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TrebledJ's Pages · Sep 4, 2023

DUCTF 2023 – Wrong Signal

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Description Medium. 27/1424 solves. I am getting all the wrong signals from this binary. Author: hashkitten Writeup Analysis On decompilation, the binary appears to be an innocent program which adds and subtracts numbers. The code itself is relatively simple. // Set the SIGSEGV handler. memset ( & sigsegv_sigaction , 0 , 0x98 ) ; sigsegv_sigaction . __sigaction_handler . sa_handler = oops ;…

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