I know she recently got nerfed, but basically she plays so that around the 30-45 minute mark, the player can kill the enemy team's supports by pressing R. Around the 50-60 minute mark, the player can solo several enemy carries at once by pressing R. I just played a game where I was Gyrocopter against a pub carry team (Spectre, Wraith King, Medusa, Outworld Devourer - like wtf?) This new class of vulnerability will continue to develop for several years. I was doing 350+ damage per attack, bu it felt like I was basically tickling her to death with how little I could take off of her health. Yeah this has been my experience too. We perform the four steps below to program the PMU for testing. Oracle+X. Just blow that motherfucker up. The RTM_RETIRED.ABORTED counter has a very high signal-to-noise ratio and looks promising. Install the ISR to analyze the full LBR stack at misprediction when the PMI is delivered. The version heard in “Spectre” is performed by German countertenor Andreas Scholl, a classical singer in the alto vocal range, together with the Australian Brandenburg Orchestra under the direction of its Artistic Director and conductor Paul Dyer. Based on their research and our experience in CPU performance, we hypothesized that many hardware and software flaws can be detected using a combination of heuristic-driven interrupts and instruction sequence verification based on these hardware counters. TSX bypasses traditional try/catch C++ exception handling making the timing faster with less jitter. The major contribution from Yarom and Falkner is the abuse of the last level cache (L3) in an evict and reload loop to reliably determine memory locations and disclose data. This initial research and solutions, while promising, are far from complete. Not to mention her pure damage and diffusal build is absolutely devastating to not just supports, but also carries during mid-game. As the code above demonstrates, there is a large difference in the UOPs missing the L3 cache when performing the side-channel attack. Below are the results. A UOP is a micro operation responsible for the building blocks necessary during instruction execution. The side effect we investigate is the ITLB_FLUSH that happens on context switches in the servicing of exceptions. In most cases, the attack first records a start time using high resolution timers like RDTSC/RDTSCP, although these instructions are not strictly necessary. Mad dmg output and few tricks to stall . Spectre and Meltdown require two fundamental capabilities to work: speculative execution and cache side-channels. In our analysis TSX aborts do not occur normally, but do in this type of exploit. Additional features exist to generate an interrupt when counters reach a limit giving us the ability to perform additional analysis. Spectre will mispredict the same branch once causing the speculative execution to read out-of-bounds. Admittedly she's one of my more favorite carries, but honestly I feel like late game, spectre becomes a bit unfair, even with just a few items. Lots of SD. Without TSX, the attacker must rely on traditional exception handling to perform timing attacks. imma look into how to play him. There are dozens of events available and processors can be programmed from the kernel to monotonically count events with near-zero overhead. Speculative execution causes a side effect that enables memory disclosure when combined with these cache attacks. Transactional Synchronization Extensions (TSX) are a set of instructions provided on Intel processors for efficient synchronization of threaded execution. While we did not reproduce Jann's specific attack of the KVM host memory space, we simulated cross-vm and same system attacks using different implementations of FLUSH+RELOAD from the original research paper. The following code demonstrates the same attack but instead uses traditional Structured Exception Handling (SEH) on Windows. picking a tryhard lane against him, like sk + ogre or keeper + sven to shut him down early is the best counter to him imo. If an illusion attacks someone with blademail, does the illusion or real hero take the damage? The SPECTRE cabinet had a total of 21 members. We feel strongly that our approach to protection - and focusing on classes of vulnerabilities instead of each specific CVE as it pops up - serves our customers well against these kinds of attacks and those in the future. You can counter her with pretty much every hero early game. Admittedly she's one of my more favorite carries, but honestly I feel like late game, spectre becomes a bit unfair, even with just a few items. For MEM_LOAD_UOPS_RETIRED.L3_MISS we count every time the system was asked to load data from the cache but was missed in the LLC. She has a really low atk speed, early game its easy to harrass her and killed her if she is out of position and you have sufficient amount of damage from fire bird. The output