分析文件file和checksec命令 使用ida64位打开,F5,这是基本流程了 main方法 // local variable allocation has failed, the output may be wrong! int __cdecl main(int argc, const char **argv, const char **envp) { unsigned int v4; // [rsp+14h] [rbp-Ch] unsigned __int64 v5; // [rsp+18h...
第一道题,题目提示非常简单的逆向并提供一个 zip 压缩包,下载本地解压后是一个 exe 可执行文件。尝试用 IDA 反编译,发现 flag 出来了。 感谢善待新人 reverse1 依然给了一个压缩文件,解压后依然是一个 exe 可执行文件,再次尝试用 IDA 反编译,这次没有一眼看到 flag 了,甚至连主函数都没有。于是 Shift + ...
v5 =len(key)foriinrange(len(key)):forjinrange(65,91):#注:这里不可以是90,否则不对iford(text[i]) == (j -39-ord(key[i % v5]) +97) %26+97:print(chr(j),end='')break#flag{KLDQCUDFZO} Java逆向解密 这个是class文件,不是apk文件,当时我还在想,使用apk逆向软件能不能逆向成功,成功...
l = len(input1) for i in range(l): num = ((input1[i] + i) % 128 + 128) % 128 code += num for i in range(l - 1): code[i] = code[i] ^ code[i + 1] print code code = [ '\x1f', '\x12', '\x1d', '(', '0', '4', '\x01', '\x06', '\x1...
//Java program to Reverse a Number.importjava.util.*;publicclassReverseNumber{//Function to find Reverse NumberpublicstaticintRevNumber(intnum){intsum=0;while(num>0){sum=(sum*10)+num%10;num/=10;}returnsum;}publicstaticvoidmain(String[]args){intnumber;Scanner sc=newScanner(System.in);//...
(text, -i) if check(t) print(i) print(t) break text="If not to the sun for smilling , warm is...) if num %i==0: return False else: return True print(list(filter(isPrime,range(2,101))) li.sort()和 python中sort与sorted的使用 ;Here is the original list again:”) print(ca...
Example constfruits = ["Banana","Orange","Apple","Mango"]; fruits.reverse(); Try it Yourself » Description Thereverse()method reverses the order of the elements in an array. Thereverse()method overwrites the original array. See Also: ...
Learn how to reverse a range in Python easily with this step-by-step guide. Discover efficient techniques and examples to master this task.
for i in range(len(text)): res.append(ord(text[i]) ^ KeyStream[i]) return res 可以发现这题实际上是在考察对加密算法的熟悉程度 这里是 RC4 使用解密算法即可求出flag android 出题人:djc 最简单的安卓 本身只是想考察环境 使用反编译 打开就能看见flag ...
AST has a wide range of uses. IDE syntax highlighting, code inspection, formatting, compression, translation, etc., all need to convert the code into AST and then perform subsequent operations. The syntax difference between ES5 and ES6, for backward compatibility, in practice Syntax conversion is...