攻防世界MISC_hit-the-core

环境

题目下载，linux的core文件

ALEXCTF{K33P_7H3_g00D_w0rk_up}

wp

查找字符串，或者拖到IDA里面的字符串查找即可

strings 8deb5f0c2cd84143807b6175f58d6f3f -n 6 #查看至少6位以上的字符串

cvqAeqacLtqazEigwiXobxrCrtuiTzahfFreqc{bnjrKwgk83kgd43j85ePgb_e_rwqr7fvbmHjklo3tews_hmkogooyf0vbnk0ii87Drfgh_n kiwutfb0ghk9ro987k5tfb_hjiouo087ptfcv}

发现每隔着四个字符，是大写

python

s = "cvqAeqacLtqazEigwiXobxrCrtuiTzahfFreqc{bnjrKwgk83kgd43j85ePgb_e_rwqr7fvbmHjklo3tews_hmkogooyf0vbnk0ii87Drfgh_n kiwutfb0ghk9ro987k5tfb_hjiouo087ptfcv}"
print(s[3::5]) # ALEXCTF{K33P_7H3_g00D_w0rk_up}