X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=hdw-sniff.c;h=8b35e82fb451388ff124767104b9957cacd9f141;hb=326723124c4b55eccaa297c1636f9d345255d7bd;hp=6ba9c829bb1b0ce8d539456ae608ffad61328a0a;hpb=14af14446a79ff647bc7270d5382fd1d4d98f2cf;p=my-code%2Fhdw-sniff.git diff --git a/hdw-sniff.c b/hdw-sniff.c index 6ba9c82..8b35e82 100644 --- a/hdw-sniff.c +++ b/hdw-sniff.c @@ -13,6 +13,8 @@ #include #include #include +#include +#include #include #include @@ -27,6 +29,9 @@ #include "hdw-sniff.h" /* my functions */ +/* global variables */ +int file_fd=0; + int main(int argc, char *argv[]) { char pcap_error[PCAP_ERRBUF_SIZE]; @@ -35,7 +40,6 @@ int main(int argc, char *argv[]) { fd_set pcap_fd_set; struct timeval fd_set_tv; char sys_call[30]; - FILE *logfile; struct info_struct my_info_struct; /* parse the arguments */ @@ -48,11 +52,12 @@ int main(int argc, char *argv[]) { printf("no logfile specified, writing to stdout ...\n"); } else { - if((logfile=fopen(argv[3],"w"))!=NULL) { + if((file_fd=open(argv[3],O_RDWR | O_CREAT))!=0) { printf("writing to logfile %s ...\n",argv[3]); + dprintf(file_fd,"|iv - --|id|crypted_snap - --|\n"); } else { - printf("can't open logfile!\n"); + printf("can't open logfile. not logged to file!\n"); } } @@ -82,9 +87,12 @@ int main(int argc, char *argv[]) { return 1; } - /* grab a package until user breaks */ + /* set info struct */ my_info_struct.count=0; my_info_struct.mmode=argv[2][0]; + my_info_struct.ssid_list=(struct list *)malloc(sizeof(struct list)); + my_info_struct.ssid_list->next=NULL; + // strcpy(my_info_struct.ssid_list->ssid,"test"); strcpy(my_info_struct.dev,argv[1]); /* prepare for select */ @@ -120,11 +128,13 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, const u_char *package) { /* local variables */ - char tmp_buf[20]; + char tmp_buf[20],tmp_buf1[10],tmp_buf2[32]; + unsigned char crypted_snap[12]; struct linux_wlan_ng_prism_hdr *prism_hdr; struct ieee802_11_hdr *w_hdr; + struct snaphdr *snap_hdr; + struct beacon_struct *beacon_hdr; struct ethhdr *e_hdr; - struct iphdr *ip_hdr; struct info_struct *my_info_struct; int i,p_o,w_o,e_o,i_o; @@ -149,7 +159,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, /* wireless stuff */ /* prism wlan ng headers */ - if((my_info_struct->mmode-0x30==1) && + if((my_info_struct->mmode-0x30==1) & (strncmp(my_info_struct->dev,"wlan",4)==0)) { printf("prism header: (%d bytes)\n",p_o); prism_hdr=(struct linux_wlan_ng_prism_hdr *)package; @@ -157,6 +167,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, prism_hdr->msglen); printf("device: %s |\n",prism_hdr->devname); /* ieee802.11 header */ + + /* we need smaller w_hdr for non distributed frames */ + if((w_hdr->frame_ctl & (1<<8)) & (w_hdr->frame_ctl & (1<<9))) { + printf("=> distributed packet !!!!11\n"); + } else w_o-=(sizeof(struct snaphdr)-sizeof(unsigned short)); + printf("ieee802.11 header: (%d bytes)\n",w_o); w_hdr=(struct ieee802_11_hdr *)(package+p_o); @@ -167,17 +183,10 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, (i==15?"