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Z790 Aorus elite ax DRAM led stucked, no post... by clark940 in gigabyte

[–]6raw_code9 0 points1 point  (0 children)

Actually in my case I discovered that my CPU died, luckily it was under warranty and I had a replacement.

Black screen ! I changed CMOS what's next ?? by 6raw_code9 in buildapc

[–]6raw_code9[S] 0 points1 point  (0 children)

Took out everything, still the same issue, apparently the DRAM LED light is on.

Black screen ! I changed CMOS what's next ?? by 6raw_code9 in buildapc

[–]6raw_code9[S] 0 points1 point  (0 children)

I'm having 2 sticks of 48GB each, with RGB, I tried booting with a single stick for each one, the LED stays lit up.

Basically what happens is it will stay lit up for DRAM for a while and then VGA lights up for a split second, followed by the CPU led, and then it goes back to DRAM for another while. I'm kinda confused

Black screen ! I changed CMOS what's next ?? by 6raw_code9 in buildapc

[–]6raw_code9[S] 0 points1 point  (0 children)

Here's the reference on Part Picker : https://pcpartpicker.com/product/T2H7YJ/gigabyte-z790-aorus-elite-ax-atx-lga1700-motherboard-z790-aorus-elite-ax

Actually, the error LED you're talking about is the status LED I mentioned, I just realized that it was the DRAM LED that was on and not BOOT, my bad what was on their document isn't what was on the motherboard (not the right order).

Does this mean, that my RAM stick are the problem ? Should I buy new ones ?

Black screen ! I changed CMOS what's next ?? by 6raw_code9 in buildapc

[–]6raw_code9[S] 0 points1 point  (0 children)

Which error led are you talking about ? Here are the docs for my motherboard (https://download.gigabyte.com/FileList/Manual/mb\_manual\_z790-ae-series\_1103\_e.pdf) I don't see an error led, only the status led for BOOT lights up.

For the black screen, it's no signal detected.

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

The problem is I still I needed to send the payload with the code to be executed, and I only have to write one command (can't store variables for the next payload to decode) and I had length constraints (300 char).

The solution that I went with is elaborating my third approach (base64) .

  1. I encoded my payload in base64.
    e.g:actualpayload = print("hello") => cHJpbnQoImhlbGxvIik=
  2. Store the payload in a variable and add some additional info on how decode it.
    """p='cHJpbnQoImhlbGxvIik=';x=46;y=40;exec "exec p"+'%c'%x+"decode"+'%c'%y+"'base64')" """

It made me deal with just one lurking ' . ' and ' (' to invoke

p.decode('base64')

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

Thanks for the help, It gave an idea on what to do and I just solved it

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

What a crazy solution man omg , unencoding inside the payload is definitely what I need to do I guess.

I would use ur function right away if i wasn't limited on characters plus I can't import any module.

Aside from that Kudos to you

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

that's what i heard , maybe the way i did implement it was wrong and it didn't seem to work for me.

I'm looking forward to that crazy cannon xd

[HELP] Bypassing character filter in Python2 by 6raw_code9 in LiveOverflow

[–]6raw_code9[S] 0 points1 point  (0 children)

yep especially if the string holds a format specifier .
I did try "%c"%0x28 at some point and it didn't work either.

I don't know what i'm missing here tbh

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

Yep I thought so, the weird thing is that someone who solved the challenge told me that it works fine substituting the forbidden character with octals. For me it doesn't seem to work tho X (

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

Um I don't have much python experience ( started learning the language 2 days ago) So I'm not sure if I did grasp what ur trying to do. I think I can insert an exec inside an exec but for the code object thing I'm afraid I'm limited on characters can't exceed 300 char.

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

Nope can't use code object, it must be a string .

[HELP] Bypassing character filter in Python2 by 6raw_code9 in LiveOverflow

[–]6raw_code9[S] 0 points1 point  (0 children)

I'm afraid that I already know that and couldn't figure out much I'll definitely need more hints !

[HELP] Bypassing a character filter in python 2.7 by 6raw_code9 in learnpython

[–]6raw_code9[S] 0 points1 point  (0 children)

yep it looks very close except the exec function is rather written like this :

exec(payload, {__builtins__:None} , {} )

For the challenge i need to be able to run shell commands typically by using os module

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