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LJP Reverse1 main1 Writeup - kazma's blog

https://kazma.tw/2023/12/10/LJP-Reverse1-main1-Writeup/

main1一樣先丟 IDA,由於這題 LJP 有提示可疑的位置我們就不拐彎了,首先看 start: 這個系列的題目是希望大家了解到除了 main 還有其他位置值得留意,例如 init,進去之後會發現他一直 call r15+rbx*8 的位置: 來看看 r15 是什麼鬼東西: 看到 funcs_1399,追過去會看到: 這邊就看到關鍵了,正常來說 init 跟 fini 應該都只有一個 f

Yuawn Pwn2 rop Writeup - kazma's blog

https://kazma.tw/

rop雖然有附 source,但我們假裝沒有 XD。來用 r2 看一下 main: 看到一個 0x30 的 buffer,用 gets 去讀,那我們就 rop 開一個 shell。用以下的指令來搜集需要的 gadget: 12ROPgadget --binary ./rop --only "pop|ret" | lessROPgadget --binary ./rop --o

Yuawn Pwn1 orw Writeup - kazma's blog

https://kazma.tw/2023/12/10/Yuawn-Pwn1-orw-Writeup/

lab_rop1執行看一下: file 看一下: r2 看一下 main: OK,首先他把第一個輸入讀到全域變數 obj.name,然後開了一個 0x10 的 buffer 但是讀了 0x100 個 bytes。那我們的計畫就是把 “/bin/sh\0” 先放到 obj.name,然後正常 rop 就行,值得注意的是因為是 statically linked,所以基本上

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