C99 PHP Backdoor is a PHP script that providing a remote malicious user with access to the victim machine. Affected Products Any unprotected system is vulnerable. Apr 7, 2022 · PHP Backdoor and hacking shell archive, all php shells, r57, wso, symlink, b374k, green shell, mini shell, zerobyte shell The c99 PHP utility provides functionality for listing files, brute-forcing FTP passwords, updating itself, executing shell commands and PHP code. It also provides for connecting to MySQL databases, and initiating a connect-back shell session. c99 background. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 bypass. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 hack. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 shell. Hacking Script Kiddies, r57.gen.tr Shells Are Backdoored in a Way You ...C Programming at Wikibooks. C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. Jan 12, 2015 · What is PHP.C99? C99 is a very popular PHP based web-shell. There are numerous C99 variants which infect vulnerable web application to give hackers a GUI. The shell lets the attacker take control of the server and also browse the file system, upload, edit, delete, view files and even change file permissions amongst other dangerous actions. Probably the most notorious PHP backdoor is the C99 shell. The C99 shell has a lot of useful functionality, including quickly searching for sensitive files on the system, exploring running processes, executing commands via the server, and even a handy self uninstall feature. C99 Shell Shortfalls. C99 shell has two major problems.Aug 7, 2013 · I found the solution just by debugging the actual php code that handles the file upload. Just do the following 2 steps like below and it will work. Step 1: Go to this directory. Step 2: Edit the index.php and override the variable like in the picture. Make sure to add it right before the 'require_once' statement. That's it, now u can upload ... Jun 26, 2014 · junio 26, 2014. Si eres de los que va dejando "niditos de amor" en servidores web vulnerables con el shell C99.php, que sepas que esas pequeñas puertecitas están abiertas también para todo aquel que quiera entrar. Matthew Bryant nos recuerda que el shell C99 tiene un backdoor debido a una vulnerabilidad en el comando extract (): C99 is a PHP webshell. Attackers uploads it on web server in order to get information and above all execute commands with web user privileges (ex: www-data). This webshell is protected by a customizable password, so interface access is limited to people who know the password.Feb 14, 2021 · Finding a c99 shell is an excellent way to identify a compromise on a system. The c99 shell is about 1500 lines long, and some of its traits include showing security measures the web server may use, a file viewer that has permissions, a place where the attacker can operate custom PHP code (PHP malware c99 shell). root/ Shell Type (PHP-ASP-PERL) Script Include.txt? Download.rar 001 c99 Shell PHP .txt? .rar 002 r57 Shell PHP .txt? .rar 003 Tryag Shell PHP .txt? .rar 004About C99Shell. An excellent example of a web shell is the c99 variant, which is a PHP shell (most of them calls it malware) often uploaded to a vulnerable web application to give hackers an interface.Variable-length array (VLA) types and variably-modified (VM) types. Improvements of braced-init-list for array, struct and union types. Non-constant initializers. Designated initializers. Idempotent cvr-qualifiers. Trailing comma in enumerator-list. Hexadecimal floating constants.x76x09.php is an uncensored directory browser/uploader that allows the malicious uploader to gain full control of your website. Make sure you temporarily disable all methods of uploading files to your server immediately and delete all instances of malicious code in ALL files.0)"," {"," foreach ($dbsqlquicklaunch as $item)"," {"," echo \"[ \" . $item[0] . \"] \";"," }"," }"," echo \" R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.netShell Indir! – PHP Shell Download. May 9, 2018 March 29, 2023 Webmaster 232 Comments. root/ Shell Type (PHP-ASP-PERL): Script: Include.txt? Download.rar: 001: c99 Shell : PHP R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.netroot/ Shell Type (PHP-ASP-PERL) Script Include.txt? Download.rar 001 c99 Shell PHP .txt? .rar 002 r57 Shell PHP .txt? .rar 003 Tryag Shell PHP .txt? .rar 004Issue originally created by user lifeforms on date 2014-06-24 13:28:39. Link to original issue: SpiderLabs/owasp-modsecurity-crs#189. It turns out that c99.php, a PHP 'web shell', is backdoored by a c99shcook parameter that bypasses auth...Probably the most notorious PHP backdoor is the C99 shell. The C99 shell has a lot of useful functionality, including quickly searching