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CTFのWriteupや雑記など

2021-05-19から1日間の記事一覧

Internetwache CTF 2016 : File Checker

Rev

How to solve Decompile it and understand the flow of given program. (Ghidra was not correctly decompiling it around function arguments, so I have made a quick fixes by reading some assembly code.) Solver Script: checkers = [0x12ee, 0x12e0,…

ASIS CTF 2018 Quals : Warm up

Rev

How to solve Add these lines at the top of distributed file (warmup), and compile it with gcc as C source code. #include <math.h> #include <stdio.h> #include <stdint.h> Drink a coffee (needs some time). $ ./a.out ASIS{hi_all_w31c0m3_to_ASISCTF} From ASIS With Love <</stdint.h></stdio.h></math.h>…