文章目录
- 一、3-11
- 二、答题步骤
- 1.base64
- 总结
一、3-11
文件：攻防世界下载对应文件
二、答题步骤
1.base64
下载题目得到一张图片，进行lsb隐写查看
发现txt文件，保存二进制得到
发现是=结尾的进行base64转图片
代码语言：javascript复制iVBORw0KGgoAAAANSUhEUgAAAPoAAAD6CAYAAACI7Fo9AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAAEnQAABJ0Ad5mH3gAAAVqSURBVHhe7d1bTuRGAEDRIftfK1tIxgNRJNINbpff9xzJmvlpP6q5KpeB5u3v334Bt/bX57/AjQkdAoQOAUKHAKFDgNAhQOgQIHQIEDoECB0ChA4BQocLe39///zf9/xSCwSY0SFA6BAgdAgQOgQIHQKEDgGLv7329vb2 b/1PDqVZ8dZ67uCe13HV1sc95GRcRo9x7XeI8aZ0SFA6BAgdAgQOgR4GLdw/99d/5xz2/q61jD6Hp/pWuo2CX3NN3jrIJbuf/T6t76uNVzhHJnHrTsECB0ChM6fW/RHG/chdAgQOgQIHQJO8330Z6fx7DhrfYtni7XonHPb rpe8eoYHHGOjDGjX9AU5twNJkLnzwz9aOM hA4BQocAoUOA0CHAb68N7P o1z7zaJ9r72 y1tizHzM6BAgdAoQOAZddo8/107mMrEO3eO3aRt6Lrcee/ZjRIUDoECB0CBA6BAgdAhY/dQeuw4wOAUKHAKFDgNAhQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgQIHQKEDgFChwAfJcVDI3 cgvMZCv3RF8PaXwhb/7WQO/81kpFY5772u/E789jUuHWHAKFDgNAhQOgQcMmHcWseY/Sh09rXexaj4zK569hckRmdIVPMzzbOQ gQIHQIEPqNTevnRxs9t/7JuDnnssUX/lnWp8 ubY9xOcsY8MGMDgFChwChQ4DQIeD0D PmWnouIw sJmcag69Gr22uM48BH8zoECB0CBA6BKy Rp/rLOvEkWt45izr09E1 lbv75L9nmVMr rUoY9GuMcxHnllSJcef Ta5p7fVu/vkv2 Mqb8n1t3CBA6BAgdAoTO7qb19qsbY4YexgHXYEaHAKFDgNAhQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgT4NdWTOeoz7I46Lvswo0OA0CFA6BBw6jX62uvGK6wZrdHZwmF/wGHy06GFvo451/3suCPv0RXGu0LoJ3NUOEK/N2t0CBA6BAgdAlZfo6 5LhvZ/9bntpWj1rzPjvvTMY86X15jRocAoUOAW/eT e5WeImR8Rp1hfGuMKNDwOqhTzPDnA3YjxkdAoQOAUKHAKFDwC6/j/7o4ducwy593WTktUf67kHlluf/7LhL36fJFca7wowOAUKHAKFDwOVCn9aDczbgP4sfxo3GNPKQZ6mfjrnW8UYeQu19zf96dtyR92lkHFiXW3cIEDoECB0ChA4Bu/xk3FJHPZiCuzl16MA63LpDgNAhQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgQIHQKEDgFChwChQ8DQJ8yMftTTWT7c5tF1rH1uI2PlQ4AYdckZfYrm6wY859YdAoQOAUKHgNUfxu3x4Gjt4 5xHSPPEfYYU 5N6L8ddR2PnOlcuA 37hcwxf91g1cIHQKEDgGH/WTcmdbUa 9vxNwxPer8uKbbhL42oXMnbt0hQOgXMM3eXzd4hdAhYGiNPtfaD7tqa3QzOKMuGfpcV4xG6GzBrTsECB0ChA4Bi9foow/ESmv0K4wV92ZGhwChQ4DQIUDoELDLD8wcxcM4 HDr0IEPbt0hQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgQIHQKEDgFChwChQ4DQIUDoECB0CBA6BAgdAoQOAUKHAKFDgNAhQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgQIHQKEDgFChwChQ4DQIUDoECB0CBA6BAgdAoQOAUKHAKFDgNAhQOgQIHQIEDoECB0ChA4BQocAoUOA0CFA6BAgdAgQOgQIHQKEDgFChwChw 39 vUPmuaZZgm XxcAAAAASUVORK5CYII=在线转换网址：https://tool.jisuapi.com/base642pic.html
得到flag：FLAG{LSB_i5_SO_EASY}
总结
- base64
