asleap: bump to 2.2_p20160730; fix errors while building; add community patches

This commit is contained in:
Yury Martynov 2019-09-21 17:50:34 +03:00
parent 66e7b10685
commit 4affce229b
No known key found for this signature in database
GPG key ID: EBE62DD0CCEAE19E
6 changed files with 527 additions and 21 deletions

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@ -1 +1 @@
DIST asleap-2.2.tgz 110622 SHA256 92beb6495a856884ca343787ab2f7c9d4b9d3aba21526c2e1f6ba38736c67a23
DIST asleap-2.2_p20160730.tar.gz 111453 BLAKE2B 1eaff9fa5bf9e47f5df76cac1a97be555570a060ae0184666bb6fa612292b102cbb9675e2b6486f2f871fe1e866339dda942494c6da6bb5ddbb60a0994aa868c SHA512 22dee22753f229adb882788a8e2b0b1e737c52ec908b40f4a683ea527066f2cd829e98e73a7446aa63a82db49608fdb56b2593d3b46f6977e8e390f8f0a1c896

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@ -1,20 +0,0 @@
# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
DESCRIPTION="exploiting cisco leap; As in asleap behind the wheel."
HOMEPAGE="http://www.willhackforsushi.com/Asleap.html"
SRC_URI="http://www.willhackforsushi.com/code/asleap/2.2/${P}.tgz"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="x86 amd64 arm"
IUSE=""
RDEPEND="net-libs/libpcap"
DEPEND="${RDEPEND}"
src_install() {
dosbin asleap
dobin genkeys
dodoc THANKS README || die
}

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@ -0,0 +1,45 @@
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit flag-o-matic toolchain-funcs
DESCRIPTION="Cisco LEAP and Generic MS-CHAPv2 Dictionary Attack"
HOMEPAGE="https://github.com/joswr1ght/asleap"
HASH_COMMIT="f8229d2fd800b36b34699a19f50a35981b1dcb49" # 20160730
SRC_URI="https://github.com/joswr1ght/asleap/archive/${HASH_COMMIT}.tar.gz -> ${P}.tar.gz"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE=""
RDEPEND="
dev-libs/openssl
net-libs/libpcap
sys-libs/libxcrypt"
DEPEND="${RDEPEND}"
S="${WORKDIR}/${PN}-${HASH_COMMIT}"
src_prepare() {
eapply "${FILESDIR}"
sed -e "s/-pipe//;s/-Wall//;s/-g3 -ggdb -g/${CFLAGS}/" \
-i Makefile || die
default
}
src_compile() {
emake CC=$(tc-getCC)
}
src_install() {
dosbin asleap
newbin genkeys asleap-genkeys
dodoc THANKS README
}

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@ -0,0 +1,131 @@
From 286cdcb625493b0bf2ab700715785207d51afad4 Mon Sep 17 00:00:00 2001
From: lager <machv@cesnet.cz>
Date: Wed, 17 Apr 2019 09:30:07 +0200
Subject: [PATCH] add simple password bruteforcing option
---
asleap.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
asleap.h | 2 ++
2 files changed, 63 insertions(+), 1 deletion(-)
diff --git a/asleap.c b/asleap.c
index f0c8b07..4804346 100644
--- a/asleap.c
+++ b/asleap.c
@@ -69,6 +69,9 @@ struct pcap_pkthdr h;
char errbuf[PCAP_ERRBUF_SIZE];
int success = 0; /* For return status of attack */
unsigned long pcount=0;
+/* for password generation */
+const char * charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
/* prototypes */
void usage(char *message);
@@ -92,6 +95,8 @@ int testpptpchal(struct asleap_data *asleap_ptr, int plen, int offset);
int testpptpresp(struct asleap_data *asleap_ptr, int plen, int offset);
int testpptpsuccess(struct asleap_data *asleap_ptr, int plen, int offset);
void genchalhash(struct asleap_data *asleap);
+int trypasswords(struct asleap_data *asleap_ptr);
+int permute(struct asleap_data *asleap_ptr, int level, char * password);
