【Android】CheatEngine With Kernel Module
· ☕ 3 min read
Sometimes, we have to face the situation where we need to read or write process memory but want the process to be completely unaware. In general, users can achieve this by utilizing the process_vm_readv and process_vm_writev syscalls provided from Android kernel. However, there are several methods to detect such malicious behaviors. Some anti-cheaters insert a type of special memory pages into the game’s memory, they can detect these memory pages being read or written by mincore.

Windows Hide Process
· ☕ 2 min read
Sometimes, we may need hide our process from various programs in order to achieve specific objectives. For instance, we may want to hide our virus from antivirus software, or conceal our cheat from anti-cheat programs. There are lots of different approaches introduced by blogs in internet. In this article, I will introduce a few methods that I believe are both effective and relatively straightforward. Unlink EPROCESS First and foremost, I

Rust FFI
· ☕ 5 min read
Sometimes, we need to implement some libs using rust, and these libs should be loaded by other programs, which means we have to implement some interface for these libs based on the specific foreign interface standard. Usually, this specific standard is called FFI(Foreign Function Interface). It is an important mechanism that allows libraries to access functions from other programming language. In this way, we can use this mechanism call C functions in Rust language or call Rust functions in C language.

NepCTF2023 Qriver3.0出题思路
· ☕ 3 min read
前言 大体设计思路与 Qriver2.0出题思路 差不多,依旧是使用自己写的LLVM混淆编译了一个Windows驱动程序。主要原因是去年是0解,感

Rust Hook
· ☕ 6 min read
With the accelerating advancement of Rust language, more and more tech companies are recompiling their programs using Rust, especially client security software. However, there are few documents available that explain how to hook any functions using Rust. Therefore, I have written this blog to help you understand how to hook programs using the retour-rs crate for Rust. In the C language, two hook libraries, detour and MinHook, are commonly used and both have been implemented in Rust.

瓦洛兰特反作弊系统Vanguard浅析
· ☕ 21 min read
一月的时候分析了一下Riot Vanguard,并且得知在三月的时候Vanguard有重大更新,遂现在公开此分析报告。 整体门槛与难点 Vangu

【安卓】IDA调试so与JNI_OnLoad
· ☕ 3 min read
在CTF中经常有Android题需要调试so,或者需要调试so的初始化函数JNI_OnLoad和init_array,正好这次腾讯游戏安全大

使用Clang-Format格式化代码
· ☕ 8 min read
代码风格一致化和规范化,可以说是一直困扰我多年,并严重干扰我写代码效率的一个巨大难题。我总是会在写的时候思考变量、方法、类的命名,代码块的缩

Vue3 + ElementUI + Flask 速成网站
· ☕ 5 min read
Vue Install Install Node.js 先安装 nodejs 下载 LTS Windows Installer (.msi)然后运行安装就可以了。安装时有一个勾选项是“是否安装其他依赖库”可以不勾选 安装完毕后 node -v 和 npm -v 查看是否

“西湖论剑” 2023 Reverse WriteUp
· ☕ 6 min read
校队参赛,Re方向拿了一个一血一个二血。这次Re题目质量还可以,没有那种特别恶心的乱七八糟算法来恶心人,考的都是一些针对性的知识点。 Dual personality 经典

VS编译Shellcode(DLL脱库)
· ☕ 2 min read
有的时候,因为一些特殊目的,需要编译不带导入表甚至无PE头和初始化函数的shellcode。这里记录两种方法。 纯shellcode 当shel

如何向LLVM提交代码
· ☕ 3 min read
这几天给LLVM提了一些Commit,整一个提交过程非常复杂(因为其官方是不接受Github PullRequest的),review也十分严

OLLVM 排坑优化
· ☕ 5 min read
在写OLLVM的时候,经常会遇到各种坑点,这里就专门开一篇来记录一些自己遇到的、比较难处理的坑。本文动态更新。 复制基本块相关 在Obf的时候经