format string 0

Challenge Description

Can you use your knowledge of format strings to make the customers happy?

Download the binary here.

Download the source here.

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Solution

Download the given files.

From the given C file, you can see that the buffer size of the input that we are giving is 32.

So, I tried by giving an input that is greater than the buffer size [ more that 32 characters ] and got the flag.

Flag: picoCTF{7h3_cu570m3r_15_n3v3r_SEGFAULT_f89c1405}