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Author: t | 2025-04-23
Certainly, I will answer all the questions on the sheet. What will be the value in EDX after each of the lines marked (a) and (b) execute? (20 p) (a) The value in EDX will be .edx, h (b) The value in EDX will be .edx,one and .edx,two edX for iPhone, free and safe download. edX latest version: edX (Free Educational App). edX is an application for mobile devices that allows users to
EDX SignalPro 8.6.5/Signal 11.6.5 - EDX Wireless
03C2 add eax, edx :004AA45E 0FB75706 movzx edx, word ptr [edi+06] :004AA462 03C2 add eax, edx :004AA464 0FB75708 movzx edx, word ptr [edi+08] :004AA468 0FB74F0A movzx ecx, word ptr [edi+0A] :004AA46C 03D1 add edx, ecx :004AA46E 0FB74F0C movzx ecx, word ptr [edi+0C] :004AA472 03D1 add edx, ecx :004AA474 0FB74F0E movzx ecx, word ptr [edi+0E] :004AA478 03D1 add edx, ecx :004AA47A 3BC2 cmp eax, edx :004AA47C 751E jne 004AA49C :004AA47E 663B7708 cmp si, word ptr [edi+08] :004AA482 7518 jne 004AA49C 數字的個數是否等於s5(中文算2個 。我此處的si=2f) :004AA484 0FB74708 movzx eax, word ptr [edi+08] :004AA488 0FB717 movzx edx, word ptr [edi] :004AA48B 03C2 add eax, edx :004AA48D 0FB7570A movzx edx, word ptr [edi+0A] :004AA491 3BC2 cmp eax, edx :004AA493 7507 jne 004AA49C :004AA495 66837F0C64 cmp word ptr [edi+0C], 0064 :004AA49A 743B je 004AA4D7 * Referenced by a (U)nconditional or (C)onditional Jump at Addresses: |:004AA394(C), :004AA3D1(C), :004AA40F(C), :004AA44D(C), :004AA47C(C) |:004AA482(C), :004AA493(C) | :004AA49C 6A10 push 00000010 :004AA49E 684CA64A00 push 004AA64C :004AA4A3 6888A64A00 push 004AA688 :004AA4A8 8B45FC mov eax, dword ptr [ebp-04] :004AA4AB E870E9F8FF call 00438E20 :004AA4B0 50 push eax :004AA4B1 E826CFF5FF call 004073DC 這樣我們就可以推算出註冊碼的條件了。 u1=73h u2=75h c1=73h c2=75h s1 s2 s3 s4 s5 s6 s7 s8 u2 + c2 = s1 234 u1 + c1 = s2 230 u1 + u2 = s3 232 c1 + c2 = s4 232 s1 + s2 + s3 + s4 = s5 + s6 + s7 + s8 s1 + s5 = s6 s6 = 100 sum = s5 (當使用者名稱只為一中文字時,sum=1Ah)47 s1. 234 s2. 230 s3. 232 s4. 232 s5. 047 s6. 281 s7. 100 s8. 500 這樣,我的 使用者名稱:sunwk 公司名:sunwk 註冊碼:234230232232047281100500 end.
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With a catalog of more than 4000 courses, edX should have something for every online learner, no matter the subject they’re interested in. However, free course access on edX is typically limited: most often, you’ll only have access to part of the course content and only for a limited time.Fortunately, this limitation doesn’t apply to all courses. At Class Central, we’ve scoured the edX catalog to identify courses that still offer free unlimited access, and we’ve put them in a handy list that we’ll continue to update.If you enjoy this list, you may also want to have a look at our list of 1800+ Coursera Courses Still Completely Free.Is edX free?There once was a time when MOOCs (or massive open online courses) were free, including those offered on edX. But in their quest for a sustainable business model, one after the other, online course platforms started introducing paywalls. We reported on this as it happened.Nowadays, if you want unrestricted access to an edX course, you’ll typically have to pay. More specifically, most edX courses offer the following access modalities:Paid full access: In this modality, you’ll have access to all course material and graded assignments, and upon completion of the course, you’ll earn a verified certificate of completion.Free audit: In this modality, you’ll have temporary access to the course material (usually, a month), but you won’t have access to graded assignments, and you won’t earn a certificate upon completion.For example, the popular edX online course Introduction to Computational Thinking and Data Science in our Best Courses Guide (BCG) to the best data science courses offers these two modalities, as you can see below:The most common access modalities on edX: Paid full access and free audit.Fully-Free edX CoursesHowever, while most edX courses default to the two modalities above, fortunately for us, someedX Launches AI Course Translations - edX Enterprise
