X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=hdw-sniff.c;h=08f6998ec2864146d4def150d131908bc2ec75a6;hb=9042c664acc02475b9dbb9109d1a9ddb5d9180c0;hp=816e778bf1fc1e4f7538bc8b9cb8f70e928e1b62;hpb=d77d3212b85b3a67ccf11abab94aa8ddc389cf04;p=my-code%2Fhdw-sniff.git diff --git a/hdw-sniff.c b/hdw-sniff.c index 816e778..08f6998 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 { @@ -120,9 +124,11 @@ 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[11]; 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; @@ -157,6 +163,12 @@ 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); @@ -181,8 +193,12 @@ 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 if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)>0) - strcpy(tmp_buf,"beacon"); + else if((w_hdr->frame_ctl & IEEE802_11_STYPE_BEACON)==IEEE802_11_STYPE_BEACON) { + // beacon_hdr=(struct beacon_struct *)(package+p_o+w_o); + // printf("ssid: "); + // for(i=0;i<(((beacon_hdr->ssid)&0x2)>> + // 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) @@ -193,7 +209,7 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, strcpy(tmp_buf,"deauthentification"); else strcpy(tmp_buf,"impossible situation \%) - go mail the author."); } - else strcpy(tmp_buf,"control & monitor frame types not supported yet"); + else strcpy(tmp_buf,"control & data frame type not supported yet"); /* print out frame type */ printf("=> %s\n",tmp_buf); @@ -203,21 +219,58 @@ void pcap_process(u_char *info,const struct pcap_pkthdr *pcap_header, "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":":")); + + 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)) { + /* we want ip header to get parsed */ + e_hdr->h_proto=htons(ETH_P_IP); + e_o=sizeof(struct snaphdr); + } + } + else { + printf("- crypted packet!\n"); + /* print crypted snap - write into file */ + printf("snap: (iv + crypted aa aa 03 00 00 00) "); + for(i=0;i<10;i++) { + printf("%x ",*(snap_hdr->snap+i)); + crypted_snap[i]=*(snap_hdr->snap+i); + // if(file_fd>0) + // write(file_fd,snap_hdr->snap+i-4,1); + } + printf("\n"); + crypted_snap[10]='\n'; + if(file_fd>0) { + printf("debug: saved to file\n"); + write(file_fd,crypted_snap,11); + } + /* dont look at ipheader */ + e_hdr->h_proto=htons(0); + } + } /* IP ? */ if(ntohs(e_hdr->h_proto)==ETH_P_IP) { @@ -228,16 +281,16 @@ 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)); @@ -263,7 +316,7 @@ 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);