UNIVERSIDAD NACIONAL EXPERIMENTAL
"SIMÓN RODRÍGUEZ"
NÚCLEO PALO VERDE

CONTENIDO PROGRAMÁTICO

TEMA 1: GENERALIDADES.

1. DEFINICIÓN DE FINANZAS.
2. CONCEPTO DE FINANZAS INTERNACIONALES.
3. IMPORTANCIA DE LAS FINANZAS INTERNACIONALES.
4. NOMENCLATURA USADAS EN LAS FINANZAS INTERNACIONALES.
5. VALOR DE CAMBIO CON RESPECTO AL DÓLAR Y AL EURO.
6. TIPOS DE OPERACIONES INTERNACIONALES.
7. VENTAJAS Y DESVENTAJAS.

TEMA 2: BALANZA DE PAGOS.

1. CONCEPTO, CARACTERÍSTICAS, TIPOS DE CUENTAS.
2. REGISTRO DE LAS OPERACIONES CONTABLES.
3. PROBLEMAS EN EL REGISTRO DE LAS OPERACIONES EN LA BALANZA DE PAGOS.
4. ANÁLISIS DE LOS EFECTOS DE LA BALANZA DE PAGOS.
5. DESCRIPCIÓN DE LA BALANZA DE PAGOS EN VENEZUELA DESDE EL AÑO 2005 HASTA EL PRESENTE.

TEMA 3: SISTEMA MONETARIO INTERNACIONAL.

1. CONCEPTO DEL SISTEMA MONETARIO INTERNACIONAL.
2. SISTEMA PATRÓN ORO: DEFINICIÓN Y FUNCIONAMIENTO.
3. SISTEMA BRETÓN WOODS: CONCEPTO Y CARACTERÍSTICAS, COMPORTAMIENTO DESDE 1944 HASTA EL PRESENTE.
4. INSTITUCIONES FINANCIERAS INTERNACIONALES: FONDO MONETARIO INTERNACIONAL: SU CREACIÓN, FUNCIONES, TIPOS DE SERVICIO QUE PRESTA, ROL DE ESTOS ORGANISMOS A NIVEL GLOBAL EN LOS ÚLTIMOS AÑOS.
5. BANCO MUNDIAL: CREACIÓN, FUNCIONES, TIPOS DE SERVICIO QUE PRESTA Y ROL DE ESTE ORGANISMO MUNDIAL EN LOS ÚLTIMOS TIEMPOS HASTA EL PRESENTE.
6. BANCO INTERNACIONAL DE PAGO (COMPENSACIÓN): ACUERDO DE BASILEA: SU CREACIÓN, FUNCIONES Y TIPOS DE SERVICIO QUE PRESTA.
7. SISTEMA MONETARIO EUROPEO: CREACIÓN, ESTRUCTURA, FUNCIONES Y TIPOS DE SERVICIO QUE PRESTA.
8. LA MONEDA EURO: COTIZACIÓN, ESTRUCTURA (CANASTA DE VARIAS MONEDAS).
9. DERECHO ESPECIAL DE GIRO: CONCEPTO, FUNCIONES Y ESTRUCTURA.

TEMA 4: MERCADO CAMBIARIO.

1. CONCEPTO DE DIVISA.
2. MERCADO DE DIVISAS.
3. OPERACIONES DE CAMBIO EN EL MERCADO INTERNACIONAL.
4. TIPOS DE COTIZACIONES DE CAMBIO.
5. CONTRATOS A FUTURO (FORWARD): CONCEPTO, FUNCIONES Y TIPOS DE CONTRATOS.
6. SISTEMA CAMBIARIO DE BANDAS: DEFINICIÓN Y FUNCIONAMIENTO.
7. RIESGO CAMBIARIO: CONCEPTO, ELEMENTOS FUNDAMENTALES DEL RIESGO CAMBIARIO: POSICIÓN CORTA Y POSICIÓN LARGA, TIPOS DE RIESGOS DE CAMBIO: TRANSACCIÓN DE BALANCE Y ECONÓMICO, ENDEUDAMIENTO EMPRESARIAL EN MONEDA EXTRANJERA.
8. COMPORTAMIENTO DEL MERCADO CAMBIARIO EN VENEZUELA DESDE 2005 HASTA EL PRESENTE.

TEMA 5: MERCADO FINANCIERO INTERNACIONAL.

