Questions tagged [syscall]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
2
votes
2answers
385 views

mprotect syscall not working

I want to modify the protection of the .text segment to RWX using a shellcode. In the shellcode, I can issue the syscall for mprotect however it's not working. Per the sys_mprotect definition, it ...
0
votes
1answer
51 views

Find all syscall in statically Arm Binary

What is the easy and fast way to find all syscall in statically Arm binary ? Is there any Ida plugin that do that?
0
votes
0answers
37 views

Address of calling syscall

With strace I can see all syscall that process call. Is there any way to know witch address of process call to this syscall?
0
votes
0answers
66 views

Why does this execve shellcode work with this argv?

I wrote the following program in fasm, and am using Evan's Debugger on Ubuntu to debug it: format ELF64 executable 3 segment readable executable entry $ mov rbp, rsp sub rsp, 32 mov rax, 'this a t' ...
-1
votes
1answer
73 views

How to find each interrupt's line in the Interrupt Descriptor Table

I'm trying to find the line number of the 0f05 syscall interrupt with no success. I searched everywhere and couldn't find any way of doing that, it seems like this information is hard coded in the ...
0
votes
1answer
151 views

Understand what Ioctl do

I looking in ida on arm linux binary . I can see there that there is ioctl call ioctl(fd,req,num). fd is fd to /dev/module. ,req is some 4bytes and num is some number. How can I understand what ...