@programminginc - страница 1830

Anonymous

i think these are secondary things. Remove it.

Anonymous

I'm already wondering where the A comes from

which A?

Wim

output: 60 268435456

^ That A

Anonymous

I'm currently focusing on logic mates !!

Anonymous

^ That A

ohh sorry corrected it.

Anonymous

hello

Anonymous

im new here i hope to learn a lot from all of you

X3eRo0

Pls suggest some good IDEs for C in Linux/windows..

Vim

X3eRo0

Try sublime text maybe

X3eRo0

Atom is good These are text editors + some extra functionality

X3eRo0

Or as others said visual shit is good

C.

Pls suggest some good IDEs for C in Linux/windows..

Atom is not an IDE, but you can compile on Linux terminal. Code::Blocks and Visual Studio for Windows if you really want an IDE

Anonymous

Please provide syntax of call by value method

X3eRo0

Atom is not an IDE, but you can compile on Linux terminal. Code::Blocks and Visual Studio for Windows if you really want an IDE

On Linux I prefer sublime and the luxury of terminal

X3eRo0

Please provide syntax of call by value method

function(a,b);

C.

On Linux I prefer sublime and the luxury of terminal

I am trying to learn Vim, actually, and I hate those messages from Sublime, but it's good

X3eRo0

Where a and b may be values or variables

Anonymous

function(a,b);

Syntax not functioncall

Artöm

Please provide syntax of call by value method

What do you mean?

X3eRo0

Is there any reverse engineer here?

C.

Is there any reverse engineer here?

I'll start looking at it after I get better at C

X3eRo0

You also need good understanding of assembly

X3eRo0

Recently I participated in this Nul1CTF

X3eRo0

There were these crackmes written in go

X3eRo0

Go language

X3eRo0

Literally a hello world program will contain 2000 functions when you open it in any disassembler

C.

You also need good understanding of assembly

oh God

C.

Literally a hello world program will contain 2000 functions when you open it in any disassembler

WTF

X3eRo0

I had to reverse engineer that crackme it was obvious that you need experience here, recognize which function is standard function and which one is not

X3eRo0

It was obvious that I couldn't solve that crackme

X3eRo0

C.

lol

X3eRo0

C.

hey, how can I print on the screen without using printf/cout functions? I know it is unpractical, but how bad is it?

Wim

Literally a hello world program will contain 2000 functions when you open it in any disassembler

If that turns up over 2000 opcodes, its compiled from some high-level language; in pure ASM you'd only need a few

X3eRo0

Use write syscall

Anonymous

What do you mean?

For eg: Int(a,b) { int s; s=a+b; return s; }

X3eRo0

Something like write(char *, size, stdout);

Anonymous

#include<iostream> using namespace std; int main(){ long long n = 10000000000; for(long long i=61;i>=0;--i){ if((1 << i) & n){ cout<<i<<" "<<(1 << i); return 0; } } return 0; }

Did anyone find what's wrong in there?😔

X3eRo0

I don't remember the exact order of arguments passed to write syscall

Artöm

For eg: Int(a,b) { int s; s=a+b; return s; }

You need types fir args

C.

I don't remember the exact order of arguments passed to write syscall

but isn't syscall assembly?

X3eRo0

If that turns up over 2000 opcodes, its compiled from some high-level language; in pure ASM you'd only need a few

Not 2000 opcodes but the total number of functions including _start() and standard golang functions

C.

Didn't know that you can access it in c

X3eRo0

but isn't syscall assembly?

The write() function does the syscall for you

X3eRo0

Basically you can use write to print something to different file descriptors like stderr stdout and maybe stdin too

C.

oh

X3eRo0

I also made a working packer as a PoC which decrypts the binary during runtime

X3eRo0

Basically I encrypted a segment in the ELF with xor (I know weak crypto but it's sufficient for a PoC) and the binary decrypts the function and executes it and then encrypts it back

C.

nice

X3eRo0

https://pagedout.institute I wrote an article on binary packing in this magazine by Gynvael Coldwind page 46 pls check it out

X3eRo0

Programming magazine

X3eRo0

Free for community by community

C.

Issue #1?

C.

oh, found it lmao