for sensitive files on the system, exploring running processes, executing commands via the server, and even a handy self uninstall feature. C99 Shell Shortfalls. C99 shell has two major problems.inurl:"c99.php" filetype:php "c99shell v. 1.0 " ok c99.php Encoder Tools Proc. FTP brute Sec. SQL PHP-code Update Feedback Self remove Logoutjunio 26, 2014. Si eres de los que va dejando "niditos de amor" en servidores web vulnerables con el shell C99.php, que sepas que esas pequeñas puertecitas están abiertas también para todo aquel que quiera entrar. Matthew Bryant nos recuerda que el shell C99 tiene un backdoor debido a una vulnerabilidad en el comando extract ():size_t strftime( char* restrict str, size_t count, const char* restrict format, const struct tm* restrict tp ); (since C99) Converts the date and time information from a given calendar time tp to a null-terminated multibyte character string str according to format string format. Up to count bytes are written.C99 is a very popular PHP based web-shell. There are numerous C99 variants which infect vulnerable web application to give hackers a GUI. The shell lets the attacker take control of the server and also browse the file system, upload, edit, delete, view files and even change file permissions amongst other dangerous actions. Simple-Backdoor-One-Liner.php This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.Encoder Bind Proc. FTP brute Sec. SQL PHP-code Feedback Self remove Logout ... c99.php 153.91 KB 19.08.2008 10:30:04 root/adm x76x09.php is an uncensored directory browser/uploader that allows the malicious uploader to gain full control of your website. Make sure you temporarily disable all methods of uploading files to your server immediately and delete all instances of malicious code in ALL files.R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.netsafe mode bypass root exploits shell archive.r57 c99 alfa wso php 5 6 7 8 shell mini asp aspx symlink b374k adminer upload marijuana txt rar download.fseek. Sets the file position indicator for the file stream stream to the value pointed to by offset . If the stream is open in binary mode, the new position is exactly offset bytes measured from the beginning of the file if origin is SEEK_SET, from the current file position if origin is SEEK_CUR, and from the end of the file if origin is SEEK ...0. 1.Firts, before you can using powershell on php you must open the powershell on Windows (no using php) and type this script in powershell window (without quotes) "Set-ExcetuionPolicy RemoteSigned". To verify this change type this command on window powershell (without quotes) "Get-ExecutionPolicy" if you show "RemoteSigned" text, your changes ...In addition to previous suggestions, you can mitigate the problem by adding an .htaccess file to the directory in which are hosted the images and specify to treat them with the default handler for static files: If you upload a php file to this …. Two doors where the shell hack can take over the server.R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.netApr 7, 2022 · PHP Backdoor and hacking shell archive, all php shells, r57, wso, symlink, b374k, green shell, mini shell, zerobyte shell Dec 20, 2021 · fseek. Sets the file position indicator for the file stream stream to the value pointed to by offset . If the stream is open in binary mode, the new position is exactly offset bytes measured from the beginning of the file if origin is SEEK_SET, from the current file position if origin is SEEK_CUR, and from the end of the file if origin is SEEK ... PHPMailer offers many functionalities over the PHP core function mail(), including SMTP SSL encryption and authentication, HTML messages, file attachments and more.. On top of that, PHPMailer is much easier to use than mail() and provides a clean, readable object-oriented syntax.Size: 15.09 KB 30-06-2022 12:38:50. Wso Shell. Size: 47.12 KB 30-06-2022 12:55:04. c99 Shell. Size: 113.13 KB 30-06-2022 12:45:17. IndoXploit v4.1 PHP Shell. Size: 58.43 KB 30-06-2022 12:38:06. r57 Shell Classic. Size: 57.67 KB 30-06-2022 12:52:53.I found the solution just by debugging the actual php code that handles the file upload. Just do the following 2 steps like below and it will work. Step 1: Go to this directory. Step 2: Edit the index.php and override the variable like in the picture. Make sure to add it right before the 'require_once' statement. That's it, now u can upload ...x76x09.php is an uncensored directory browser/uploader that allows the malicious uploader to gain full control of your website. Make sure you temporarily disable all methods of uploading files to your server immediately and delete all instances of malicious code in ALL files.\"; if (($sql_query) and (!