key$ AcceptKey = $ this-> encry ($ req );$ Upgrade = "HTTP/1.1 101 Switching Protocols \ r \ n "."Upgrade: websocket \ r \ n "."Connection: Upgrade \ r \ n "."Sec-WebSocket-Accept:". $ acceptKey. "\ r \ n "."\ R \ n ";
// Write the socketSocket_write (socket, $ upgrade. chr (0), strlen ($ upgrade. chr (0 )));// The handshake is successfully marked, and the data received next time is in the data frame format.$ This-> handshake = true;}
Note that each request and the corresponding format have an
During attacks, hackers can disguise themselves and bypass IDS detection. This is mainly used for IDS pattern matching to avoid IDS monitoring. This article describes how to bypass IDS detection for HTTP requests.
IDS is used by many enterprises as an enterprise security protection system. However, enterprises that install IDS cannot be completely at ease. With the development of hacking technology, many hackers can bypass IDS detection in various ways to launch attacks on enterprises. This art
thing.First step: Observe browser behavior using FiddlerRun the browser under the condition of Fiddler, enter the URL of the Web http://www.zhihu.com and then you can see the connection information captured in Fiddler. Select a 200 connection on the left, open the inspactors perspective on the right, above is the request message information for the connection, and below is the response message information.Where the Raw tag is the original text of the display message. The response message below
will replace the space with % 20.
The corresponding decoding functions are urldecode and rawurldecode. Refer to the instructions on the official website. Any % ##, plus sign ('+') in the encoded string given by urldecode is decoded into a space character; the semicolon (%) in the rawurldecode decoding character string is followed by two hexadecimal values. There are two differences: first, urldecode decoding decodes any two characters after the perce
data in the memory and save it.I am using PHP shield Var 1.54 for encryption. I searched for a decryption tool on the Internet. After practice, I can decrypt it successfully.However, this tool itself is also encrypted, No matter what encryption it is, as a result.Create a file named "dec. php", where "decryption. PHP" is the encrypted form of php shield Var 1.54 decryption tool.Require_once 'decryption. php ';Echo 'OK ';?>This is simpler. You can directly access http: // localhost/DebugPHP/dec.
for one sentence 1
2. Run the base64 decoded z0 using the eval method. The decoded z0 is displayed as follows:
@ Ini_set ("display_errors", "0"); @ set_time_limit (0); @ set_magic_quotes_runtime (0); echo ("-> | ");; $ f = base64_decode ($ _ POST ["z1"]); $ c = base64_decode ($ _ POST ["z2"]); $ c = str_replace ("\ r ", "", $ c); $ c = str_replace ("\ n", "", $ c); $ buf = ""; for ($ I = 0; $ I
3. Cont
Cosine Function
I have seen several articles written in foreign countries. I still have a Paper. I forgot where to put it.And then see the ghost: http://www.bkjia.com/Article/201003/45234.htmlMr_xhming of: http://www.bkjia.com/Article/201003/45216.html
I have already described the application of bar code attacks in the xeye group some time ago.To be honest, there is almost no novelty except the bar code itself. The input here is the bar code reader. The entered content is a bar code, which is
cookies for injection.Let's take a look at the implementation of the 1st types. Because the program accepts the request parameters. servervariables, haha, this method is not exactly the same as our usual request, because the data it receives will be unblocked and accepted, for example, we passed selec % 74, here, the sss will be selec % 74, rather than the decoded select string. The current judgment statement will bypass the detection because of sele
, Intent data) { if(ResultCode = = Result_ok Requestcode = =capture_pic) {Options Options=NewOptions (); Options.injustdecodebounds=true;//set decode just to get the width and height values of the picture, instead of actually getting the pictureBitmap Bitmap = Bitmapfactory.decodefile (Imagefilepath, Options);//after decoding can options.outwidth and options.outheight to get the size of the picture intWidthRatio = (int) Math.ceil (options.outwidth/width);//gets the compression
stored in the database, either write to the SQL garbled, or stored in the database has become garbled. Here are a few things to note:1. When connecting to the database, add Useunicode=truecharacterencoding=utf8 in Jdbc_url, which specifies the encoding and decoding of the characters.Jdbc:mysql://localhost:3307/dbbasename?useunicode=truecharacterencoding=utf8When you need to store data to the database, the data is decoded into bytecode using the UTF-8
The BOM header is a UTF-8 to tell the editor: I'm UTF8 encoded. Its code is xEFxBBxBF, but PHP did not consider the BOM header at the beginning of its design, so it is easy to encounter problems during codec, such as problems encountered today, json_decode, when the decoded string has a BOM header, json_decode fails to be parsed and NULL is returned. (Why
The BOM header is a UTF-8 to tell the editor: I'm UTF8 encoded. Its Encoding is \ xEF \ xBB \ xB
program uses the ROL3 algorithm to decode two "Files":. en_icon and DS_Stores; and then runs these files.
