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Updated agentupdate on windows, to workaround older agents that did not format process.cwd() correctly

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This commit is contained in:
Bryan Roe 2021-03-05 17:30:39 -08:00
parent 9a240577fa
commit 0456060304
1 changed files with 7 additions and 2 deletions
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9
agents/recoverycore.js
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@ -335,11 +335,16 @@ function windows_execve(name, agentfilename, sessionid) {
return;
}
var cwd = process.cwd();
if (!cwd.endsWith('\\'))
{
cwd += '\\';
}
var cmd = require('_GenericMarshal').CreateVariable(process.env['windir'] + '\\system32\\cmd.exe', { wide: true });
var args = require('_GenericMarshal').CreateVariable(3 * require('_GenericMarshal').PointerSize);
var arg1 = require('_GenericMarshal').CreateVariable('cmd.exe', { wide: true });
var arg2 = require('_GenericMarshal').CreateVariable('/C wmic service "' + name + '" call stopservice & "' + process.cwd() + agentfilename + '.update.exe" -b64exec ' + 'dHJ5CnsKICAgIHZhciBzZXJ2aWNlTG9jYXRpb24gPSBwcm9jZXNzLmFyZ3YucG9wKCk7CiAgICByZXF1aXJlKCdwcm9jZXNzLW1hbmFnZXInKS5lbnVtZXJhdGVQcm9jZXNzZXMoKS50aGVuKGZ1bmN0aW9uIChwcm9jKQogICAgewogICAgICAgIGZvciAodmFyIHAgaW4gcHJvYykKICAgICAgICB7CiAgICAgICAgICAgIGlmIChwcm9jW3BdLnBhdGggPT0gc2VydmljZUxvY2F0aW9uKQogICAgICAgICAgICB7CiAgICAgICAgICAgICAgICBwcm9jZXNzLmtpbGwocHJvY1twXS5waWQpOwogICAgICAgICAgICB9CiAgICAgICAgfQogICAgICAgIHByb2Nlc3MuZXhpdCgpOwogICAgfSk7Cn0KY2F0Y2goZSkKewogICAgcHJvY2Vzcy5leGl0KCk7Cn0=' +
' "' + process.execPath + '" & copy "' + process.cwd() + agentfilename + '.update.exe" "' + process.execPath + '" & wmic service "' + name + '" call startservice & erase "' + process.cwd() + agentfilename + '.update.exe"', { wide: true });
var arg2 = require('_GenericMarshal').CreateVariable('/C wmic service "' + name + '" call stopservice & "' + cwd + agentfilename + '.update.exe" -b64exec ' + 'dHJ5CnsKICAgIHZhciBzZXJ2aWNlTG9jYXRpb24gPSBwcm9jZXNzLmFyZ3YucG9wKCk7CiAgICByZXF1aXJlKCdwcm9jZXNzLW1hbmFnZXInKS5lbnVtZXJhdGVQcm9jZXNzZXMoKS50aGVuKGZ1bmN0aW9uIChwcm9jKQogICAgewogICAgICAgIGZvciAodmFyIHAgaW4gcHJvYykKICAgICAgICB7CiAgICAgICAgICAgIGlmIChwcm9jW3BdLnBhdGggPT0gc2VydmljZUxvY2F0aW9uKQogICAgICAgICAgICB7CiAgICAgICAgICAgICAgICBwcm9jZXNzLmtpbGwocHJvY1twXS5waWQpOwogICAgICAgICAgICB9CiAgICAgICAgfQogICAgICAgIHByb2Nlc3MuZXhpdCgpOwogICAgfSk7Cn0KY2F0Y2goZSkKewogICAgcHJvY2Vzcy5leGl0KCk7Cn0=' +
' "' + process.execPath + '" & copy "' + cwd + agentfilename + '.update.exe" "' + process.execPath + '" & wmic service "' + name + '" call startservice & erase "' + cwd + agentfilename + '.update.exe"', { wide: true });
arg1.pointerBuffer().copy(args.toBuffer());
arg2.pointerBuffer().copy(args.toBuffer(), require('_GenericMarshal').PointerSize);