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Everything posted by Nytro
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De la ieu pt baety: Florin Salam - Cap si pajura 2011 (Live Club One Million Timisoara) - YouTube
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dsfMrdfUfxIcvE AdfNsdOdsfNtyYfgMzOxcUasSdf.
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Sa nu va plangeti la mine ca a venit valu' de copii copaci peste voi...
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L-am oprit pe Salam ca sa ascult porcaria aia? Muie!
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In C un vector e un pointer, adresa de memorie contigua unde e memorat acel vector. Ex. char plm[13] = "Ana are mere"; plm == 0x12345678, adresa de unde incepe acel sir, adica la adresa 0x12345678 e caracterul "A", adica 65, adresa 0x12345679 corespunde lui "n" si tot asa. Tipul de date al vectorului, char, indica faptul ca fiecare element ocupa un octet pentru ca sizeof(char) este 1.
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Integer overflow - Wikipedia, the free encyclopedia
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Fals. Nu se aloca nimic pentru acel s[256], e un pointer si se vor pune pe stiva 4 octeti (respectiv 8 pentru sisteme pe 64 de biti) indiferent daca e s[1] sau s[1337]. Ii este trimis un pointer la un sir de caractere deja alocat. Practic va copia sirul "dupa" sirul existent (in memorie). Revin cu detalii mai tarziu.
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char sir[17] = "SimpleCChallange"; - Asta e const char * void fct(char s[256], int i) { - Aici e char * Nu se poate apela functia, nu se face conversia implicit.
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sizeof(char *) si sizeof(void *) depind de arhitectura procesorului, 32 de biti sau 64 de biti. sizeof(int) este cel mai des 4, dar standardul C specifica doar dimensiunea pentru char/signed char/unsigned char ca fiind 1, deci depinde de compilator.
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Ar trebui sa mearga pana la (aproximativ) 2 miliarde, apoi devine negativ. Am vazut ca e ";" dupa for, deci se va afisa (aproximativ) -2 miliarde.
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Bun, am scapat de unul, maturizati-va hackeri de carton ce sunteti. Si se muta la gunoi, asta e un gunoi, nu un "show off".
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1) Site de 2 lei 2) Nu cred ca ai avut niciun motiv, probabil e gasit cu dork 3) Nu stii SQL Injection, ai luat un link si l-ai pus in program De ce vii cu pretentia sa vezi numai comentarii ca "Esti cel mai tare, sunt fanul tau"? E normal sa comentam astfel, cu asa ceva te poti lauda prietenilor care nu stiu sa instaleze un Windows, dar noi am trecut de aceasta etapa.
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Hackers Around the World: No Flaws Escape This Georgian’s Longrifle0x
Nytro replied to r3b3l1's topic in Stiri securitate
Da, il mai vazusem pe forumuri, nu e tocmai un "zmeu". -
Te astepti sa te laude toti pentru ca ai dat un click in Havij?
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Nu stiu daca ai observat, dar acolo se genereaza un request HTTP, care se presupune a fi trimis catre un server. Ok, Denial Of Service, adica sa primesti cateva mii de request-uri nu e nimic, tu avand 3 trilioane de procesoare, da, nu este problema, dar este ce mai mult de atat. "try to execute code at 0x1111111111111111" for ($i=1; $i<8; $i++) { $payload .= "\x11"; } Asta nu spune nimic?
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Se stie din noiembrie 2011, s-a votat pe 26 ianuarie 2012, de unde stiai tu acum 7 ani de ACTA?
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In Bucuresti pula, pe Facebook ziceau ca vin 40.000, sa imi suga pula cei care ziceau ca vin si si-au facut laba pe Facebook. "Pentru cei care protesteaza de pe Facebook: MUIE specatorilor!"
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Deci care veniti? La 4:30 la Universitate, dati mesaj privat daca vreti sa ne strangem.
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Cred ca o sa ne strangem cativa, ne intalnim la Universitate, pe la 16;00-17:00. Cine vine sigur, sa imi dea un mesaj privat. Oricum, e posibil ca eu sa fiu unul cu un steag mare cu Romania pe spate. Daca aveti materiale sau puteti face rost, orice, aduceti cu voi.
