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Malicioso Pixel : 
QR Attack 
Juan David Castro ( Dylan Irzi ) 
WebSecurityDev
Quien Soy? 
 @Dylan_Irzi11 
 Juan David Castro 
Investigador de Seguridad 
Desarrollador Web 
BugBounty Hunter 
CEO de W...
Agenda 
 Motivacion 
 Introducción Códigos QR 
 Phising Código QR 
 Casos de Ejemplos 
 Conclusiones
Motivaciones 
 Charlas acerca de Códigos QR 
 Implementación en marketing ( Campañas Publicitarias ) 
 Implementacion P...
Códigos QR 
 (quick response code) «código de respuesta rápida» 
 es un módulo útil para almacenar información en una ma...
Estructura 
Hay 40 versiones (tamaños) de los códigos QR que constan de diferentes áreas 
que están reservadas para fines ...
Estructura QR Code 
 (1): Posición: Estas marcas, ubicadas en tres de las esquinas, permiten al 
lector reconocer la posi...
USOS
Como 
Funciona? 
Código 
Escaneo 
Ejecución
En Cuestión de Seguridad? 
 Aplicaciones de Lectores QR con ejecución de Código. 
 Explotación de Malware 
 Phising QR ...
Ejecución de Código 
 Algunas Aplicaciones Lectores QR, tienen vulnerabilidades: 
 Buffer OverFlow 
 Buffer underflow: ...
Buffer OverFlow 
 Desbordamiento de búfer: 
 Cambiamos el indicador de número de caracteres a un número más alto, 
por l...
Buffer Underflow 
 Buffer underflow: 
 Cambiamos el indicador de número 
de caracteres que se asemejan a un 
número más ...
Vulnerabilidades XSS en Lector Code 
 Se encontró uno vulnerable a evilQR java-script (QuickMark). Además, se puede deduc...
Application Test a: java-script 
parsing 
Test b: website 
redirection 
TapReader (TapBase LLC) No Parsing User confirmati...
También Existen Ataques QR Phising 
“QRishing” 
 Consiste en Suplantar el Código QR original por uno Malicioso “EvilQR” o...
La Curiosidad! 
 Mediante la colocación de códigos QR con falsos 
pretextos, los atacantes pueden atraer a los 
usuarios ...
USSD Exploit QR 
 Mediante la creación de códigos QR con 
vectores USSD, es posible la ejecución de 
Código USSD en nuest...
QR Malware!
Toolz ( SET + QRCode = Malware ) 
1) Social-Engineering Attacks 
2) QR code generator Attack vector 
3) Asignar URL Malici...
Como Protegernos!
Medidas de Seguridad 
 Con carácter general, las recomendaciones son: 
Instalar en nuestro móvil un sistema Antivirus. 
...
Fuentes y Información Adicional: 
 http://resources.infosecinstitute.com/qr-code-ussd-attack/ 
 http://www.sba-research....
Preguntas o Dudas?
Gracias!
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Malicioso Pixel - Attack QR Codes

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Presentación Malicioso Pixel - QR Attack,
Los códigos QR en los últimos años han venido incrementándose en uso de campañas publicitarias, siendo una de la tendencias actuales en campañas de marketing, pero que sucedería si se suplantara esos código QR, colocando una URL maliciosa, o Malware o hasta un USSD, y que tanto alcance podría tener? Y a quienes afectan este tipo de ataques? En conferencia dictare como podría afectar a una persona este tipo ataques, como realizarlos y métodos de protección de ataques por medio de códigos QR.

Published in: Internet
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  • DOWNLOAD THE BOOK INTO AVAILABLE FORMAT (New Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download Full doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download PDF EBOOK here { https://urlzs.com/UABbn } ......................................................................................................................... Download EPUB Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... Download doc Ebook here { https://urlzs.com/UABbn } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THE can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THE is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBOOK .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, CookBOOK, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, EBOOK, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THE Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THE the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THE Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
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Malicioso Pixel - Attack QR Codes

