It then loads two separate processes into memory: One is S-Boot itself, and the other is the TrustZone TEE (Trusted Execution Environment), running in the so-called "Secure world". The Android boot process on Samsung begins with code running in the Boot ROM, which verifies the integrity of the next-stage bootloader using the OEM public key, known on Samsung devices as the Samsung Secure Boot Key (SSBK). If you need any help beyond that, just DM me and I'd be glad to give you a hand if I can. Fernand Lone Sang is about to publish a great article exactly about that and I'll put a link for it here when it's out. We won't go into much detail on the basics of reversing S-Boot, such as how to load it into IDA or find the base address. In the next post we'll disclose the actual vulnerability and how we exploited it to get code execution in S-Boot. We'll end the post with the discovery of an especially interesting attack surface. In this post we'll focus on some S-Boot internals, then explore the bootloader's attack surface and get basic debugging capabilities. There's a lot of ground to cover, so we'll break up this write-up into two posts. The very newest ROMs for S7 (February 2017) appear to include a fix for this bug, but we'll confirm this in a few days. It seems universal to approximately 90% of the Samsung Exynos ROMs running on S5, S6 and S7. We can currently confirm the existence of the vulnerability only on Exynos chipsets. This is a well-known attack vector: It's often used by the Android rooting and modding community, but our guess is that it's way more popular with law enforcement and government agencies.Īll the more interesting, then, that S-Boot on contains several memory corruption bugs, one of which could be used to reach full code execution within the bootloader. An attacker who compromises S-Boot could potentially load an untrusted kernel and system image, therefore bypassing most of the phone's security mechanisms. With the 29 pairs of pants below, there’s a fabulous rear view for almost every day of the month.Nitay Artenstein ( and Gilad Goldman ( Secure Bootloader ( S-Boot) for Android lies at the heart of Samsung's chain of trust concept. I scoured Amazon for pairs that ticked all of these boxes, specifically combing through reviews that vouched for pairs that made bums look fantastic - so fantastic that they garnered sometimes more than 5,000 reviews for their bum-centric good looks. Rayon blends and airy polyester crepes both flow easily and melt over your form without clinging, and you can find them in everything from sporty track pants to chic palazzos. But what if you prefer looser styles? Certain fabrics will give better drape - which means they’ll skim your shape in a way that subtly shows it off while still leaving plenty of room to lounge on the couch. Look for ones that are fitted through the hip in an ultra-thick, stretchy fabric that hugs and gives some oomph. If the pants you're considering aren’t sewn with a yoke or pockets - think leggings and yoga pants - you can still find pairs that will make your butt look amazing. Pocket placement is also key look for pairs that sit high and centered on your cheeks, which creates a lifting effect. A V-shaped or curving yoke is the secret sauce that gives derrieres a lift, although conservative cuts like work pants usually opt for darts above each pocket for a nicely fitted seat. The number one thing to check is their yoke: that angled back panel between the pockets and waistband. It turns out there’s a science to pants that make your butt look great, and it largely boils down to their tailoring. You can try on dozens of jeans, scores of leggings, and send snaps to your best friends for review - but unless you know what design features to look for, the effort can be exhausting. When you’re shopping for pants, the overall fit is obviously key, but in my opinion, a close second is whether or not the pants make your butt look good.
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