gadgets | Collection of gadgets for Profiles and other RNT
kandi X-RAY | gadgets Summary
kandi X-RAY | gadgets Summary
Collection of gadgets for Profiles and other RNT
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QUESTION
I am studying ROP on Arm64, I posted my thread here Return Oriented Programming on ARM (64-bit)
However a new/separate issue about choosing rop gadgets has arisen which requires the opening of a new thread. So to sum up i am studying ROP vulnerability on ARM 64 bit and i am trying to test it using a very simple c code (attached to the previous thread). I'am using ropper tool in order to search for gadgets to build my rop chain. But when i overflow the pc with the address of the gadget i got this within gdb:
...ANSWER
Answered 2021-Jun-13 at 14:57Your gadget is at 0x55555558f8
.
Ropper shows the addresses of gadgets the way the ELF header describes the memory layout of the binary. According to that header:
- The file contents 0x0-0xadc are to be mapped as
r-x
at address 0x0. - The file contents 0xdb8-0x1048 are to be mapped as
rw-
at address 0x10db8.
Account for page boundaries and you get one page mapping file offset 0x0 to address 0x0 as executable and two pages mapping file offset 0x0 to address 0x10000 as writeable.
From your GDB dump, these mappings are created at 0x5555555000 and 0x5555565000 in the live process, respectively.
QUESTION
I was reading about the vulnerability of deserializing types with Json.Net using a setting different from TypeNameHandling.None
. The Json.Net docs recommend implementing a custom SerializationBinder
. A simple example of a custom binder that checks types against a list of known types is given here.
While this solution certainly works, the set of known types is not fixed in my scenario, since the application has to support extensions, which might define their own data classes. One solution would be to extend the known type list during the registration of an extension, however, I had a second approach in mind, that I'd like to verify:
I want to define a common interface for trusted types:
(suggested by dbc: A custom attribute could be used instead of a marker interface.)
...ANSWER
Answered 2021-Jun-11 at 15:15When you encounter a type that isn't marked, it is not sufficient to check its generic type arguments, you need to check the type of every public property and every parameter of a public constructor, because these are the serialization footprint.
For example, you really do not want to allow deserialization of a System.Data.TypedTableBase
even if T
is safe, because it has public properties that allow configuring database access.
QUESTION
In my Index.cshtml file I have this line of code:
...ANSWER
Answered 2021-May-19 at 16:25It is an Anonymous Type.
Check this documentation: Anonymous Types
Basically it is a way to create an object with readonly properties.
The compiler will generate an actual type but the name of the type is not known in the source code.
It is more of a convenient way to work with a group of properties in a limited scope.
As for how this gets passed to the Action in the Controller what happens is that the anonymous type gets "translated" to Query String Parameters by the Html.ActionLink function.
This means it will become the part of the url that comes after the "?" like this:
http://localhost/somecontroller/someaction?id=123
So if you had more "properties" they will become "propertyName=propertyValue" pairs in the Query String.
QUESTION
I have an array of objects like this below.
...ANSWER
Answered 2021-Apr-30 at 12:08QUESTION
I want to break the below nested array in simple associative array.
Input
...ANSWER
Answered 2021-Apr-29 at 19:51A recursive function is one option...
QUESTION
I want to redraw canvas multiple times on different positions within few seconds from bottom until user's selected button/link.
From example image, if user click 5th floor items then the lift should move slowly until 5th floor from ground floor. Thanks for any kind of approach. From the code that attached, if click any floor items, the lift moving directly until that level because I put fixed size. what I need is to move the lift slowly until selected floor. Hope I can make everyone understand the scenario.
...ANSWER
Answered 2021-Apr-20 at 13:47First we should really try to clean your code a little bit as there's a lot of repetition which makes maintaining a bit hard.
You have eleven buttons which essentially all do the same thing once clicked:
- update a single variable
- redraw canvas
At the moment you manually attach all the above actions to each one of the buttons.
e.g.
QUESTION
I'm trying to add items in a cart using vuex but getting some error in the console and the product in the page is not showing as well. Please tell me how to solve this issue. here is the error in console
...ANSWER
Answered 2021-Apr-17 at 09:37The server can't see into browser local storage because local storage is a feature of the client. What I think is happening is that localStorage.getItem('cart') is returning undefined and the error your seeing is from trying to JSON.parse undefined when it is expecting to find valid JSON.
Your store is firing the applicable function server-side because of the mounted hook in your template during the server render.
You will need to wait to call localStorage.getItem on the client side and then pass it back to the server (using server-miidleware for processing if requiring additional node access after load) or just process it client-side and commit the results to store.
I also find that using vuex-persistedstate is a good augmentation to this logic or alternative, you can selectively persist your cart after the first commitment and then your server can access it on later instantiations of your app.
QUESTION
I am currently learning about binary exploitation. Now i am working with a binary (Linux) that is vulnerable to a stack buffer overflow (ASLR and NX are enabled, and binary is interacted with through network), and i have developed a 2 stage exploit, the first stage leaks the address of the puts
function in libc (from the GOT and leak by calling puts
to send address), and the 2nd stage uses the leaked address to calculate the address of a few ROP gadgets and the execve
function, which is used to gain Remote Code Execution.
The problem is:
I debug the binary in IDA and find the address of puts
and execve
so then i can calculate the offset of execve
from puts
. Lets say this offset is x
. Then when using the exploit, stage 1 leaks address of puts
and then address of execve
is found by puts + x
. This exploit works fine on my installation of Linux, but i have noticed that in other flavours of linux, the offset x
of puts -> execve in libc is different (Assuming because its a different build of libc). So my question is, how can one find the address of another function using a leaked libc address, for a different Linux flavour which has an unknown offset.
ANSWER
Answered 2021-Apr-11 at 16:37This exploit works fine on my installation of Linux, but i have noticed that in other flavours of linux, the offset x of puts -> execve in libc is different (Assuming because its a different build of libc).
Correct: the address will change depending on exact GLIBC source, exact version of compiler and linker used, compilation flags, etc.
In short, you can know this offset for a specific version of libc6
package in a specific Linux distribution, but there are probably a 100 different variants in common use on any given day.
So my question is, how can one find the address of another function using a leaked libc address, for a different Linux flavour which has an unknown offset.
You can't.
The only things you could do are
- download common versions of GLIBC for common distributions, compute the offset on each one, and try them all one by one, or
- guess that the offset isn't very different between the systems (you can confirm whether this is in fact true by doing above step), and just try all values between
[x - N, x + N]
(whereN
is the guest maximum of the possible deviations).
QUESTION
I have an Array that takes some strings of Category, and I want to update the Array field based on the selectedCategory using formik. Below is what I have done.
categories.ts
...ANSWER
Answered 2021-Mar-11 at 15:56you need to let formik handle the events
QUESTION
I need to write a code that would remove specific words from a text. After some research I found out that it's best to replace all the words with " ", but replace() is not a good option as it removes characters from other words too. I found this re.sub() function and want to define a piece of code that would replace words from the given text (words are defined in a separate list). In most tutorials creating a dictionary for replacements was needed. I don't have one, so I wanted to define something that would check the list of stopwords and whenever found one in the text replace it with " ".
That is my code:
...ANSWER
Answered 2021-Feb-27 at 16:30You seem to be looking for
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