1,710 reputation
1415
bio website f-hauri.ch
location Switzerland
age 49
visits member for 2 years, 5 months
seen Apr 12 at 21:55

I'm an old open-source independent hacker,

concerned about concepts of ethical hacking, teaching and sharing.

I like to play with shell, perl, lisp (sometime), sed and lot of other languages/environments.

Co-system administrator in several configurations, after various SMEs, I like to sometimes take time to focus on methods that I can improve or re-create (for example to change the level of abstraction).

In this, surfing on differents StackExchange's sites is a good way to boost my inspiration!


Mar
22
comment Easy explanation of SSL client certificates for a developer
You must keep in mind user is stupid enough! And no: they could even be already hacked and mitm authority cert already pushed in his trusted list... The real problem is that your server will register mitm client cert!
Mar
22
comment Does Wifi encryption create a private tunnel between the adapter and the accesspoint?
I want to answer "No", but.. Body must be at least 30 characters...
Mar
10
comment uploading photos to cloud from an infected device
Is the cloud already virus free?
Feb
5
comment Linux-based Turla trojan
I've edited my answer, adding a checklist. Please have a look and feel free to comment.
Feb
4
comment Linux-based Turla trojan
@AndréDaniel APT advanced persistent threat don't require root privilege (but let attacker, time to find a way of elevation...)
Feb
4
comment Linux-based Turla trojan
After some tests, research and discuss. I've posted a log edit to my answer today, with a checklist todo. Please read and comment
Dec
20
comment Linux-based Turla trojan
Of course, this sample could be perfected by using openssl instead of netcat... But the method would stay same.
Nov
28
comment Hacked Ubuntu server, probably hacked commands (netstat, ps, …), how to replace them?
You could try my little ddosBotKiller I recently wrote for this, and let my know if it work.
Nov
3
comment How to prove to friend I have solution to puzzle (without revealing it)?
Hmm sorry, I've rewrite @domen right answer. (Yes I think it is THE answer. domen, if you post your own, I will drop mine).
Oct
30
comment How do I know if my computer is being used for a botnet-based DDoS attack?
The version of my published tool is more flexible.
Oct
17
comment Can “cat-ing” a file be a potential security risk?
Not really, but you could use many different terminal implementation. XTerm could be switched between vt100 and tektronix mode, wich have totally different window-manipulation control sequences.
Oct
13
comment How can I find subdomains of a site?
You could even ask google! But this won't be a complete list!
Aug
30
comment Why do so many cracking attempts originate from China?
It's maybe your neighbor which hide his own address by spoofing chinese IP address.
Jul
19
comment What defines a programming language as useful for hacking?
@Luc: bash is a scripting language but it's also a powerfull user environment. You could make a lot of succesives tries against your goal, than finaly dump the history to your prefered editor ...to begin your work/script. You could even quickly edit temporary scripts, use myFunc() { ...; } on command line, create immediate loops, and so on...
Jul
6
comment Difference between binary malware and script-based malware?
In interpreted language, the script is not compiled, but interpreted! But the interpreter is compiled for each architecture. See also: Interpreted languages
Jun
2
comment How do you stop a hacker when their IP address is 0.0.0.0?
wordfence is a wordpress plugin. Have a look at you http server logs!
May
20
comment Correct way to get a number from 0-9 from a random byte?
@CodesInChaos The question seem more theoretical. Anyway someone could work on old firmware where modern PRNG simply don't exist... ( In his question, Johnny don't speak about modulo but divide by 25, which have probably not same cost ;-)
May
20
comment Correct way to get a number from 0-9 from a random byte?
Your first method use 1,02 bytes for 1 unbiaised number, your second method use 20 bytes for 1 near unbiaised number... Please have a look at my method that use only 0.8 bytes for 1 unbiaised number!
May
20
comment Correct way to get a number from 0-9 from a random byte?
@AndreasKrey Hmm, no: By using split you have 2x63% = 125% chances of having a correct number, while instead you only obtain 98% chance by each byte read from random generator.
Apr
30
comment Can “cat-ing” a file be a potential security risk?
Hmmm I agree, @mr.spuratic's answer is rich. But I bring useable tools to make tests easier, (hope you've tried it)... Anyway I got my 1st gold medal \@SO with this answer! So it's good! ;-). ( P.S: If some problems with function, maybe playing with timeout (-t .01) parameter could help )