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Jean-Baptiste Terrazzoni
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Feb 24, 2020
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,20 1,36 @@ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <sys/ptrace.h> | ||
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| int auth(login_str ebp 0x8, Serial ebp 0xc) | ||
| { | ||
| int login_len; // EBP - 0xc | ||
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| login_str[strcspn('\n', login_str)] = 0; | ||
| login_len = strnlen(login_str, 32); | ||
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| if (login_len != 5) { | ||
| return 1; | ||
| } | ||
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| if (ptrace(0, 0, 1, 0) == 0xffffffff) { // ??? | ||
| puts("\e[32m.---------------------------."); | ||
| puts("\e[31m| !! TAMPERING DETECTED !! |"); | ||
| puts("\e[32m.---------------------------."); | ||
| return 1; | ||
| } | ||
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| int value; // EBP - 0x10 | ||
| value = (int) (login_str[3]) ^ 0x1337 0x5eeded; | ||
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| } | ||
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| int main() | ||
| { | ||
| fgets(esp 0x2c, 32, stdin); Login | ||
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| scanf(%u, esp 0x28); Serial | ||
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| if (auth(Login, Serial)) | ||
| if (!auth(Login, Serial)) | ||
| system("/bin/sh"); | ||
| } | ||
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| auth(Login ebp 0x8, Serial ebp 0xc) | ||
| { | ||
| int temp; | ||
| Login[strcspn('\n', Login)] = '\0'; Replaces '\n' with '\0' | ||
| temp = strnlen(Login, 32); | ||
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| } |