1 min to read
Limitless from PicoCTF - Binary Exploitation
Created by: Mrx-Exploit
Source Code Review
In this section we will listen to the source code hahaha let’s see the main func
there are two variable ( index and value ) and one array , there are two input and in the end they called another func Hmmm That’s look’s normal
Damn something wrong here What is that he takes value and put it in the array with index so wierd
There is anther func called win all its function is to read what is inside flag.txt and then print it look’s easy
Pwn
Let’s try to test this program
Segmentation fault !!! Why !!?
ops i forgot it’s take int value hahaha let’s try it again
That’s looks normal right now :D
Let’s get win func addr then try to set it in the first let’s see what will happen
Awesome let’s change it to pass it in the program let’s do that with python
Awesome now time to try it
it’s doesn’t work you know why buecause it’s takes int again Hmmmm so what will happen if we change it to Decimal so let’s change it with python again easy to do with 0xDiablos :D
So easy let’s try it now but in the first let’s create flag.txt
Done let’s try it now
Cool we got it Daaaaaaaamn i told you it’s will be easy with 0xDiablos
Automated Script
I did script to automate this mission and there is comment Per line so amazing HERE