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Cea mai smechera
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[h=1]As Iran Cracks Down Online, Tor Tests Undetectable Encrypted Connections[/h] Andy Greenberg, Forbes Staff [h=6]2/10/2012 @ 11:48AM[/h]Keeping secrets on the web in a country as digitally repressive as Iran isn’t easy. But as Iran tightens the screws on its Web censorship, the hackers at the anti-censorship Tor project are working on something harder: Keeping secret the act of keeping secrets. Ahead of the anniversary of Iran’s revolution Saturday, the country’s government has locked down its already-censored Internet, blocking access to many services and in some cases cutting off all encrypted traffic on the Web of the kind used by secure email, social networking and banking sites. In response, the information-freedom-focused Tor Project is testing a new idea: Encrypted connections that don’t look encrypted. To skirt the so called “deep packet inspection” filters Iran’s government has deployed to block all Secure Sockets Layer and Transport Layer Security (SSL and TLS) encryption that protesters might use to communicate privately, Tor is trying a new kind of bridge to the Web, one the group is calling “obfsproxy,” or obfuscated proxy. Tor executive director Andrew Lewman says the idea is to “make your Ferrari look like a Toyota by putting an actual Toyota shell over the Ferrari,” where the Toyota is normal communications and the Ferrari underneath is the encrypted communications. “Basically, say you want to look like an XMPP chat instead of SSL,” he writes to me, referring to a protocol for instant messaging as the decoy for the encrypted SSL communications. “Obfsproxy should start up, you choose XMPP, and obfsproxy should emulate XMPP to the point where even a sophisticated [deep packet inspection] device cannot find anything suspicious.” Lewman warns that obfsproxy is in a “super alpha” stage of development, and in its current form might only last a short time before Iran finds a way to detect the obscured encrypted communications. The tool currently only obscures SSL and TLS as the SOCKS protocol used by proxy servers, but in the future, he hopes it will be able to impersonate any sort of traffic, including HTTP or instant messages. In addition to its crackdown on encryption, sources inside Iran are reporting that the country is blocking access to sites including Gmail, Hotmail, and Yahoo! using its traditional IP blocking technology. Tor typically circumvents that censorship technique by routing Internet traffic through a series of volunteers’ computers around the world, and in recent years using a collection of more secret encrypted “bridge” connections that relay users’ traffic to that network. Between 50,000 and 60,000 users in the country use Tor daily. But the country’s efforts to block all SSL and TLS traffic put that strategy at risk. Hence the group’s efforts to prevent the government’s censors from distinguishing its encrypted traffic from normal traffic with the new obfsproxy tool. Lewman says that despite a few bugs, the early users of obfsproxy report that it’s “working well in-country.” In the mean time, Tor is looking for technically-skilled users to run obfsproxy bridges to give Iranians a path to the uncensored web. “This kind of help is not for the technically faint of heart but it’s absolutely needed for people in Iran, right now,” wrote Tor developer Jacob Appelbaum in an email to the Tor Talk mail list. Read Appelbaum’s full message asking for obfsproxy volunteers here, and read a full technical desription of how obfsproxy works here. Sursa: As Iran Cracks Down Online, Tor Tests Undetectable Encrypted Connections - Forbes
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[h=1]Eight features Windows 8 'borrowed' from Linux[/h]By Sandro Villinger, ITworld February 09, 2012, 3:24 PM — "Good artists borrow, great artists steal!" Pablo Picasso said it. So did T.S. Eliot. And, more recently, . Let's face it: If something makes sense and succeeds, it gets imitated.Though Windows 8 and Linux distributions differ greatly from each other in design, ideology and -- last but not least -- their primary audience, they're all built on the same basic principles of OS design so there's bound to be some overlap. And while Microsoft has long been accused of stealing from the open source community, according to some Linux fans, it's getting to the point where Microsoft simply appropriates good Linux features. [ FREE DOWNLOAD: Windows 8 Deep Dive Report | Windows 8: The 10 biggest problems so far ] I've been following the Windows 8 development very closely and noticed some hefty backlash on some of the features of Windows 8. This was especially true in some Linux/Windows forums and the Building 8 blog, where Sinofsky and friends write extensively about the new upcoming Windows iteration. All this fingerpointing made me curious about where some of the best new-to-Windows features in Windows 8 really came from and how Microsoft put its own spin on them (or not). [h=3]1. File copy dialogue[/h] In an effort to create more transparency, Microsoft implemented an improved copy, move, rename and delete dialog that doesn't just show the progress of each operation, but also a throughput graph and the ability to actually pause individual copy operations. Oh, did that cause a firestorm in the open source community! Pretty much the same dialogue has been part of Linux's Dolphin and Nautilus file managers -- the file transfer dialogue also lets users pause operations and view multiple copy jobs in one window. We've even got the gimmicky