below is from Intel’s pcm tool. By measuring the time again, the attacker can discover differences in timing and identify unmapped/mapped/non-executable/executable pages in memory. Based on our reading of the Spectre white paper and testing sample code we assume the following. Laser beam is pure damage and %hp so no matter how fat spec is she will at least lost half of her hp from a full duration laser beam. However, the LBR is not reliably recording the victim loop and we aren’t sure why. Press question mark to learn the rest of the keyboard shortcuts. In paper yes he can hard counter to spectre. You can manaburn the haunt illusion to get rid of it then help your team, or if spectre jumps instantly to you, you could just hex+impale her. Just as we are inspired by the number of researchers that have contributed findings on hardware attacks, we hope to similarly stimulate conversations about promising defensive measures for these new classes of vulnerabilities that are likely to exist for years to come. The following is a list of SPECTRE members, organized by their assigned numbers. A retired UOP is one that was valid and finished its task. Analyze the LBR in the ISR to determine if a pattern of predicted and mispredicted victim_function locations exists. It’s Bond v Hinx/plane v car in this sequence from Spectre (2015) filmed in Austria. We see this clearly by counting RTM_RETIRED.ABORTED system-wide during normal activity and comparing the output to the same test with the kaslrfinder side-channel attack running. This situation is no different from investigating other types of exploits. Below are the experiment results using this approach when executing the PoC from the Spectre paper, modified to show the address of the targeted conditional branch in victim_function and using  __mfence instead of the timing loop. On program execution, record the current count of UOPs retired with L3 misses. The documentation defines the counter behavior as “the number of times RTM (Restricted Transactional Memory) abort was triggered”. This is why we chose to use them for control-flow integrity, and why they are an exciting opportunity for detecting attacks like Spectre and Meltdown on all operating systems. The RTM_RETIRED.ABORTED counter has a very high signal-to-noise ratio and looks promising. Spectre’s Mountain Chase Today's clip is the dynamic Austrian chase. I found phoenix somehow a great counter to spec. Dispersion worked on illusions like 6 years ago in dota 1 I remember, not anymore thou. The possible steps using ITLB_FLUSH+LBR are as follows. Run an aggro lane against her. Elasticsearch is a trademark of Elasticsearch B.V., registered in the U.S. and in other countries. Shorter access times imply that the CPU has recently worked with data belonging to that cache line. Given the impact and technical challenge inherent within these vulnerabilities, we quickly dove into the details to investigate potential detection and prevention strategies to ensure the Endgame product is robust against these new kinds of hardware attacks. To determine a defensive solution for FLUSH+RELOAD, we investigated whether an abnormal amount of L3 cache misses could be observed globally across the system, and if the observation indicated a significant deviation from a baseline when performing the attack. The ability to manipulate and measure various processor caches is critical to reliable exploitation. We then presented our work in 2016 at BlackHat USA. Also as a Spectre player, I hate Spirit Breaker because Spectre's jungling speed is ass. Special effects supervisor Chris Corbouldcame up with an ingenious solution for when the plane has to skid along on its fuselage. In a teamfight simply press ult since spec ult is meaningless against supernova and the stun piercing bkb is really helpful. Last week, a blog post by Jann Horn of Google and the release of two white papers by multiple researchers set off a frenzy of public panic and speculation. In the above assembly, an access violation during the call will “silently” continue executing at the _xabort label. Elasticsearch B.V. All Rights Reserved. All trademarks are property of their respective owners in the US and other countries. If a branch instruction generates a trap type exception, two branch records are stored in the LBR stack: a branch record for the branch instruction followed by a branch record for the exception. Measure the baseline from the test system. It then probes an unknown address and handles the exception. Shadow demon is the legit anti-carry for decade. The experiment follows. We could possibly use the LBR to record the multiple successfully-predicted branches preceding the malicious one. While this result needs more experimentation we are hoping for a stronger correlation from the indirect branch method used by Jann and also covered in the Spectre paper.

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