1. CONCEPTO Y FINALIDAD.
2. ESTRUCTURA DEL MERCADO FINANCIERO INTERNACIONAL.
3. TIPOS Y FUNCIONAMIENTO DE LOS CRÉDITOS INTERNACIONALES. (TRAER MODELO).
4. MERCADO DE EURODÓLARES: TIPOS Y FUNCIONAMIENTO (TRAER MODELO).
5. MERCADO INTERNACIONAL DE BONOS: CLASIFICACIÓN DEL MERCADO DE BONOS, ESTRUCTURA Y FUNCIONAMIENTO.
6. MERCADO DE EUROCRÉDITOS: ESTRUCTURA Y FUNCIONAMIENTO.

TEMA 6: FINANCIAMIENTO DEL COMERCIO INTERNACIONAL.

1. CONCEPTO Y FINALIDAD.
2. CARTA DE CRÉDITO: DEFINICIÓN, TIPOS, MODALIDADES, VENTAJAS Y DESVENTAJAS (TRAER MODELO).
3. COBRO DOCUMENTARIO: CONCEPTO Y TIPOS (TRAER MODELO).
4. ACEPTACIÓN BANCARIA: CONCEPTO Y TIPOS. (TRAER MODELO).
5. FACTORIZACIÓN: DEFINICIÓN Y TIPOS (TRAER MODELO).
6. FORFETIZACIÓN: CONCEPTO Y TIPOS (TRAER MODELO).
7. ARRENDAMIENTO INTERNACIONAL: CONCEPTO Y TIPOS (TRAER MODELO).
8. PERMUTA INTERNACIONAL: CONCEPTO Y TIPOS (TRAER MODELO).

TEMA 7: MERCADO BURSÁTIL INTERNACIONAL.

1. MERCADO WALL STREET (NEW YORK): FUNCIONAMIENTO Y TIPOS DE OPERACIONES.
2. MERCADO DEL ORO: FUNCIONAMIENTO Y TIPOS DE OPERACIONES.
3. DEUDA EXTERNA MUNDIAL: MERCADO DE LA DEUDA EXTERNA LATINOAMERICANA, TIPOS DE TÍTULOS QUE SE COTIZAN Y OPERACIONES; PLAN BRADY: CONCEPTO, VENTAJA Y DESVENTAJAS.
4. DEUDA EXTERNA VENEZOLANA: COMPORTAMIENTO DESDE 1983 HASTA NUESTROS DÍAS.
5. CLUB DE PARÍS: FUNCIONAMIENTO, VENTAJAS Y DESVENTAJAS.
6. MERCADO DE TÍTULOS ADR Y GDR: CONCEPTO Y FUNCIONAMIENTO DE ESTOS TÍTULOS.

TEMA 8: INVERSIÓN EXTERNA DIRECTA.

1. CONCEPTO.
2. EFECTOS DE LA INVERSIÓN EXTERNA DIRECTA EN LA BALANZA DE PAGOS EN EL PAÍS RECEPTOR Y DEL PAÍS INVERSOR.
3. LA EMPRESA MULTINACIONAL: DEFINICIÓN, CARACTERÍSTICAS, VENTAJA Y DESVENTAJAS DE SU INSTALACIÓN EN EL PAÍS.
4. FINANCIAMIENTO DE CASA MATRIZ A FILIAL Y VICEVERSA.
5. ASOCIACIONES ESTRATÉGICAS: CONCEPTO Y FUNCIONAMIENTO EN VENEZUELA (TRAER 02 MODELOS DE CASOS EN NUESTRO PAÍS).
6. COMPORTAMIENTO DE LA INVERSIÓN EXTRANJERA DIRECTA EN VENEZUELA DESDE 2005 HASTA NUESTROS DÍAS.

martes, 14 de abril de 2020

HOW TO HACK A FACEBOOK ACCOUNT? STEP BY STEP

Phishing is the way to obtain sensitive information such as usernames, passwords, and credit card details or any other confidential information, often for malicious reasons, by disguising as a trustworthy entity in an electronic communication. Phishing is typically carried out by several ways like email spoofing or instant messaging, and it often directs users to enter personal information at a fake website, the look and feel of which are almost identical to the legitimate one. In this tutorial, I will be showing how to hack a facebook account through phishing.

SO, HOW TO HACK A FACEBOOK ACCOUNT?

There are few techniques by which you can hack a facebook account but here the easiest way we'll discuss.

REQUIREMENTS

  1. Phisher Creator ( Fake page generator)
  2. Hosting ( To host a fake page). Either you can purchase one or also can use free hosting like 110mb.com. But in free hosting, the account will be suspended after a few logins.

