打开user lingering来运行服务 + 在linux上建立aria2c服务
概括最近在搞自己的小主机，在配置自己的aria2c服务的时候，发现aria2的服务时不时就会断掉,并报错Emergency shutdown sequence commencing。 本文介绍了如何修复这个问题，以及我的aria2服务配置
Writing110
MapleBacon First 1st Place in CTF
It's the first first !!!!!!!!!
Pwn - Sigreturn Oriented Programming (SROP) Technique
BackgroundIn recently ctf (tamuctf 2022), I solve a challenge called void (writeup). This challenge only contains a few line of assembly code, with no libc and NX enabled. The only
first glance of alloca in ctf
0x1 backgroundwhen I was doing zeropts CTF 2022, I found a pwn question called accountant. There is a line of code that use alloca to allocate memory. However, at that time, I didn
关于爬虫限制并发数我竟然用阻塞来实现 20220324编程日记
不是，就挺离谱的。 看了一眼之前写的的爬虫框架。 发现之前实现限制并发数的方法是暂停go routine, 如下所示，就纯纯的等待有空余的位置了，然后继续执行Fetch 离谱在于，如果我有10000个页面要分析，这个东西的实现方式是先创建10000个goroutine，然后等一个goroutine结束了，再挑选新的goroutine执行。 也就是说，如果有N
why pixilation a text is bad
todo. check out https://bishopfox.com/blog/unredacter-tool-never-pixelation
[pwn] Printf stuff in pwn (e.g. pwintf) [MapleCTF2022]
0x0 Introductionprintf is a common vulnerable in the pwn questions. Recently, I got an opportunity to try two very interesting question related to printf in MapleCTF 2022, I think
要emo了要 要抑郁了要
emo了要emo了 好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊好烦啊 现在写作业和写代码啥的都变成防止我变emo的工具了。一停下来就感觉要抑郁了。想死想死想死想死想死想死想死想死想死想死想死 我感觉我人真的要不行了，连续好几天了，都是快要睡着的时候，突然开始出现某明奇妙的幻听，然后心悸，全身发麻动不
[pwn] what is canary and how to bruteforce it [MapleCTF2022]
0x0 IntroductionIn maple ctf 2022 (more write up at here). There is a quesiton require bruteforcing canary To be honest, this is the first time I got practice on brute-forcing cana
[Crypto] 'bit by bit' - an example of timing attack [MapleCTF2022]
0x0 IntroductionIn maple ctf 2022 (more write up at here), there is a crypto question using timing attack, which is a type of side channel attack. timing attack basically is a side