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我有一块混淆的代码,我想恢复正常。如何正则表达式匹配和正则表达式替换字符串在php
我想出了一个简单的preg_replace_callback()
和preg_match()
巢的想法替代。
出于某种原因,虽然我的代码并不想在回调
这里匹配,特别是的preg_match是我的代码片段。
在我debbuging的阵列preg_match_all()
(我也试过普通preg_match()
以及)返回空,虽然它在回调之外的作品。
<?php
$code = '
public function encrypt($UDw2y33pQ_22) {
goto eKGyEfM327pq;
YlzBCxTNCJzo:
$p7nCDJiybOtp = mcrypt_create_iv($I9ryzFUJtil4,
MCRYPT_RAND);
goto zqGNmmifhK7G;
eKGyEfM327pq:
$IE19PrOpdkbJ = "*[email protected]$S8&8&*as&*SA7sa*SA7alnIU&7#$%gf^IsPj8";
goto uR63Cxb5ZtRs;
uR63Cxb5ZtRs:
$I9ryzFUJtil4 = mcrypt_get_iv_size(MCRYPT_BLOWFISH,
MCRYPT_MODE_ECB);
goto YlzBCxTNCJzo;
TdHsUlVktK5b:
return base64_encode($pcLABic8Iiv1);
goto XJlxnac4pgAr;
zqGNmmifhK7G:
$pcLABic8Iiv1 = mcrypt_encrypt(MCRYPT_BLOWFISH, $IE19PrOpdkbJ, utf8_encode($UDw2y33pQ_22), MCRYPT_MODE_ECB, $p7nCDJiybOtp);
goto TdHsUlVktK5b;
XJlxnac4pgAr:
}';
$deobfuscated = preg_replace_callback("/goto ([a-zA-Z0-9_]+);/", function($match){
preg_match_all("/({$match[1]}:)((\s|\S)*?)([a-zA-Z0-9]{12}:)/ms", $code, $a);
return $a[0][2];
},$code);
echo $deobfuscated;
实际结果:
public function encrypt($UDw2y33pQ_22) {
YlzBCxTNCJzo:
$p7nCDJiybOtp = mcrypt_create_iv($I9ryzFUJtil4, MCRYPT_RAND);
eKGyEfM327pq:
$IE19PrOpdkbJ = "*[email protected]$S8&8&*as&*SA7sa*SA7alnIU&7#$%gf^IsPj8";
uR63Cxb5ZtRs:
$I9ryzFUJtil4 = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
TdHsUlVktK5b:
return base64_encode($pcLABic8Iiv1);
zqGNmmifhK7G:
$pcLABic8Iiv1 = mcrypt_encrypt(MCRYPT_BLOWFISH, $IE19PrOpdkbJ, utf8_encode($UDw2y33pQ_22), MCRYPT_MODE_ECB, $p7nCDJiybOtp);
XJlxnac4pgAr:
}
预期结果:
public function encrypt($UDw2y33pQ_22) {
$IE19PrOpdkbJ = "*[email protected]$S8&8&*as&*SA7sa*SA7alnIU&7#$%gf^IsPj8";
$I9ryzFUJtil4 = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT_MODE_ECB);
$p7nCDJiybOtp = mcrypt_create_iv($I9ryzFUJtil4, MCRYPT_RAND);
$pcLABic8Iiv1 = mcrypt_encrypt(MCRYPT_BLOWFISH, $IE19PrOpdkbJ, utf8_encode($UDw2y33pQ_22), MCRYPT_MODE_ECB, $p7nCDJiybOtp);
return base64_encode($pcLABic8Iiv1);
}
实际和预期响应是什么? – ggdx
不好意思,谢谢你的提问。我编辑帖子以反映这些文章 – Repastificationer
您试图去混淆代码?这是你的代码吗?看起来很奇怪你试图去加密一个加密函数。 – GrumpyCrouton