security certificate error android

I. Vulnerability descriptionSecurity company Bluebox Security recently claims that they have discovered vulnerabilities that may affect 99% devices in the Android system. According to this statement, this vulnerability has existed since Android 1.6 (Donut). malware makers can use it to modify the APK code without cracking the encrypted signature, attackers can by

can be easily created by Kali Linux. Go fishing at the mall. Encryption algorithm RC4 is obsolete and not recommended for use. SHA256 best, not recommended MD5 SHA1 RSA to 2048 bit, to padding. The symmetric encryption key is not placed in the code. Can be negotiated after saving on local encrypted storage. AES does not use the ECB mode, initialization vectors do not use fixed constants. Securerandome do not use Setseed () and do not pass in fixed valu

A problem has been encountered in the. NET core project recently, with an error following an interface that accesses HTTPS via httpclient:WINHTTPEXCEPTION:A Security error occurred System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () system.ru Ntime. CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (Task Task) System.runtime.c

Android UI operations are not thread-safe, and only the main thread can operate the UI. At the same time, the main thread has a certain time limit on UI operations (up to 5 seconds ). To perform some time-consuming operations (such as downloading and opening large files), Android provides some column mechanisms. The articles in the "android basics 02-thread

) url. openConnection ();} /*** Trust all hosts-do not check any certificate*/@ SuppressLint ("TrulyRandom ")Private static void trustAllHosts (){// Create a trust manager that does not validate certificate chains// Android uses the X509 Certificate Information MechanismTrustManager [] trustAllCerts = new TrustManager

Came in and bought the Apple certificate and found all kinds of problems.Xcode6 can't test on my iphone6s. I had to upgrade to 7.HTTP traffic in Xcode 7 has the following error: Application transport security has blocked a cleartext http (http://) resource load since it is insec Ure. Temporary exceptions can be configured via your app ' s info.plist file.Words 10

, as follows: Then there is a question, if you want to run a request with Sqlmap, there is no SQL injection, how to do? It is very simple to save each proxy request to the log, Sqlmap use the-l parameter to specify the file run. Specific settings:If we select the Sqlmap.txt file, save the proxy request log.E:\android>sqlmap.py-l Sqlmap.txtYou can run like this. How do I catch HTTPS packets? We test the reset password, retri

 Certified Peer-to-peer Examples:Basic and Digest authentication for HTTPPAP and CHAP authentication for PPPMobile phone login password and hidden MMI designSeven Electronic signatures(a) signature to solve what problemSign what? Integrity Protection of the contents of the checkWho's signing? Non-repudiation of the signatory(ii) The dual nature of public key cryptography(iii) Electronic signature =hash+ Public key cryptographyrsa's low-efficiency features, resulting in even signatures that

Reference to:http://www.freebuf.com/tools/50324.htmlFrom serious Heartbleed vulnerabilities to Apple's gotofail vulnerabilities, to the recent SSL V3 poodle vulnerabilities ... We have seen the huge disaster caused by the vulnerability of network traffic. So "valley Man" came! Google has recently developed a tool,--nogotofail, that can help developers detect security breaches in network traffic classes.Keep all networked devices protected from TLS and

explains the security issues caused by improper use of Logcat in Android development Original address: http://drops.wooyun.org/tips/3812 0x00 Popular Science Development version: Development version, under development of beta version, there will be many debug logs. Release version: Release, signed and developed to the user's official version, less log volume. Android.util.Log: Provides five ways

Marshmallow Version Permissions ModificationThe Android privilege system has always been the primary security concept because these permissions are only asked once during installation. Once installed, the app can access everything in the right without the user's knowledge, and the average user rarely has to look at the list of permissions when it's installed, not to get a deeper understanding of the risks a

. method. invokenative (native method)At java. Lang. Reflect. method. Invoke (method. Java: 521)At com. Android. Internal. OS. zygoteinit $ methodandargscaller. Run (zygoteinit. Java: 858)At com. Android. Internal. OS. zygoteinit. Main (zygoteinit. Java: 616)At Dalvik. system. nativestart. Main (native method) Certificate -----------------------------------------

Android Development notes-Memory leakage and thread security of common BUG types, androidbug The content of this article comes from the summary of the last internal sharing and cannot be detailed. Sorry. This article focuses onMemory leakageAndThread SecurityThese two problems are explained. The bugs detected by internal code scanning are roughly divided into four categories: 1) NULL pointer; 2) Division

Complete analysis of Android security attack and defense, decompilation and obfuscation technologies (I) I have been hesitant to write this article before. After all, it is not proud to decompile other programs. However, from a technical point of view, it is indeed a very useful skill to master the decompilation function, which may not be used very often, that's a headache. In addition, since someone else c

Android 6.0 Permission and security mechanism, androidpermissionModify Marshmallow version Permissions The permission system of android has always been the primary security concept, because these permissions are only asked once during installation. Once installed, the app can access everything in the permission without

transform the Dex file into all byte-end structures, and the inverted Dex file can break the reverse tool but still be able to run on the device.This type of attack is theoretically feasible. We can refer to the Android source code implementation of the reverse side, the specific code is located in/dalvik2/libdex/dexswapandverify.cppFour, anti-virtual machine technologyHow do I detect if the app environment is a QEMU virtual machine? We can get relev

First, prefaceRecently want to explode an app, no shell, simple to use JADX Open View source code, the results amused me, since it is all Chinese, and some of the more wonderful Chinese words:Instantly feel confused, the app is really playing, we know because the Java language is supported by two characters, so you can define the package name, class name, variable name, method name into Chinese, or other countries of the language can be . Therefore, this practice does not run the

Release date: 2011-08-02Updated on: 2011-08-02 Affected Systems:Android Open Handset Alliance Android 3.xDescription:--------------------------------------------------------------------------------Cve id: CVE-2011-2357 Android is a project launched by Google through Open Handset Alliance. It is used to provide a complete set of software for mobile devices, including operating systems and middleware.