如何計算 批量檔案設定器 2.05 的註冊碼 作者主頁 上次得冰毒大俠幫助,破了那個renameman,但有時那個軟體會拒絕工作。忍無可忍情況下,我delete it,近日用上了國人的產品 批量檔案設定器 2.05。 這個軟體是用aspack 1.083壓縮的,這次不高興去用解壓加暴力破解的方法,我來試試找出註冊碼的計算方法。 隨便填入使用者名稱:sunwk 公司名:sunwk 註冊碼:213546 trw中下命令: bpx:hmemcpy g 回到目標程式中,按下“現在註冊”按鈕,見trw跳出。 bd,中斷斷點。F12按14下(按15下,註冊失敗的窗戶就跳出來了),改按F10一直走。 以下為了解說的方便,定義一些縮略語,並都是16進製表示。u1:使用者名稱第一個字母。u2:使用者名稱第二個字母。c1:公司名第一個字母。c2:公司名第二個字母。s指註冊碼,3位數字為一組,共8組,依次為s1、s2、s3、s4、s5、s6、s7、s8。 :004AA386 8B45C0 mov eax, dword ptr [ebp-40] :004AA389 0FB64001 movzx eax, byte ptr [eax+01] eax=c2,ebx=u2. :004AA38D 03D8 add ebx, eax ebx=c2+u2 :004AA38F 0FB707 movzx eax, word ptr [edi] eax=s1 :004AA392 3BD8 cmp ebx, eax :004AA394 0F8502010000 jne 004AA49C :004AA39A 8D55BC lea edx, dword ptr [ebp-44] :004AA39D 8B45FC mov eax, dword ptr [ebp-04] :004AA3A0 8B80DC020000 mov eax, dword ptr [eax+000002DC] :004AA3A6 E86188F8FF call 00432C0C :004AA3AB 8B45BC mov eax, dword ptr [ebp-44] :004AA3AE 33DB xor ebx, ebx :004AA3B0 8A18 mov bl, byte ptr [eax] :004AA3B2 8D55B8 lea edx, dword ptr [ebp-48] :004AA3B5 8B45FC mov eax, dword ptr [ebp-04] :004AA3B8 8B80E0020000 mov eax, dword ptr [eax+000002E0] :004AA3BE E84988F8FF call 00432C0C :004AA3C3 8B45B8 mov eax, dword ptr [ebp-48] :004AA3C6 0FB600 movzx eax, byte ptr [eax] eax=c1,ebx=u1 :004AA3C9 03D8 add ebx, eax ebx=c1+u1 :004AA3CB 0FB74702 movzx eax, word ptr [edi+02] ebx=s2 :004AA3CF 3BD8 cmp ebx, eax :004AA3D1 0F85C5000000 jne 004AA49C :004AA3D7 8D55B4 lea edx, dword ptr [ebp-4C] :004AA3DA 8B45FC mov eax, dword ptr [ebp-04] :004AA3DD 8B80DC020000 mov eax, dword ptr [eax+000002DC] :004AA3E3 E82488F8FF call 00432C0C :004AA3E8 8B45B4 mov eax, dword ptr [ebp-4C] :004AA3EB 33DB xor ebx, ebx :004AA3ED 8A18 mov bl, byte ptr [eax] :004AA3EF 8D55B0 lea edx, dword ptr [ebp-50] :004AA3F2 8B45FC mov eax, dword ptr [ebp-04] :004AA3F5 8B80DC020000 mov eax, dword ptr [eax+000002DC] :004AA3FB E80C88F8FF call 00432C0C :004AA400 8B45B0 mov eax, dword ptr [ebp-50] :004AA403 0FB64001 movzx eax, byte ptr [eax+01] :004AA407 03D8 add ebx, eax :004AA409 0FB74704 movzx eax, word ptr [edi+04] :004AA40D 3BD8 cmp ebx, eax :004AA40F 0F8587000000 jne 004AA49C :004AA415 8D55AC lea edx, dword ptr [ebp-54] :004AA418 8B45FC mov eax, dword ptr [ebp-04] :004AA41B 8B80E0020000 mov eax, dword ptr [eax+000002E0] :004AA421 E8E687F8FF call 00432C0C :004AA426 8B45AC mov eax, dword ptr [ebp-54] :004AA429 33DB xor ebx, ebx :004AA42B 8A18 mov bl, byte ptr [eax] :004AA42D 8D55A8 lea edx, dword ptr [ebp-58] :004AA430 8B45FC mov eax, dword ptr [ebp-04] :004AA433 8B80E0020000 mov eax, dword ptr [eax+000002E0] :004AA439 E8CE87F8FF call 00432C0C :004AA43E 8B45A8 mov eax, dword ptr [ebp-58] :004AA441 0FB64001 movzx eax, byte ptr [eax+01] :004AA445 03D8 add ebx, eax :004AA447 0FB74706 movzx eax, word ptr [edi+06] :004AA44B 3BD8 cmp ebx, eax :004AA44D 754D jne 004AA49C :004AA44F 0FB707 movzx eax, word ptr [edi] :004AA452 0FB75702 movzx edx, word ptr [edi+02] :004AA456 03C2 add eax, edx :004AA458 0FB75704 movzx edx, word ptr [edi+04] :004AA45C. Certainly, I will answer all the questions on the sheet. What will be the value in EDX after each of the lines marked (a) and (b) execute? (20 p) (a) The value in EDX will be .edx, h (b) The value in EDX will be .edx,one and .edx,twoedx-archive - a simple tool to download edX course
Esi; mov esi, dword ptr [esp + 0x18]; add esp, 0x1c; ret ; 0x000076f8: mov eax, dword ptr [eax]; mov byte ptr [eax + edx], 0; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" 0x000067ed: mov dword ptr [esp + 4], edx; mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax; 0x00006f4e: mov dword ptr [ecx + 0x14], edx; add esp, 0x2c; pop ebx; pop esi; pop edi; pop ebp; ret ; 0x000084b8: mov dword ptr [eax], edx; ret ; 0x00008d9b: mov dword ptr [eax], edx; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" --quality 1 0x000084b8: mov dword ptr [eax], edx; ret ;; ret ;Use ropper in Scripts#!