bandwidth graph that appears once the user hits "More details". The Microsoft twist: When there's a problem with a file operation, Windows 8 doesn't just stop the entire process but keeps these problems in the error queue. However, it's quite obvious that Microsoft took a good, hard look at the open source world here. What neither Linux nor Windows 8 have is a queue feature. Of course, you could manually pause and resume individual copy operations, but that's not helping you on a massive copy job. Users of both Windows (see the comments on this post) and Linux have been waiting for this for quite a while. [h=3]2. ISO mounting[/h] In Windows 8, Microsoft finally introduces mount ISO files. Once mounted, a new drive letter appears in Windows Explorer that represents the virtual CD/DVD ROM. And while it's a nice addition that lets users finally get rid of annoying third-party tools such as Daemon Tools, Power ISO or Virtual CloneDrive, both Linux and Mac have had this ability for quite a while. The Microsoft twist: No Linux distro does ISO mounting as easily as Windows 8, as it requires some command line trickery (or, again, third-party tools). [h=3]3. Windows To Go[/h] Windows To Go allows (enterprise) users to create a bootable Windows 8 environment on a USB 2.0/3.0 flash drive. It even supports unplugging the drive, which causes the OS to freeze momentarily until you plug the Windows To Go stick back in. Awesome. The Microsoft twist: Obviously, such "live environments" have been around for quite a while in the Linux world, but their performance was never quite up to par with a natively running OS. Since Microsoft optimized their NTFS file system for such a scenario, Windows 8 runs fluently even on USB 2.0. Upon testing Windows To Go, I found that both boot and overall speed were far superior to any Linux live distribution I have ever tested. [h=3]4. The Metro UI[/h] The basic idea for the Metro UI appeared in Media Center and Zune hardware more than 5 years ago. When you use the Metro UI for the first time, you'll see that it's a very unique way of working with a device. But Microsoft didn't pioneer the idea. Various Linux distros, Ubuntu and GNOME in particular, have tried to overhaul the user interface to fit the "one UI to rule them all" approach before Microsoft did. There's no denying that various updates to the UI of Linux, especially Ubuntu, were made specifically with tablets in mind. But even the most ardent Linux users admit that touch support could by no means be called anything other than half-baked. The Microsoft twist: Microsoft is taking a very risky step in making the new Metro UI the default view of the new OS, but it's also much more comfortable to use either with touch or a pen. [h=3]5. Social integration[/h] Linux distributions -- notably Ubuntu -- have, for a long time now, included social media integration by default. The "Me" menu, which first appeared in early alpha versions of Ubuntu 10.04, allows you to update your status to all your accounts and get important feeds directly to your desktop. And when Microsoft finally added its Tweet@Rama, Photo Picker and Socialite app to the developer preview, loyal Linux users again pointed out that this has been done before. The Microsoft twist: No twist here. Microsoft was simply late to catch on to the trend. [h=3]6. Native support for USB 3.0[/h] In their very first blog post, the Building 8 folks explained their new native USB 3.0 stack and, of course, that news was greeted with comments of the "Linux has been doing that for three years" variety. The Microsoft twist: Move along. Nothing to see here. USB 3.0 devices work pretty well with Windows 7 already since hardware manufacturers provide their own drivers. Microsoft just finally implemented an industry standard. [h=3]7. Cloud integration[/h] Both Windows 8 and Linux sport features that let you sync data with the cloud. In Ubuntu 11, the Ubuntu One service offers a free online backup service with 5 GB. If you want more storage space, there's always the option of purchasing an additional 20 GB for $2.99 a month. The Microsoft twist: Windows 8 is going to tightly integrate with SkyDrive's 25 GB online storage, which is not just for photos or music, but also allows for hosting your user account (personal settings, backgrounds, some data...) for you to log in from anywhere. Ubuntu, however, counters with their new Music Streaming service. [h=3]8. ReFS[/h] The newly introduced ReFS (Resilient File System, codenamed Protogon) is Microsoft's next-generation file system. It will first debut in Windows Server 8, but client adoption is well underway. The system itself is strikingly similar to ZFS (the Z File System) and the Linux-derived Btrfs (B-tree file system) as it also supports copy-on-write snapshots when coupled with Microsoft Storage Spaces. For further security, it also provides integrity checksums and B+ Trees. Also, the increased file/volume/directory sizes are also strikingly similar to Btrfs. The Microsoft twist: Let's just say that Microsoft didn't do anything from scratch. While I did not dive deep into the file system drivers, I suspect that Microsoft looked very hard at some of the principles that worked years ago in both ZFS and then Btrfs and got the "inspiration" to develop something very similar. [h=3]Stealing or innovating?[/h] While I won't deny that Microsoft has "borrowed" many ideas from the open source world, overall they're trying to find their own game in Windows 8. Sursa: Eight features Windows 8 'borrowed' from Linux | ITworld
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Sa vorbesc cu cateva persoane si vorbim apoi.