FireShell CTF 2020 Re Simple Encryption 1.代码分析 __int64 __fastcall sub_401CA0(signed int a1, __int64 *a2) { __int64 v2; // rsi __int64 v3; // rcx __int64 v4; // rdi __int64 v5; // rdx __int64 result; // rax __int64 v7; // rcx unsigned __int64 v8; // rt1 _...
这里简单提一下php的代码加密,可以观摩小鹿师傅的一篇博文Decrypt php VoiceStar encryption extension php代码加密大致分为几种类型: 1、代码混淆,比如phpjiami,这种解密在底层hook住zend_compile_string函数即可解密。 2、扩展加密,这种加密可以使用各种自己写的算法把数据加密,然后通过hook住zend_compile_*类的函数来完...
cryptomator/cryptomator: Multi-platform transparent client-side encryption of your files in the cloud dotnet/csharplang: The official repo for the design of the C# programming language diseq/csi-rclone: CSI driver for rclone wunderio/csi-rclone: CSI driver for rclone MicheleBertoli/css-in-js: ...
The service encrypted plain text by multiple rounds, which is determined by length of plain text, if length of plain text was odd, it appended a '_' to the end, then go for int(2 * ceil(log(len(message), 2))) rounds of encryption. For each round, it substituted message according ...