SignupHide Sidebar
Username: 
Password: 
Restrict session to IP 
Statistics
47 Sites
184 Challs
8999 Posts
67668 Users
43 donations
0 Patreons
1 Shop
47 Active Sites
World of Wargame
WeChall
TheBlackSheep
Rankk
Electrica
NewbieContest
LOST-Chall
Yashira
BrainQuest
Net-Force
HackThisSite
ThisisLegal.com
elhacker.net
TryThis0ne
TDHack
+Ma's Reversing
Hacker.org
HackBBS
Root-Me
SPOJ
Revolution Elite
W3Challs
Gekkó
Webhacking.kr
Reversing.Kr
SuNiNaTaS
Hacking-Challenges
OverTheWire.org
RedTigers Hackit
Defend the Web
Mod-X
Omega Project
ae27ff
pwnable.kr
RingZer0 Team Online CTF
pwnable.tw
Hack The Box
try to decrypt
MysteryTwister
LordofSQLi
Énigmes À Thématiques
247CTF
CryptoHack
PyDéfis
PromptRiddle
PWN.TN
pwn.college
Top 10 Players
dloser
benito255
jusb3
Caesum
tehron
phoenix1204
lordOric
thefinder
Akorlith
Xaav
Last 20 Activities
scy
qianchen12
sxjjdtjt
smartstoneman
lubiq78
livinskull
MattK
randomname
Munto
iAreNubcake
Simonselles
c2FtaXI
r_karoly
David07
noother
su2ce2s
Rusheel_2244
kchima
hanhere
bulbafett
Online within 1d
36 Users
shengxiao
bulbafett
cheerfulbull
walek20
cupidvenus
scy
su2ce2s
qianchen12
sxjjdtjt
c2FtaXI
smartstoneman
fatherofphysics
MattK
livinskull
chaseleif
xseris
r_karoly
David07
Rusheel_2244
noother
more
WeChall->Challenges->Challenge: The BrownOS

Some notes  Go to the The BrownOS challenge

New syscall enabledDisappointment Thread
1 2 3
Global Rank: 1
Totalscore: 759433
Posts: 437
Thanks: 495
UpVotes: 468
Registered: 15y 57d












The User is Offline
RE: Some notes
May 23, 2018 - 14:16:48 (6y 122d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from Gizmore
May 22, 2018 - 22:31:12

Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.

Does it means BrownOS just segfaults on errors?

No, only on valid inputs.
Global Rank: 782
Totalscore: 32727
Posts: 74
Thanks: 38
UpVotes: 48
Registered: 6y 230d
Last Seen: 3y 94d
The User is Offline
RE: Some notes
May 23, 2018 - 17:27:16 (6y 122d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from Gizmore
May 22, 2018 - 22:31:12

Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.

Does it means BrownOS just segfaults on errors?

I haven't seen any mush come back that looks "segfault"-ish in nature, have you?
But I have seen a lot of "nothing" come back. Port closes, boom, thank you very much. Hmm, what could it mean?
Global Rank: 782
Totalscore: 32727
Posts: 74
Thanks: 38
UpVotes: 48
Registered: 6y 230d
Last Seen: 3y 94d
The User is Offline
RE: Some notes
May 23, 2018 - 17:35:46 (6y 122d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from dloser
May 23, 2018 - 14:16:48

Quote from Gizmore
May 22, 2018 - 22:31:12

Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.

Does it means BrownOS just segfaults on errors?

No, only on valid inputs.

BrownOS segfaults only on valid inputs??? Smile I have to rethink everything!
Last edited by l3st3r - May 23, 2018 - 18:17:50
Global Rank: 544
Totalscore: 46001
Posts: 220
Thanks: 206
UpVotes: 216
Registered: 13y 280d
space`s Avatar
The User is Offline
1
RE: Some notes
Sep 10, 2018 - 23:48:18 (6y 12d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from l3st3r
May 23, 2018 - 17:35:46

Quote from dloser
May 23, 2018 - 14:16:48

Quote from Gizmore
May 22, 2018 - 22:31:12

Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.