/usr/bin/env pythonfrom ropper import RopperService# not all options need to be givenoptions = {'color' : False, # if gadgets are printed, use colored output: default: False 'badbytes': '00', # bad bytes which should not be in addresses or ropchains; default: '' 'all' : False, # Show all gadgets, this means to not remove double gadgets; default: False 'inst_count' : 6, # Number of instructions in a gadget; default: 6 'type' : 'all', # rop, jop, sys, all; default: all 'detailed' : False} # if gadgets are printed, use detailed output; default: Falsers = RopperService(options)##### change options ######rs.options.color = Truers.options.badbytes = '00'rs.options.badbytes = ''rs.options.all = True##### open binaries ####### it is possible to open multiple filesrs.addFile('test-binaries/ls-x86')rs.addFile('ls', bytes=open('test-binaries/ls-x86','rb').read()) # other possiblityrs.addFile('ls_raw', bytes=open('test-binaries/ls-x86','rb').read(), raw=True, arch='x86')##### close binaries ######rs.removeFile('ls')rs.removeFile('ls_raw')#Downloading videos in the edX App – edX Help Center
./Ropper.py --file /bin/ls --set nx ./Ropper.py --file /bin/ls --unset nx ./Ropper.py --file /bin/ls --inst-count 5 ./Ropper.py --file /bin/ls --search "sub eax" --badbytes 000a0d ./Ropper.py --file /bin/ls --search "sub eax" --detail ./Ropper.py --file /bin/ls --filter "sub eax" ./Ropper.py --file /bin/ls --inst-count 5 --filter "sub eax" ./Ropper.py --file /bin/ls --opcode ffe4 ./Ropper.py --file /bin/ls --opcode ffe? ./Ropper.py --file /bin/ls --opcode ??e4 ./Ropper.py --file /bin/ls --detailed ./Ropper.py --file /bin/ls --ppr --nocolor ./Ropper.py --file /bin/ls --jmp esp,eax ./Ropper.py --file /bin/ls --type jop ./Ropper.py --file /bin/ls --chain execve ./Ropper.py --file /bin/ls --chain "execve cmd=/bin/sh" --badbytes 000a0d ./Ropper.py --file /bin/ls --chain "mprotect address=0xbfdff000 size=0x21000" ./Ropper.py --file /bin/ls /lib/libc.so.6 --console [Assemble/Disassemble] ./Ropper.py --asm "jmp esp" ./Ropper.py --asm "mov eax, ecx; ret" ./Ropper.py --disasm ffe4 [Search] ./Ropper.py --file /bin/ls --search ? any character % any string Example: ./Ropper.py --file /bin/ls --search "mov e?x" 0x000067f1: mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax 0x00006d03: mov eax, esi; pop ebx; pop esi; pop edi; pop ebp; ret ; 0x00006d6f: mov ebx, esi; mov esi, dword ptr [esp + 0x18]; add esp, 0x1c; ret ; 0x000076f8: mov eax, dword ptr [eax]; mov byte ptr [eax + edx], 0; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" 0x000067ed: mov dword ptr [esp + 4], edx; mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax; 0x00006f4e: mov dword ptr [ecx + 0x14], edx; add esp, 0x2c; pop ebx; pop esi; pop edi; pop ebp; ret ;EDX SignalPro/Signal The Cirrus Platform - EDX Wireless
75,116 2 IIT Delhi (IITD) INR 1,06,300 - 2,20,300 3 IIT Bombay (IITB) INR 73,750 - 2,28,000 4 IIT Kanpur (IITK) INR 2,14,050 - 2,42,900 5 IIT Kharagpur (IITKGP) INR 90,092 - 2,31,500 6 IIT Roorkee (IITR) INR 2,13,500 - 6,50,000 7 IIT Guwahati (IITG) INR 67,750 - 2,17,750 8 IIT Hyderabad (IITH) INR 2,36,500 - 5,00,895 9 College of Engineering, Anna University (CEG) INR 50,000 9 NIT Trichy INR 1,09,750 - 1,61,750 10 NIT Surathkal (NITK) INR 97,995 - 1,50,520 Engineering Courses in IGNOUSchool of Engineering and Technology, IGNOU offers various engineering courses through distance learning and online mode. Here is a list of engineering courses by IGNOU. Course Name Duration Fees BTech in Civil Engineering (Construction Management) (BTCM) 4 years INR 20,000 Diploma in Dairy Management 1 year INR 15,200 Diploma in Civil Engineering 3 years - Advanced Certificate in Power Distribution Management 6 months INR 5,200 Certificate in Motor Cycle Service and Repair 2 months - Certificate of Competency in Power Distribution (Technicians) 6 months INR 3,200 Ph.D. in Dairy Science and Technology 3 years INR 50,400 Post Graduate Certificate in Industrial Safety 6 months INR 6,000 Post Graduate Certificate in Inventory Planning and Warehousing 6 months INR 6,000 Engineering Courses OnlineOne can also pursue engineering courses. They are offered by top universities and reputed platforms