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https://github.com/entropykit/entropia
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23 lines
644 B
Plaintext
23 lines
644 B
Plaintext
// SPDX-License-Identifier: Apache-2.0
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// bof_manual_mem.etpy - verify mem.alloc / mem.free pair.
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//
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// In BOF mode this works regardless of --gc. In standard mode it requires --gc=manual.
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use bof;
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fn go(args: char*, len: int) -> void {
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var buf: u64 = mem.alloc(64);
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if buf == 0 {
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BeaconPrintf(0, "[!] HeapAlloc failed\n");
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ret;
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}
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var b: u8* = (u8*)buf;
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b[0] = (u8)0x41;
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b[63] = (u8)0x42;
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BeaconPrintf(0, str.format("[+] alloc 64 bytes at {p}, first=0x{x} last=0x{x}\n",
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buf, (int)b[0], (int)b[63]));
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mem.free(buf);
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BeaconPrintf(0, "[+] freed\n");
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ret;
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}
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