full-disclosure - Break Captcha to send sms at Movistar Colombia, Movistar Ecuador and Comcel Colombia

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Date: Fri, 8 Feb 2008 18:57:23 -0500
From: Camilo <camilo.uribe@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Break Captcha to send sms at Movistar Colombia,
	Movistar Ecuador and Comcel Colombia

The captcha of the Movistar Colombia cellphone company web page[1] is
too simple I get in contact with them but don't fix it so I made a poc
to break it[2]

Movistar ecuador[3] has the same problem but it's "captcha" don't even
use an image but 4 numbers in plain text.

Comcel of Colombia don't even use captcha.

In the three cases the person who get the sms has to pay for it.

[1] http://www.movistar.com.co/portaldecontenidos/
[2] http://rapidshare.com/files/90269321/movistar.zip.html
[3] http://movistar.com.ec/contenidos/
[4] http://www.comcel.com.co/

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