including Udemy, EdX, Coursera, Udacity, etc. Online engineering courses are shorter and cheaper as compared to offline/ on campus courses. Course Name Providers Course Fees Diploma of Engineering Infrastructure University of Tasmania INR 6,21,036 Associate Degree in Engineering University of South Australia INR 11,39,703 Bachelor of Engineering Technology (Civil Engineering) Open Polytechnic varies Professional Certificate in Science and Engineering Prep: Pre-university Calculus and Physics EdX INR 6,934 MicroMasters Program in Solar Energy Engineering EdX INR 86,673 Electricity & electronics - Robotics, learn by building Udemy INR 3,499 Aerospace Engineering: Aircraft Fundamentals and Advanced Udemy INR 3,499 Introduction to Engineering Mechanics Coursera Free Enrollment Engineering Project Management Specialization Coursera Free Enrollment Diploma in Marine Diesel Engines Alison Free Engineering Courses Online FreeOne can also pursue engineering courses for free from platforms such as Alison, EdX, Futurelearn, Stanford Online, etc. These free courses are short term courses which can be completed in a few weeks. Check out the table below consisting of the list of free engineering courses online. Course Name Providers Duration Nano@Stanford Stanford University 10 weeks Quantum Mechanics for Scientists and Engineers Stanford University 9 weeks A Hands-on Introduction to Engineering Simulations EdX 6 weeks CS50's Introduction to Computer Science EdX 12 weeks Engineering Calculus and Differential Equations EdX 6 weeks Chemometrics in Air Pollution Futurelearn 3 weeks Principles of Engineering Futurelearn 4 weeks Construction Safety and Health Alison 3 -Download EDX SignalPro by EDX Wireless LLC - Software
Like SCORM, quizzes, videos, and assignmentsRobust reporting and analytics to track learner progressIntegration with third-party tools such as Google Apps, Microsoft 365, BigBlueBotton and ZoomPros:Community support: With thousands of plugins available, you can extend Moodle’s functionality to match almost any requirement. The large, active community ensures constant updates and security patches.Scalability: Whether you’re running a small course or a massive online university, Moodle can handle it.Multilingual support: Moodle supports over 100 languages, making it a great option for international institutions.Cons:The user interface, while functional, may seem outdated and less intuitive for some users.Setting up and managing a Moodle site can require technical expertise, especially if self-hosting.Best for Universities, online schools, K-12 institutions, and corporate training programs.Open edXOpen edX is an open-source Learning Management System (LMS), built to handle large-scale online education. Developed by Harvard and MIT, perfect for institutions or companies that want to offer courses on a global scale; whether it’s 100 or 100,000 learners, Open edX can handle it.Open edX is one of the best open-source LMS platforms for delivering large-scale online learning software solutions. Its advanced features and scalability make it ideal for institutions that want a free LMS with robust course authoring tools and global reach.It lets you create interactive courses with videos, quizzes, forums, and peer assessments to keep learners engaged. You can also track student performance, engagement, and course progress with detailed reports to improve the learning experience. Open edX supports both self-paced and instructor-led courses, allowing organizations to offer scalable learning solutions to a global audience. You can use open edX for small educational projects or scale it to serve millions of learners. It’s suitable for various environments, from schools to corporate training. Being open-source, you can also modify it to meet your specific needs.Open edX offers a variety of tools for interactive learning—video lectures, quizzes, discussion forums, and peer assessments—helping educators build engaging and comprehensive courses. You can also integrate Open edX with tools like Google