
When you run Lab16-02.exe from the command line, it prints a usage string asking for a four-character password.
If you input an incorrect password, the program will respond “Incorrect password, Try again.”
The correct command-line password is
byrr.The
strncmpfunction is called at 0x40123A.The program immediately terminates when loaded into OllyDbg using the default settings.
The program contains a
.tlssection.The TLS callback starts at 0x401060.
The
FindWindowAfunction is used to terminate the malware. It looks for a window with the class nameOLLYDBGand terminates the program if it is found. You can change the window class name using an OllyDbg plug-in like PhantOm, or NOP-out the call to exit at 0x40107C.At first, ...
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