STEPS TO FOLLOW

  1. Download phisher creator and run it.
  2. As you run it, you'll see a screen like the shown below. Here you can type the fields as I have done. 
  3. Once you hit the Create Phisher button, it'll create a fake facebook index page and fb_login.php file in the output folder.
  4. Now you need to upload these both files index.html and fb_login.php to the hosting account.
  5. After uploading the file, open the index.html file path. It will open up a page like same facebook page as you can see below.
  6. We're all done, now we just need to copy the URL of our fake page and distribute it to the victims, you just have to trick them with your social engineering that how you convenience them to open this URL to login facebook. Once someone tries to login through your fake facebook page URL, you'll get their account username and password in the log_file.txt in the same directory of hosting where you have uploaded index.php and fb_login.php.
Hope it'll work fine for you and you have learned how to hack a facebook account. If you find any question or query related to this, feel free to comment below or you can also follow another way that might work well for you to hack facebook account.

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RenApp: The Ultimate File Renaming App



Are you tired of managing your tens of thousands of files like jpgs, pngs, or others and you want a way to manage them as quick as possible then RenApp is solution for all problem.
RenApp lets you change names of many files of a particular type to a common name with added numbering. So no more time wasting in file management just four clicks and your files will be ordered.

Beside that RenApp can clean your folders and subfolders from backup files of .bak or .*~ extension. Removing backup files in order to make space available manually is a tedious work and can take lots of time but why do it that we've got RenApp just locate the folder and click remove it'll remove them all from that folder and its subfolders. 

Some of the features of RenApp are as:
  •    Rename files to a common name.
  •    Rename files of different extensions to a common name in one shot
  •    Remove backup files from folder and subfolders.
R  RenApp is free and Opensource, written in Python with QT interface. Check out the source code at sourceforge.


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lunes, 13 de abril de 2020

Save Your Cloud: DoS On VMs In OpenNebula 4.6.1

This is a post about an old vulnerability that I finally found the time to blog about. It dates back to 2014, but from a technical point of view it is nevertheless interesting: An XML parser that tries to fix structural errors in a document caused a DoS problem.

All previous posts of this series focused on XSS. This time, we present a vulnerability which is connected another Cloud Management Platform: OpenNebula. This Infrastructure-as-a-Service platform started as a research project in 2005. It is used by information technology companies like IBM, Dell and Akamai as well as academic institutions and the European Space Administrations (ESA). By relying on standard Linux tools as far as possible, OpenNebula reaches a high level of customizability and flexibility in hypervisors, storage systems, and network infrastructures. OpenNebula is distributed using the Apache-2 license.


OpenNebula offers a broad variety of interfaces to control a cloud. This post focuses on Sunstone, OpenNebula's web interface (see Figure 1).

Figure 1: OpenNebula's Sunstone Interface displaying a VM's control interface

Before OpenNebula 4.6.2, Sunstone had no Cross-Site Request Forgery (CSRF) protection. This is a severe problem. Consider an attacker who lures a victim into clicking on a malicious link while being logged in at a private cloud. This enables the attacker to send arbitrary requests to the private cloud through the victims browser. However, we could find other bugs in OpenNebula that allowed us to perform much more sophisticated attacks.

Denial-of-Service on OpenNebula-VM

At its backend, OpenNebula manages VMs with XML documents. A sample for such an XML document looks like this:
<VM>
   <ID>0</ID>
   <NAME>My VM</NAME>
   <PERMISSIONS>...</PERMISSIONS>
   <MEMORY>512</MEMORY>
   <CPU>1</CPU>
   ...
</VM>
OpenNebula 4.6.1 contains a bug in the sanitization of input for these XML documents: Whenever a VM's name contains an opening XML tag (but no corresponding closing one), an XML generator at the backend automatically inserts the corresponding closing tag to ensure well-formedness of the resulting document. However, the generator outputs an XML document that does not comply with the XML schema OpenNebula expects. The listing below shows the structure that is created after renaming the VM to 'My <x> VM':
<VM>
   <ID>0</ID>
   <NAME>My <x> VM</x>
      <PERMISSIONS>...</PERMISSIONS>
      <MEMORY>512</MEMORY>
      <CPU>1</CPU>
      ...
   </NAME>
</VM>
The generator closes the <x> tag, but not the <NAME> tag. At the end of the document, the generator closes all opened tags including <NAME>.

OpenNebula saves the incorrectly generated XML document in a database. The next time the OpenNebula core retrieves information about that particular VM from the database the XML parser is mixed up and runs into an error because it only expects a string as name, not an XML tree. As a result, Sunstone cannot be used to control the VM anymore. The Denial-of-Service attack can only be reverted from the command line interface of OpenNebula.

This bug can be triggered by a CSRF-attack, which means that it is a valid attack against a private cloud: By luring a victim onto a maliciously crafted website while logged in into Sunstone, an attacker can make all the victim's VMs uncontrollable via Sunstone. A video of the attack can be seen here:

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Insecurities Of WhatsApp's, Signal's, And Threema's Group Chats

Recently, the theoretical and practical analysis of secure instant messenger protocols received much attention, but the focus of prior evaluations mostly lay in one-to-one communication. In this blog post we want to presents the results of our work that focuses on group chat protocols of three major instant messenger applications; namely Signal, WhatsApp, and Threema.

