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simplify func detection

This commit is contained in:
hyugogirubato 2024-11-01 19:42:44 +01:00
parent 779c5a09e5
commit ec098e9aed
1 changed files with 35 additions and 5 deletions
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40
keydive/keydive.js
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@ -371,6 +371,29 @@ const RunningCRC = (address) => {
}); });
} }
const GetSystemId = (address) => {
/*
wvcdm::CryptoSession::GetSystemId
Args:
args[0]: wvcdm::CryptoSession *this
args[1]: uint *
*/
Interceptor.attach(address, {
onEnter: function (args) {
// print(Level.DEBUG, '[+] onEnter: GetSystemId');
// read registry memory (__readgsdword(0x14u))
const data = Memory.readByteArray(args[2], 128);
print(Level.DEBUG, '[*] GetSystemId');
send('keybox', data);
},
onLeave: function (retval) {
// print(Level.DEBUG, '[-] onLeave: GetSystemId');
}
});
}
// @Hooks // @Hooks
const hookLibrary = (name) => { const hookLibrary = (name) => {
@ -395,32 +418,39 @@ const hookLibrary = (name) => {
const hooked = []; const hooked = [];
functions.forEach(func => { functions.forEach(func => {
let required = false;
const {name: funcName, address: funcAddr} = func; const {name: funcName, address: funcAddr} = func;
if (func.type !== 'function' || hooked.includes(funcAddr)) return; if (func.type !== 'function' || hooked.includes(funcAddr)) return;
try { try {
if (funcName.includes('UsePrivacyMode')) { if (funcName.includes('UsePrivacyMode')) {
UsePrivacyMode(funcAddr); UsePrivacyMode(funcAddr);
required = true;
} else if (funcName.includes('GetCdmClientPropertySet')) { } else if (funcName.includes('GetCdmClientPropertySet')) {
GetCdmClientPropertySet(funcAddr); GetCdmClientPropertySet(funcAddr);
required = true;
} else if (funcName.includes('PrepareKeyRequest')) { } else if (funcName.includes('PrepareKeyRequest')) {
PrepareKeyRequest(funcAddr); PrepareKeyRequest(funcAddr);
} else if (funcName.includes('lcc07') || funcName.includes('oecc07') || funcName.includes('getOemcryptoDeviceId')) { required = true;
GetDeviceId(funcAddr, funcName);
} else if (targets.includes(funcName) || (!targets.length && funcName.match(/^[a-z]+$/))) { } else if (targets.includes(funcName) || (!targets.length && funcName.match(/^[a-z]+$/))) {
LoadDeviceRSAKey(funcAddr, funcName); LoadDeviceRSAKey(funcAddr, funcName);
} else if (funcName.includes('FileSystem') && funcName.includes('Read')) { required = true;
} else if (['lcc07', 'oecc07', 'getOemcryptoDeviceId'].some(n => funcName.includes(n))) {
GetDeviceId(funcAddr, funcName);
} else if (['FileSystem', 'Read'].every(n => funcName.includes(n))) {
FileSystemRead(funcAddr); FileSystemRead(funcAddr);
} else if (funcName.includes('File') && funcName.includes('Read')) { } else if (['File', 'Read'].every(n => funcName.includes(n))) {
FileRead(funcAddr); FileRead(funcAddr);
} else if (funcName.includes('runningcrc')) { } else if (funcName.includes('runningcrc')) {
// https://github.com/Avalonswanderer/widevinel3_Android_PoC/blob/main/PoCs/recover_l3keybox.py#L50 // https://github.com/Avalonswanderer/widevinel3_Android_PoC/blob/main/PoCs/recover_l3keybox.py#L50
RunningCRC(funcAddr); RunningCRC(funcAddr);
} else if (['CryptoSession', 'GetSystemId'].every(n => funcName.includes(n))) {
GetSystemId(funcAddr); // Deprecated
} else { } else {
return; return;
} }
hooked.push(funcAddr); required && hooked.push(funcAddr);
print(Level.DEBUG, `Hooked (${funcAddr}): ${funcName}`); print(Level.DEBUG, `Hooked (${funcAddr}): ${funcName}`);
} catch (e) { } catch (e) {
print(Level.ERROR, `${e.message} for ${funcName}`); print(Level.ERROR, `${e.message} for ${funcName}`);