Assembly Primer For Hackers (Part 5) Data Types
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Description: This is Part 5 of the "Assembly Language Primer for Hackers" video series. Please begin here with Part 1, if you have not already done so. In this video we will go through an in-depth primer on data types which are used in assembly. We do a live demo on how to look at data in memory using GDB for .ascii, .int, .short, .float (.data) and .comm, .lcomm (.bss) types.<br><br>Please download the VariableDemo.s code before you begin with the tutorial. <br><br><br><style type="text/css">body { background: #FFF; } </style> Part 6 of the Assembly Language Primer for Hackers is available here. Enjoy!<br><br><br><style type="text/css"> body { background: #FFF; } </style> Part 6 of the Assembly Language Primer for Hackers is available here. Enjoy!<br><br><br><style type="text/css"> body { background: #FFF; } </style> Part 6 of the Assembly Language Primer for Hackers is available here. Enjoy!<br><br><br><style type="text/css"> body { background: #FFF; } </style>
This video is part of the following groups:
1. Assembly Language Megaprimer for Linux ( 11 videos)
Comments (42)
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cr1tt3r on Fri 25 Feb 2011 Awesome vid! I've been learning so much from these! |
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Vivek-Ramachandran on Sat 26 Feb 2011 Thanks! Please let me know if you have any feedback and any request for other topics in this series. |
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equinox on Wed 02 Mar 2011 you r really great sir , i am leaning from ur videos very much . can u plz make a megaprimer about the backtrack O.S & their tools? |
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paulcantr on Sun 06 Mar 2011 These are just great. |
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atoi on Wed 09 Mar 2011 Really enjoying the videos, thanks for the hard work. |
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Null on Wed 23 Mar 2011 Those videos are perfect. Thank you very much for taking time to make them, i have learned a lot from them! I just have one question :). In this video (5th) you ask why is the float number not displayed as expected. I guess it has to do with it being a Single Precision floating point number, but i do not completely understand this. So could you please give me a tip or something, since i am new to all this and wikipedia confused me a bit! Thanks in advance, and again really appreciated work man. |
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Zukin on Wed 06 Apr 2011 Polynomial: floating points aren't precise if you're using small ones |
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Cr0neen0rC on Thu 07 Apr 2011 Love you man, thanks a lot. |
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Zukin on Sat 09 Apr 2011 Vivek you SUCK!! |
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Daemonio on Sun 17 Apr 2011 Always Nice. I would like to request you to put subtitles in your videos. It will easy the understanding of people who's not an expert in English (like me :|) |
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sekstiseks on Fri 29 Apr 2011 Vivek great tutorial! |
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Col_Loki on Fri 29 Apr 2011 I was wondering that too (the *_start+1). |
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thoth_mes on Sun 01 May 2011 These are really good.. thanks, keep up the good work.. |
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balder on Tue 17 May 2011 Great series of videos thanks, and thanks for the site |
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balder on Tue 17 May 2011 oh i also wanted to ask what the nop keyword on the first line of _start is for, cheers |
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Gripen on Mon 23 May 2011 Very nice video again. I really like the way you do these vids, and I actually learn more then at school computer science heheh. You might wanna say . as DOT and not DART or something haha :D love your accent though! |
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FuzzyNop on Thu 26 May 2011 balder, NOP keyword is a command that performs "no operation", it essential wastes a cpu cycle. You will likely see more about nops in later videos as they become very important in bypassing address space randomization :-) |
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charst46 on Sun 29 May 2011 AS usual, great info. Learning incredible amounts. There is not enough room to say how appreciated this info is. |
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madr on Wed 01 Jun 2011 Thanks, great info! |
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TheKeyMaker on Sat 18 Jun 2011 @Vivek: Very good work so far. I'm learning a lot and the way you present it gives me motivation to continue and experiment in my own. Thank's a lot for your effort. |
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Alteminor on Sun 19 Jun 2011 Excellent job. Thanks so much for these. |
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orrala on Sun 19 Jun 2011 thank you |
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Viraj on Sun 03 Jul 2011 Thank you and I really appreciate your effort..! |
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xplt on Fri 08 Jul 2011 As always! Another great movie! Thank you Vivek! |
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neo on Wed 13 Jul 2011 wonderful vivek. |
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ipatch on Wed 13 Jul 2011 Once again this video series is awesome, and this video is no exception. Awesome work! |
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security123 on Thu 21 Jul 2011 hust give me link of other tutorial which you have uploaded .really you are great mentor. |
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ericgearhart on Thu 28 Jul 2011 these videos are great man, thanks for this site and these videos. I never felt comfortable with understanding the fundamentals of exploits until I stumbled across this site. |
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purgatoroid on Thu 28 Jul 2011 About the *_start+1 thing: |
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purgatoroid on Thu 28 Jul 2011 btw, in addition you can use &HelloWorld to refer to the address of the HelloWorld string. |
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bot_master on Sun 14 Aug 2011 great... nice work |
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ins4n34u on Sat 27 Aug 2011 Thanks so much Vivek :) i hope to make it to the securitybytes 2011 conference! |
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Sceleratus on Tue 30 Aug 2011 awesome work thanks very much |
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rK on Sat 03 Sep 2011 awsome series.....btw what is as -gstab option? |
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Clint on Tue 13 Sep 2011 rK if you check out the command options like so: as --help |
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jmcboots on Wed 28 Sep 2011 Another great video. A slight oversight for the complete noob (like me!) is the -gstab option. But I did a quick search to figure it out. So its all good. |
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Erix on Mon 16 Jan 2012 hi, thanks for nice vids! |
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Mano on Thu 19 Jan 2012 Awesome. I was waiting for such tuto. Thank you so much. |
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enteon on Tue 06 Mar 2012 (gdb) x/1dw 0x00000000006000d1 |
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TLkHaxs on Sun 11 Mar 2012 Nice videos |
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Trinculo on Tue 27 Mar 2012 At 08:30, in gdb you displayed the contents of the memory location where we have the string "Helloworld" by entering |
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HoneyBunny on Mon 30 Apr 2012 Thank you very much. You are great! |