$submit)) {echo \"Gercekden eminmisin ? :)\";} else {echo \"SQL-Query\";} echo \":Aug 7, 2007 · Anyone here have any experience with this so called shell script named c99.php. There are many phishing scripts out there, C99shell.php is one of'em which provides a shell-like prompt to let you execute PHP code interactively. The Php Shell is a Php based script. With this script a hacker can execute arbitrary shell commands or browse the file ... -C99(previously known as C9X) is an informal name for '''ISO/IEC 9899:1999, a past version of the C programming language standard. It extends the previous version with new features for the language and the standard library, and helps implementations make better use of available computer hardware, such as the IEEE 754-1985 arithmetic, and.c99는 ...The c99 PHP utility provides functionality for listing files, brute-forcing FTP passwords, updating itself, executing shell commands and PHP code. It also provides for connecting to MySQL databases, and initiating a connect-back shell session.C99Shell v. 1.0 beta (21.05.2005) Owned by (or. Listing directory (39 files and 1 directories): Name. Size. Modify. Owner/Group. Perms.C Programming at Wikibooks. C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs.0)"," {"," foreach ($dbsqlquicklaunch as $item)"," {"," echo \"[ \" . $item[0] . \"] \";"," }"," }"," echo \" The c99 PHP utility provides functionality for listing files, brute-forcing FTP passwords, updating itself, executing shell commands and PHP code. It also provides for connecting to MySQL databases, and initiating a connect-back shell session.قذيفة c99 حوالي 1500 خطوط طويلة ، وبعض السمات الخاصة به تشمل إظهار تدابير الأمن قد تستخدم خادم الويب ، عارض ملف لديه أذونات ، وهو المكان الذي يمكن ان تعمل المهاجم رمز php مخصص (php البرمجيات الخبيثة ... root/ Shell Type (PHP-ASP-PERL) Script Include.txt? Download.rar 001 c99 Shell PHP .txt? .rar 002 r57 Shell PHP .txt? .rar 003 Tryag Shell PHP .txt? .rar 004 Jul 10, 2014 · # Exploit Title: C99 Shell Authentication Bypass via Backdoor # Google Dork: inurl:c99.php # Date: June 23, 2014 # Exploit Author: mandatory ( Matthew Bryant ) IndoSec private bypass shell, Password : IndoSec Usage.Password login shell, Linux Bypass Shell, Private 2022 Shell, indosec indonesian hacker group bypass bootstrap shell.قذيفة c99 حوالي 1500 خطوط طويلة ، وبعض السمات الخاصة به تشمل إظهار تدابير الأمن قد تستخدم خادم الويب ، عارض ملف لديه أذونات ، وهو المكان الذي يمكن ان تعمل المهاجم رمز php مخصص (php البرمجيات الخبيثة ... PHP Shell. PHP Shell is a shell wrapped in a PHP script. It's a tool you can use to execute arbitrary shell-commands or browse the filesystem on your remote webserver.. Download shell-c99 for free - Shell C99.php, Shell C99.php, shell-c99.xml, etc. 26 files of shell-c99 found at 2shared. Click here to download shell-c99 for free now ..root/ Shell Type (PHP-ASP-PERL) Script Include.txt? Download.rar 001 c99 Shell PHP .txt? .rar 002 r57 Shell PHP .txt? .rar 003 Tryag Shell PHP .txt? .rar 004 c99 web shell backdoor malware. XDR & SIEM. fix-webshell-backdoor-c99. IT-Integrated Remediation Projects. Cloud, Virtual, and Container Assessment. Easy-to-Use RESTful API. Automation-Assisted Patching. With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order ...C99 is a PHP webshell. Attackers uploads it on web server in order to get information and above all execute commands with web user privileges (ex: www-data). This webshell is protected by a customizable password, so interface access is limited to people who know the password.Jan 20, 2018 · PHP Shell. PHP Shell is a shell wrapped in a PHP script. It's a tool you can use to execute arbitrary shell-commands or browse the filesystem on your remote webserver.. Download shell-c99 for free - Shell C99.php, Shell C99.php, shell-c99.xml, etc. 26 files of shell-c99 found at 2shared. Click here to download shell-c99 for free now .. Apr 19, 2016 · C99 is a PHP webshell. Attackers uploads it on web server in order to get information and above all execute commands with web user privileges (ex: www-data). This webshell is protected by a customizable password, so interface access is limited to people who know the password. In some cases, attackers that create new web shells that may use non-standard naming conventions such as c99.php or a.php. In other cases, they will put web shells in non-standard web directories (like we did for our eval web shell example, images directory). Default file mods. In many cases, attackers don’t create a new file for their web shell.Tutorial on how to use the c99 shell. The c99 shell is now detected! But here is the link: http://www.mediafire.com/download.php?39q4wolex2gvoesI'm not respo...R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.netOct 29, 2019 · 10/29/2019. C99 shell. The c99 shell is a somewhat notorious piece of PHP malware. C99 shell is often uploaded to a compromised web application to provide an interface to an attacker. The c99 shell allows an attacker to hijack the web server process, allowing the attacker to issue commands on the server as the account under which PHP is running. R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.net GitHub Gist: instantly share code, notes, and snippets.