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pwnable.kr unlink 1

Pwnable.kr WriteUp - unlink

# source code // unlink@pwnable:~$ cat unlink.c #include #include #include typedef struct tagOBJ{ struct tagOBJ* fd; struct tagOBJ* bk; char buf[8]; }OBJ; void shell(){ system("/bin/sh"); } void unlink(OBJ* P){ OBJ* BK; OBJ* FD; BK=P->bk; FD=P->fd; FD->bk=BK; BK->fd=FD; } int main(int argc, char* argv[]){ malloc(1024); OBJ* A = (OBJ*)malloc(sizeof(OBJ)); OBJ* B = (OBJ*)malloc(sizeof(OBJ)); OBJ* ..

Wargame/pwnable.kr 2020.03.19
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I am/was

- Graduate student at Korea Univ.

- Assistant researcher at DFRC

- Developer at WINS Co., Ltd.

- Student at BoB 9th Digit. Forensics

- Undergraduate at Univ. of Suwon

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