BackdoorCTF 2018: bookkeeping Write-up

Solved by sherl0ck This was my first challenge that involved the shared memory object concept and I found it pretty interesting to solve. The provided binary began to segfault after an initial run and I contacted the admins who promptly addressed the issue and released an update for this challenge. The shared object was not... Continue Reading →

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N1CTF 2018: vote Writeup

Solved by sherl0ck Firstly, kudos to the organizers for conducting such a quality CTF. Coming to this particular challenge, we were given the libc and the binary. The following were the mitigation's enforced on the binary- gdb-peda$ checksec CANARY : ENABLED FORTIFY : disabled NX : ENABLED PIE : disabled RELRO : Partial Reversing this... Continue Reading →

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