The data, tools, and procedures which, when applied to a specific vulnerability, predictably violate the security design of a system.

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0
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1answer
24 views

Exploiting snmp private string [on hold]

Like many others I know about gathering info from snmp read only strings, and that with some tools we can grab the banner, but there is a private string, too, with READ WRITE authentication. Isn't ...
0
votes
2answers
45 views

Questions regarding Bad USB exploit

I own a Netbook and my external DVD Drive is possibly infected with Bad USB. If i install Ubuntu using this infected DVD drive could my system be taken over during installation process or later when ...
0
votes
1answer
28 views

understanding the vulnerability to write a snort rule [on hold]

I'm trying to write a snort rule for this vulnerability; http://www.exploit-db.com/exploits/36360/ however for me to be able to write a good snort rule I need to understand how the software is ...
0
votes
1answer
49 views

Java desktop app vs web service [on hold]

I currently have a desktop app written in Java (Swing) which talks to a C-based backend over SSL. I am trying to understand the pros/con from a security perspective to move to a web service model. ...
1
vote
2answers
37 views

Meterpreter and staged payloads

So starting with the absolute basics - an exploit is the means used to gain access to a vulnerable system and a payload is the actual program/shellcode used to fulfill attacker's intentions A staged ...
5
votes
1answer
51 views

Return oriented programming without int 0x80

I have a program with a stack based buffer overflow. It is running PIE with ASLR and DEP, however there is a section of executable code that is at a fixed location. However, this region does not ...
2
votes
1answer
58 views

exploiting Heap Overflow in gdb segfaults

I have been trying to exploit the heap overflow vulnerability for the program below, I am running Linux 14.04. #include <stdio.h> #include <string.h> #include <stdlib.h> int n = 5; ...
3
votes
2answers
43 views

Are there methods for determining the exploitability of bugs, after a crash is found in fuzzing?

I have found this, https://msdn.microsoft.com/en-us/magazine/cc163311.aspx It says that only "a full root-cause analysis can ensure that you have correctly diagnosed whether a given crash is ...
10
votes
9answers
3k views

Can an old operating system webserver be made secure?

I have an old laptop with far too little RAM to run Linux (including specialty distributions). It can however run Windows 98 just fine, and I'm looking into turning it into a tiny retro webserver. Is ...
8
votes
3answers
577 views

Evading IDS in exploit development

In the context of buffer overflow exploit development, I was asked: Discuss how your exploit may be modified to evade an Intrusion Detection System. I'm not asking for my homework to be done, but ...
1
vote
0answers
27 views

ROP attack on x64, zero bytes trouble

I have found ROP tutorial on x86. Now i try to exploit simple buffer overflow case on x64: int main(int argc, char **argv) { char buf[10]; strcpy(buf, argv[1]); ... } I figured out, ...
1
vote
0answers
14 views

Possible exploit while MPLS parsing with Bottom of Stack bit

My current task to parse MPLS label in a packet and store them in to a list. When I check packets with MPLS: One can understand it is the last MPLS header by checking Bottom of Stack bit. If ...
6
votes
3answers
2k views

Setting up a security CTF server

I'm looking for resources and information from people who have experience running hacking capture-the-flag challenges. To sum it all up in a simple one-sentence question: How do you set up a server ...
2
votes
1answer
57 views

How to find stack pointer for overflow bug?

I've read that stack usually starts in same address so the attacker may guess the starting point of the buffer to overflow. This is necessary to know this address to make the malicious code run. I ...
1
vote
0answers
51 views

Bash Shellshock

I am trying to find out if my devices are vulnerable to bash shellshock. I have run the commands found on https://shellshocker.net. It seems my devices are both susceptible to only one of the ...
1
vote
1answer
69 views

Why should we focus on protecting root access on a home computer?

I understand why root access should be protected in general, especially in the context of a server environment. An unknown party can essentially control everything you do on a computer remotely ...
1
vote
2answers
93 views

How do I prevent tampering with form submission data, and changing the details for any account?