Analytics, payment gateways, and other learning management systems.Key Open edX Features:Advanced course authoring tools with a visual editorSupport for MOOCs (Massive Open Online Courses), blended learning, and self-paced coursesBuilt-in analytics to monitor learner engagement and performanceCustomizable dashboards for both students and educatorsIntegration with third-party services like Zoom, Google Analytics, and e-commerce platformsPros:Scalability: Open edX is perfect for large-scale online learning environments, handling thousands of students across multiple courses.Customizable: As an open-source LMS, it offers extensive customization. Certainly, I will answer all the questions on the sheet. What will be the value in EDX after each of the lines marked (a) and (b) execute? (20 p) (a) The value in EDX will be .edx, h (b) The value in EDX will be .edx,one and .edx,two
EDX SignalPro 8.4.1 / Signal 11.4.1 - EDX Wireless
A popular course for adult English learners. With video English lessons and 1000s of activities, you can learn cultural facts and English language skills to adapt to life in the United States.Alongside online courses in grammar, vocabulary, and pronunciation, USA Learns has a helpful U.S. Citizenship course. This will provide you with all the information, language practice, and resources you’ll need to prepare for life as a U.S. citizen.⭐️⭐️⭐️User reviews“USA Learns is the best website to learn English free! I am learning a lot.” Martina – USA Learns“This is an excellent site to learn English or if you want to have perfect pronunciation.” Joao – USA LearnsPros and consProsCovers English language skills and civic knowledge required for citizenship.Free and government-sponsored.ConsGeared towards U.S. learners only.Price: FreeFlexibility: Self-pacedCertification: No official certificateCompletion time: Varies by learner (each course has 5 – 20 units with multiple video lessons per unit)Level: Beginner to intermediateRecommended resources:USA Learns Citizenship courseLife skills for ESL learners5. edX: Best for college-level coursesFounded by Harvard and MIT, edX is a trusted platform for online education. You can find a lot of college-level courses here, created and taught by actual professors from top universities.The courses aren’t free, but they are definitely cheaper than an actual college course. You can also achieve a verified certificate when you complete one. The course materials are all pre-recorded, so students can learn at their own pace. However, all assignments are due when the course ends.⭐️⭐️⭐️User reviews“I have been a student since the early days of edX. I have learned so much from high-quality courses delivered on the edX platform, taught by top-notch universities and industry partners all over the world. In the COVID19 #stayhome season, edX gave more learning opportunities. I cannot recommend edX enough!” 5/5* David C – Trustpilot“This is probably one of the bestDownloading videos in the edX App edX Help Center
April 2, 2019EDX SignalPro 8.6.5/Signal 11.6.5New product build – release 23619NEW FEATURES / ENHANCEMENTS / UPDATESSignalPro access to the EDX Tile Selector for Cirrus Data – An option for “EDX Cirrus Data…” is now available under the Databases menu option. This option will either open the EDX Tile Selector or provide a download link so that the Tile Selector can be installed alongside SignalPro for quick access to new Cirrus Data tiles.BUG FIXES/OTHERProject pane scrollbar jumping – Fixed a bug where the sidebar in the project pane would sometimes scroll to the bottom of content after changing the visibility of a study.Corrected file path generation for project location – The spreadsheet sectors editor and antenna pattern viewer were unable to browse files properly due to an extra trailing ‘\’ in the autogenerated file path.Improved input handling for Interference Contour Study – Previously when using FCC-Pt22 the dialog would raise an argument out of range error if the % time was not 10 or 50.Removed doubled margin for FCC propagation model – The FCC propagation model incorrectly allowed an added margin that was being doubled. The FCC propagation model no longer supports adding a margin in the propagation model dialog. To use a margin here, please use the EDX-FCC model instead. Margins are no longer doubled. NOTE: This may result in a change to your study results for existing projects.WiMAX adaptive modulation table now used whenever sector system type is WiMAX – If a sector is configured for the WiMAX system. Certainly, I will answer all the questions on the sheet. What will be the value in EDX after each of the lines marked (a) and (b) execute? (20 p) (a) The value in EDX will be .edx, h (b) The value in EDX will be .edx,one and .edx,twoOpen edX discussions - For everyone in the Open edX world
0x000084b8: mov dword ptr [eax], edx; ret ; 0x00008d9b: mov dword ptr [eax], edx; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" --quality 1 0x000084b8: mov dword ptr [eax], edx; ret ;; ret ;">usage: Ropper.py [-h] [--help-examples] [-v] [--console] [-f [ ...]] [-r] [-a ] [--section ] [--string []] [--hex] [--asm [ [H|S|R] ...]] [--disasm ] [--disassemble-address ] [-i] [-e] [--imagebase] [-c] [-s] [-S] [--imports] [--symbols] [--set ] [--unset ] [-I ] [-p] [-j ] [--stack-pivot] [--inst-count ] [--search ] [--quality ] [--opcode ] [--instructions ] [--type ] [--detailed] [--all] [--cfg-only] [--chain ] [-b ] [--nocolor] [--clear-cache] [--no-load] [--analyse ] [--semantic constraint] [--count-of-findings ] [--single]You can use ropper to display information about binary files in different file formats and you can search for gadgets to build rop chains for different architecturessupported filetypes: ELF PE Mach-O Rawsupported architectures: x86 [x86] x86_64 [x86_64] MIPS [MIPS, MIPS64] ARM/Thumb [ARM, ARMTHUMB] ARM64 [ARM64] PowerPC [PPC, PPC64] SPARC [SPARC64]available rop chain generators: execve (execve[=], default /bin/sh) [Linux x86, x86_64] mprotect (mprotect=:) [Linux x86, x86_64] virtualprotect (virtualprotect=:) [Windows x86]options: -h, --help show this help message and exit --help-examples Print examples -v, --version Print version --console Starts interactive commandline -f [ ...], --file [ ...] The file to load -r, --raw Loads the file as raw file -a , --arch The architecture of the loaded file --section The data of this section should be printed --string [] Looks for the string in all data sections --hex Prints the selected sections inComments
03C2 add eax, edx :004AA45E 0FB75706 movzx edx, word ptr [edi+06] :004AA462 03C2 add eax, edx :004AA464 0FB75708 movzx edx, word ptr [edi+08] :004AA468 0FB74F0A movzx ecx, word ptr [edi+0A] :004AA46C 03D1 add edx, ecx :004AA46E 0FB74F0C movzx ecx, word ptr [edi+0C] :004AA472 03D1 add edx, ecx :004AA474 0FB74F0E movzx ecx, word ptr [edi+0E] :004AA478 03D1 add edx, ecx :004AA47A 3BC2 cmp eax, edx :004AA47C 751E jne 004AA49C :004AA47E 663B7708 cmp si, word ptr [edi+08] :004AA482 7518 jne 004AA49C 數字的個數是否等於s5(中文算2個 。我此處的si=2f) :004AA484 0FB74708 movzx eax, word ptr [edi+08] :004AA488 0FB717 movzx edx, word ptr [edi] :004AA48B 03C2 add eax, edx :004AA48D 0FB7570A movzx edx, word ptr [edi+0A] :004AA491 3BC2 cmp eax, edx :004AA493 7507 jne 004AA49C :004AA495 66837F0C64 cmp word ptr [edi+0C], 0064 :004AA49A 743B je 004AA4D7 * Referenced by a (U)nconditional or (C)onditional Jump at Addresses: |:004AA394(C), :004AA3D1(C), :004AA40F(C), :004AA44D(C), :004AA47C(C) |:004AA482(C), :004AA493(C) | :004AA49C 6A10 push 00000010 :004AA49E 684CA64A00 push 004AA64C :004AA4A3 6888A64A00 push 004AA688 :004AA4A8 8B45FC mov eax, dword ptr [ebp-04] :004AA4AB E870E9F8FF call 00438E20 :004AA4B0 50 push eax :004AA4B1 E826CFF5FF call 004073DC 這樣我們就可以推算出註冊碼的條件了。 u1=73h u2=75h c1=73h c2=75h s1 s2 s3 s4 s5 s6 s7 s8 u2 + c2 = s1 234 u1 + c1 = s2 230 u1 + u2 = s3 232 c1 + c2 = s4 232 s1 + s2 + s3 + s4 = s5 + s6 + s7 + s8 s1 + s5 = s6 s6 = 100 sum = s5 (當使用者名稱只為一中文字時,sum=1Ah)47 s1. 234 s2. 230 s3. 232 s4. 232 s5. 047 s6. 281 s7. 100 s8. 500 這樣,我的 使用者名稱:sunwk 公司名:sunwk 註冊碼:234230232232047281100500 end.
