bugku:http://120.24.86.145:9009/19.phpHaven't finished reading the source code, I have directly added a password[]=1 result to get flag. Then look at the source code I do not understand why you can get the source code. Really, don't believe you see.1PHP2$flag ="Flag";3 4 if(Isset ($_get['Password'])) {5 if(Ereg ("^[a-za-z0-9]+$", $_get['Password']) ===FALSE)6Echo'You password must be alphanumeric';7 Else if(Strpos ($_get['Password'],'--') !==FALSE)8Die'Flag:'. $flag);9 ElseTenEcho'Invalid Passwo
What is NX Bit?
Its a exploit mitigation technique which makes certain areas of memory non executable and makes an executable area, non w Ritable. Example:data, stack and heap segments is made non executable while the text segment is made non writable. List the header information for an elf programReadelf-l Vuln
How to bypass NX bit and achieve arbitrary code execution?
NX bit can is bypassed using an attack technique called "retu
implementation is more complex. The general process is to call the __gi___fortify_fail function first, __gi___fortify_fail call the __libc_message function, __libc_message the last call Backtrace_and_maps and _ _gi_abort function, generate SIGABRT signal, and through __gi___libc_secure_getenv according to the system environment variables to decide whether to produce Coredump file, __gi_abort execution to the last Call _exit, program exit.On the origin of the name of Canary, I found an interesti
Label:Can release py over version 5.3 #!/usr/bin/env python
"""
Copyright (c) 2006-2014 sqlmap developers (http://sqlmap.org/)
See the file ‘doc/COPYING‘ for copying permission
"""
from lib.core.enums import PRIORITY
__priority__ = PRIORITY.LOW
def dependencies():
pass
def tamper(payload, **kwargs):
"""
Replaces space character (‘ ‘) with comments ‘/*|--|*/‘
Tested against:
* Microsoft SQL Server 2005
* MySQL 4, 5.0 and 5.5
* Oracle 10g
* Pos
0x01 backgroundPHP programmers will inevitably use some character substitution functions (str_replace), inverse functions (stripslashes) in the development process, but these functions will bypass global defenses and cause SQL injection vulnerabilities if they are used improperly.0x03 Vulnerability Analysis Str_replace function error usageThe first case is when the program is written using the Str_replace function to replace the single quotation marks
Label:0x01 backgroundToday's web programs basically have a global filter for SQL injection, like PHP to open the GPC or on the global file common.php using the Addslashes () function to filter the received parameters, especially single quotes. In the same article, we need to find some encoding and decoding functions to bypass the global protection, this article describes the case of Base64decode ().The loophole comes from dark clouds: http://www.wooyu
Label:0x01 backgroundToday's web programs basically have a global filter for SQL injection, like PHP to open the GPC or on the global file common.php using the Addslashes () function to filter the received parameters, especially single quotes. In this case we need to find some code decoding function to bypass the global protection, this article is about UrlDecode (), the same Daniel please consciously detour ~The loophole comes from dark clouds: http:
I suddenly wondered if we could use any method to bypass the restrictions of SQL injection? I visited the Internet and found that most of the methods mentioned are aimed at and "'" and "=" filtering breakthroughs. Although they are somewhat improved, however, there are still some keywords that are not bypassed. Because I do not often intrude into the website, I do not dare to comment on the effect of the above filter, but it is certain that the effect
Tags: Scene window lov name splay quality break ati MySQL0x00 Preface ? Ngx_lua_waf is a Ngx_lua-based Web application firewall that is easy to use, high performance, and lightweight. The default defense rule is in the wafconf directory, which extracts several core SQL injection defense rules: Select. + (from | Limit)
(?:( Union (. *?) Select ) )
(?:from \w+information_schema\w) This side mainly shares three kinds of alternative ideas, Bypass NGX_LUA
bypass capacitance is not a theoretical concept, but a regular use of practical methods, in the 50-60 's, the word has its own meaning, and now no longer used. An electron tube or transistor needs to be biased, which is the DC supply condition that determines the operating point. For example, the gate of the tube with respect to the cathode is often required to add a negative pressure, in order to work in a DC power, in the cathode to the ground conne
Before writing the article received a lot of praise, mainly to help everyone to learn the new ideas. Since the release of the first article, I began to prepare the second article, the final plan to start in 07v8, this article I can guarantee that you can learn a lot of ideas. Before want to prepare an example video, request a lot of manufacturers to authorize, but involved in the vulnerability information, the manufacturers are very rigorous, so the whole process does not have relevant practical
the Web application, the input and program are mixed into SQL commands to access the database. The SQL commands that the final web app sends to the background data are:Select * from users where username = ' admin ' and Password = ' admin1234 ' (this form)This SQL query requires the database to check each row in the user table to extract records for each username column that has the admin and password columns values of admin1234. If the condition after where in the database is satisfied. The app
1. Use the encoding technology to bypass
Such as urlencode and ASCII code bypass. For example, if or 1 = 1, % 6f % 72% 20% 31% 3D % 31, and test can also be char (101) + char (97) + char (115) + char (116 ).
2. Bypass with spaces
For example, if two spaces replace one space, use tab instead of space, or delete all spaces, suchOr swords = 'swords. Due to the loose
0x00 Preface
Currently, some injection prevention programs are built in mainstream CMS systems, such as Discuz and dedeCMS. This article mainly introduces the bypass method.
0x01 Discuz x2.0 anti-Injection
Anti-injection Principle
Here, we take the injection vulnerability of a recent Discuz plug-in as an example to describe the bypass method in detail.
The vulnerability exists in the getGoods function of r
Author: k3nz0
This lessons is devided into 3 parts:[1] Introduction[2] Types of filters[3] Conclusion
[1] Introduction:Nowadays, most of "securised" websites, make filters to dont allow cross site scripting "injections", however, we can bypassThese filters by using the methods shown below :)
[2] Types of filters:We will learn, how to bypass these xss filters:[+] Bypass magic_quotes_gpc (if its on)[+]
Bypass Buffer Overflow Protection System
-- [1-IntroductionRecently, some commercial security agencies have begun to propose some solutions to solve the buffer overflow problem. This article analyzes these protection schemes and introduces some technologies to bypass these buffer overflow protection systems.
Many commercial organizations have created many technologies to prevent Buffer Overflow. Recentl
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