quarta-feira, 31 de maio de 2023

eWPT - Web Application Penetration



 The eWPT - Web Application Penetration Testing Professional course from the popular eLearnSecurity Institute and INE is an advanced web penetration testing course. Prerequisites for this course Completion of the eJPT courseIs. The eWPT course is one of the most popular courses in the field of web penetration testing or web hacking. This course is usually compared to the AWAE course from Offensive-Security and the SEC542 course from SANS. This course starts from a complete beginner in the field of web penetration testing and its topics continue to an advanced level. In this course you will gain an in-depth understanding of OWASP, Burpsuite software, complete web application analysis, data collection, common bugs such as XSS and SQL Injection, Session-based vulnerabilities, as well as LFI / RFI, attacks On HTML, content management systems (CMS) penetration testing such as WordPress, penetration testing of SQL and non-SQL databases. 


Course pre requisites

Completion of the eJPT course
Course specifications
Course level: Intermediate
Time: 16 hours and 18 minutes
Includes: ‌ 30 videos | 18 labs | ‌ 15 slides
Professor: Dimitrios Bougioukas
EWPT Course Content - Web Application Penetration Testing Professional
Web Application Penetration Testing
Penetration Testing Process
Introduction
Information Gathering
Cross Site Scripting
SQL Injections
Authentication and Authorization
Session Security
Flash
HTML5
File and Resources Attacks
Other Attacks
Web Services
XPath
Penetration Testing Content Management Systems
Penetration Testing NoSQL Databases

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Exploiting Golang Unsafe Pointers


There are situations when c interacts with golang for example in a library, and its possible to exploit a golang function writing raw memory using an unsafe.Pointer() parameter.

When golang receive a null terminated string on a *C.Char parameter, can be converted to golang s tring with  s2 := C.GoString(s1) we can do string operations with s2 safelly if the null byte is there.

When golang receives a pointer to a buffer on an unsafe.Pointer() and the length of the buffer on a C.int, if the length is not cheated can be converted to a []byte safelly with b := C.GoBytes(buf,sz)

Buuut what happens if golang receives a pointer to a buffer on an unsafe.Pointer() and is an OUT variable? the golang routine has to write on this pointer unsafelly for example we can create a golangs memcpy in the following way:



We convert to uintptr for indexing the pointer and then convert again to pointer casted to a byte pointer dereferenced and every byte is writed in this way.

If b is controlled, the memory can be written and the return pointer of main.main or whatever function can be modified.

https://play.golang.org/p/HppcVpLfuMf


The return addres can be pinpointed, for example 0x41 buffer 0x42 address:



We can reproduce it simulating the buffer from golang in this way:


we can dump the address of a function and redirect the execution to it:


https://play.golang.org/p/7htJHJp8gUJ

In this way it's possible to build a rop chain using golang runtime to unprotect a shellcode.

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terça-feira, 30 de maio de 2023

Ophcrack


" Ophcrack is an open source (GPL license) program that cracks Windows LM hashes using rainbow tables. The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows. There is also a Live CD version which automates the retrieval, decryption, and cracking of passwords from a Windows system. Rainbow tables for LM hashes of alphanumeric passwords are provided for free by the developers. These tables can crack 99.9% of alphanumeric passwords of up to 14 characters in usually a few seconds, and at most a few minutes. Larger rainbow tables (for LM hashes of passwords with all printable characters, including symbols and space) are available for purchase from Objectif Securité. Starting with version 2.3, Ophcrack also cracks NT hashes. This is necessary if generation of the LM hash is disabled (this is default on Windows Vista), or if the password is longer than 14 characters (in which case the LM hash is not stored)." read more...

Website: http://ophcrack.sourceforge.net

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Hackerhubb.blogspot.com

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The OWASP Foundation Has Selected The Technical Writer For Google Season Of Docs

The OWASP Foundation has selected the technical writer for Google Season of Docs by Fabio Cerullo


The OWASP Foundation has been accepted as the organization for the Google Seasons of Docs, a project whose goals are to give technical writers an opportunity to gain experience in contributing to open source projects and to give open-source projects an opportunity to engage the technical writing community.

During the program, technical writers spend a few months working closely with an open-source community. They bring their technical writing expertise to the project's documentation, and at the same time learn about open source and new technologies.

The open-source projects work with the technical writers to improve the project's documentation and processes. Together they may choose to build a new documentation set, or redesign the existing docs, or improve and document the open-source community's contribution procedures and onboarding experience. Together, we raise public awareness of open source docs, of technical writing, and of how we can work together to the benefit of the global open source community.

After a careful review and selection process, the OWASP Foundation has picked the primary technical writer who will work along the OWASP ZAP Team for the next 3 months to create the API documentation of this flagship project.

Congratulations to Nirojan Selvanathan!

Please refer to the linked document where you could look at the deliverables and work execution plan.
https://drive.google.com/open?id=1kwxAzaqSuvWhis9Xn1VKNJTJZPM2UV20



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