HTB - Scanner (Challenge)
by x1rx - Friday September 6, 2024 at 02:29 AM
#1
Let's discuss the pwn challenge
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#2
(Sep 06, 2024, 02:29 AM)x1rx Wrote: Let's discuss the pwn challenge

I haven't completed the exploit part, but this should lead you; Leak heap → leak libc → off-by-one overwrite → brute-force stack alignment → return to libc → get the flag.
Thanks @paw for the rank!!
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#3
[Image: dwM3f8B.png]
http://4xura.com/wp-content/uploads/2024...bf_all.jpg

These hints should be enough to show you the path finishing the exploit part. Enjoy
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#4
(Sep 07, 2024, 03:28 AM)Axura Wrote: [Image: dwM3f8B.png]
http://4xura.com/wp-content/uploads/2024...bf_all.jpg

These hints should be enough to show you the path finishing the exploit part. Enjoy

My instance always gets fcked up! lol Smile
Thanks @paw for the rank!!
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#5
1 - heap leak
2 - libc leak
3 - rbp leak
4 - stack pivot --> new rbp with off by null
5 - rop chain
6 - hijack execution flow


All steps are done and I got the flag(while loop) but my script is unstable . When I use off by null and pivoting on stack , process crashes .

What am I missing? any hint
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#6
exp.py
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#7
this is a good initiative will like to see this 
will appreciate if got it free
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