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Smallest executable for Windows


Smallest executable for Windows

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Smallest executable for Windows
Tag : java , By : kgw
Date : January 10 2021, 01:49 PM


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Easiest language to produce a Windows executable to prefix running another executable with system calls?


Tag : development , By : Joe Sweeney
Date : March 29 2020, 07:55 AM
To fix this issue Visual C# 2008 Express Edition is
free comes with a compiler outputs exes C# is a good choice if you have C experience .net currently is the "canonical" Windows platform

Spring Boot generates the smallest executable jar package


Tag : spring , By : user126922
Date : March 29 2020, 07:55 AM
this will help You are using spring-boot-maven-plugin to create fat jar. You can avoid using it however your jar won't be executable, meaning you won't be able to do:
java -jar myapp.jar
unzip -q myapp.jar -d myapp
java -cp myapp org.springframework.boot.loader.JarLauncher

What is the smallest possible Windows (PE) executable?


Tag : windows , By : Novi Indrayani
Date : March 29 2020, 07:55 AM

We would like to find the smallest, 3rd-smallest, 5th-smallest and 7th-smallest of n elements in an array


Tag : algorithm , By : Guyou
Date : March 29 2020, 07:55 AM
wish helps you Let's iterate through the input array A and on every iteration maintain sorted array smallest containing 7 smallest elements so far:
smallest = [INF, INF, INF, INF, INF, INF, INF]
for each Number in A
    find the insert position of the Number (if any) in the smallest array with binary 
        search (3 comparisons)
    insert to the smallest if needed (0 comparisons)

Smallest executable program (x86-64)


Tag : assembly , By : KL.
Date : March 29 2020, 07:55 AM
With these it helps Starting from an answer of mine about the "real" entrypoint of an ELF executable on Linux and "raw" syscalls, we can strip it down to
bits 64
global _start
_start:
   mov di,42        ; only the low byte of the exit code is kept,
                    ; so we can use di instead of the full edi/rdi
   xor eax,eax
   mov al,60        ; shorter than mov eax,60
   syscall          ; perform the syscall
66 bf 2a 00 31 c0 b0 3c 0f 05
bits 64
            org 0x08048000

ehdr:                                           ; Elf64_Ehdr
            db  0x7F, "ELF", 2, 1, 1, 0         ;   e_ident
    times 8 db  0
            dw  2                               ;   e_type
            dw  62                              ;   e_machine
            dd  1                               ;   e_version
            dq  _start                          ;   e_entry
            dq  phdr - $$                       ;   e_phoff
            dq  0                               ;   e_shoff
            dd  0                               ;   e_flags
            dw  ehdrsize                        ;   e_ehsize
            dw  phdrsize                        ;   e_phentsize
            dw  1                               ;   e_phnum
            dw  0                               ;   e_shentsize
            dw  0                               ;   e_shnum
            dw  0                               ;   e_shstrndx

ehdrsize    equ $ - ehdr

phdr:                                           ; Elf64_Phdr
            dd  1                               ;   p_type
            dd  5                               ;   p_flags
            dq  0                               ;   p_offset
            dq  $$                              ;   p_vaddr
            dq  $$                              ;   p_paddr
            dq  filesize                        ;   p_filesz
            dq  filesize                        ;   p_memsz
            dq  0x1000                          ;   p_align

phdrsize    equ     $ - phdr

_start:
   mov di,42        ; only the low byte of the exit code is kept,
                    ; so we can use di instead of the full edi/rdi
   xor eax,eax
   mov al,60        ; shorter than mov eax,60
   syscall          ; perform the syscall

filesize      equ     $ - $$
bits 64
            org 0x08048000

ehdr:                                           ; Elf64_Ehdr
            db  0x7F, "ELF", 2, 1,              ;   e_ident
_start:
            mov di,42        ; only the low byte of the exit code is kept,
                            ; so we can use di instead of the full edi/rdi
            xor eax,eax
            mov al,60        ; shorter than mov eax,60
            syscall          ; perform the syscall
            dw  2                               ;   e_type
            dw  62                              ;   e_machine
            dd  1                               ;   e_version
            dq  _start                          ;   e_entry
            dq  phdr - $$                       ;   e_phoff
            dq  0                               ;   e_shoff
            dd  0                               ;   e_flags
            dw  ehdrsize                        ;   e_ehsize
            dw  phdrsize                        ;   e_phentsize
phdr:                                           ; Elf64_Phdr
            dw  1                               ;   e_phnum         p_type
            dw  0                               ;   e_shentsize
            dw  5                               ;   e_shnum         p_flags
            dw  0                               ;   e_shstrndx
ehdrsize    equ $ - ehdr
            dq  0                               ;   p_offset
            dq  $$                              ;   p_vaddr
            dq  $$                              ;   p_paddr
            dq  filesize                        ;   p_filesz
            dq  filesize                        ;   p_memsz
            dq  0x1000                          ;   p_align

phdrsize    equ     $ - phdr
filesize    equ     $ - $$
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