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Reverse Engineering for Noobs Step by Step guide to crack A One Video to Audio convertor

Its been some time since I have written a reverse engineering tutorial, & I thought it would be good to cover one at the dead of night :) What I am going to teach you today, is a simple reverse engineering tutorial.We will be cracking A-one Video to Audio convertor today, with just simple cracking. You can also give a read to a step by step guide to crack Winrar to have an insight into reverse engineering & decompiling, however this one is completely different & requires little to no programming & ASM knowledge.

Disclaimer – By Reading this tutorial You agree that this tutorial is intended for educational purposes only and the author can not be held liable for any kind of damages done whatsoever to your machine, or damages caused by some other,creative application of this tutorial.

In any case you disagree with the above statement,stop here.

Requirements

• A-one Video to Audio convertor (Download from yaomingsoft.com)
• OllyDBG
• Time & Patience

Download & install A-one Video to Audio convertor. Now as you can see, its a trial version & once you try to register it, it gives an error <obviously>, & we need to find ways against it.

Now, to being with, fire up OllyDBG & load the A-one Video to Audio convertor EXE file in it.

Now, right click on

CPU window -> Search for -> All Referenced Text Strings

& in Text string window, right click -> paste the "Registration code is error" string (which pops when you input wrong serial) After you find it, double click it & navigate to the memory address.

Now, once you have reached the intended memory address, you can navigate a bit up to see the "register successful" string.

Navigating a bit above will get a simple logic which calls a specific function, & then the function returns a result which is compared to EAX

CMP EAX,1

& then jumps to 407A0F

JNZ SHORT 00407A0F

which is the "register failed" condition.

The whole scenario means that if value of EAX is anything less than or grater than one, the program will be a trial version & will not accept any invalid serial key.

Now, you can put a break point above the function call by pressing F2 & run the program, & enter the serial, the program will break & we can then navigate inside the function by pressing F7

You will get into function code. Add the breakpoint there by pressing F2 & restart the program again by pressing Ctrl + F9

Run it again & you will find that it will break it at 00406B40 (where you put the last breakpoint)

now, we will execute code step by step by pressing F8, once we go a bit down, we find

JNZ Video2Au.00406C4A

which jumps below to

POP EDI

& further we find that the value of EAX is XORed to 0.

so in order to insert a precise value into EAX, we will modify by double clicking

XOR EAX,EAX

& changing it to

MOV AL,1

which will set the accumulators value to 1 because

EAX        -    32 Bit reg <extended>
AX         -    16 Bit reg pair
AH / AL    -     8 Bit regs

where AL will represent the lower value, & setting it to one will set the accumulator to a precise value of 1, hence setting value of EAX to 1,which will lead to program being registered :)

now once you have done it, right click the code,

copy to executable-> selection.

In the coming window, right click again, save the file & you have a cracked working version of the software, paste it in program files directory & insert any serial.

it will work :D

I hope you liked it :)

like this post ? you can buy me a beer :)

Posted by XERO. ALL RIGHTS RESERVED.Source

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SEO Step by Step The Complete Beginner’s Guide to Getting Traffic from Google

SEO Step-by-Step, The Complete Beginner’s Guide to Getting Traffic from Google

Year: 2016|File Size: 0.5 MB | File Type: Pdf | Pages: 113 | Category: SEO

SEO step-by-step subtitle the complete beginner’s guide to getting traffic from Google is a beautiful website SEO related pdf book written by Caimin Jones. There are lot of webmasters who want to increase their site search engine, Google ranking and visitors but fail. It can be regarded as a true beginner's guide to SEO based on the authors own 20 year experience. As author is a sucesfull search engine optimizer and earning reasonably since a long time. It has all the things required for good and quick search engine optimization.

SEO Step-by-Step, The Complete Beginner’s Guide to Getting Traffic from Google is divided in six steps which are:

1. Choose the right keyword for your niche
2.  Create great, SEO-friendly content
3. Optimize your site
4. Social media marketing
5. Getting links to your site
6. Speed up your site

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Register in FILEICE NET with step by step guide and FILEICE NET proof of payment!!!

Hi everybody! I would like to share to you my earnings in fileice.net. Its not that much but its not really bad at all (at least for me). In my spare time I go online to look and search for ways to earn decently online.

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SEO Step by step

1. Website analysis
2. Keyword Research
3. Adding Emphasis with Header Tags
4. Adding Emphasis with Tail Tags
5. Bold, Italic effect to main keywords
6. Canonicalization
7. Competition Analysis
8. CSS Validation
9. Google Base Feeds
10. H Tags Optimization (Eg: H1, H2, H3)
11. Header Tag Optimization
12. HTML Code Clean Up & Optimization
13. Image & Hyperlink Optimization
14. In depth site Analysis
15. Link Validation
16. Meta Description Tags Optimization
17. Meta Keywords Tags Optimization
18. Navigation & Design Optimization
19. PR Sculpting
20. Robots.txt Optimization
21. Text Modification Tags Optimization
22. Title Tag Optimization
23. URL Rewrite
24. W3C Validation
25. Working on HTML Source Code
26. Link Development
27. Authoritative Submissions
28. Broken Links Checking
29. Directory Submissions
30. Extraction of Site Url’s ( Link Level Depth)
31. Internal Link Structuring
32. Link Building ( Link Bait )
33. Manual Link Request to Related Sites
34. One way link (PR4 or Greater)
35. Site Back-links count
36. Local Search Engine Optimization
37. Custom Review Submission
38. h card Integration
39. Local Search Engine Submission
40. Testimonial Submission
41. Updating pages for local searches
42. Website Usability & Conversion
43. Being Webmaster Tools account setup & monitoring
44. Google Webmaster Tools account setup & monitoring
45. Installing Usability Tools on Website
46. Monthly Website Conversion Tracking
47. Optimization for Multiple Browsers
48. Article Submission
49. Blog Comment on Relevant Blogs
50. Blog Designing for the website
51. Blog Submission
52. Classified submission
53. Creating Promotional pages on hubpages, squidoo, etc
54. Face Book Twitter Marketing
55. Integration of page bookmarking tools
56. Integration of page sharing tools
57. Paid Submission
58. Photo Sharing
59. PPT Submission
60. Press Release
61. Product Indexing on Google Base
62. Rss Feeds
63. Social Bookmarking
64. Video Submission
65. Content Writing & Optimization
66. Article Writing
67. Blog Writing
68. Content Modification
69. Press Release Writing
70. Thematically Optimization of content pages
71. Website content writing through Latent Semantic Indexing
72. Website Spell Check
73. XML Site Map Creation & Submission
74. SE Saturation Checking ( Google, Yahoo & Bing)
75. Log file analysis
76. Google, Yahoo & Bing Site Map Creation
77. Google Analytics Funnel Creation
78. Google Analytics Account Setup
79. Deep Indexing Recommendations
80. Checking server response code for each URL
81. Check Search Engine Road Blocks
82. Check PR of each url

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