Initial commit

.babelrc

+{
+  "presets": [
+    "es2015",
+    "react"
+  ],
+  "plugins": [
+    ["transform-react-jsx", { "pragma":"h" }]
+  ]
+}
\ No newline at end of file

.gitignore

+\.idea/
+out/
+build
+.gradle/
+*.iml
+node_modules
+.vscode
+app.log*
\ No newline at end of file

.gitlab-ci.yml

+image: openjdk:8-stretch
+
+stages:
+- build
+- deploy
+
+build jar:
+    stage: build
+    script:
+    - chmod a+x ./gradlew
+    - ./gradlew -Pprod bootJar
+    artifacts:
+        paths:
+        - build/libs/*.jar
+
+push to cloudfoundry:
+    stage: deploy
+    script:
+    - curl --location "https://cli.run.pivotal.io/stable?release=linux64-binary&source=github" | tar zx
+    - ./cf login -u $CF_USERNAME -p $CF_PASSWORD -a api.run.pivotal.io
+    - ./cf push
+

README.md

+# Enoncé TP : Capture the flag
+
+## Mission 1 
+Le but de cette mission est de récupérer un _indice précieux_. 
+Cette adresse est stocké dans les données internes de ce [site](https://capture-the-flag-surprised-klipspringer.cfapps.io/).
+Heureusement vous avez eu accès au code source de l'application, bien que les infos clés comme le mot de passe de la base de données ne sont pas présentes.
+
+Pour cette mission vous n'avez pas besoin d'outils de hacking ni de connaissance particulière dans ce domaine. 
+
+### Pour lancer l'appli en local
+- exécuter la tâche Gradle bootRun et connectez-vous à http://localhost:8745
+
+## Mission 2
+La 2ème mission consiste à récupérer l'adresse du drapeau, qui ne peut être consulter qu'en se connectant à la la base de données.
+Vous devez utiliser l'indice de la mission 1 pour y parvenir.
+ 
+Pour cette mission vous n'avez pas besoin d'outils de hacking. Cette fois il faut cependant exploiter une vulnérabilité de type XSS pour trouver la faille. 
+
+

build.gradle

+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.5.RELEASE")
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'io.spring.dependency-management'
+
+group 'org.isima.tp'
+version '1.0'
+
+bootJar {
+    baseName = 'binome1'
+    version =  '1.0'
+}
+
+repositories {
+    mavenCentral()
+}
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencies {
+    compile 'org.springframework.boot:spring-boot-starter-web'
+    compile 'org.springframework.boot:spring-boot-starter-data-jpa'
+    compile 'com.h2database:h2:1.4.197'
+    compile 'org.glassfish.jaxb:jaxb-runtime:2.4.0-b180830.0438'
+    compile 'org.javassist:javassist:3.23.1-GA'
+    compile 'io.jsonwebtoken:jjwt-api:0.10.5'
+    compile 'io.jsonwebtoken:jjwt-impl:0.10.5'
+    compile 'io.jsonwebtoken:jjwt-jackson:0.10.5'
+    compile 'com.sendgrid:sendgrid-java:2.2.2'
+}

gradle/wrapper/gradle-wrapper.properties

+#Wed Oct 31 21:50:57 CET 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-all.zip

gradlew

+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

manifest.yml

+---
+applications:
+- name: capture-the-flag
+  random-route: true
+  memory: 1G
+  path: build/libs/binome1-1.0.jar
+  env:
+    SPRING_PROFILES_ACTIVE: cloud
+    JBP_CONFIG_JMX: '{enabled: true}'

package.json

+{
+  "name": "tp-front",
+  "version": "1.0.0",
+  "description": "Preact front tp capture-the-flag ISIMA",
+  "author": "Benjamin CAURE",
+  "license": "MIT",
+  "dependencies": {
+    "preact": "^8.1.0",
+    "preact-router": "^2.4.1"
+  },
+  "devDependencies": {
+    "babel-core": "^6.22.1",
+    "babel-loader": "^6.2.10",
+    "babel-plugin-transform-react-jsx": "^6.22.0",
+    "babel-preset-es2015": "^6.22.0",
+    "babel-preset-react": "^6.22.0",
+    "css-loader": "^0.26.1",
+    "extract-text-webpack-plugin": "2.0.0",
+    "html-webpack-plugin": "^2.28.0",
+    "http-server": "^0.9.0",
+    "offline-plugin": "^4.6.1",
+    "style-loader": "^0.13.2",
+    "svg-inline-loader": "^0.7.1",
+    "webpack": "^3.0.0",
+    "webpack-dev-server": "^2.5.0"
+  },
+  "scripts": {
+    "start": "webpack-dev-server --config ./webpack/webpack.config.dev.babel.js --env=developement",
+    "prod:linux": "NODE_ENV=production webpack --config ./webpack/webpack.config.prod.babel.js --env=production",
+    "prod:windows": "set NODE_ENV=production && webpack --config ./webpack/webpack.config.prod.babel.js --env=production",
+    "prod:start": "http-server src/main/resources/assets/"
+  }
+}