|\n":"|")); printf(" | v | t | s-t |t|f|m|r|p|m|w|o|\n"); /* frame type */ - if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)>0) - strcpy(tmp_buf,"beacon"); - else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) - strcpy(tmp_buf,"announcement traffic indication message"); - else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DISASSOC)>0) - strcpy(tmp_buf,"disassociation"); - else if((w_hdr->frame_ctl & IEEE802_11_STYPE_AUTH)>0) - strcpy(tmp_buf,"authentification"); - else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DEAUTH)>0) - strcpy(tmp_buf,"deauthentification"); - else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_REQ)>0) + /* management */ + if(!(w_hdr->frame_ctl & 0x0c)) { + tmp_buf1[0]='\0'; tmp_buf2[0]='\0'; + if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_REQ)>0) strcpy(tmp_buf,"association request"); else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_RESP)>0) strcpy(tmp_buf,"association response"); @@ -189,69 +198,114 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, strcpy(tmp_buf,"probe request"); else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) strcpy(tmp_buf,"probe response"); - else strcpy(tmp_buf,"unknown yet!"); - /* print out frame type */ + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)==IEEE802_11_STYPE_BEACON) { + beacon_hdr=(struct beacon_struct *)(package+p_o+w_o); + beacon_hdr->ssid_s.elementid==0?strcpy(tmp_buf1,"essid = ") + :strcpy(tmp_buf1,"ibssid = "); + strncpy(tmp_buf2,beacon_hdr->ssid_s.ssid, + beacon_hdr->ssid_s.length); + tmp_buf2[beacon_hdr->ssid_s.length]='\0'; + strcpy(tmp_buf,"beacon"); + add_ssid_2_list(tmp_buf2,my_info_struct->ssid_list); + } + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) + strcpy(tmp_buf,"announcement traffic indication message"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DISASSOC)>0) + strcpy(tmp_buf,"disassociation"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_AUTH)>0) + strcpy(tmp_buf,"authentification"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_DEAUTH)>0) + strcpy(tmp_buf,"deauthentification"); + else strcpy(tmp_buf,"impossible situation \%) - go mail the author."); + } + else strcpy(tmp_buf,"control or data frame type"); + printf("=> %s\n",tmp_buf); - + if(strlen(tmp_buf1)>0 & strlen(tmp_buf2)>0) printf(" %s%s\n", + tmp_buf1, + tmp_buf2); printf("duration/id: 0x%x\n",w_hdr->duration_id); printf("version check ... %s\n", ((w_hdr->frame_ctl & IEEE802_11_FCTL_VERS)==0x00)? "ok":"unknown"); } - /* ieee802.3 */ /* ethernet */ if((strncmp(my_info_struct->dev,"eth",3)==0) | - ((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)>0)) { - printf("ethernet: (%d bytes)\n",e_o); - e_hdr=(struct ethhdr *)(package+p_o+w_o); - /* what types ? */ - printf("type = "); - printf("%x ",ntohs(e_hdr->h_proto)); - printf("dest_addr = "); - for(i=0;ih_dest+i),((i==ETH_ALEN-1)?" ":":")); - printf(" src_addr = "); - for(i=0;ih_source+i),((i==ETH_ALEN-1)?"\n":":")); - - /* IP ? */ - if(ntohs(e_hdr->h_proto)==ETH_P_IP) { - printf("ip protocol: (%d bytes)\n",i_o); - ip_hdr=(struct iphdr *)(package+p_o+w_o+e_o); - printf("version = %x ",ntohs(ip_hdr->version)); - printf("header_length = %x \n",ntohs(ip_hdr->ihl)); - printf("service = %x ",ntohs(ip_hdr->tos)); - printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len)); - printf("source_ip: "); - for(i=3;i>=0;--i) { - printf("%d%s", - ip_hdr->saddr&0xff<frame_ctl & IEEE802_11_FTYPE_DATA)==IEEE802_11_FTYPE_DATA)) { + + if((strncmp(my_info_struct->dev,"eth",3)==0)) { + printf("ethernet: (%d bytes)\n",e_o); + e_hdr=(struct ethhdr *)(package+p_o+w_o); + /* what types ? */ + printf("type = "); + printf("%x ",ntohs(e_hdr->h_proto)); + printf("dest_addr = "); + for(i=0;ih_dest+i),((i==ETH_ALEN-1)?" ":":")); + printf(" src_addr = "); + for(i=0;ih_source+i), + ((i==ETH_ALEN-1)?"