A script to monitor messages in a WhatsApp socket - If you find this useful, please donate ( https://github.com/sponsors/Purpshell ) :D

inject.js

// some code to inject into whatsapp web, handles socket message decryption and logging and also provides Store.
// Copyright PurpShell/Rajeh Taher ~ 2023
// also, check out my GitHub Sponsors @purpshell if you find this useful to you!
if (!window.mR) {
  const moduleRaid = function () {
    moduleRaid.mID = Math.random().toString(36).substring(7);
    moduleRaid.mObj = {};

    fillModuleArray = function () {
      (window.webpackChunkbuild || window.webpackChunkwhatsapp_web_client).push([
        [moduleRaid.mID], {}, function (e) {
          Object.keys(e.m).forEach(function (mod) {
            moduleRaid.mObj[mod] = e(mod);
          })
        }
      ]);
    }

    fillModuleArray();

    get = function get(id) {
      return moduleRaid.mObj[id]
    }

    findModule = function findModule(query) {
      results = [];
      modules = Object.keys(moduleRaid.mObj);

      modules.forEach(function (mKey) {
        mod = moduleRaid.mObj[mKey];

        if (typeof mod !== 'undefined') {
          if (typeof query === 'string') {
            if (typeof mod.default === 'object') {
              for (key in mod.default) {
                if (key == query) results.push(mod);
              }
            }

            for (key in mod) {
              if (key == query) results.push(mod);
            }
          } else if (typeof query === 'function') {
            if (query(mod)) {
              results.push(mod);
            }
          } else {
            throw new TypeError('findModule can only find via string and function, ' + (typeof query) + ' was passed');
          }

        }
      })

      return results;
    }

    return {
      modules: moduleRaid.mObj,
      constructors: moduleRaid.cArr,
      findModule: findModule,
      get: get
    }
  }

  window.mR = moduleRaid();
}

if (!window.Store) {
    window.Store = Object.assign({}, window.mR.findModule(m => m.default && m.default.Chat)[0].default);
    window.Store.AppState = window.mR.findModule('Socket')[0].Socket;
    window.Store.Conn = window.mR.findModule('Conn')[0].Conn;
    window.Store.BlockContact = window.mR.findModule('blockContact')[0];
    window.Store.Call = window.mR.findModule((module) => module.default && module.default.Call)[0].default.Call;
    window.Store.Cmd = window.mR.findModule('Cmd')[0].Cmd;
    window.Store.CryptoLib = window.mR.findModule('decryptE2EMedia')[0];
    window.Store.DownloadManager = window.mR.findModule('downloadManager')[0].downloadManager;
    window.Store.GroupMetadata = window.mR.findModule('GroupMetadata')[0].default.GroupMetadata;
    window.Store.Invite = window.mR.findModule('resetGroupInviteCode')[0];
    window.Store.InviteInfo = window.mR.findModule('queryGroupInvite')[0];
    window.Store.Label = window.mR.findModule('LabelCollection')[0].LabelCollection;
    window.Store.MediaPrep = window.mR.findModule('prepRawMedia')[0];
    window.Store.MediaObject = window.mR.findModule('getOrCreateMediaObject')[0];
    window.Store.NumberInfo = window.mR.findModule('formattedPhoneNumber')[0];
    window.Store.MediaTypes = window.mR.findModule('msgToMediaType')[0];
    window.Store.MediaUpload = window.mR.findModule('uploadMedia')[0];
    window.Store.MsgKey = window.mR.findModule((module) => module.default && module.default.fromString)[0].default;
    window.Store.MessageInfo = window.mR.findModule('sendQueryMsgInfo')[0];
    window.Store.OpaqueData = window.mR.findModule(module => module.default && module.default.createFromData)[0].default;
    window.Store.QueryExist = window.mR.findModule('queryExists')[0] ? window.mR.findModule('queryExists')[0].queryExists : window.mR.findModule('queryExist')[0].queryWidExists;
    window.Store.QueryProduct = window.mR.findModule('queryProduct')[0];
    window.Store.QueryOrder = window.mR.findModule('queryOrder')[0];
    window.Store.SendClear = window.mR.findModule('sendClear')[0];
    window.Store.SendDelete = window.mR.findModule('sendDelete')[0];
    window.Store.SendMessage = window.mR.findModule('addAndSendMsgToChat')[0];
    window.Store.EditMessage = window.mR.findModule('addAndSendMessageEdit')[0];
    window.Store.SendSeen = window.mR.findModule('sendSeen')[0];
    window.Store.User = window.mR.findModule('getMaybeMeUser')[0];
    window.Store.ContactMethods = window.mR.findModule('getUserid')[0];
    window.Store.BusinessProfileCollection = window.mR.findModule('BusinessProfileCollection')[0].BusinessProfileCollection;
    window.Store.UploadUtils = window.mR.findModule((module) => (module.default && module.default.encryptAndUpload) ? module.default : null)[0].default;
    window.Store.UserConstructor = window.mR.findModule((module) => (module.default && module.default.prototype && module.default.prototype.isServer && module.default.prototype.isUser) ? module.default : null)[0].default;
    window.Store.Validators = window.mR.findModule('findLinks')[0];
    window.Store.VCard = window.mR.findModule('vcardFromContactModel')[0];
    window.Store.WidFactory = window.mR.findModule('createWid')[0];
    window.Store.ProfilePic = window.mR.findModule('profilePicResync')[0];
    window.Store.PresenceUtils = window.mR.findModule('sendPresenceAvailable')[0];
    window.Store.ChatState = window.mR.findModule('sendChatStateComposing')[0];
    window.Store.GroupParticipants = window.mR.findModule('promoteParticipants')[0];
    window.Store.JoinInviteV4 = window.mR.findModule('queryGroupInviteV4')[0];
    window.Store.findCommonGroups = window.mR.findModule('findCommonGroups')[0].findCommonGroups;
    window.Store.StatusUtils = window.mR.findModule('setMyStatus')[0];
    window.Store.ConversationMsgs = window.mR.findModule('loadEarlierMsgs')[0];
    window.Store.sendReactionToMsg = window.mR.findModule('sendReactionToMsg')[0].sendReactionToMsg;
    window.Store.createOrUpdateReactionsModule = window.mR.findModule('createOrUpdateReactions')[0];
    window.Store.EphemeralFields = window.mR.findModule('getEphemeralFields')[0];
    window.Store.ReplyUtils = window.mR.findModule('canReplyMsg').length > 0 && window.mR.findModule('canReplyMsg')[0];
    window.Store.MsgActionChecks = window.mR.findModule('canSenderRevokeMsg')[0];
    window.Store.QuotedMsg = window.mR.findModule('getQuotedMsgObj')[0];
    window.Store.Socket = window.mR.findModule('deprecatedSendIq')[0];
    window.Store.SocketWap = window.mR.findModule('wap')[0];
    window.Store.SearchContext = window.mR.findModule('getSearchContext')[0].getSearchContext;
    window.Store.DrawerManager = window.mR.findModule('DrawerManager')[0].DrawerManager;
    window.Store.StickerTools = {
        ...window.mR.findModule('toWebpSticker')[0],
        ...window.mR.findModule('addWebpMetadata')[0]
    };
  