settings.gradle

+rootProject.name = 'binome1'
+

src/main/java/org/isima/tp/Application.java

+package org.isima.tp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Configuration;
+
+@SpringBootApplication
+@Configuration
+public class Application {
+
+  public static void main(String[] args) {
+    SpringApplication.run(Application.class, args);
+  }
+
+}

src/main/java/org/isima/tp/CurrentUser.java

+package org.isima.tp;
+
+
+import org.isima.tp.model.AppUser;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Component;
+
+@Component
+@Scope(value="request", proxyMode= ScopedProxyMode.TARGET_CLASS)
+public class CurrentUser {
+  private AppUser appUser;
+
+  public AppUser getAppUser() {
+    return appUser;
+  }
+
+  @SuppressWarnings("UnusedReturnValue")
+  public CurrentUser setAppUser(AppUser appUser) {
+    this.appUser = appUser;
+    return this;
+  }
+}
+

src/main/java/org/isima/tp/Mail.java

+package org.isima.tp;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.sendgrid.SendGrid;
+import java.io.IOException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+@Configuration
+@Profile("cloud")
+public class Mail {
+
+  private static final Logger LOG = LoggerFactory.getLogger(Mail.class);
+
+  @Bean
+  public SendGrid mailSender() {
+
+    String vcapServicesJson = System.getenv("VCAP_SERVICES");
+    ObjectMapper mapper = new ObjectMapper();
+    SendGrid sendgrid = null;
+    try {
+      JsonNode actualObj = mapper.readTree(vcapServicesJson);
+      JsonNode sendgridNode = actualObj.get("sendgrid");
+      JsonNode credentialsNode = sendgridNode.elements().next().get("credentials");
+      LOG.error(credentialsNode.get("password").asText());
+      sendgrid = new SendGrid(credentialsNode.get("username").asText(), credentialsNode.get("password").asText());
+    } catch (IOException e) {
+      LOG.error(null, e);
+    }
+
+    return sendgrid;
+  }
+
+}

src/main/java/org/isima/tp/SecurityFilter.java

+package org.isima.tp;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jws;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.security.Keys;
+import java.io.IOException;
+import java.util.Optional;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.isima.tp.model.AppUser;
+import org.isima.tp.repository.CommunityRepository;
+import org.isima.tp.repository.UserRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+@Component
+public class SecurityFilter extends OncePerRequestFilter {
+
+  private static final Logger LOG = LoggerFactory.getLogger(SecurityFilter.class);
+  @Value("${security.jwt.uri:/auth/**}")
+  private String uri;
+
+  @Value("${security.jwt.prefix:Bearer }")
+  private String prefix;
+
+  @Value("${security.jwt.secret}")
+  private String secret;
+
+  @Autowired
+  private UserRepository userRepository;
+
+  @Autowired
+  private CommunityRepository communityRepository;
+
+  @Autowired
+  CurrentUser currentUser;
+
+  @Override
+  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
+  throws ServletException, IOException {
+
+    // 1. get the authentication header. Tokens are supposed to be passed in the authentication header
+    String header = request.getHeader("Authorization");
+
+    // 2. validate the header and check the prefix
+    if (header == null || !header.startsWith("Bearer")) {
+      chain.doFilter(request, response); // If not valid, go to the next filter.
+      return;
+    }
+
+    // If there is no token provided and hence the user won't be authenticated.
+    // It's Ok. Maybe the user accessing a public path or asking for a token.
+
+    // All secured paths that needs a token are already defined and secured in config class.
+    // And If user tried to access without access token, then he won't be authenticated and an exception will be thrown.
+
+    // 3. Get the token
+    String token = header.replace("Bearer", "");
+
+    try {  // exceptions might be thrown in creating the claims if for example the token is expired
+
+      // 4. Validate the token
+      Jws<Claims> claims = Jwts.parser().setSigningKey(Keys.hmacShaKeyFor(secret.getBytes()))
+          .parseClaimsJws(token);
+
+      String email = claims.getBody().getSubject();
+      if (email != null) {
+        // 5. Create auth object
+        // Now, user is authenticated
+        Optional<AppUser> optional = userRepository.findById(email);
+        optional.ifPresent(appUser -> currentUser.setAppUser(appUser));
+      }
+
+    } catch (Exception e) {
+      LOG.error(null, e);
+      // In case of failure. Make sure it's clear; so guarantee user won't be authenticated
+      currentUser.setAppUser(null);
+    }
+
+    // go to the next filter in the filter chain
+    chain.doFilter(request, response);
+  }
+}

src/main/java/org/isima/tp/controller/AdminController.java

+package org.isima.tp.controller;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.isima.tp.CurrentUser;
+import org.isima.tp.model.Community;
+import org.isima.tp.model.Config;
+import org.isima.tp.repository.ConfigRepository;
+import org.isima.tp.util.Cipher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+