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https://github.com/AFLplusplus/AFLplusplus.git
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54 lines
2.0 KiB
Bash
Executable File
54 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2024 AFLplusplus
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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target="$1"
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symbol="$2"
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base="$3"
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test -z "$target" -o -z "$symbol" -o '!' -x "$target" && {
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echo "Syntax: $0 executable function [baseaddress]"
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echo
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echo Help script to calculate the function address of a binary QEMU will load it to.
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echo function is e.g. LLVMFuzzerTestOneInput, afl_qemu_driver_stdin, etc.
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echo "baseaddress is tried to be auto-detected, you can use 'AFL_QEMU_DEBUG_MAPS=1 afl-qemu-trace ./executable' to see the maps."
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exit 1
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}
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file=$(file $target|sed 's/.*: //')
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arch=$(echo $file|awk -F, '{print$2}'|tr -d ' ')
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bits=$(echo $file|sed 's/-bit .*//'|sed 's/.* //')
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pie=$(echo $file|grep -wqi pie && echo pie)
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test $(uname -s) = "Darwin" && symbol=_"$symbol"
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tmp_addr=$(nm "$target" | grep -i "T $symbol" | awk '{print$1}' | tr a-f A-F)
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test -z "$tmp_addr" && { echo Error: function $symbol not found 1>&2; exit 1; }
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test -z "$pie" && { echo 0x$tmp_addr; exit 0; }
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test -z "$base" && {
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test "$bits" = 32 -o "$bits" = 64 || { echo "Error: could not identify arch (bits=$bits)" 1>&2 ; exit 1; }
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test "$arch" = Intel80386 && base=0x40000000
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test "$arch" = x86-64 && base=0x4000000000
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test "$arch" = ARMaarch64 && base=0x5500000000
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# add more here, e.g. "$arch" = ARM
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}
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test -z "$base" && { echo "Error: could not identify base address! bits=$bits arch=$arch" 1>&2 ; exit 1; }
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hex_base=$(echo "$base" | awk '{sub("^0x","");print $0}' | tr a-f A-F )
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echo $tmp_addr | echo "ibase=16;obase=10;$hex_base + $tmp_addr" | bc | tr A-F a-f | awk '{print "0x"$0}'
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exit 0
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