Programmer Think

It's obviously all green. add Only one chunk can be controlled, and the size is limited. edit End with enter. There is an off by null. show Just output. free There's a uaf. In fact, compared with lonelywolf, it just opens a sandbox. From the whole point of view, that index is the kind to tease you. libc gave 2.27 at that time, but it wa ...

The first time to start the kernel problem depends on the reproduction of fmyy master's blog. After the reproduction, I have a general understanding of the use of uaf in the kernel. Problem solving steps: 1. Write a blog with a short talk. The topic gives us a compressed package and decompresses it. It is found that there is no vmlinux. Therefo ...

Role of file system 1. Is a directory for disk management 2. Is the way to operate all hardware devices in linux 3. Functional mechanism of the system File system is also called application program. Writing application program should not only exist in the file system, but also use many functions of the file system. Most embedded companies are ...

namei.c 1. Through nameI C continue to be familiar with the workflow and mode of file system inode dir_ Entry (file entry structure) dir_ The entry structure has two elements File name file inode number 2. By interpreting the actual process of the source code, we know the implementation method of directory operation, file operation and link o ...

sql injection is When the user enters some sql statements that are not the user name or password These statements are not filtered After execution, the injector obtains the information of the database through echo and other methods Water has been used for several days for visual studio 2022 and windows 11, so this article is a little ...

preface How to evaluate the 2021 dai Lian cup?, My evaluation is "immortals fight, mortals suffer". Misc Misc1-decodemaster After getting the title, open the word file and find that it is a string of random codes with the font of Wingdings 2 Modify the font and find that the font can be displayed normally when it is in bold ( ...

DisclaimersThe host penetrated by this article is legally authorized. The tools and methods used in this article are limited to learning and communication. Please do not use the tools and infiltration ideas used in this article for any illegal purpose. I will not bear any responsibility for all the consequences, nor be responsible for any misus ...

In October 2021, Guangdong strong net cup, CRYPTO's RSA AND BASE? Download the attachment, which is a txt file. Open it and find the RSA ciphertext and a codec table similar to base32, which also conforms to the hint of the title: . . As usual, use CTF-RSA-TOOL to run the RSA problem and find that it can run out: . . This should be the flag ...

Direct decompression of "flag.rar" found that there was a password, and the 4-6-bit password exploded unsuccessfully, indicating that the password was obtained from two other PNG pictures. Directly take all pictures out of binwalk and break them down (binwalk-e 1.png), (binwalk-e 2.png) Get a "password.xls" file and a &q ...

web254 if($user->login($username,$password)){ if($user->checkVip()){ $user->vipOneKeyGetFlag(); } Judge whether the entered username and password are equal to the xxxxxx given by the title. If the verification is successful, it will be given to the flag, so get the parameters directly ?username=xxxxxx&am ...