int stripname(char *name, char *stripname, int snamelen, char delim)
@@ -360,6 +365,54 @@ int getmschapbrute(struct asleap_data *asleap_ptr)
return 0;
}
+/* try generating passwords and hashes based on command line params */
+int trypasswords(struct asleap_data *asleap_ptr)
+{
+ char password[MAX_NT_PASSWORD + 1] = {0}; /* should be dynamically allocated based on input param */
+ int ret;
+
+ for(int i = 0; i < asleap_ptr->pass_len; i++) { /* iterate password length from 1 to desired length */
+ ret = permute(asleap_ptr, i, password);
+
+ if(ret == 0)
+ printf("no matching password found for length %d\n", i + 1);
+ else
+ return ret;
+ }
+
+ return ret;
+}
+
+/* generate all possible charset combinations */
+int permute(struct asleap_data *asleap_ptr, int level, char * password)
+{
+ const char* charset_ptr = charset;
+ unsigned char pwhash[MD4_SIGNATURE_SIZE];
+
+ if(level == -1) { /* got generated password */
+ /* debug */
+ /* printf("%s\n", password); */
+ NtPasswordHash(password, strlen(password), pwhash);
+
+ if (pwhash[14] != asleap_ptr->endofhash[0] ||
+ pwhash[15] != asleap_ptr->endofhash[1])
+ return 0;
+
+ if (testchal(asleap_ptr, pwhash) == 0) {
+ /* Found a matching password! w00t! */
+ memcpy(asleap_ptr->nthash, pwhash, 16);
+ strncpy(asleap_ptr->password, password,
+ strlen(password));
+ return (1);
+ }
+ } else
+ while(password[level] = *(charset_ptr++)) /* keep going */
+ if(permute(asleap_ptr, level - 1, password) == 1)
+ return 1; /* found */
+
+ return 0; /* nothing found */
+}
+
/* Brute-force all the matching NT hashes to discover the clear-text password */
int getmschappw(struct asleap_data *asleap_ptr)
{
@@ -942,6 +995,9 @@ int attack_leap(struct asleap_data *asleap)
if (!IsBlank(asleap->wordfile)) {
/* Attack MS-CHAP exchange with a straight dictionary list */
getmschappwret = getmschapbrute(asleap);
+ } else if(asleap->gen_password) {
+ /* Attack MS-CHAP exchange with brute-force password generation */
+ getmschappwret = trypasswords(asleap);
} else {
getmschappwret = getmschappw(asleap);
}
@@ -1413,7 +1469,7 @@ int main(int argc, char *argv[])
printf("asleap %s - actively recover LEAP/PPTP passwords. "
"<jwright@hasborg.com>\n", VER);
- while ((c = getopt(argc, argv, "DsoavhVi:f:n:r:w:c:t:W:C:R:")) != EOF) {
+ while ((c = getopt(argc, argv, "DsoavhVi:f:n:r:w:c:t:W:C:R:G:")) != EOF) {
switch (c) {
case 's':
asleap.skipeapsuccess = 1;
@@ -1492,6 +1548,10 @@ int main(int argc, char *argv[])
strncpy(asleap.wordfile, optarg,
sizeof(asleap.wordfile) - 1);
break;
+ case 'G':
+ asleap.gen_password = 1;
+ sscanf(optarg, "%d", &asleap.pass_len); /* save desired password lentgh */
+ break;
default:
usage("");
exit(1);
diff --git a/asleap.h b/asleap.h
index 1225fec..0c3666e 100644
--- a/asleap.h
+++ b/asleap.h
@@ -61,6 +61,8 @@ struct asleap_data {
int eapsuccess;
int skipeapsuccess; /* Don't bother checking for success after auth */
int verbose;
+ int gen_password;
+ int pass_len;
char dictfile[255];
char dictidx[255];
char wordfile[255];

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@ -0,0 +1,326 @@
diff -ur a/asleap.c b/asleap.c
--- a/asleap.c 2019-09-21 17:06:53.618088000 +0300
+++ b/asleap.c 2019-09-21 17:39:01.259048608 +0300
@@ -45,6 +45,7 @@
#include <netpacket/packet.h>
#include <linux/if.h>
#include <linux/wireless.h>
+#include <openssl/sha.h>