2025-04-09With a catalog of more than 4000 courses, edX should have something for every online learner, no matter the subject they’re interested in. However, free course access on edX is typically limited: most often, you’ll only have access to part of the course content and only for a limited time.Fortunately, this limitation doesn’t apply to all courses. At Class Central, we’ve scoured the edX catalog to identify courses that still offer free unlimited access, and we’ve put them in a handy list that we’ll continue to update.If you enjoy this list, you may also want to have a look at our list of 1800+ Coursera Courses Still Completely Free.Is edX free?There once was a time when MOOCs (or massive open online courses) were free, including those offered on edX. But in their quest for a sustainable business model, one after the other, online course platforms started introducing paywalls. We reported on this as it happened.Nowadays, if you want unrestricted access to an edX course, you’ll typically have to pay. More specifically, most edX courses offer the following access modalities:Paid full access: In this modality, you’ll have access to all course material and graded assignments, and upon completion of the course, you’ll earn a verified certificate of completion.Free audit: In this modality, you’ll have temporary access to the course material (usually, a month), but you won’t have access to graded assignments, and you won’t earn a certificate upon completion.For example, the popular edX online course Introduction to Computational Thinking and Data Science in our Best Courses Guide (BCG) to the best data science courses offers these two modalities, as you can see below:The most common access modalities on edX: Paid full access and free audit.Fully-Free edX CoursesHowever, while most edX courses default to the two modalities above, fortunately for us, some
2025-03-31Esi; mov esi, dword ptr [esp + 0x18]; add esp, 0x1c; ret ; 0x000076f8: mov eax, dword ptr [eax]; mov byte ptr [eax + edx], 0; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" 0x000067ed: mov dword ptr [esp + 4], edx; mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax; 0x00006f4e: mov dword ptr [ecx + 0x14], edx; add esp, 0x2c; pop ebx; pop esi; pop edi; pop ebp; ret ; 0x000084b8: mov dword ptr [eax], edx; ret ; 0x00008d9b: mov dword ptr [eax], edx; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" --quality 1 0x000084b8: mov dword ptr [eax], edx; ret ;; ret ;Use ropper in Scripts#!/usr/bin/env pythonfrom ropper import RopperService# not all options need to be givenoptions = {'color' : False, # if gadgets are printed, use colored output: default: False 'badbytes': '00', # bad bytes which should not be in addresses or ropchains; default: '' 'all' : False, # Show all gadgets, this means to not remove double gadgets; default: False 'inst_count' : 6, # Number of instructions in a gadget; default: 6 'type' : 'all', # rop, jop, sys, all; default: all 'detailed' : False} # if gadgets are printed, use detailed output; default: Falsers = RopperService(options)##### change options ######rs.options.color = Truers.options.badbytes = '00'rs.options.badbytes = ''rs.options.all = True##### open binaries ####### it is possible to open multiple filesrs.addFile('test-binaries/ls-x86')rs.addFile('ls', bytes=open('test-binaries/ls-x86','rb').read()) # other possiblityrs.addFile('ls_raw', bytes=open('test-binaries/ls-x86','rb').read(), raw=True, arch='x86')##### close binaries ######rs.removeFile('ls')rs.removeFile('ls_raw')#
2025-04-17./Ropper.py --file /bin/ls --set nx ./Ropper.py --file /bin/ls --unset nx ./Ropper.py --file /bin/ls --inst-count 5 ./Ropper.py --file /bin/ls --search "sub eax" --badbytes 000a0d ./Ropper.py --file /bin/ls --search "sub eax" --detail ./Ropper.py --file /bin/ls --filter "sub eax" ./Ropper.py --file /bin/ls --inst-count 5 --filter "sub eax" ./Ropper.py --file /bin/ls --opcode ffe4 ./Ropper.py --file /bin/ls --opcode ffe? ./Ropper.py --file /bin/ls --opcode ??e4 ./Ropper.py --file /bin/ls --detailed ./Ropper.py --file /bin/ls --ppr --nocolor ./Ropper.py --file /bin/ls --jmp esp,eax ./Ropper.py --file /bin/ls --type jop ./Ropper.py --file /bin/ls --chain execve ./Ropper.py --file /bin/ls --chain "execve cmd=/bin/sh" --badbytes 000a0d ./Ropper.py --file /bin/ls --chain "mprotect address=0xbfdff000 size=0x21000" ./Ropper.py --file /bin/ls /lib/libc.so.6 --console [Assemble/Disassemble] ./Ropper.py --asm "jmp esp" ./Ropper.py --asm "mov eax, ecx; ret" ./Ropper.py --disasm ffe4 [Search] ./Ropper.py --file /bin/ls --search ? any character % any string Example: ./Ropper.py --file /bin/ls --search "mov e?x" 0x000067f1: mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax 0x00006d03: mov eax, esi; pop ebx; pop esi; pop edi; pop ebp; ret ; 0x00006d6f: mov ebx, esi; mov esi, dword ptr [esp + 0x18]; add esp, 0x1c; ret ; 0x000076f8: mov eax, dword ptr [eax]; mov byte ptr [eax + edx], 0; add esp, 0x18; pop ebx; ret ; ./Ropper.py --file /bin/ls --search "mov [%], edx" 0x000067ed: mov dword ptr [esp + 4], edx; mov edx, dword ptr [ebp + 0x14]; mov dword ptr [esp], edx; call eax; 0x00006f4e: mov dword ptr [ecx + 0x14], edx; add esp, 0x2c; pop ebx; pop esi; pop edi; pop ebp; ret ;