Although this is something that only employees can use, I'd like to prevent the tampering anyway. I don't like insecure code, and this is hideously insecure. Here's an example link: <a href="#' + ...
1
vote
2answers
42 views

Temporary XSS Vulnerability

I found xss on a textarea field. When you enter a character to this field it output the character on realtime so when i input the following code: <input onclick=alert(document.cookie)> there ...
4
votes
2answers
6k views

Finding environment variables with gdb, to exploit a buffer overflow

I have to exploit a very simple buffer overflow in a vulnerable C++ program for an assignment and I am not being able to find the environment variable SHELL. I have never worked with BoF before, and ...
2
votes
1answer
76 views

Resources to learn about Windows systems exploitation [closed]

I'm a beginner in penetration testing, and I'm struggling with finding decent material to learn. I used book about nmap, Metasploit, exploit writing etc..., but they contained too much information ...
-2
votes
1answer
84 views

Possible Injection to PHP PDO

Expert says that PDO is one of secure scripting from mysql injection. I have read the manual about it and do some little research. And here, I'm trying to get ID value from URL paramater, as in: ...
4
votes
1answer
78 views

Realistic: Exploiting a computer on BIOS/ hardware level in less than an hour? (Infinite preparation time)

I wonder how hard it it to infect a laptop or netbook in 60 minutes or less in a way the victim cannot easily clean their machine by wiping hard disk drives. Let's assume the following: The ...
2
votes
1answer
84 views

SMB/CIFS shares on HP-UX vulnerabilities

So, I've run an unauthenticated Nessus scan against a critical piece of infrastructure as part of a pen-test but I'm getting back some weird stuff and i can't seem to re-create the issue to ...
3
votes
2answers
131 views

Is there any danger in allowing users to host PDF/RTF/DOC files on my web server?

If I were to allow users to host arbitrary PDF/RTF/DOC files on my server all under the same name, but with different query strings would there be anything to worry about? I've heard of PDF/RTF ...
13
votes
3answers
356 views

remote desktop connection to a potentially compromised machine

I am using rdesktop client on Linux to connect to windows machines. If some of these machines were compromised by some evil malware/virus/worm/trojan, is there any way for the malware to "jump" to my ...
3
votes
2answers
1k views

Closely spaced failed logins in auth.log

I have a raspberry-pi (running GNU/Linux) and I recently allowed my router to forward port 22 (ssh) to the raspberry-pi so that I could log in while away from home. I then noticed a bunch of ...
5
votes
3answers
309 views

CTF competitions/challenges that are Windows based?

I've been messing about in CTF's for a while and I also do pen-testing professionally, what i've noticed is a distinct lack of CTF competitions using windows environments. This is in stark contrast ...
2
votes
2answers
130 views

Steps after getting hit with malware or browser exploits on Xubuntu

Well, today I was browsing the internet and I suddenly got redirected to a chinese hosted malware site and firefox started going crazy. I checked the url on virustotal with my phone and it found other ...
2
votes
2answers
416 views

Is it possible to exploit a file upload with whitelist and filename hashing?

I have a small web application. Because it is necessary to upload some files I check the file extensions with a whitelist (tgz, jpg, png, pdf, zip, rar, txt, gif, py, c, rb). In addition to that, I ...
14
votes
7answers
753 views

How is it possible to embed executable code in an image

I was reading up on FireEye and came across this NYTimes article detailing a Skype chat where an image was sent that was laden with malware: Quote: To gain access to information on the ...
1
vote
2answers
80 views

How to analyze spam email URLs to detect exploits?

I'm receiving spam emails that, looking at the email headers, appear to be coming from a variety of computers around the planet. They're always the same type of email that contains invalid URLs inside ...
0
votes
1answer
40 views

Collecting Information from CVE and MSB to write proof-of-concept

I am currently interested in knowing how to write some proof-of-concept code for recent vulnerabilities that are released every month by the CVE and Microsoft Security Bulletin. These websites list ...
1
vote
1answer
45 views

Are Sun/Oracle's SPARC processors invulnerable to buffer overrun exploits?

