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• What is the address of buf (the local variable in the main function)? Enter the answer in either hexadecimal format (a 0x followed by 8 "digits" 0-9 or a-f, like 0xbfff0014) or decimal format. Note here that we want the address of buf, not its contents.
0x00f5f664
• What is the address of ptrs (the global variable) ? As with the previous question, use hex or decimal format.
0x00dd1000
• What is the address of write_secret (the function) ? Use hex or decimal.
0x00dc6fc0
• What is the address of p (the local variable in the main function) ? Use hex, or decimal format.
0x00f5f64c
• What input do you provide to the program so that ptrs[s] reads (and then tries to execute) the contents of local variable p instead of a function pointer stored in the buffer pointed to by ptrs? You can determine the answer by performing a little arithmetic on the addresses you have already gathered above -- be careful that you take into account the size of a pointer when doing pointer arithmetic. If successful, you will end up executing the pat_on_back function. Enter your answer as an unsigned integer.
407955
• What do you enter so that ptrs[s] reads (and then tries to execute) starting from the 65th byte in buf, i.e., the location at buf[64]? Enter your answer as an unsigned integer.
407977
     
 
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