2025-04-07Like SCORM, quizzes, videos, and assignmentsRobust reporting and analytics to track learner progressIntegration with third-party tools such as Google Apps, Microsoft 365, BigBlueBotton and ZoomPros:Community support: With thousands of plugins available, you can extend Moodle’s functionality to match almost any requirement. The large, active community ensures constant updates and security patches.Scalability: Whether you’re running a small course or a massive online university, Moodle can handle it.Multilingual support: Moodle supports over 100 languages, making it a great option for international institutions.Cons:The user interface, while functional, may seem outdated and less intuitive for some users.Setting up and managing a Moodle site can require technical expertise, especially if self-hosting.Best for Universities, online schools, K-12 institutions, and corporate training programs.Open edXOpen edX is an open-source Learning Management System (LMS), built to handle large-scale online education. Developed by Harvard and MIT, perfect for institutions or companies that want to offer courses on a global scale; whether it’s 100 or 100,000 learners, Open edX can handle it.Open edX is one of the best open-source LMS platforms for delivering large-scale online learning software solutions. Its advanced features and scalability make it ideal for institutions that want a free LMS with robust course authoring tools and global reach.It lets you create interactive courses with videos, quizzes, forums, and peer assessments to keep learners engaged. You can also track student performance, engagement, and course progress with detailed reports to improve the learning experience. Open edX supports both self-paced and instructor-led courses, allowing organizations to offer scalable learning solutions to a global audience. You can use open edX for small educational projects or scale it to serve millions of learners. It’s suitable for various environments, from schools to corporate training. Being open-source, you can also modify it to meet your specific needs.Open edX offers a variety of tools for interactive learning—video lectures, quizzes, discussion forums, and peer assessments—helping educators build engaging and comprehensive courses. You can also integrate Open edX with tools like Google Analytics, payment gateways, and other learning management systems.Key Open edX Features:Advanced course authoring tools with a visual editorSupport for MOOCs (Massive Open Online Courses), blended learning, and self-paced coursesBuilt-in analytics to monitor learner engagement and performanceCustomizable dashboards for both students and educatorsIntegration with third-party services like Zoom, Google Analytics, and e-commerce platformsPros:Scalability: Open edX is perfect for large-scale online learning environments, handling thousands of students across multiple courses.Customizable: As an open-source LMS, it offers extensive customization
2025-04-13A popular course for adult English learners. With video English lessons and 1000s of activities, you can learn cultural facts and English language skills to adapt to life in the United States.Alongside online courses in grammar, vocabulary, and pronunciation, USA Learns has a helpful U.S. Citizenship course. This will provide you with all the information, language practice, and resources you’ll need to prepare for life as a U.S. citizen.⭐️⭐️⭐️User reviews“USA Learns is the best website to learn English free! I am learning a lot.” Martina – USA Learns“This is an excellent site to learn English or if you want to have perfect pronunciation.” Joao – USA LearnsPros and consProsCovers English language skills and civic knowledge required for citizenship.Free and government-sponsored.ConsGeared towards U.S. learners only.Price: FreeFlexibility: Self-pacedCertification: No official certificateCompletion time: Varies by learner (each course has 5 – 20 units with multiple video lessons per unit)Level: Beginner to intermediateRecommended resources:USA Learns Citizenship courseLife skills for ESL learners5. edX: Best for college-level coursesFounded by Harvard and MIT, edX is a trusted platform for online education. You can find a lot of college-level courses here, created and taught by actual professors from top universities.The courses aren’t free, but they are definitely cheaper than an actual college course. You can also achieve a verified certificate when you complete one. The course materials are all pre-recorded, so students can learn at their own pace. However, all assignments are due when the course ends.⭐️⭐️⭐️User reviews“I have been a student since the early days of edX. I have learned so much from high-quality courses delivered on the edX platform, taught by top-notch universities and industry partners all over the world. In the COVID19 #stayhome season, edX gave more learning opportunities. I cannot recommend edX enough!” 5/5* David C – Trustpilot“This is probably one of the best
2025-04-09