#include "asleap.h"
#include "utils.h"
@@ -303,12 +304,33 @@
{
unsigned char cipher[8];
+ int j;
DesEncrypt(asleap_ptr->challenge, zpwhash, cipher);
+
+ printf("\tgiven hash 1: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", cipher[j]);
+ printf("\n");
+ printf("\tresponse hash 1: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", asleap_ptr->response[j]);
+ printf("\n");
+
if (memcmp(cipher, asleap_ptr->response, 8) != 0)
return (1);
DesEncrypt(asleap_ptr->challenge, zpwhash + 7, cipher);
+
+ printf("\tgiven hash 2: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", cipher[j]);
+ printf("\n");
+ printf("\tresponse hash 2: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", asleap_ptr->response[j+8]);
+ printf("\n");
+
if (memcmp(cipher, asleap_ptr->response + 8, 8) != 0)
return (1);
@@ -948,23 +970,40 @@
void genchalhash(struct asleap_data *asleap)
{
- SHA1_CTX context;
unsigned char digest[SHA1_MAC_LEN];
char strippedname[256];
int j;
+ memset(digest, 0, SHA1_MAC_LEN);
+ memset(strippedname, 0, 256);
+
/* RFC2759 indicates a username "BIGCO\johndoe" must be stripped to
contain only the username for the purposes of generating the 8-byte
challenge. Section 4, */
stripname(asleap->username, strippedname, sizeof(strippedname), '\\');
+/* SHA1_CTX context;
SHA1Init(&context);
SHA1Update(&context, asleap->pptppeerchal, 16);
SHA1Update(&context, asleap->pptpauthchal, 16);
SHA1Update(&context, (uint8_t *)strippedname, strlen(strippedname));
SHA1Final(digest, &context);
- memcpy(&asleap->challenge, digest, 8);
+ printf("\tchallenge: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", digest[j]);
+ printf("\n");
+
+ memcpy(asleap->challenge, digest, 8);*/
+
+ uint8_t str[300];
+ memcpy(str, asleap->pptppeerchal, 16);
+ memcpy(str+16, asleap->pptpauthchal, 16);
+ memcpy(str+32, strippedname, strlen(strippedname));
+
+ SHA1(str, 32 + strlen(strippedname), digest);
+
+ memcpy(asleap->challenge, digest, 8);
printf("\tchallenge: ");
for (j = 0; j < 8; j++)
@@ -1455,6 +1494,7 @@
unsigned int findlpexchret = 0;
int ret=0;
extern int success;
+ uint8_t verifypassword = 0;
memset(dictfile, 0, sizeof(dictfile));
memset(dictidx, 0, sizeof(dictidx));
@@ -1469,41 +1509,108 @@
printf("asleap %s - actively recover LEAP/PPTP passwords. "
"<jwright@hasborg.com>\n", VER);
- while ((c = getopt(argc, argv, "DsoavhVi:f:n:r:w:c:t:W:C:R:G:")) != EOF) {
+ while ((c = getopt(argc, argv, "DsoavhVi:f:n:r:w:c:t:W:C:R:A:B:U:P:")) != EOF) {
switch (c) {
case 's':
asleap.skipeapsuccess = 1;
break;
case 'C':
- if (strlen(optarg) != 23) {
- usage("Incorrect challenge input length "
- "specified.\n");
- exit(1);
- }
- if (str2hex(optarg, asleap.challenge,
+ if (strlen(optarg) == 23) {
+ if (str2hex(optarg, asleap.challenge,
sizeof(asleap.challenge)) < 0) {
- usage("Malformed value specified as "
+ usage("Malformed value specified as "
"challenge.\n");
+ exit(1);
+ }
+ } else if (strlen(optarg) == 16) {
+ if (decodeHexString(optarg, asleap.challenge,
+ sizeof(asleap.challenge)) < 0) {
+ usage("Malformed value specified as "
+ "challenge.\n");
+ exit(1);
+ }
+ } else {
+ usage("Incorrect challenge input length "
+ "specified.\n");
exit(1);
}
+
asleap.leapchalfound=1;
asleap.manualchalresp=1;
break;
case 'R':
- if (strlen(optarg) != 71) {
- usage("Incorrect response input length "
- "specified.\n");