\";}","}","else","{"," if ($act == \"copy\") {$err = \"\"; $sess_data[\"copy\"] = array_merge($sess_data[\"copy\"],$actbox); c99_sess_put($sess_data); $act = \"ls\"; }"," elseif ($act == \"cut\") {$sess_data[\"cut\"] = array_merge($sess_data[\"cut\"],$actbox); c99_sess_put($sess_data); $act = \"ls\";}"," elseif ($act == \"unselect\") {foreach ...Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) script kiddie hacking. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) Hacking Script Kiddies, r57.gen.tr Shells Are Backdoored in a Way You Might Not Guess; secret code. Reversing Snapchat – Pressure Cooker Hidden Code? secret vault hack Encoder Bind Proc. FTP brute Sec. SQL PHP-code Feedback Self remove Logout ... c99.php 153.91 KB 19.08.2008 10:30:04 root/adm ftp apache inurl:c99.php c99shell+v.+1.0 16 C99Shell v. 1.0 pre-release build #16 download intitle:c99shell "Software: Apache" allinurl: c99.phpftp apache inurl:c99.php c99shell+v.+1.0 16 C99Shell v. 1.0 pre-release build #16 download intitle:c99shell "Software: Apache" allinurl: c99.phpGitHub Gist: instantly share code, notes, and snippets.Shell Indir! – PHP Shell Download. May 9, 2018 March 29, 2023 Webmaster 232 Comments. root/ Shell Type (PHP-ASP-PERL): Script: Include.txt? Download.rar: 001: c99 Shell : PHPWSO Shell new version generated by 2023 version. Shell no password, all php version executable fix version. Download : WSO Shell Download قذيفة c99 حوالي 1500 خطوط طويلة ، وبعض السمات الخاصة به تشمل إظهار تدابير الأمن قد تستخدم خادم الويب ، عارض ملف لديه أذونات ، وهو المكان الذي يمكن ان تعمل المهاجم رمز php مخصص (php البرمجيات الخبيثة ... Variable-length array (VLA) types and variably-modified (VM) types. Improvements of braced-init-list for array, struct and union types. Non-constant initializers. Designated initializers. Idempotent cvr-qualifiers. Trailing comma in enumerator-list. Hexadecimal floating constants.Web shells come in many shapes and sizes. From the most complex of shells such as r57 and c99 to something you came up with while toying around with variables and functions. Anyone here have any experience with this so called shell script named c99.php. There are many phishing scripts out there, C99shell.php is one of'em which provides a shell-like prompt to let you execute PHP code interactively. The Php Shell is a Php based script. With this script a hacker can execute arbitrary shell commands or browse the file ...قذيفة c99 حوالي 1500 خطوط طويلة ، وبعض السمات الخاصة به تشمل إظهار تدابير الأمن قد تستخدم خادم الويب ، عارض ملف لديه أذونات ، وهو المكان الذي يمكن ان تعمل المهاجم رمز php مخصص (php البرمجيات الخبيثة ...18 commits Failed to load latest commit information. LICENSE README.md c99shell.php c99shell.zip README.md C99 WebShell with PHP7 and MySQL Support PHP 7 and safe-build Update of the popular C99 variant of PHP Shell with MySQL support (extension of https://github.com/KaizenLouie/C99Shell-PHP7 ). Feb 14, 2021 · Finding a c99 shell is an excellent way to identify a compromise on a system. The c99 shell is about 1500 lines long, and some of its traits include showing security measures the web server may use, a file viewer that has permissions, a place where the attacker can operate custom PHP code (PHP malware c99 shell). May 20, 2013 · Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time. c99 background. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 bypass. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 hack. Every C99 / C99.php Shell Is Backdoored (A.K.A. Free Shells for Everyone!) c99 shell. Hacking Script Kiddies, r57.gen.tr Shells Are Backdoored in a Way You ...Feb 25, 2019 · PHP 7 and safe-build Update of the popular C99 variant of PHP Shell. c99shell.php v.2.0 (PHP 7) (25.02.2019) Updated by: PinoyWH1Z for PHP 7. About C99Shell. An excellent example of a web shell is the c99 variant, which is a PHP shell (most of them calls it malware) often uploaded to a vulnerable web application to give hackers an interface ... GitHub Gist: instantly share code, notes, and snippets.In some cases, attackers that create new web shells that may use non-standard naming conventions such as c99.php or a.php. In other cases, they will put web shells in non-standard web directories (like we did for our eval web shell example, images directory). Default file mods. In many cases, attackers don’t create a new file for their web shell.Encoder Bind Proc. FTP brute Sec. SQL PHP-code Feedback Self remove Logout ... c99.php 153.91 KB 19.08.2008 10:30:04 root/admc99.php Updated to PHP8 last year README.md C99Shell-PHP8 PHP 8 and safe-build Update of the popular C99 variant of PHP Shell. c99.php v.2.1 (PHP 8) (02.02.2022) Updated by: HolyOne for PHP 8 on top of KaizenLouie c99 PHP7 Build About C99Shell File Name ↓ File Size ↓ Date ↓ ; Parent directory/--index.php: 117 B: 2015-Jan-21 11:13: php-3.0.17-win32.zip: 1.8 MiB: 2015-Jan-21 11:13: php-3.0.18.tar.gz: 2.1 MiB: 2015-Jan-21 11:13root/ Shell Type (PHP-ASP-PERL) Script Include.txt? Download.rar 001 c99 Shell PHP .txt? .rar 002 r57 Shell PHP .txt? .rar 003 Tryag Shell PHP .txt? .rar 004 Feb 25, 2019 · The c99 shell lets the attacker take control of the processes of the Internet server, allowing him or her give commands on the server as the account under which the threat is operating. It lets the hacker upload, browse the file system, edit and view files, in addition, to deleting, moving them and changing permissions.
Encoder Bind Proc. FTP brute Sec. SQL PHP-code Feedback Self remove Logout ... c99.php 153.91 KB 19.08.2008 10:30:04 root/adm. Fad 1223 jav
Feb 25, 2019 · The c99 shell lets the attacker take control of the processes of the Internet server, allowing him or her give commands on the server as the account under which the threat is operating. It lets the hacker upload, browse the file system, edit and view files, in addition, to deleting, moving them and changing permissions. C Programming at Wikibooks. C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs.C99 is a very popular PHP based web-shell. There are numerous C99 variants which infect vulnerable web application to give hackers a GUI. The shell lets the attacker take control of the server and also browse the file system, upload, edit, delete, view files and even change file permissions amongst other dangerous actions.Jan 12, 2015 · What is PHP.C99? C99 is a very popular PHP based web-shell. There are numerous C99 variants which infect vulnerable web application to give hackers a GUI. The shell lets the attacker take control of the server and also browse the file system, upload, edit, delete, view files and even change file permissions amongst other dangerous actions. Mar 4, 2015 · Analysis. PHP/c99shell or simply c99shell should be well known by now - it is a PHP backdoor that provides a lot of functionality, for example: run shell commands; download/upload files from and to the server (FTP functionality); full access to all files on the hard disk; self-delete functionality. ... In short, it can pretty much do everything ... C99.php Shell - Authentication Bypass Vulnerability 2014-07-10T00:00:00 Description. Exploit for php platform in category web applications Products. Security ...R57, Shell, c99, Safe, Shell.rar, c99.php, sadrazam shell, r00t shell, sadrazam.rar, R57.php, Safe0ver Bypass Shell.rar, exploit, r57shell.net Öncelikle bu sheller pek bir hacker tarafında bulunan sheller değildir.Özel kodlanmış c99 shelldir.Bu private c99 shell ile sunucudaki sitelere rahat bir şekilde girebilirsiniz.Düzenleme silme işlemlerini diğer c99 shelle göre daha rahat uyguluyabilirsiniz.Komut işlemleri diğer c99 shell gibidir. 18 commits Failed to load latest commit information. LICENSE README.md c99shell.php c99shell.zip README.md C99 WebShell with PHP7 and MySQL Support PHP 7 and safe-build Update of the popular C99 variant of PHP Shell with MySQL support (extension of https://github.com/KaizenLouie/C99Shell-PHP7 ). قذيفة c99 حوالي 1500 خطوط طويلة ، وبعض السمات الخاصة به تشمل إظهار تدابير الأمن قد تستخدم خادم الويب ، عارض ملف لديه أذونات ، وهو المكان الذي يمكن ان تعمل المهاجم رمز php مخصص (php البرمجيات الخبيثة ...safe mode bypass root exploits shell archive.r57 c99 alfa wso php 5 6 7 8 shell mini asp aspx symlink b374k adminer upload marijuana txt rar download.-C99(previously known as C9X) is an informal name for '''ISO/IEC 9899:1999, a past version of the C programming language standard. It extends the previous version with new features for the language and the standard library, and helps implementations make better use of available computer hardware, such as the IEEE 754-1985 arithmetic, and.c99는 ... PHP Obfuscator; Base64 Tools Base64 Encoder Base64 Decoder. UD64 Decoder; Videos; Contact; WHMCS Killer v4.1. DOWNLOAD RAR FILE » ...About C99Shell. An excellent example of a web shell is the c99 variant, which is a PHP shell (most of them calls it malware) often uploaded to a vulnerable web application to give hackers an interface..