\n":":")); + if((ntohs(e_hdr->h_proto)==ETH_P_IP)) + parse_ip(package+p_o+w_o+e_o); + } + else { + snap_hdr=(struct snaphdr *)(package+p_o+w_o); + if((snap_hdr->snap[0]==0xaa) & + (snap_hdr->snap[1]==0xaa) & + (snap_hdr->snap[2]==0x03) & + (snap_hdr->snap[3]==0x00) & + (snap_hdr->snap[4]==0x00) & + (snap_hdr->snap[5]==0x00)) { + printf("- no encryption!\n"); + if(snap_hdr->proto==ntohs(ETH_P_IP)) { + e_o=sizeof(struct snaphdr); + parse_ip(snap_hdr+e_o); + } + } - printf("destination_ip: "); - for(i=3;i>=0;--i) { - printf("%d%s", - ip_hdr->daddr&0xff<snap+i)); + crypted_snap[i]=*(snap_hdr->snap+i); + } + /* xor with plain + crypted_snap[4]^=0xaa; + crypted_snap[5]^=0xaa; + crypted_snap[6]^=0x03; + crypted_snap[7]^=0x00; + crypted_snap[8]^=0x00; + crypted_snap[9]^=0x00; + */ + + printf("\n"); + crypted_snap[10]='\0'; + crypted_snap[11]='\n'; + + if(file_fd>0) { + printf("debug: saved to file\n"); + dprintf(file_fd,IVLINE,IVL_ARGS); + } } - printf("ip_id = %x ",ntohs(ip_hdr->id)); - printf("ip_offset = %x \n",ntohs(ip_hdr->frag_off)); - printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ttl), - ntohs(ip_hdr->protocol)); - // printf("chksum: %x\n",ntohs(ip_hdr->ip_sum)); } } - /* check what we have ... */ + /* dump it */ +#ifdef SHOW_HEX printf("all dump: (hex)\n"); for(i=p_o+w_o;icaplen;i++) printf("%x ",*(package+i)); printf("\n"); +#endif +#ifdef DEBUG_CHAR printf("all dump: (char)\n"); for(i=p_o+w_o;icaplen;i++) printf("%c ",*(package+i)); printf("\n"); +#endif } int hop_channel(struct info_struct *info,int foo_fd) { @@ -259,11 +313,10 @@ int hop_channel(struct info_struct *info,int foo_fd) { struct iwreq my_iwreq; - if (info->channel>=14) info->channel=1; + if (info->channel>=C_MAX) info->channel=1; memset(&my_iwreq,0,sizeof(my_iwreq)); strcpy(my_iwreq.ifr_name,info->dev); - printf("debug: channel = %d\n",info->channel); my_iwreq.u.freq.e=0; my_iwreq.u.freq.m=info->channel; if((ioctl(foo_fd,SIOCSIWFREQ,&my_iwreq))==-1) { @@ -275,3 +328,32 @@ int hop_channel(struct info_struct *info,int foo_fd) { } return 0; } + +int parse_ip(char *ip_o) { + struct iphdr *ip_hdr; + int i; + + printf("ip protocol:\n"); + ip_hdr=(struct iphdr *)ip_o; + printf("version = %x ",ntohs(ip_hdr->version)); + printf("header_length = %x \n",ntohs(ip_hdr->ihl)); + printf("service = %x ",ntohs(ip_hdr->tos)); + printf("total_length(dec.) = %d \n",ntohs(ip_hdr->tot_len)); + printf("source_ip: "); + for(i=0;i<=3;++i) { + printf("%d%s", + (ip_hdr->saddr&(0xff<<(8*i)))>>(8*i), + (i==3?"\n":".")); + } + printf("destination_ip: "); + for(i=0;i<=3;++i) { + printf("%d%s", + (ip_hdr->daddr&(0xff<<(8*i)))>>(8*i), + (i==3?"\n":".")); + } + printf("ip_id = %x ",ntohs(ip_hdr->id)); + printf("ip_offset = %x \n",ntohs(ip_hdr->frag_off)); + printf("time2live = %x ip_proto = %x\n",ntohs(ip_hdr->ttl), + ntohs(ip_hdr->protocol)); + // printf("chksum: %x\n",ntohs(ip_hdr->ip_sum)); +}