reverse-engineering

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Decode obfuscated JavaScript Question: I have the following javascript code: var _0xe91d=["\x28\x35\x28\x24\x29\x7B\x24\x2E\x32\x77\x2E ... x5F\x63\x6F\x6E\x74\x5F\x64\x75\x72\x7C\x76\x5F\x74\x61\x62\x73\x5F\x61\x6C\x69\x67\x6E\x7C\x76\x5F\x74\x61\x62\x73\x5F\x64\x75\x72\x7C\x76\x5F\x73\x63\x72\x6F\x6C\x6C\x7C\x63\x6F\x6E\x74\x5F\x61\x6E\x69\x6D\x7C\x63\x6F\x6E\x74\x5F\x66\x78\x7C\x74\x61\x62\x5F\x66\x78\x7C\x72

问题 When ltrace hits a rand function, it shows it with 4 paramters, like this: rand(0, 0x5649bd4e6010, 0x7f0955490760, 0x7f09551cf7b0) = 0x17382962 rand doesn't take any arguments. What is ltrace showing here? Edited to add example: #include <stdio.h> #include <stdlib.h> #include <time.h> int main() { srand((unsigned int)time(NULL)); int r = (rand() % 4096); printf("The number is: %d\n", r); } Compile and run with ltrace: $ ltrace ./demo __libc_start_main(0x4005f6, 1, 0x7ffe1e719fa8, 0x400650

问题 I lost the code from all the apps I built last year (thunder against my hard disk, no backup for any app). As they were rather simple apps, I put them under reverse engineering process. I have already done this a dozens of time in the past, each time I had no problems at all (if we do not count hours of work to put together all the files into a single project). I have already finished 3 apps I lost during hard disk burnout. They were reversed almost flawlessly, but I got stuck with this one.

问题 I need to communicate with a RS232 device, I have no specs or information available. I send a 16 byte command and get a 16 byte result back. The last byte looks like some kind of crc or checksum, I have tried using this http://miscel.dk/MiscEl/miscelCRCandChecksum.html with no luck. Anyone can reverse engineer the crc/checksum algorithm? here is some data captured with an RS-232 monitor program: 01 80 42 00 00 00 00 00 00 00 00 00 00 00 01 B3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 02 51 01

问题 I have *.ipa file which is the iphone application. Is that possible to use reverse engineering in that ipa and extract code..? 回答1: Well, its not really a hacking but it can surely help you identify some parts of the UI... Do the following: 1- Create a new project on the Xcode (doesn't really mater what you choose) 2- Connect your device to your computer 3- Profile your project on your device. 4- On the Profile, pick Core Animation 5- On the options choose Color Blended Layers It will look

问题 Goal My goal is to get an UML model out of my JavaScript project (consisting of several .js files) and store it as XMI. How far I've come I searched the internet and found out js/uml is the first place to go. I've managed it to get the js/uml plugin running with Eclipse 3.7.1 (Win32) and a local installation of my pre-downloaded additional plugins: mdt-uml2tools-Update-incubation-I201103290512.zip (installs required org.eclipse.uml2.diagram.clazz 0.10.0) jsuml-eclipse-0.8.4.zip (only works

问题 Looking at kernel32.dll as it is loaded into memory, I see the following export ordinal table: (gdb) x /400hd $eax 0x776334b0 <Wow64Transition+71576>: 3 4 5 6 7 8 9 10 0x776334c0 <Wow64Transition+71592>: 11 12 13 14 15 16 17 18 0x776334d0 <Wow64Transition+71608>: 19 20 21 22 23 24 25 26 0x776334e0 <Wow64Transition+71624>: 27 28 29 30 31 32 33 34 0x776334f0 <Wow64Transition+71640>: 35 36 37 38 39 40 41 42 0x77633500 <Wow64Transition+71656>: 43 44 45 46 47 48 49 50 0x77633510 <Wow64Transition

问题 I know Visual Studio 2010 Ultimate has some abilities, and I would normally do this by instinct, but I am on a very tight schedule. I also have Visio 2010 installed and integrated into VS, but its reverse engineer function doesn't seem to do much, and has to be run on a per project basis, and a hindrance here is the solution structure, with several solution folders each holding a multitude of projects. I would like some advice on how to go about reverse engineering a C# solution into

问题 Xcode deleted my project and everything is gone. The only thing that I have is the app in my iPhone 6. So is there any way that I can retrieve the Xcode project of the app? .. Update .. i found all the files now i just need to reassemble them in a new project . but I don't know how . 回答1: Unfortunately, There is no current way to un-archive an app. You must have the .xcodeproj file in order to make changes. The .ipa is useless in terms of editing or changing your app. And if there was a way

问题 The sections of Portable Executable files are tagged with differents flags. Can someone explain the difference between IMAGE_SCN_MEM_EXECUTE (the section can be executed as code) and IMAGE_SCN_CNT_CODE (the section contains executable code)? Thanks. 回答1: IMAGE_SCN_MEM_EXECUTE is the one that is actually used by the PE loader to set up page permissions. IMAGE_SCN_CNT_CODE is not used, I guess it's just a descriptive flag. 来源： https://stackoverflow.com/questions/3912129/executable-sections-flag