  1. 1. Malicioso Pixel : QR Attack Juan David Castro ( Dylan Irzi ) WebSecurityDev
  2. 2. Quien Soy?  @Dylan_Irzi11  Juan David Castro Investigador de Seguridad Desarrollador Web BugBounty Hunter CEO de WebSecurityDev • SEO (Search Engine Optimization). • Social Media Marketing • Growth Hacking Contacto: • dylan@websecuritydev.com
  3. 3. Agenda  Motivacion  Introducción Códigos QR  Phising Código QR  Casos de Ejemplos  Conclusiones
  4. 4. Motivaciones  Charlas acerca de Códigos QR  Implementación en marketing ( Campañas Publicitarias )  Implementacion Pay QR Codes VS Tecnología NFC  Vulnerabilidades Smartphones  Vulnerabilidades XSS
  5. 5. Códigos QR  (quick response code) «código de respuesta rápida»  es un módulo útil para almacenar información en una matriz de puntos o un código de barras bidimensional creado en 1994 por la compañía japonesa Denso Wave.
  6. 6. Estructura Hay 40 versiones (tamaños) de los códigos QR que constan de diferentes áreas que están reservadas para fines específicos.
  7. 7. Estructura QR Code  (1): Posición: Estas marcas, ubicadas en tres de las esquinas, permiten al lector reconocer la posición del código y comenzar su lectura. Para la legibilidad es importante que haya un margen blanco lo suficientemente ancho alrededor del código QR.  (2): Número de versión del código QR: En el código QR también hay información sobre la versión empleada. Hoy en día ya hay 40 variantes distintas.  (3) Alineación: Esta marca ayuda al lector a reconocer si la imagen del código está distorsionada por la perspectiva. Cuando mayor es el código, más marcas se añaden.  (4) Formato: Con ayuda de esta información, el lector QR reconoce el formato de datos usado: si es una entrada de calendario, datos de contacto, una dirección de Internet, etc.  (5) Sincronización: Entre las tres marcas de posición hay unas líneas punteadas, que indican el tamaño de la rejilla de la matriz.
  8. 8. USOS
  9. 9. Como Funciona? Código Escaneo Ejecución
  10. 10. En Cuestión de Seguridad?  Aplicaciones de Lectores QR con ejecución de Código.  Explotación de Malware  Phising QR Code  USSD QR Code
  11. 11. Ejecución de Código  Algunas Aplicaciones Lectores QR, tienen vulnerabilidades:  Buffer OverFlow  Buffer underflow:  XSS ( Cross Site Scripting )  URL Redirection  USSD Execution
  12. 12. Buffer OverFlow  Desbordamiento de búfer:  Cambiamos el indicador de número de caracteres a un número más alto, por lo que el dispositivo de decodificación intenta decodificar partes de la carga en forma de datos (si es que puede incluso cambiar el relleno ganamos espacio valioso para la inclusión de datos adicionales).
  13. 13. Buffer Underflow  Buffer underflow:  Cambiamos el indicador de número de caracteres que se asemejan a un número más bajo que en el código original QR. Por lo tanto, un dispositivo de decodificación sólo debe decodificar la primera parte del mensaje, dejando fuera el resto. Esto es especialmente útil en caso de que el vínculo original que fue codificado contenía sufijos.
  14. 14. Vulnerabilidades XSS en Lector Code  Se encontró uno vulnerable a evilQR java-script (QuickMark). Además, se puede deducir que alrededor del 35% de las solicitudes que se utilizaron fueron encontrados vulnerables de redirección directa.  Estudio realizado por appsec-labs.com
  15. 15. Application Test a: java-script parsing Test b: website redirection TapReader (TapBase LLC) No Parsing User confirmation QR+ (Alexandr Balyberdin) No Parsing User confirmation QRReader (Tap Media Ltd) No Parsing Automatic Redirection Scan (QR Code City, LLC) No Parsing Automatic Redirection RedLaser (Occipital, LLC) No Parsing User confirmation i-nigma (3GVision Ltd) No Parsing Automatic Redirection BeeTagg (connvision AG) No Parsing User confirmation QR Code Reader (ShopSavvy, Inc.) No Parsing Automatic Redirection QuickMark (SimpleAct Inc.) JavaScript Execution Automatic Redirection QR+Emoji (Ching-Lan Huang) No Parsing User confirmation Bakodo (Dedoware Inc.) No Parsing User confirmation https://appsec-labs.com/portal/security-assessment-of-mobile-qr-readers-%E2%80%93-a-comparison/
  16. 16. También Existen Ataques QR Phising “QRishing”  Consiste en Suplantar el Código QR original por uno Malicioso “EvilQR” o Colocar Poster con Con Publicidad Engañosa
  17. 17. La Curiosidad!  Mediante la colocación de códigos QR con falsos pretextos, los atacantes pueden atraer a los usuarios para escanear los códigos y, posteriormente, visitar sitios web maliciosos, instalar programas, o cualquier otra acción que el dispositivo móvil admite. Se investigó la viabilidad de los ataques de phishing QR-Code, o Qrishing.
  18. 18. USSD Exploit QR  Mediante la creación de códigos QR con vectores USSD, es posible la ejecución de Código USSD en nuestro Celular.  Todos dispositivos Android corriendo Por debajo de Android 4.1.x - Jelly Bean.
  19. 19. QR Malware!
  20. 20. Toolz ( SET + QRCode = Malware ) 1) Social-Engineering Attacks 2) QR code generator Attack vector 3) Asignar URL Maliciosa 4) Ingeniería Social
  21. 21. Como Protegernos!
  22. 22. Medidas de Seguridad  Con carácter general, las recomendaciones son: Instalar en nuestro móvil un sistema Antivirus.  Mantener correctamente actualizado el Antivirus.  Mantén el Sistema Operativo de Smartphone actualizado.  Instalar aplicaciones confiables, preferiblemente descargadas directamente desde la tienda oficial de aplicaciones (Android Market).  Antes de instalar la aplicación se debe prestar atención a los permisos de seguridad que necesita la aplicación, y si no te convence, cancela la instalación e investiga el porqué necesita la aplicación ese tipo de permisos.  Si te encuentras con código QR, se debe prestar atención al lugar (website) y antes de proceder a escanear el código, verificar si es posible, por otro medio que la aplicación existe, que suele utilizar los códigos QR en sus promociones y páginas web. Por ultimo, si no ten convence demasiado, desconfía y evita realizar la lectura del código.
  23. 23. Fuentes y Información Adicional:  http://resources.infosecinstitute.com/qr-code-ussd-attack/  http://www.sba-research.org/wp-content/uploads/publications/QR_Code_Security.pdf  https://appsec-labs.com/portal/security-assessment-of-mobile-qr-readers-%E2%80%93-a-comparison/  http://www.perucrack.net/2014/09/ataque-por-medio-de-codigo-qr.html
  24. 24. Preguntas o Dudas?
  25. 25. Gracias!

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