- exit(1);
- }
- if (str2hex(optarg, asleap.response,
+ if (strlen(optarg) == 71) {
+ if (str2hex(optarg, asleap.response,
+ sizeof(asleap.response)) < 0) {
+ usage("Malformed value specified as "
+ "response.\n");
+ exit(1);
+ }
+ } else if (strlen(optarg) == 48) {
+ if (decodeHexString(optarg, asleap.response,
sizeof(asleap.response)) < 0) {
- usage("Malformed value specified as "
+ usage("Malformed value specified as "
"response.\n");
+ exit(1);
+ }
+ } else {
+ usage("Incorrect response input length "
+ "specified.\n");
exit(1);
}
+
asleap.leaprespfound=1;
asleap.manualchalresp=1;
break;
+ case 'A':
+ if (strlen(optarg) == 47) {
+ if (str2hex(optarg, asleap.pptppeerchal,
+ sizeof(asleap.pptppeerchal)) < 0) {
+ usage("Malformed value specified as "
+ "challenge.\n");
+ exit(1);
+ }
+ } else if (strlen(optarg) == 32) {
+ if (decodeHexString(optarg, asleap.pptppeerchal,
+ sizeof(asleap.pptppeerchal)) < 0) {
+ usage("Malformed value specified as "
+ "challenge.\n");
+ exit(1);
+ }
+ } else {
+ usage("Incorrect challenge input length "
+ "specified.\n");
+ exit(1);
+ }
+ break;
+ case 'B':
+ if (strlen(optarg) == 47) {
+ if (str2hex(optarg, asleap.pptpauthchal,
+ sizeof(asleap.pptpauthchal)) < 0) {
+ usage("Malformed value specified as "
+ "challenge.\n");
+ exit(1);
+ }
+ } else if (strlen(optarg) == 32) {
+ if (decodeHexString(optarg, asleap.pptpauthchal,
+ sizeof(asleap.pptpauthchal)) < 0) {
+ usage("Malformed value specified as "
+ "challenge.\n");
+ exit(1);
+ }
+ } else {
+ usage("Incorrect challenge input length "
+ "specified.\n");
+ exit(1);
+ }
+ break;
+ case 'U':
+ memcpy(asleap.username, optarg, strlen(optarg));
+ break;
+ case 'P':
+ verifypassword = 1;
+ memcpy(asleap.password, optarg, strlen(optarg));
+ break;
case 'i':
if (atoi(optarg) == 0) {
device = optarg;
@@ -1563,7 +1670,7 @@
strncpy(asleap.dictfile, dictfile, sizeof(asleap.dictfile) - 1);
strncpy(asleap.dictidx, dictidx, sizeof(asleap.dictidx) - 1);
- if (IsBlank(device) && IsBlank(pcapfile) && !asleap.manualchalresp) {
+ if (IsBlank(device) && IsBlank(pcapfile) && !asleap.manualchalresp && !verifypassword) {
usage ("Must supply an interface with -i, or a stored file "
"with -r");
exit(1);
@@ -1594,6 +1701,37 @@
return(attack_leap(&asleap));
}
+ if (verifypassword) {
+
+ int j;
+
+ genchalhash(&asleap);
+
+ /*uint8_t challenge[8] = {0xD0, 0x2E, 0x43, 0x86, 0xBC, 0xE9, 0x12, 0x26};
+ memcpy(asleap.challenge, challenge, 8);
+
+ printf("\tchallenge: ");
+ for (j = 0; j < 8; j++)
+ printf("%02x", challenge[j]);
+ printf("\n");*/
+
+ unsigned char pwhash[MD4_SIGNATURE_SIZE];
+ NtPasswordHash(asleap.password, strlen(asleap.password), pwhash);
+
+ int result = testchal(&asleap, pwhash);
+
+ print_pptpexch(&asleap);
+
+ printf("\tpassword hash: ");
+ for (j = 0; j < MD4_SIGNATURE_SIZE; j++)
+ printf("%02x", pwhash[j]);
+ printf("\n");
+
+ printf("Result is %i\n", result);
+
+ return 0;
+ }
+
/* If the user passed the -r flag, open the filename as a captured pcap
file. Otherwise open live from the supplied device name */
if (!IsBlank(pcapfile)) {
diff -ur a/Makefile b/Makefile
--- a/Makefile 2016-08-30 16:01:23.000000000 +0300
+++ b/Makefile 2019-09-21 17:07:47.212366273 +0300
@@ -10,7 +10,7 @@
LDLIBS = -lpcap -lcrypt
CFLAGS = -pipe -Wall -D_LINUX -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I../../..
