X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=hdw-sniff.c;h=0c73bc90f0397d2fa790c5ae48b2cafb17cf6065;hb=551ef6ebd6cfbf7caf60dd132953fad4b687f107;hp=18148572ec9f867e6f51a896761807fe7adcf9a0;hpb=9ad5fae0187dba865b7f823e4a6453ee5fa1740c;p=my-code%2Fhdw-sniff.git diff --git a/hdw-sniff.c b/hdw-sniff.c index 1814857..0c73bc9 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 */ @@ -48,7 +52,7 @@ 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]); } else { @@ -82,9 +86,12 @@ 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 */ @@ -120,9 +127,11 @@ 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],crypted_snap[12],tmp_buf1[10],tmp_buf2[32]; 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; @@ -149,7 +158,7 @@ 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 +166,12 @@ 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); @@ -167,56 +182,109 @@ 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"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_ATIM)>0) - strcpy(tmp_buf,"announcement traffic indication message"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_DISASSOC)>0) - strcpy(tmp_buf,"disassociation"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_AUTH)>0) - strcpy(tmp_buf,"authentification"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_DEAUTH)>0) - strcpy(tmp_buf,"deauthentification"); + /* management */ + if(!(w_hdr->frame_ctl & 0x0c)) { if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_REQ)>0) strcpy(tmp_buf,"association request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_ASSOC_RESP)>0) strcpy(tmp_buf,"association response"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_REQ)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_REQ)>0) strcpy(tmp_buf,"reassociation request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_REASSOC_RESP)>0) strcpy(tmp_buf,"reassociation response"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_REQ)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_REQ)>0) strcpy(tmp_buf,"probe request"); - if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_PROBE_RESP)>0) strcpy(tmp_buf,"probe response"); - else strcpy(tmp_buf,"unknown"); + 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 & data frame type not supported yet"); /* print out frame type */ printf("=> %s\n",tmp_buf); - + 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":":")); + ((w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)==IEEE802_11_FTYPE_DATA)) { + + if(!(w_hdr->frame_ctl & IEEE802_11_FTYPE_DATA)) { + 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":":")); + } + 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); + } + } + else { + printf("- crypted packet!\n"); + /* print crypted snap - write into file */ + printf("snap: (iv(3) + index(1) + crypted snap(6)) "); + for(i=0;i<10;i++) { + printf("%x ",*(snap_hdr->snap+i)); + crypted_snap[i]=*(snap_hdr->snap+i); + } + /* + 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"); + write(file_fd,crypted_snap,11); + } + } + } - /* IP ? */ - if(ntohs(e_hdr->h_proto)==ETH_P_IP) { + /* IP ? */ + if((ntohs(e_hdr->h_proto)==ETH_P_IP) | (ntohs(snap_hdr->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)); @@ -224,16 +292,16 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, 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) { + for(i=0;i<=3;++i) { printf("%d%s", - ip_hdr->saddr&0xff<saddr&(0xff<<(8*i)))>>(8*i), + (i==3?"\n":".")); } printf("destination_ip: "); - for(i=3;i>=0;--i) { + for(i=0;i<=3;++i) { printf("%d%s", - ip_hdr->daddr&0xff<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)); @@ -248,10 +316,12 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, for(i=p_o+w_o;icaplen;i++) printf("%x ",*(package+i)); printf("\n"); +#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 +329,10 @@ 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) {