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Bugtraq - Submission by Dr-Hack "Reverse Character"
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Offline Dr-Hack  
#1 Posted : Thursday, September 15, 2005 11:37:40 AM(UTC)
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Submission on Securityfocus.com on this Subject @ http://securityfocus.com/archive/1/410727/30/0/threaded



Name : Dr-Hack

Email : [email protected]

Subject : Character Manipulation in Online Systems.

Message :

Applicable to Almost all the discussion forums or places which require you an Email System...

Risk : Medium
(being just 18 years old, i can not write a very attractive article, but i will try my best)

I discovered this Trick after playing with Orkut, then tried it on some other Portals For INstance it has been checked with

Dotnetnuke
Rainbow Portal
VBBulletin
Invision Power Board
Orkut
Invision Power Board v2.0.4

Reaction :

THere is a "Reverse Character" which works on windows XP/200/2003 and NT Operating systems (not verfied on other OS's)
this "reverse Character is UNI-Code used to change the character line from left to the right
but if used in the forums and other places which require a "Username" it simply Vanishes as a Blank Character and the FORUM/PORTAL never generates an error of Illegal Character rather it simply accepts it ... but the actual Problem comes after this ...
few cases :
° Blank UserNames (neglecting the check of minnimum 3 visible characters)
° This is the most effected scenario ... any where your "reverse character" will come it will simply reverse the order of text on its front or back ... so if there is Module showing online users from last 60 Hours and your name comes on the first line then it will simply Reverse the Text of the First Line, Not only for YOu but also for everyuser visiting the forum.
° It messes up with Forum/Portal Newsletters and Notifications via Email's as you username gets used in many places ...
° SIte Admin dont like such effects but rather then deleting the account its wise to substitute the name with there email ID (before the "@" part )
Example text below.
‮Example Text Below.

The 2nd line used the Reverse Character and the reverse Character is placed in the next line copy from there.
‮
Or Download the Text File containing reverse Character for Convenience
File Attachment(s):
reverse-cha.txt (1kb) downloaded 264 time(s).

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Offline Dr-Hack  
#2 Posted : Thursday, September 15, 2005 12:51:23 PM(UTC)
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Well I have found the ASCII representation of the Reverse Character...


May be someone can pop few lines i am bored here all alone


This has the same affect as the Reverse Character but Visible Smile to enter not after wards ‮





Thanks
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Offline ABDK  
#3 Posted : Thursday, February 17, 2011 8:24:33 PM(UTC)
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‮wow man amazing as well as intersting

What a nyc sharing

thnkx alot!
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Offline Naveed AHmed  
#4 Posted : Thursday, February 17, 2011 8:29:51 PM(UTC)
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wow man amazing as well as intersting

What a cyn sharing

thankxx alot!
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Offline Dr-Hack  
#5 Posted : Friday, February 18, 2011 12:54:34 AM(UTC)
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Offline ABDK  
#6 Posted : Sunday, February 20, 2011 6:47:01 PM(UTC)
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Hey Drhack Help
what is it for &#8238 and can we that how u got this?
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Offline Dr-Hack  
#7 Posted : Monday, February 21, 2011 6:45:23 AM(UTC)
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Originally Posted by: abidkhan Go to Quoted Post
Hey Drhack Help
what is it for &#8238 and can we that how u got this?



sorry i didnt understand you . ..can you explain what you trying to say ?
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Offline ABDK  
#8 Posted : Monday, February 21, 2011 8:06:05 AM(UTC)
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ABDK


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Originally Posted by: Dr-Hack Go to Quoted Post
Well I have found the ASCII representation of the Reverse Character...


May be someone can pop few lines i am bored here all alone


This has the same affect as the Reverse Character but Visible Smile to enter not after wards ‮





Thanks

actually dont get this wht it is?.../ :awink

oh my bad!Blackened eye can we know that how u got this reverse character?.../
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Offline Dr-Hack  
#9 Posted : Monday, February 20, 2012 10:11:35 AM(UTC)
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Dr-Hack


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lol.. just saw this post of yours Big Grin ..
ahh its soo cold, lol . well As i wrote above its used in OS to make the text appear from right to left , so i just got hold of some Arabic application source so with in the source i found this Uni character Wink
fun part is that this thing still works tongue :p
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Offline ABDK  
#10 Posted : Tuesday, February 21, 2012 12:46:03 PM(UTC)
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Got it now.. Wink
Well thanks for sharing this Uni character with us.
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Offline Dr-Hack  
#11 Posted : Tuesday, February 21, 2012 6:06:24 PM(UTC)
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Dr-Hack


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Yeah, it still holds valid so why dont you try using it as a username somewhere to see Wink
Wondering if such more characters can be discovered because things are getting to limited with soo many checks.


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