#!bash$file EmptyApplicationEmptyApplication: Mach-O universal binary with 2 architecturesEmptyApplication (for architecture x86_64): Mach-O 64-bit executable x86_64EmptyApplication (for architecture i386): Mach-O executable i386
In the obfuscation algorithm, EmptyApplication uses "xc" as the encryption key of the XOR algorithm, and obfuscated the strings in binary. The following is a simpl
Use Radare2 and Ruby to develop a malware configuration parser
Radare2 (an open-source reverse engineering platform) has received a lot of attention recently. Here I not only want to browse some documents, but also try to use Radare to traverse some code.
In 2014, GData released a White Paper on "TooHash action" and introduced a malware called "Cohhoc. Here, I am not going to dig into cohhoc. I can decode the C2 address in two steps. The URL is stored as a base64 string (bitshifted OR 'd ). D
} -}2. Imagerequest is used to request a bitmap bitmap based on a URL, including attributesMlistene: Listener to receive decoded bitmapMmaxwidth: Decodes the maximum width of the bitmap,Mmaxheight: Decoding the maximum height of a bitmapIf Mmaxwidth,mmaxheight is 0, the original size of the bitmap is maintained, and if one of them is not 0, it is decoded according to the aspect ratio of the origina
In order to avoid transmitting HTTP content in plaintext, it can be transmitted by Base64 encoding, then decoded by the receiver, and also facilitates the string transmission of 2 binary data.For iOS, Google offers a great tool class for Base64 codecs, and of course, it can be done with OpenSSL, but it's relative.Say more trouble. Google has provided 3 of files is enough.The official website address is:http://code.google.com/p/google-toolbox-for-mac/T
Since July August this year, JPEG decoding was completed, but it has been very unstable. If you modify any part of the code, decoding may fail. At first I thought it was a stack problem, or there are invalid pointers later, but no results are returned. In the end, I can only doubt the compiler. In addition, After compiling with rvds4.0 in my same program, JPEG decoding always waits for timeout, but the header can be decoded, after obtaining the releva
This is a very simple small program, but it has also made me a beginner for several days. It is an entry point. I will summarize the learning process and hope it will help beginners.
First, let the source code run. See the FFMPEG provides source code api-example.c, a good entry program, although the video codec is very smooth, but the source code provides audio decoding is problematic, MP2 files cannot be properly decoded, this is frustrating, especia
urlencode for sending. --- this is a convenient method.
For example, you can add a text character after the URL of a GET request:
The request is as follows:
http://myurl.com?prop1=a0~%60!%40%23%24%25%5E%26*()-_%2B%3D%7B%7D%5B%5D%7C%5C%3A%3B%22'%2C.%3F%2Fprop2=xprop2=y
The server will be decoded as follows through uricomponent:
prop1 a0~`!@#$%^*()-_+={}[]|/:;"',.?/prop2 xprop2 y
You can also send the following content in the same post request:
static void main (){Unsafe{Int A = 100;Int * P;P = ;Console. writeline ("address of a is {0}", (INT) );Console. writeline ("P now points to {0}", (INT) P );Console. writeline ("Address of the pointer Variable P is {0}", (INT) P );}}}Run the above code and we will get the output shown below. You will also get some similar output. Note the use of the unsafe keyword here.Address of A is 1244312P now points to 1244312Address of the pointer Variable P is 12443081244308 is the address of the pointe
Generally, garbled characters may occur when Vim opens a Chinese file. The reason is complicated and it is not so cool. Direct SolutionSet fileencoding = gb18030Set fileencodings = UTF-8, gb18030, UTF-16, big5Do you want to see the reason for this setting? Continue. The following is widely used in the Internet
The encoding in VIM is mainly related to three parameters:ENC (encoding), fenc (fileencoding) and fencs (fileencodings)
FencIt is the encoding of the current file, that is, a file corr
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