Can't attach to gdb on ArchWSL(WSL2).

[Xunflash]

I can't attach to gdb, details on the outputs below:

from pwn import *
context.log_level='debug'
# context.terminal=['cmd.exe', '/c', 'start', 'wsl.exe', '--', 'sudo', 'su', '-c'] #use this line can attach to su gdb
sh = process("./challenge")
gdb.attach(sh)

and I get the following output

I searched the error (ptrace: Operation not permitted.) on google and I found the following wiki:
https://github.com/Microsoft/MIEngine/wiki/Troubleshoot-attaching-to-processes-using-GDB

so I exeuted the second option's command because my wsl don't support yama (it shows "no such file or directory.")

sudo setcap cap_sys_ptrace=eip /usr/bin/gdb

But still not working.

[peace-maker]

I can't attach to gdb, details on the outputs below:

from pwn import *
context.log_level='debug'
# context.terminal=['cmd.exe', '/c', 'start', 'wsl.exe', '--', 'sudo', 'su', '-c'] #use this line can attach to su gdb
sh = process("./challenge")
gdb.attach(sh)

If this is your whole script, the problem is that your exploit script terminates and takes the target process with it before gdb has a chance to attach. Usually adding a p.interactive() call at the end helps. Try adding a pause() call after your gdb.attach or use gdb.debug instead to avoid race conditions.

A different issue appears to be the wait_for_debugger helper failing for you.

[-] Waiting for debugger: debugger exited!

That should block execution in your exploit script until the debugger is actually attached. If you manage to fix it, please open a pull request!

pwntools/pwnlib/util/proc.py

Line 391 in d7817a7

def wait_for_debugger(pid, debugger_pid=None):

[Xunflash]

If this is your whole script

Actually it's not the whole script. I omitted some code.

A different issue appears to be the wait_for_debugger helper failing for you.

[-] Waiting for debugger: debugger exited!

That should block execution in your exploit script

I think here is the key point.(This may be caused by the ptrace error) Actually I need to add a "-- sudo" to the context.terminal so that I can temporarily attach to the gdb. But this means I need to prefix each script with context.terminal.
I think it maybe a issue that associated with WSL.

[RocketMaDev]

@Xunflash Dude, I does not recommend using Arch Linux in WSL2 as neither Microsoft nor Arch has official support for Arch/WSL2. I have a friend who used Arch/WSL2 first, and praised how convenient yay is. But some infrustructure like systemd couldn't behave like real Arch Linux. So he ended up using back Ubuntu/WSL2.

In my opinion, Ubuntu is suitable for WSL2 and Arch Linux is suitable for physical system. If you would like to try Arch Linux, I only suggest Dual boot with Windows, and separate them in different disks to avoid efi corrupt if you have two.