What is API hooking?

API hooking is one of the memory-resident techniques cyber-criminals are increasingly using. The process involves intercepting function calls in order to monitor and/or change the information passing back and forth between them. There are many reasons, both legitimate and malicious, why using this might be desirable.

What is Credential API hooking?

Credential API Hooking. Adversaries may hook into Windows application programming interface (API) functions to collect user credentials. Malicious hooking mechanisms may capture API calls that include parameters that reveal user authentication credentials.

What is hooking a process?

Hooking is a technology for intercepting function calls in other processes. Hooking, as any other sufficiently powerful technology, can be used for both good (sniffers, audio/video grabbers, extension of the closed software functionality, logging and bug fixing) and bad deeds (Trojans, cracks, and keyloggers).

How does function hooking work?

Function hooking is implemented by changing the very first few code instructions of the target function to jump to an injected code. Alternatively on systems using the shared library concept, the interrupt vector table or the import descriptor table can be modified in memory.

How do you find API hooking?

Basically, the short version of that is that if you want to check for common ways of user-level API hooking, you could try to:

1. compare code in the binary file to the code in memory.
2. compare IAT start-up snapshot to current IAT.
3. compare the code pointed to be the known entries of the IAT to the actual entries.

What is inline hooking?

Inline hooking is a method of intercepting calls to target functions,which is mainly used by antiviruses, sandboxes, and malware.

What is kernel hooking?

The term hooking [5] covers a range of techniques used to alter or augment the behavior of an operating system, an application or any other software components by intercepting function calls, messages and events passed between the different software component.

What is a API call?

Application programming interfaces (APIs) are a way for one program to interact with another. API calls are the medium by which they interact. An API call, or API request, is a message sent to a server asking an API to provide a service or information.

What is inline patching?

BMC Database Automation allows you to apply a database patch during the database provisioning activity. This process is called inline patching. Inline patching is supported for both single instance home as well as grid infrastructure home.

What is trampoline hook?

A trampoline is simply a bit of code you generate that replicates the functionality of the first few bytes of the original API (which you overwrote with your jump), then jumps into the API after the bytes you overwrote. Rather than unhooking the API, calling it and rehooking it you simply call the trampoline.

What is hook on essay?

A hook is an opening statement (which is usually the first sentence) in an essay that attempts to grab the reader’s attention so that they want to read on. It can be done by using a few different types of hooks, which are a question, quote, statistic, or anecdote.

What is API hooking and how to do it?

API hooking is a technique by which we can instrument and modify the behavior and flow of API calls. API hooking can be done using various methods on Windows. Techniques include memory break point and .DEP and JMP instruction insertion.

What is an example of API hooking with detours?

As an example of API hooking with detours, I’m going to present a code sample that hooks the Winsock functions send (…) and recv (…). In these functions, I’m going to write the buffer that was sent or received to a log file before passing control over to the original function.

What are the different types of API hooks?

API hooks can be divided into the following types: Local hooks: These influence only specific applications. Global hooks: These affect all system processes.

What is hooking in Python?

This is called Hooking —the process by which an application intercepts an API call between two other applications. In the example above, the intercepting function (called a hook procedure) altered the data passed onto the recipient (the text editor), but that is not always the case.