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Shellcode Georgia Tech ECE6612 Computer Network Security Reference:
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Usually defined by rule and signature criteria. Configured to ... API for exploit coders. Filter for kiddie lusers. Black box. Shellcode can be variable size ...
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Title: Man in the middle attacks Last modified by: ALoR Created Date: 6/2/2002 1:31:47 PM Document presentation format: Presentazione su schermo Other titles
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We will count bits from bit 0 onwards. Least significant bit is on the right ... registers : 16 bits denoting if that registered should be loaded/stored or not ...
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Due metodi usati dal kernel di Linux per. implementare system call: lcall7 ... sono implementate in modo diverso dal. kernel (socket related 'syscall' sono ...
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... dll when processing directory traversal character sequence in ... Return address overwritten with address of shellcode. Reverse engineering the patch ...
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Stack Based Buffer Overflows Table of ... env[0] env[1] unsigned char shellcode[] = \xeb\x18\x5f\x31\xc0\x88\x47\x07\x89\x7f\x08\x89 \x47\x0c\x8d\x57\x0c\x8d ...
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100% injection attacks (XSS,SQL,XPATH,OS CMD ...etc) come from inputs where ... strip_tags('Hello Admin! ?php /*attacker's shellcode/backdoor script ...
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GCC, NASM (if you roll your own shellcode, not covered in this presentation) ... Turn off exec-shield (e.g. Fedora Core 3) # echo '0' /proc/sys/kernel/exec-shield ...
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In C, can define a function with a variable number of arguments ... with the address of shellcode because 3 bits are clobbered by type information ...
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( 2/5) 'Tunneling Audio, Video, and SSH over DNS' Dan Kaminsky presented this in 2004 ... No file created on the system (memory resident) ...
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Anti-virus industry is active in this area. 6. Motivation. 710 new families. 40,000 new variants. Family and variant defined in ad-hoc fashion...
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Finding Diversity in Remote Code Injection Exploits University of California, San Diego Justin Ma, Stefan Savage, Geoffrey M. Voelker and Microsoft Research
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Smashing the Stack for Fun and Profit Review: Process memory organization The problem: Buffer overflows How to exploit the problem Implementing the Exploit
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Exploiting Buffer Overflows on AIX/PowerPC HP-UX/PA-RISC Solaris/SPARC Buffer Overflow Buffer overflow is a famous/infamous hacking technique in computer security.
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author: 'Web Hacking - Attacks and Defense' # who am i ... Client-side exploits are becoming the rage. ActiveX components. Media handlers / libraries. ...
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TPM Technical Presentation Milestone Protection Mechanisms against Software Exploitation Joseph Hong 2B Software Engineering University of Waterloo
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Web Security Adam C. Champion and Dong Xuan CSE 4471: Information Security Summary Web based on plaintext HTTP protocol (stateless) Web security threats include ...
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Exploiting Software: How To Break Code Seminario originariamente preparato da Nicola Bonelli Angelo Dell'Aera
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March 22, 2005 - 19. Conclusion. Follow 'Gera's Insecure Programming by example': http://community.corest.com/~gera/InsecureProgramming ...
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160 exploits, 77 payloads, 13 encoders. Brand new 3.0 beta1. Complete rewrite in Ruby ... Payload Encoders. Example: Alpha2 encoding ...
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'ret addr' guessing (1) There are no efficient algorithms allowing to blindly find. out the 'ret addr', even if there exist few techniques that ...
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... RDA bar offset fisso offset variabile buf[4] buf[0] a esp ret addr b offset (8) high low code[] = \xeb\x2a\x5f\xc6\x47\x07\x00\x89\x7f\x08\xc7\x47 ; ...
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Internet Explorer Exploit Christian O. Andersson Jonas Stiborg And n What we wanted to do Real attack on a real program Internet Explorer is one of the ...
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Breaking Mac OS X By Neil Archibald and Ilja van Sprundel Introduction Who am I? Neil Archibald, Senior Security Researcher @ Suresec Ltd Interested in Mac OSX sys ...
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Internet Explorer Exploit Christian O. Andersson Jonas Stiborg And n What we wanted to do Real attack on a real program Internet Explorer is one of the ...
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A buffer overflow is a condition in a program whereby a function attempts to ... The data immediately following the buffer gets corrupted. ...
