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Let us take for example John_The_Ripper, who also functions on Windows. (http://www.openwall.com/john/) Once the software installed, type the following commands (in this example, the dictionary and passwd files are on a disk): john -test (to see if john is functioning correctly) john -single a:\passwd (john's quick method of cracking a password) john -show a:\passwd (can visualize cracked passwords) john -w:a:\dico.txt a:\passwd (attack with dictionary) john -i a:\passwd (brute force attack) The Hackademy DMP -174/209- SYSDREAM
C) Authentication service One of the ways of entering a server is to use cracking on an authentication service remotely accessible. To crack a site, you can use software such as WebCrack which enables you to carry out a dictionary attack on a page using HTTP authentication. In “Target URL”, you must put the target URL you wish to crack. In our example, we try to crack various services, such as FTP, POP3, Telnet, SMB, etc... The options are roughly the same as for the previous software: Service Options Connection Options Target : Target IP Type : Type of services (FTP,Telnet,etc...) Port : Target port Connections : Number of simultaneous connections Timeout : Timeout length of time Proxy : To use a proxy (see further on in the course) Depending on the type of services selected, you will have various options in this section. Authentication Options Pass Mode : type of attack (dictionary, hybrid, brute force) The Hackademy DMP -175/209- 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
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Third step Illustration 3: ACK To c
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The methodology of this type of att
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The case of the UDP protocol Unlike
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nc -l -v -n -p 887 Injection of com
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Let's try to connect again from mac
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We can see that Ethereal has seen i
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Conclusion The covert channel princ
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It is the IP protocol that is going
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We will simultaneously launch the p
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5.Connections Hijacking We are goin
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Let us now display the contents of
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B) DNS hijacking The DNS protocol i
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ssh2 protection The server's public
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B) SSL The SSL protocol functions w
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Recent viruses use the resources of
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1.Site Mapping The first thing a ha
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Scan_web.php Scan_web.php is a PHP
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The phpinfo() function gives the ha
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ack to an error message */ if ($ok
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System() Function The System() func
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Uploading via PHP Quite often, one
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inc.php file page1.php file By ty
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There are other functions of the sa
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i=0; j=0; while (data[i] != '=') {
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system("/usr/bin/sendmail -t test@t
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In all cases, it is also important
Page 123 and 124: It is therefore vital to understand
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
Page 173: B) The Unix passwd file On Unix sys
Page 177 and 178: The first thing to do is to create
Page 179 and 180: B) Backdoor kernel Backdoor kernels
Page 181 and 182: CHAPTER VII GENERIC SECURITY PROCED
Page 183 and 184: Configure snort so that it can stor
Page 185 and 186: Pmon NT Pmon is a process monitorin
Page 187 and 188: Here is a simple scenario. Let us t
Page 189 and 190: Step 2 : Encoding and signing (PGP)
Page 191 and 192: 12.You can choose a separate Signat
Page 193 and 194: B) Cryptography of hard drives Wind
Page 195 and 196: The first time this operation is do
Page 197 and 198: Integrity controller on Linux There
Page 199 and 200: There are three protection levels:
Page 201 and 202: "Program control" Section The “pr
Page 203 and 204: The rules take the following values
Page 205 and 206: 7.VPN What is a Virtual Private Net
Page 207 and 208: Contact 1 Villa du clos de Malevart
Page 209: Created by trainers from The Hackad
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