We all use Intel architectures these days, in small part because Oracle has totally dropped the ball regarding SPARC CPU development. But with so many now saying that protection against viruses is ...
0
votes
0answers
126 views

Exploiting buffer overflow

When I download a copy of a vulnerable program and try to exploit it by buffer overflow (any internal function calling as a payload), it works. However, when I made a same type of vulnerable program ...
2
votes
1answer
575 views

Examples for practicing reverse engineering/disassembly of win32 .executables

I remember back in the day, there used to be a website where users would post hackits in the form of win32 exes for users to crack. Usually the goal was to defeat some sort of DRM, such as a nag ...
4
votes
1answer
149 views

How did GamerFood hack the Starcraft IEM Taipei Tournament? [closed]

During the recently completed professional Starcraft tournament, Intel Extreme Masters (IEM) Taipei 2015, the notorious cheat software company Team Gamer Food hacked the cast somehow. How did they do ...
21
votes
3answers
2k views

Linux-based Turla trojan

There are several articles describing the newly discovered Linux-based Turla trojan. But basically, all these articles repeat the same, very limited, information. Can anybody provide more details, ...
3
votes
1answer
111 views

msfvenom -b flag not working?

When using msfvenom, I am under the assumption that the following syntax should give me shellcode without \x00 \x0a \x0d or \x40, because of the -b option msfvenom -p windows/shell/bind_tcp -b ...
-1
votes
1answer
112 views

Hack to change the webpage of a website? [closed]

Recently, there is a website by Malaysia Airline got hacked and their main page has been defaced, below is a link to that article ...
8
votes
2answers
147 views

concrete real-life examples where grsecurity prevented an exploit

From theoretical point of view, grsecurity kernel patch looks like a great hardening tool. Most importantly, PaX seems like a good idea. Do these theoretical advantages have indeed practical effect ...
0
votes
1answer
55 views

What could be the possible exploit for android adware vulnerability?

I have read about the adware vulnerability here. An adware is a software that automatically displays or downloads advertising material like banners or pop-ups when a user is online. I have seen many ...
5
votes
2answers
350 views

On Hawkes' technique to bypass canaries

I found this reference to bypass canaries: http://sota.gen.nz/hawkes_openbsd.pdf It recommends to brute force the canary byte-for-byte. I don't understand how this works: "Technique is to brute force ...
4
votes
2answers
109 views

find if 0-day flash bug was exploited (on a particular machine)

There have been several critical 0-day exploits in the past days/weeks in Flash alone. Nobody knows how long the 0-days have been exploited, and it is reasonable to expect that there are 0-days being ...
1
vote
3answers
88 views

How to organize a CTF?

In the context of an IT event, my team would organize a CTF (Capture The Flag). About the challenges (we’re working on them). I want to have some references on the types and levels of difficulty that ...
0
votes
1answer
70 views

Are firefox bugs cross platform? [duplicate]

I use Ubuntu and last firefox version. I opened an image with firefox, and a crash occurred. Let's assume it's a crafted jpg to run an exploit, and execute arbitrary code. To sum up: (1) Firefox ...
32
votes
2answers
14k views

How do ASLR and DEP work?

How do Address Space Layout Randomisation (ASLR) and Data Execution Prevention (DEP) work, in terms of preventing vulnerabilities from being exploited? Can they be bypassed?
1
vote
0answers
48 views

Is it dangerous to append search query to the base URL?

I'm testing drupal website and I've noticed that search query gets appended to the base URL in the response, like so: query: "hey ho: there" http://www.baseurl.com/search/node/hey ho%3A there query: ...
0
votes
2answers
129 views

Bad USB and other Exploits of USB Devices

Can every USB device and most of the chips in other hardware be reprogrammed like it works with the Bad USB hack to inject malware into the operating system? For example i got a DVD burner that i ...
1
vote
2answers
81 views

Reasonable source of old proof-of-concept attacks

I am relatively new to the area of cyber security but have a reasonable knowledge of several programming languages, assembly (x86 in particular) and scripting. In light of the recent Shellshock and ...
0
votes
1answer
24 views

Getting a DEP exception when trying to call SetProcessDEPException(false)

I'm demonstrating an exploit for an old app. On Windows XP SP3 32bit (EN), the address of SetProcessDEPPolicy() is usually 0x7C8622A4. I have that version of Windows (in English as well) and I've ...