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[backend] send encoded command into implant (#1831)
Signed-off-by: Marine LM <[email protected]>
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19 changes: 19 additions & 0 deletions
19
openbas-api/src/main/java/io/openbas/migration/V3_49__Drop_injects_payloads_table.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package io.openbas.migration; | ||
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| import java.sql.Connection; | ||
| import java.sql.Statement; | ||
| import org.flywaydb.core.api.migration.BaseJavaMigration; | ||
| import org.flywaydb.core.api.migration.Context; | ||
| import org.springframework.stereotype.Component; | ||
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| @Component | ||
| public class V3_49__Drop_injects_payloads_table extends BaseJavaMigration { | ||
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| @Override | ||
| public void migrate(Context context) throws Exception { | ||
| Connection connection = context.getConnection(); | ||
| Statement statement = connection.createStatement(); | ||
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| statement.executeUpdate("DROP TABLE IF EXISTS injects_payloads"); | ||
| } | ||
| } |
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139 changes: 139 additions & 0 deletions
139
openbas-api/src/main/java/io/openbas/rest/inject/service/ExecutableInjectService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| package io.openbas.rest.inject.service; | ||
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| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
| import io.openbas.database.model.*; | ||
| import io.openbas.database.repository.InjectRepository; | ||
| import io.openbas.rest.exception.ElementNotFoundException; | ||
| import java.util.ArrayList; | ||
| import java.util.Base64; | ||
| import java.util.List; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
| import lombok.RequiredArgsConstructor; | ||
| import org.springframework.stereotype.Service; | ||
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| @RequiredArgsConstructor | ||
| @Service | ||
| public class ExecutableInjectService { | ||
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| private final InjectRepository injectRepository; | ||
| private static final Pattern argumentsRegex = Pattern.compile("#\\{([^#{}]+)}"); | ||
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| private List<String> getArgumentsFromCommandLines(String command) { | ||
| Matcher matcher = argumentsRegex.matcher(command); | ||
| List<String> commandParameters = new ArrayList<>(); | ||
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| while (matcher.find()) { | ||
| commandParameters.add(matcher.group(1)); | ||
| } | ||
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| return commandParameters; | ||
| } | ||
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| private String replaceArgumentsByValue( | ||
| String command, List<PayloadArgument> defaultArguments, ObjectNode injectContent) { | ||
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| List<String> arguments = getArgumentsFromCommandLines(command); | ||
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| for (String argument : arguments) { | ||
| String value = ""; | ||
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| // Try to get the value from injectContent | ||
| if (injectContent.has(argument) && !injectContent.get(argument).asText().isEmpty()) { | ||
| value = injectContent.get(argument).asText(); | ||
| } else { | ||
| // Fallback to defaultContent | ||
| value = | ||
| defaultArguments.stream() | ||
| .filter(a -> a.getKey().equals(argument)) | ||
| .map(PayloadArgument::getDefaultValue) | ||
| .findFirst() | ||
| .orElse(""); | ||
| } | ||
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| command = command.replace("#{" + argument + "}", value); | ||
| } | ||
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| return command; | ||
| } | ||
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| private String processAndEncodeCommand( | ||
| String command, | ||
| String executor, | ||
| List<PayloadArgument> defaultArguments, | ||
| ObjectNode injectContent, | ||
| String obfuscator) { | ||
| String computedCommand = replaceArgumentsByValue(command, defaultArguments, injectContent); | ||
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| if (executor.equals("cmd")) { | ||
| computedCommand = computedCommand.trim().replace("\n", " & "); | ||
| } | ||
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| if (obfuscator.equals("base64")) { | ||
| return Base64.getEncoder().encodeToString(computedCommand.getBytes()); | ||
| } | ||
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| return computedCommand; | ||
| } | ||
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| public Payload getExecutablePayloadInject(String injectId) { | ||
| Inject inject = | ||
| this.injectRepository.findById(injectId).orElseThrow(ElementNotFoundException::new); | ||
| InjectorContract contract = | ||
| inject.getInjectorContract().orElseThrow(ElementNotFoundException::new); | ||
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| // prerequisite | ||
| contract | ||
| .getPayload() | ||
| .getPrerequisites() | ||
| .forEach( | ||
| prerequisite -> { | ||
| if (prerequisite.getCheckCommand() != null) { | ||
| prerequisite.setCheckCommand( | ||
| processAndEncodeCommand( | ||
| prerequisite.getCheckCommand(), | ||
| prerequisite.getExecutor(), | ||
| contract.getPayload().getArguments(), | ||
| inject.getContent(), | ||
| "base64")); | ||
| } | ||
| if (prerequisite.getGetCommand() != null) { | ||
| prerequisite.setGetCommand( | ||
| processAndEncodeCommand( | ||
| prerequisite.getGetCommand(), | ||
| prerequisite.getExecutor(), | ||
| contract.getPayload().getArguments(), | ||
| inject.getContent(), | ||
| "base64")); | ||
| } | ||
| }); | ||
|
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| // cleanup | ||
| if (contract.getPayload().getCleanupCommand() != null) { | ||
| contract | ||
| .getPayload() | ||
| .setCleanupCommand( | ||
| processAndEncodeCommand( | ||
| contract.getPayload().getCleanupCommand(), | ||
| contract.getPayload().getCleanupExecutor(), | ||
| contract.getPayload().getArguments(), | ||
| inject.getContent(), | ||
| "base64")); | ||
| } | ||
|
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| // Command | ||
| if (contract.getPayload().getTypeEnum().equals(PayloadType.COMMAND)) { | ||
| Command payloadCommand = (Command) contract.getPayload(); | ||
| payloadCommand.setContent( | ||
| processAndEncodeCommand( | ||
| payloadCommand.getContent(), | ||
| payloadCommand.getExecutor(), | ||
| contract.getPayload().getArguments(), | ||
| inject.getContent(), | ||
| "base64")); | ||
| return payloadCommand; | ||
| } | ||
|
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| return contract.getPayload(); | ||
| } | ||
| } |
2 changes: 1 addition & 1 deletion
2
...ava/io/openbas/service/InjectService.java → ...as/rest/inject/service/InjectService.java
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