CFLAGS += -D_OPENSSL_MD4
-LDLIBS += -lcrypto
+LDLIBS += -lcrypto -lssl
CFLAGS += -g3 -ggdb -g
PROGOBJ = asleap.o genkeys.o utils.o common.o sha1.o
PROG = asleap genkeys
diff -ur a/utils.c b/utils.c
--- a/utils.c 2016-08-30 16:01:23.000000000 +0300
+++ b/utils.c 2019-09-21 17:42:23.226864061 +0300
@@ -243,3 +243,35 @@
return(1);
}
+
+int decodeHexString (char *hexstr, uint8_t *result, int len)
+{
+ char *ptr, *next;
+ unsigned long val;
+ int i;
+
+ char tmp[3];
+ tmp[2] = '\0';
+
+ if (strlen(hexstr) != 2*len) {
+ errno = EINVAL;
+ return(-1);
+ }
+
+ ptr = next = hexstr;
+ for(i=0;i < len;i++) {
+ memcpy(tmp, ptr, 2);
+ if((val = strtoul(tmp, NULL, 16)) > 255) {
+ errno = EINVAL;
+ return(-1);
+ }
+ result[i] = (unsigned int)val;
+ ptr += 2;
+ if((ptr[0] == '\0' || ptr[1] == '\0') && (i != len - 1)) {
+ errno = EINVAL;
+ return(-1);
+ }
+ }
+
+ return(1);
+}
diff -ur a/utils.h b/utils.h
--- a/utils.h 2016-08-30 16:01:23.000000000 +0300
+++ b/utils.h 2019-09-21 17:42:50.529515030 +0300
@@ -33,3 +33,4 @@
int IsBlank(char *s);
char *printmac(unsigned char *mac);
int str2hex (char *string, uint8_t *hexstr, int len);
+int decodeHexString (char *hexstr, uint8_t *result, int len);

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@ -0,0 +1,24 @@
diff -ur a/Makefile b/Makefile
--- a/Makefile 2016-08-30 16:01:23.000000000 +0300
+++ b/Makefile 2019-09-21 17:02:49.398265589 +0300
@@ -7,7 +7,7 @@
# <dragorn> i think thats all anyone does
# <dragorn> make is a twisted beast
##################################
-LDLIBS = -lpcap -lcrypt
+LDLIBS = -lpcap -lxcrypt
CFLAGS = -pipe -Wall -D_LINUX -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I../../..
CFLAGS += -D_OPENSSL_MD4
LDLIBS += -lcrypto
diff -ur a/utils.c b/utils.c
--- a/utils.c 2016-08-30 16:01:23.000000000 +0300
+++ b/utils.c 2019-09-21 16:49:08.191685747 +0300
@@ -27,7 +27,7 @@
#include <stdarg.h>
#include <string.h>
#include <stdint.h>
-#include <crypt.h>
+#include <xcrypt.h>
#include <unistd.h>
#include <ctype.h>
#include <netinet/in.h> /* for ntohs() */