In this blog post, we aim to focus on the practical impact and the found weaknesses identified by our analysis. The interested reader may also look into our paper for more details.


Our Aim and What We Were Looking For

End-to-end encryption protects the confidentiality of communication that is forwarded via central servers to the designated receivers. As a consequence, neither parties on the network route of the messages, nor the provider of the central server (e.g. the WhatsApp server) should be able to read any information out of the observation of the communication. In particular, no other user of the application should have access to the communication. Further it might be desirable to require that also the messages' integrity is end-to-end protected and that a sender is informed about the delivery state of sent messages.
Delivery state information in Signal (upper screenshot) and WhatsApp (lower screenshot)

In a two party scenario, this analysis is rather fixed to two components of the protocol: the key establishment between both parties and the communication channel protection using the established key (mostly consisting of an encryption algorithm and a scheme for providing integrity like MACs or signature schemes).

Regarded attackers


In a group setting, the same attackers apply (network, provider, other users). However the requirements for secure communication differ. It is further necessary that only group members can write to and read content from the group. Additionally, only administrators of the group are able to add new members.

In addition to these standard requirements, we also evaluated the protocols' security guarantees if the client's secrets were revealed (forward secrecy and future secrecy).

Our Approach

We analyzed the mentioned protocols by reading the source code and debugging the apps. We also used alternative open source implementations of Threema and WhatsApp as a help and we traced the network traffic. When using alternative implementations, we only took incoming traffic into account, which was generated by official applications. Thereby we extracted the protocol descriptions and evaluated them regarding the defined requirements.

Our Findings

In WhatsApp and Threema, the provider was able to manipulate the set of members. Threema only allowed the provider to rewind the set of members to a previous state. As a consequence previously removed members could have been added to the group again. The WhatsApp provider is able to arbitrarily manipulate the member set. Thereby further members and administrators can be added to the group. Since the authenticity of group manipulation is not protected, the WhatsApp provider can set the real group administrator as the source of manipulation even though this administrator was not active.

Since Signal's key exchange protocol provides future secrecy, we also evaluated the protocol's ability to recover into a secure group state after a member's state was compromised. The essential weakness here is that a sender only needs to know the static group ID to send a message to the group. If a group member receives a message with the correct group ID, no verification regarding the current member set takes place but the message is directly added to the group communication. Consequently it is sufficient to retrieve the group ID in order to send messages to the group. Since Signal treats content messages the same way as messages for the manipulation of the group set, an attacker who knows the group ID can add herself to the group and thereby read the subsequent group communication.

In addition to this, in all cases the delivery state of sent messages was not securely provided. Threema's group chats do not inform the sender about the delivery state while Signal and WhatsApp do not protect the delivery information on the end-to-end layer. Therefore the central provider can forge this information and drop messages without letting the communicating parties detect this.

Also the order of messages was manipulable for the providers of the applications such that the provider is able to deliver the messages in a different order than they were sent. Threema's weakness of rewinding a group state results from missing replay attack protection.

Impact of Weaknesses

Even though end-to-end encryption is implemented in all analyzed applications, the central providers can largely manipulate the communication in groups and partially also read it.
In all applications, the provider can undetectably drop and reorder messages during the delivery and thereby manipulate the view of the communication such that further attacks can be obfuscated.
The central servers of WhatsApp can be used to add arbitrary users to groups and thereby receive their communication.
To achieve the same result for Signal, it suffices to retrieve the group ID. An earlier member who left the group once still knows this ID since it is static. However, in contrast to WhatsApp, the origin of the manipulation is correctly displayed in the Signal application (which was not the fact when we started our analysis).

As a result, the end-to-end protection of WhatsApp is not sufficient to reach confidentiality in groups. For Signal no future secrecy is reached in groups and Threema was vulnerable to replay attacks which resulted in further weaknesses.

Responsible Disclosure

We disclosed our findings to the developers and received varying response. Threema updated their protocol in version 3.14 such that our attacks are not feasible anymore. Moxie Marlinspike responded that Signal is "working on an entirely new group mechanism that we should be deploying soon". WhatsApp did not hold out the prospect of fixing the described vulnerabilities (Update 01/18: According to Facebook's Security Head, the invite links make a fix more difficult [1]; we proposed a way to solve this issue [2]).

[1] https://twitter.com/alexstamos/status/951169036947107840
[2] https://web-in-security.blogspot.de/2018/01/group-instant-messaging-why-baming.htmlMore information
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