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There are however tools that can scan, with this same method, all the known cgis that can be present on a web server: these are CGI vulnerability scanners. There are some on both Windows and Linux. For Windows, N-STEALTH is probably the best choice, as all is needed is to be given as an argument is the remote system's address in the host name: As for Whisker, it is a scanner that can be used on Linux in command line: ./whisker -h host : simply scans the designated host Here are the other interesting options: -H : scan all hosts listed in a file -p : specify a port other than port 80 -i : whisker tries to use the information already obtained -v : whisker displays all the information of the scan -l : log the results in a file -a : use of a login list if the server does not authorize a non authenticated access -p : use of a password list if the server does not authorize a non authenticated access The Hackademy DMP -122/209- SYSDREAM
It is therefore vital to understand that no matter how well a system is configurated at the applicative level, it can become a real strainer if a CGI program is present on the website. So extra attention has to be paid to the program codes as well as to how they are used. 4.SQL Injection SQL injection is a method that can modify an SQL request to bypass authentication, recover data or delete an SQL database. In the following examples, we will use PHP and a MySQL type database. These examples also apply to other dynamic languages (e.g. ASP) and other databases (e.g. Oracle, PostGre, etc...). For a start, we are going to see how a hacker could bypass an authentication by using the SQL injection and without knowing the valid login/password. This vulnerability can be used only if the server (or script) does not filter apostrophes (magic_quotes_gpc=Off) So to test this script you will need a HTTP server with PHP and Mysql. But you will also need to first create a table in the database with 2 fields (login and pass). SQL request to create the table: # # Table structure for table `writers` # CREATE TABLE `writers` ( ìd` int(10) NOT NULL auto_increment, ùsername` varchar(25) NOT NULL default '', `password` varchar(25) NOT NULL default '', PRIMARY KEY (ìd`) ) TYPE=MyISAM AUTO_INCREMENT=2 ; # # Dumping data for table `writers` # INSERT INTO `writers` VALUES (1, 'admin', 'mypass'); The Hackademy DMP -123/209- SYSDREAM
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Hack security “pro”
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Authors For their contribution to t
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Chapter IV: Web Vulnerabilities....
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INTRODUCTION TO TCP/IP NETWORKS Net
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In case of reception, each layer wi
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ARP heading: The Hackademy DMP -11/
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Version: 4 bits. The version field
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TCP header: Source Port: 16 bits. T
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TCP/UDP Port Notions: Multiplexing/
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Start the MS-DOS control interface
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CHAPTER I INFORMATION ACQUISITION T
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expires: 2005-10-28 11:28:29 create
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In the answer field you will find:
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nmap -sP 192.168.124.0/24 Starting
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C) Fingerprinting the system The nm
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It is also possible to specify seve
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SMTP : Simple Mail Transfer Protoco
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SNMP : Simple Network Management Pr
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Here is a scan report obtained with
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# nmap 3.50 scan initiated Wed May
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CHAPTER II CLIENT VULNERABILITIES T
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File viruses: These viruses attack
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Retroviruses are a bit more aggress
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However, do check in the start file
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Creating a hidden gateway : But the
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infallible. It consists in associat
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DOS commands if conditional pluggin
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Each one of these zones can be conf
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The javascript code destined to dow
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The wizard will ask you the locatio
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CHAPTER III NETWORKS VULNERABILITIE
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Here, the connection between the ro
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Using the "Follow TCP Stream" optio
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You have just created a new filter.
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This handshake takes place as follo
Page 71 and 72: Third step Illustration 3: ACK To c
Page 73 and 74: The methodology of this type of att
Page 75 and 76: The case of the UDP protocol Unlike
Page 77 and 78: nc -l -v -n -p 887 Injection of com
Page 79 and 80: Let's try to connect again from mac
Page 81 and 82: We can see that Ethereal has seen i
Page 83 and 84: Conclusion The covert channel princ
Page 85 and 86: It is the IP protocol that is going
Page 87 and 88: We will simultaneously launch the p
Page 89 and 90: 5.Connections Hijacking We are goin
Page 91 and 92: Let us now display the contents of
Page 93 and 94: B) DNS hijacking The DNS protocol i
Page 95 and 96: ssh2 protection The server's public
Page 97 and 98: B) SSL The SSL protocol functions w
Page 99 and 100: Recent viruses use the resources of
Page 101 and 102: 1.Site Mapping The first thing a ha
Page 103 and 104: Scan_web.php Scan_web.php is a PHP
Page 105 and 106: The phpinfo() function gives the ha
Page 107 and 108: ack to an error message */ if ($ok
Page 109 and 110: System() Function The System() func
Page 111 and 112: Uploading via PHP Quite often, one
Page 113 and 114: inc.php file page1.php file By ty
Page 115 and 116: There are other functions of the sa
Page 117 and 118: i=0; j=0; while (data[i] != '=') {
Page 119 and 120: system("/usr/bin/sendmail -t test@t
Page 121: In all cases, it is also important
Page 125 and 126: The error means that the SQL reques
Page 127 and 128: } else{ } $query = "UPDATE users SE
Page 129 and 130: And here is the result: We are now
Page 131 and 132: We can see that CrashFr is now in b
Page 133 and 134: Once the client has entered his pse
Page 135 and 136: CHAPTER V APPLICATION VULNERABILITI
Page 137 and 138: 2.Buffer Overflow Buffer overflow t
Page 139 and 140: xdream@Laptop:/$ readelf -a /bin/ls
Page 141 and 142: A few assembler notions Let us see
Page 143 and 144: Let us study the representation of
Page 145 and 146: The program segfaulted when trying
Page 147 and 148: We can determine that at address 0x
Page 149 and 150: The we can look in libc6 for the ad
Page 151 and 152: We can also see in the sources a ca
Page 153 and 154: 3. String Format Presentation Strin
Page 155 and 156: So when the '%n' indicator is encou
Page 157 and 158: Using dtors. bash# objdump -s -j .d
Page 159 and 160: Security The only solution here is
Page 161 and 162: This program is “suidroot”, whi
Page 163 and 164: } } printf("Opening of file authori
Page 165 and 166: } flock(fd, LOCK_UN); //Closing of
Page 167 and 168: 1.Authentication Brute force In thi
Page 169 and 170: Hybrid attack T launch a hybrid att
Page 171 and 172: LC3 offers 4 methods. 1. From the l
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B) The Unix passwd file On Unix sys
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C) Authentication service One of th
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The first thing to do is to create
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B) Backdoor kernel Backdoor kernels
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CHAPTER VII GENERIC SECURITY PROCED
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Configure snort so that it can stor
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Pmon NT Pmon is a process monitorin
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Here is a simple scenario. Let us t
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Step 2 : Encoding and signing (PGP)
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12.You can choose a separate Signat
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B) Cryptography of hard drives Wind
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The first time this operation is do
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Integrity controller on Linux There
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There are three protection levels:
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"Program control" Section The “pr
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The rules take the following values
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7.VPN What is a Virtual Private Net
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Contact 1 Villa du clos de Malevart
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Created by trainers from The Hackad
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