nuls | global blockchain open-source project | Cryptocurrency library

Adding the following in client-ssl.properties resolved the issue:

Best way to solve this is to set the height of the image container div.

The data variable is a list with dictionaries and the dictionaries have the values you want.So, you just need to dig in a bit deeper for the data you want.

• Firstly, access each dictionary in the list using a for loop
• Check if the "market" value for the current dictionary is among ["BTC-EUR","ETH_EUR"] or not
• If it is, print the price for those values

Try:

I think you might be looking for that.

It looks like file_example.rda is corrupt

Can you just load it in R and check what it contains?

You could try:

First bytes of the compiled Lua file tell the version where the script was compiled in.

Try LuaDec. (5.1 - 5.3) https://github.com/viruscamp/luadec

Alternative project: Chunkspy. (It's only for 5.1 and 5.0.2.) http://chunkspy.luaforge.net/

For 5.1 and 5.0: https://sourceforge.net/projects/unluac

Your strace output makes the problem clear: connect returns an error code (between -4095 to -1), so the high bytes of EAX are 0xffffff... Later mov al, imm8¹ leaves them unmodified, resulting in EAX= invalid system call number².

If you want to make it exit cleanly even if an earlier system call returned negative, xor eax,eax / inc eax / int 0x80 at the end to do a SYS_exit. (With BL=1 or some non-zero value to exit with a non-zero status).

Or use push 0xb / pop eax to set EAX=SYS_execve for that final system call, so the shell definitely runs. (But with stdin not redirected, so that's not very good).

Or just get used to using strace as error checking, now that you understand what happens when a system call return value leaves the high bytes of EAX non-zero. You could put a ud2 at the end so it will exit with an illegal instruction instead of segfault (when execution falls into 00 00 add [eax], al bytes.)

Or if you really want, write actual error checking for the connect system call, checking for a negative EAX and using write to output an error message before exiting. That would obviously be useless in real shellcode which would run with its stdout connected to something on the victim computer, not yours. connect is the one most likely to fail, so you can still leave the other syscalls unchecked other than by strace.

Footnote 1: Remember you're using mov al, 0xb instead of mov eax, 0xb to avoid zeros in your machine code, although push 0x0100007F doesn't do that. >.< Not a problem when building as an executable, but would be a problem for injection via a strcpy or other C-string buffer overflow vulnerability.

Footnote 2: Apparently strace or the kernel is sign-extending that to 64 bits, despite the fact that the full RAX isn't accessible in 32-bit mode.

This may be a bug. The file is being read by arrow fine. The error comes when converting it into a data frame.

The reason is that doubling the backslash, \\, means that the backspace is escaped. Instead of looking at NUL (0x00), you are looking literally \0 - two characters.

The correct syntax would be like so,