re学习（19）[ACTF新生赛2020]easyre1（UPX脱壳）

文章链接：
BUUCTF在线评测

参考视频：B站

【新手教程三】小Z带你学习什么是ESP定律和什么是堆栈平衡 ？ - 『脱壳破解区』 - 吾爱破解 - LCG - LSG |安卓破解|病毒分析|www.52pojie.cn

 

题解：

工具脱壳

key="*F'\"N,\"(I?+@"
data=[0x7E, 0x7D, 0x7C, 0x7B, 0x7A, 0x79, 0x78, 0x77, 0x76, 0x75,
  0x74, 0x73, 0x72, 0x71, 0x70, 0x6F, 0x6E, 0x6D, 0x6C, 0x6B,
  0x6A, 0x69, 0x68, 0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61,
  0x60, 0x5F, 0x5E, 0x5D, 0x5C, 0x5B, 0x5A, 0x59, 0x58, 0x57,
  0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50, 0x4F, 0x4E, 0x4D,
  0x4C, 0x4B, 0x4A, 0x49, 0x48, 0x47, 0x46, 0x45, 0x44, 0x43,
  0x42, 0x41, 0x40, 0x3F, 0x3E, 0x3D, 0x3C, 0x3B, 0x3A, 0x39,
  0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2F,
  0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 0x28, 0x27, 0x26, 0x25,
  0x24, 0x23, 0x20, 0x21, 0x22, 0x00]
flag='flag{'
for i in key:
    pos=data.index(ord(i))+1
    flag+=chr(pos)

flag+='}'
print(flag)
#flag{U9X_1S_W6@T?}