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Buffer overflow conditions are caused by missed boundary checks of user-supplied ... Buffer overflow exploitations on non-intel platforms are nearly as trivial as on ...
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RealServer, IIS, CDE, SQL Server 2000, WebSphere, Solaris, ... MOSDEF (mose-def) is short for 'Most Definately' ... Confuses 'pop a shell' with the true mission ...
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If the data size is not checked, return pointer can be overwritten by user data ... is overwritten. IDS use signature matching techniques to detect. A sequence ...
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Buffer Overflow. Prabhaker Mateti. Wright State University. example3.c ... memory 89ABCDEF0123456789AB CDEF 0123 4567 89AB CDEF memory. buffer sfp ret a b c ...
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No necesita cuenta de usuario en la m quina a asaltar como la necesitar a una ... Asocia una 'shell' de commandos interactiva a ese puerto. Con un poco de suerte ...
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Dump of assembler code for function main: 0x0040107f main 0 : push ëp ... Dump all the bytes to the screen as hex: (gdb) x/61bx main 3 ...
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Evil.DLL. Application ... Registry Evil ... names whose binaries reside in a non-standard location are the staples of camouflage. ...
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Microsoft C/C Optimizing Compiler and Linker. http://msdn.microsoft.com ... http://www.microsoft.com/whdc/devtools/debugging/installx86.mspx. Active Perl ...
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Windows CE is a very popular embedded operating system for PDAs and mobiles ... A puzzled example. load a encoded byte and store it after decoded ...
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Source: CVE http://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=buffer overflow. 4 ... CA-2001-19 'Code Red' Worm Exploiting Buffer Overflow In IIS Indexing Service DLL ...
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CMSC 414 Computer and Network Security Lecture 21 Jonathan Katz
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So now that we've messed up. the program's memory, what can. we do? ... The problem is, we only have idea where it will end up in memory. ...
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... some data which determines the flow of the program, which can be overwritten. ... Can be overwritten similarly to GOT entries ...
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Argos Emulator. Georgios Portokalidis. Asia Slowinska. Herbert Bos. Vrije Universiteit Amsterdam ... Exec(Netstat or OpenPorts) Connect(argos host) Send(info) ...
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- : : 401 Email: cychen07@nuk.edu.tw :100/8/30
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Title: PowerPoint Presentation Created Date: 1/1/1601 12:00:00 AM Document presentation format: On-screen Show (4:3) Other titles: Arial Wingdings Default Design ...
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strcpy(buf, argv[1]); return 1; RET2RET. Disassembly. Dump of assembler code for function main: ... retaddr = proc_getstackaddr(atoi(argv[1])); badpkt.retaddr ...
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Push ebp : saves previous frame pointer. Copy sp into fp : ebp = esp. The new AR's frame pointer will be the previous value of the stack pointer ...
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Title: Reliable Windows Heap Exploits Author: Ohorovitz Last modified by: blah Created Date: 3/25/2004 6:59:27 AM Document presentation format: On-screen Show
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Morris Worm. Took down most of Internet in 1988. Exploited a buffer overflow in fingerd. ... name[0] = '/bin/sh'; name[1] = 0x0; execve(name[0], name, 0x0) ...
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Stored in code as binary string. Configuration done via offsets. 15 ... Coders race to be the first. Old exploits are less useful. Result: lots of broken code ...
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Hack in the Box 2003. Anatomy of an Exploit. 9 #2: Anatomy of an Exploit ... Hack in the Box 2003. Common Exploit Problems. 23 #3: Common Exploit Problems ...
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Unix Worm. Hard coded target scanning. Apache chunked encoding vulnerability ... Worm Plant. Decode, Compile w/ gcc and Run (A) /tmp/.bugtraq ...
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We are going to use both symmetric-key and public-key techniques in this project, ... It's been estimated that over 50% of vulnerabilities exploited in the last 10 ...
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Your host does not need to be as famous as yahoo or ebay to be targeted ... run sniffer to collect user password information. hack or attack other network ...
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Small programs that make copies of themselves, usually without ... Anna Kournikova worm appears. Sircam spreads through unprotected network shares and email ...
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Speaker : E-mail: dou@wns.ice.cycu.edu.tw * WNS Lab * ...
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