Does it means BrownOS just segfaults on errors?

No, only on valid inputs.

BrownOS segfaults only on valid inputs??? Smile I have to rethink everything!

This is sarcasm.
Contact only via c3BhY2VAd2VjaGFsbC5uZXQ= or PM...
Windows can be secure... but only if you don't use it Happy
Global Rank: 782
Totalscore: 32727
Posts: 74
Thanks: 38
UpVotes: 48
Registered: 6y 230d
Last Seen: 3y 94d
The User is Offline
RE: Some notes
Sep 11, 2018 - 00:42:36 (6y 12d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.


Does it indicate success?
Global Rank: 1
Totalscore: 759433
Posts: 437
Thanks: 495
UpVotes: 468
Registered: 15y 57d












The User is Offline
RE: Some notes
Sep 11, 2018 - 14:57:58 (6y 11d) Google/translate1Thank You!2Good Post!0Bad Post! link
Quote from space
Sep 10, 2018 - 23:48:18

Quote from l3st3r
May 23, 2018 - 17:35:46

...

This is sarcasm.

No, you are.

Quote from l3st3r
Sep 11, 2018 - 00:42:36

Quote from dloser
May 17, 2018 - 21:26:16

Quote from l3st3r
May 17, 2018 - 21:01:05

If the server replies immediately with no results (port closes, no data from server), does that indicate an error?

No.


Does it indicate success?

If you didn't want it to return anything, yes.
Global Rank: 23176
Totalscore: 7
Posts: 1
Thanks: 1
UpVotes: 1
Registered: 6y 259d
Last Seen: 5y 78d
The User is Offline
RE: Some notes
Jan 05, 2019 - 16:09:40 (5y 260d) Google/translate1Thank You!1Good Post!0Bad Post! link
Is service on port 61221 still online?
Global Rank: 544
Totalscore: 46001
Posts: 220
Thanks: 206
UpVotes: 216
Registered: 13y 280d
space`s Avatar
The User is Offline
1
RE: Some notes
Jan 05, 2019 - 16:17:02 (5y 260d) Google/translate2Thank You!1Good Post!0Bad Post! link
Yes
Contact only via c3BhY2VAd2VjaGFsbC5uZXQ= or PM...
Windows can be secure... but only if you don't use it Happy
Global Rank: 54
Totalscore: 255409
Posts: 155
Thanks: 131
UpVotes: 162
Registered: 16y 217d





Last Seen: 1d 21h
The User is Offline
RE: Some notes
May 01, 2020 - 13:51:12 (4y 143d) Google/translate1Thank You!1Good Post!0Bad Post! link
How many people actually tried this one lol? The fact that all solvers (except the author) gave it a difficulty of 10 is throwing me off, either it's too hard or too much work (or both) Drool
Global Rank: 782
Totalscore: 32727
Posts: 74
Thanks: 38
UpVotes: 48
Registered: 6y 230d
Last Seen: 3y 94d
The User is Offline
RE: Some notes
May 01, 2020 - 22:21:43 (4y 143d) Google/translate1Thank You!1Good Post!0Bad Post! link
Quote from quangntenemy
May 01, 2020 - 13:51:12

How many people actually tried this one lol? The fact that all solvers (except the author) gave it a difficulty of 10 is throwing me off, either it's too hard or too much work (or both) Drool

It's hard. It's work. How much is "too" much? You'll have to decide.
1 2 3
DrOptix, macplox, l3st3r, UnQuaiz, Donlon, dloser, Redknee, ckclark, tunelko, silenttrack, n0tHappy, quangntenemy, TheHiveMind, Z, balicocat, Ge0, samuraiblanco, arraez, jcquinterov, hophuocthinh, alfamen2, burhanudinn123, Ben_Dover, stephanduran89, braddie0, SwolloW, dangarbri, kalungmas have subscribed to this thread and receive emails on new posts.
1 people are watching the thread at the moment.
This thread has been viewed 704278 times.