    window.Store.GroupUtils = {
        ...window.mR.findModule('createGroup')[0],
        ...window.mR.findModule('setGroupDescription')[0],
        ...window.mR.findModule('sendExitGroup')[0],
        ...window.mR.findModule('sendSetPicture')[0]
    };

    if (!window.Store.Chat._find) {
        window.Store.Chat._find = e => {
            const target = window.Store.Chat.get(e);
            return target ? Promise.resolve(target) : Promise.resolve({
                id: e
            });
        };
    }

    if (window.mR.findModule('ChatCollection')[0] && window.mR.findModule('ChatCollection')[0].ChatCollection) {
        if (typeof window.mR.findModule('ChatCollection')[0].ChatCollection.findImpl === 'undefined' && typeof window.mR.findModule('ChatCollection')[0].ChatCollection._find != 'undefined') {
            window.mR.findModule('ChatCollection')[0].ChatCollection.findImpl = window.mR.findModule('ChatCollection')[0].ChatCollection._find;
        }
    }

    /**
     * Helper function that compares between two WWeb versions. Its purpose is to help the developer to choose the correct code implementation depending on the comparison value and the WWeb version.
     * @param {string} lOperand The left operand for the WWeb version string to compare with
     * @param {string} operator The comparison operator
     * @param {string} rOperand The right operand for the WWeb version string to compare with
     * @returns {boolean} Boolean value that indicates the result of the comparison
     */
    window.compareWwebVersions = (lOperand, operator, rOperand) => {
        if (!['>', '>=', '<', '<=', '='].includes(operator)) {
            throw new class _ extends Error {
                constructor(m) { super(m); this.name = 'CompareWwebVersionsError'; }
            }('Invalid comparison operator is provided');

        }
        if (typeof lOperand !== 'string' || typeof rOperand !== 'string') {
            throw new class _ extends Error {
                constructor(m) { super(m); this.name = 'CompareWwebVersionsError'; }
            }('A non-string WWeb version type is provided');
        }

        lOperand = lOperand.replace(/-beta$/, '');
        rOperand = rOperand.replace(/-beta$/, '');

        while (lOperand.length !== rOperand.length) {
            lOperand.length > rOperand.length
                ? rOperand = rOperand.concat('0')
                : lOperand = lOperand.concat('0');
        }

        lOperand = Number(lOperand.replace(/\./g, ''));
        rOperand = Number(rOperand.replace(/\./g, ''));

        return (
            operator === '>' ? lOperand > rOperand :
                operator === '>=' ? lOperand >= rOperand :
                    operator === '<' ? lOperand < rOperand :
                        operator === '<=' ? lOperand <= rOperand :
                            operator === '=' ? lOperand === rOperand :
                                false
        );
    };


if (!window.decodeBackStanza) {
  window.decodeBackStanza = (window.mR.findModule('decodeStanza')[0]).decodeStanza;
  window.encodeBackStanza = (window.mR.findModule('encodeStanza')[0]).encodeStanza;
}


(window.mR.findModule('decodeStanza')[0]).decodeStanza = async (e, t) => {
  const result = await window.decodeBackStanza(e, t);

  console.log('[INFO] coming from whatsapp, tag:' + result.tag + ' , xmlns:' + result.attrs?.xmlns + ' , type:' + result.attrs?.type, result);
  return result;
}


(window.mR.findModule('encodeStanza')[0]).encodeStanza = (...args) => {
  const result = window.encodeBackStanza(...args);

  console.log('[INFO] going to whatsapp, tag:' + args[0].tag + ' , xmlns:' + args[0].attrs?.xmlns + ' , type:' + args[0].attrs?.type, args[0]);
  return result;
}

It is possible that it is missing a } since I see a syntax error, but it is great, I have checked it

Please use the new tool for 2.3000x and above: https://gist.github.com/PurpShell/13f198b996b46e3e783bee1ef06d1a35

VM513:69 Uncaught TypeError: Cannot read properties of undefined (reading 'default')
at :69:95